RÉSUMÉ
Hydrogels based on natural polymers have aroused interest from the scientific community. The aim of this investigation was to obtain natural extracts from mango peels and to evaluate their addition (1, 3, and 5%) on the rheological behavior of mango starch hydrogels. The total phenolic content, antioxidant activities, and phenolic acid profile of the natural extracts were evaluated. The viscoelastic and thixotropic behavior of hydrogels with the addition of natural extracts was evaluated. The total phenol content and antioxidant activity of the extracts increased significantly (p<0.05) with the variation of the ethanol-water ratio; the phenolic acid profile showed the contain of p-coumaric, ellagic, ferulic, chlorogenic acids, epicatechein, catechin, querecetin, and mangiferin. The viscoelastic behavior of the hydrogels showed that the storage modulus G' is larger than the loss modulus G'' indicating a viscoelastic solid behavior. The addition of extract improved the thermal stability of the hydrogels. 1% of the extracts increase viscoelastic and thixotropic properties, while concentrations of 3 to 5% decreased. The recovery percentage (%Re) decreases at concentrations from 0% to 1% of natural extracts, however, at concentrations from 3% to 5% increased.
Sujet(s)
Antioxydants , Hydrogels , Mangifera , Extraits de plantes , Rhéologie , Amidon , Mangifera/composition chimique , Hydrogels/composition chimique , Extraits de plantes/composition chimique , Amidon/composition chimique , Antioxydants/composition chimique , Viscosité , Fruit/composition chimique , Phénols/composition chimiqueRÉSUMÉ
OBJECTIVE: Evaluate the 5-year changes in the consumers' food environment in the area of a health promotion service in Brazilian primary health care. Our hypothesis is that the consumers' food environment in the areas with primary healthcare services has changes that may favour healthy eating habits over time. DESIGN: Longitudinal study. SETTING: The territory around the primary healthcare services in Belo Horizonte, Minas Gerais, Brazil. PARTICIPANTS: All food stores and open-air food markets that sell fruits and vegetables around the primary healthcare services in 2013 (n 272) and in 2018 (n 265). RESULTS: Fruit diversity increased by 13·4 % (P < 0·001) and vegetables variety and quality by 16·1 % (P = 0·003) and 12·5 % (P < 0·001), respectively. Corn snacks showed an increase in availability (13·5 %; P = 0·002). The increase in advertising was observed for fruits and vegetables (34·6 %; P < 0·001) and ultra-processed foods (47·6 %; P < 0·001). Supermarkets showed an increase in the Healthy Food Store Index (three points; P < 0·001), while fruits and vegetables stores showed a decrease of one point in the index (P < 0·001). CONCLUSIONS: The unequal changes in the consumers' food environment according to the food stores types demonstrate the importance of food supply policies that promote a healthy environment and favour the maintenance of traditional healthy food retailers.
Sujet(s)
Régime alimentaire sain , Approvisionnement en nourriture , Fruit , Légumes , Humains , Brésil , Études longitudinales , Approvisionnement en nourriture/statistiques et données numériques , Régime alimentaire sain/statistiques et données numériques , Supermarchés , Comportement du consommateur/statistiques et données numériques , Promotion de la santé/méthodes , Soins de santé primaires/statistiques et données numériques , Casse-croute , 332/statistiques et données numériques , Comportement alimentaire , Aliments de restauration rapide/statistiques et données numériquesRÉSUMÉ
Magnet-mediated gene therapy has gained considerable interest from researchers as a novel alternative for treating genetic disorders, particularly through the use of superparamagnetic iron oxide nanoparticles (NPs)-such as magnetite NPs (Fe3O4NPs)-as non-viral genetic vectors. Despite their commercial availability for specific genetic transfection, such as in microglia cell lines, many potential uses remain unexplored. Still, ethical concerns surrounding the use of human DNA often impede genetic research. Hence, this study examined DNA-coated Fe3O4NPs (DNA-Fe3O4NPs) as potential transfection vectors for human foreskin fibroblasts (HFFs) and A549 (lung cancer) cell lines, using banana (Musa sp.) as a low-cost, and bioethically unproblematic DNA source. Following coprecipitation synthesis, DNA-Fe3O4NP characterization revealed a ζ-potential of 40.65 ± 4.10 mV, indicating good colloidal stability in aqueous media, as well as a superparamagnetic regime, evidenced by the absence of hysteresis in their magnetization curves. Successful DNA coating on the NPs was confirmed through infrared spectra and surface analysis results, while magnetite content was verified via characteristic X-ray diffraction peaks. Transmission electron microscopy (TEM) determined the average size of the DNA-Fe3O4NPs to be 14.69 ± 5.22 nm. TEM micrographs also showed no morphological changes in the DNA-Fe3O4NPs over a 30-day period. Confocal microscopy of HFF and A549 lung cancer cell lines incubated with fluoresceinamine-labeled DNA-Fe3O4NPs demonstrated their internalization into both the cytoplasm and nucleus. Neither uncoated Fe3O4NPs nor DNA-Fe3O4NPs showed cytotoxicity to A549 lung cancer cells at 1-50 µg/mL and 25-100 µg/mL, respectively, after 24 h. HFFs also maintained viability at 1-10 µg/mL for both NP types. In conclusion, DNA-Fe3O4NPs were successfully internalized into cells and exhibited no cytotoxicity in both healthy and cancerous cells across a range of concentrations. These NPs, capable of binding to various types of DNA and RNA, hold promise for applications in gene therapy.
Sujet(s)
ADN , Nanoparticules de magnétite , Musa , Humains , Nanoparticules de magnétite/composition chimique , Musa/composition chimique , Cellules A549 , Fruit/composition chimique , Fibroblastes/métabolisme , Survie cellulaire/effets des médicaments et des substances chimiques , Transfection , Matériaux biocompatibles/composition chimique , Matériaux biocompatibles/pharmacologie , Lignée cellulaire tumoraleRÉSUMÉ
Anthocyanins are bioactive compounds responsible for various physiological processes in plants and provide characteristic colors to fruits and flowers. Their biosynthetic pathway is well understood; however, the enzymatic degradation mechanism is less explored. Anthocyanase (ß-glucosidase (BGL)), peroxidase (POD), and polyphenol oxidase (PPO) are enzymes involved in degrading anthocyanins in plants such as petunias, eggplants, and Sicilian oranges. The aim of this work was to investigate the physicochemical interactions between these enzymes and the identified anthocyanins (via UPLC-MS/MS) in cranberry (Vaccinium macrocarpon) through molecular docking to identify the residues likely involved in anthocyanin degradation. Three-dimensional models were constructed using the AlphaFold2 server based on consensus sequences specific to each enzyme. The models with the highest confidence scores (pLDDT) were selected, with BGL, POD, and PPO achieving scores of 87.6, 94.8, and 84.1, respectively. These models were then refined using molecular dynamics for 100 ns. Additionally, UPLC-MS/MS analysis identified various flavonoids in cranberries, including cyanidin, delphinidin, procyanidin B2 and B4, petunidin, pelargonidin, peonidin, and malvidin, providing important experimental data to support the study. Molecular docking simulations revealed the most stable interactions between anthocyanase and the anthocyanins cyanidin 3-arabinoside and cyanidin 3-glucoside, with a favorable ΔG of interaction between -9.3 and -9.2 kcal/mol. This study contributes to proposing a degradation mechanism and seeking inhibitors to prevent fruit discoloration.
Sujet(s)
Anthocyanes , Catechol oxidase , Simulation de docking moléculaire , Vaccinium macrocarpon , Anthocyanes/composition chimique , Anthocyanes/métabolisme , Catechol oxidase/métabolisme , Catechol oxidase/composition chimique , Vaccinium macrocarpon/composition chimique , Myeloperoxidase/métabolisme , Myeloperoxidase/composition chimique , Spectrométrie de masse en tandem , Protéines végétales/métabolisme , Protéines végétales/composition chimique , Simulation de dynamique moléculaire , Simulation numérique , Fruit/composition chimique , Fruit/métabolisme , Fruit/enzymologieRÉSUMÉ
BACKGROUND: Food waste is a global issue affecting society from environmental, nutritional, and social perspectives. In collaboration with the National Board of Preschools, fruit and vegetable waste generated during the preparation of lunch was quantified in four preschools in the Metropolitan area of Santiago in Chile. METHODS: This study was conducted in four preschools, two in the Western area of Santiago and two in the Eastern area, of which two hold environmental quality certifications. Over a five-day period, the weight of raw materials and waste from vegetables (peels) and fruit (pomace) were measured. Percentages of vegetable and fruit post-cleaning losses and waste were evaluated. RESULTS: Vegetable loss exceeded 20% in 31% of the preschools, primarily from carrots and potatoes. Fruit losses were higher, with pears accounting for the most significant waste, recorded in 75% of the study centers. No differences in vegetable loss was found between centers, while variations were observed for fruit. Preschools with environmental quality certifications wasted less onions (p = 0.016) but more pears (p = 0.036). CONCLUSIONS: There is higher fruit loss than vegetable loss, with onions and tomatoes being the least wasted. Possessing an environmental quality certification does not guarantee a significant reduction in overall losses. Handling and storage conditions may play a key role in minimizing losses. Further studies are needed to provide evidence that can guide improvements in Chile's National Board of Preschools services, aiming for a more sustainable lunch preparation processes.
Sujet(s)
Fruit , Légumes , Chili , Humains , Enfant d'âge préscolaire , Établissements scolairesRÉSUMÉ
Heilipus lauri is a specialist avocado seed feeding weevil native to parts of México and is an invasive pest in Colombia. This weevil is considered an incursion risk because possible unintended introductions into areas outside of its native range can result in establishment, which threatens avocado production in invaded regions. Despite being a well-recognized pest of avocados, relatively little is known about oviposition biology, behavior, and cultivar preferences of this weevil. Field studies in commercial Hass avocado orchards in México and laboratory studies in a quarantine facility in California (USA) indicated that H. lauri prefers to oviposit into middle and bottom thirds of fruit. In the laboratory, an average of 1.7 eggs (range 1-6 eggs) are laid over a 24-h period in oviposition chambers by individual females. Conspecifics add eggs to these clutches, with up to 17 eggs being recorded in 1 oviposition chamber. This finding suggests that H. lauri does not use an oviposition deterring pheromone. Female weevils readily oviposit in artificial holes representing mechanical wounds on fruit. In comparison to the commercially dominant Hass variety, fruit from Lamb Hass and G22, a native Guatemalan variety, and to a lesser extent Gem, may be less preferred for oviposition when females have a choice of fruit in which to oviposit. Videography studies indicated that H. lauri exhibits predominantly diurnal activity with respect to oviposition behaviors, feeding, and walking.
Sujet(s)
Oviposition , Persea , Charançons , Animaux , Femelle , Charançons/physiologie , Fruit , Mexique , CalifornieRÉSUMÉ
Fruit peels such as Banana, Orange, and Pineapple can be used to produce eco-enzymes producing diverse chemical compounds. Eco-enzymes are derived from the organic fermentation process of the specified ingredients. The objective of this study was to characterize the organic compounds present in Eco-enzymes derived from various raw materials. The research phase involved the extraction of eco-friendly Eco-enzymes from different raw materials and the identification of the chemical compounds in them. The results of this study are expected to contribute to organic waste management, highlighting the importance of utilizing waste as an economically and environmentally viable resource and strategic steps in a more sustainable waste management. Data analysis of the Eco-enzyme extraction results was carried out using high-liquid chromatography (HPLC) to ascertain the levels of organic chemical compounds produced. The findings revealed eight organic compounds categorized into organic acids (acetic acid, citric acid, lactic acid, oxalic acid) Acetic acid compound in pineapple fermentation 1.83 (g/L). Citric acid compound in banana peel fermentation 3.39 (g/L). Lactic acid compounds in orange fermentation 4.89 (g/L). The highest oxalic acid compound was identified in orange fermentation with a content of 0.1764 (g/L).
Sujet(s)
Ananas , Citrus sinensis , Musa , Ananas/composition chimique , Ananas/enzymologie , Musa/composition chimique , Citrus sinensis/composition chimique , Chromatographie en phase liquide à haute performance , Fermentation , Fruit/composition chimiqueRÉSUMÉ
The lulo (Solanum quitoense Lam.) is a fruit tree of great importance for southern Colombia, given its demand and its potential as an exotic fruit in the international market. However, there is no information on variation and heritability, fundamental aspects for evaluating selection. The objective of this research was to estimate the heritability of yield, fruit weight (FW), total soluble solids (TSS) and maturity index (MI) in half-sib families (HSF) of lulo from the first cycle of recurrent selection. Strict sense heritability ( h e 2 ) across four locations in the 50 HSF were low for yield, MI and for FW, while for TSS it was high. The 50 FMH showed a high h e 2 in yield in Arboleda, Cartago, Tangua and La Unión. TSS was high in all four locations. For FW it was moderate in Cartago, Tangua, La Unión and Arboleda. In MI it was high in Tangua and La Unión and low in Arboleda and Cartago. The h e 2 in 10 HSF selected across four locations presented values ââhigher than 50 HSF, with a high value for yield in Arboleda, moderate in Cartago and Tangua and low in La Unión; In FW it was high in Arboleda, Tangua and La Unión, and moderate in Cartago. The results indicate the existence of adequate genetic variance to be able to select and achieve high genetic gain in the traits evaluated in HSF of lulo.
Sujet(s)
Fruit , Solanum , Fruit/génétique , Solanum/génétique , Solanum/classification , Colombie , Phénotype , Caractère quantitatif héréditaireRÉSUMÉ
Chilean peach growers have achieved worldwide recognition for their high-quality fruit products. Among the main factors influencing peach fruit quality, sweetness is pivotal for maintaining the market's competitiveness. Numerous studies have been conducted in different peach-segregating populations to unravel SSC regulation. However, different cultivars may also have distinct genetic conformation, and other factors, such as environmental conditions, can significantly impact SSC. Using a transcriptomic approach with a gene co-expression network analysis, we aimed to identify the regulatory mechanism that controls the sugar accumulation process in an 'O × N' peach population. This population was previously studied through genomic analysis, associating LG5 with the genetic control of the SSC trait. The results obtained in this study allowed us to identify 91 differentially expressed genes located on chromosome 5 of the peach genome as putative new regulators of sugar accumulation in peach, together with a regulatory network that involves genes directly associated with sugar transport (PpSWEET15), cellulose biosynthesis (PpCSLG2), flavonoid biosynthesis (PpPAL1), pectin modifications (PpPG, PpPL and PpPMEi), expansins (PpEXPA1 and PpEXPA8) and several transcription factors (PpC3H67, PpHB7, PpRVE1 and PpCBF4) involved with the SSC phenotype. These results contribute to a better understanding of the genetic control of the SSC trait for future breeding programs in peaches.
Sujet(s)
Fruit , Réseaux de régulation génique , Prunus persica , Prunus persica/génétique , Prunus persica/métabolisme , Fruit/génétique , Fruit/métabolisme , Réseaux de régulation génique/génétique , Régulation de l'expression des gènes végétaux/génétique , Sucres/métabolisme , Analyse de profil d'expression de gènes , ChiliRÉSUMÉ
Pomegranate (Punica granatum L.) peel is a potential source of bioactive phenolic compounds such as ellagic acid and α- and ß-punicalagin. This work explores the efficiency of natural deep eutectic solvents combined with ultrasound-assisted extraction (UAE) and pressurized liquid extraction (PLE) for their extraction. Five NaDESs were evaluated by employing UAE (25 °C, for 50 min) to determine their total phenolic content (Folin-Ciocalteu assay) and ellagic acid and α- and ß-punicalagin contents (high-performance liquid chromatography (HPLC-DAD)). The NaDES composed of choline chloride (ChCl) and glycerol (Gly) (1:2, molar ratio) was the most efficient in the UAE when compared with the rest of the NaDESs and water extracts. Therefore, ChCl:Gly was further evaluated using PLE at different temperatures (40, 80, 120 and 160 °C). The PLE-NaDES extract obtained at 80 °C for 20 min at 1500 psi exhibited the highest contents of ellagic acid and α- and ß-punicalagin compared to the rest of the temperatures and PLE-water extracts obtained under the same extraction conditions. Combining UAE or PLE with a NaDES emerges as a sustainable alternative for extracting ellagic acid and α- and ß-punicalagin from pomegranate peel.
Sujet(s)
Acide ellagique , Phénols , Extraits de plantes , Grenadier commun , Grenadier commun/composition chimique , Phénols/composition chimique , Phénols/isolement et purification , Phénols/analyse , Extraits de plantes/composition chimique , Acide ellagique/composition chimique , Acide ellagique/isolement et purification , Solvants eutectiques profonds/composition chimique , Chromatographie en phase liquide à haute performance/méthodes , Tanins hydrolysables/composition chimique , Tanins hydrolysables/isolement et purification , Fruit/composition chimique , Solvants/composition chimiqueRÉSUMÉ
Despite the efforts made to promote consumption, some countries are not increasing their fruit and vegetable intake, while household structures are undergoing relevant changes. Fruit and vegetable consumption is necessary but not sufficient for a healthy diet. Previous research has linked adequate fruit and vegetable consumption to a lower risk of cardiovascular diseases, type 2 diabetes, and some mental health conditions. Furthermore, millions of deaths are reported annually worldwide due to diets low in fruit and vegetables, highlighting their critical public health importance. This study aims to separately analyze the purchases of fruit and vegetables in single-person households. We used three waves of the Family Budget Survey, Encuesta de Presupuestos Familiares, in Chile, which is nationally representative of urban areas and includes over 10,000 households in each wave. We employed descriptive statistics to examine the characteristics of the head of household and the food shopper as well as the structure, composition, and overall characteristics of households. Additionally, we performed separate analyses for fruit and vegetable purchases, using these variables to determine the marginal effect on the probability of purchasing fruit or vegetables through probit models. Results show that, from 2011-2012 to 2021-2022, the share of households not purchasing fruit and vegetables increased from 5.0% to 8.4% and that, in single-person households, it rose from 11.2% to 19.1%. Male-headed, single-person households with low education and income were more likely not to purchase fruit, and these households also have decreasing vegetable purchases. Additionally, household income significantly impacts fruit purchases but does not significantly affect vegetable purchases. Our findings highlight the importance of considering single-person households as a target population segment for future public policies to promote fruit and vegetable consumption.
Sujet(s)
Caractéristiques familiales , Fruit , Légumes , Humains , Mâle , Femelle , Adulte d'âge moyen , Adulte , Chili , Célibataire/statistiques et données numériques , Comportement du consommateur/statistiques et données numériques , Jeune adulte , Sujet âgé , Enquêtes et questionnaires , Régime alimentaire/statistiques et données numériques , AdolescentRÉSUMÉ
This study explores how the Household Dietary Diversity Score (HDDS) and spatial visualization can inform food governance in Chile, focusing on socio-demographic and geographical determinants affecting food consumption patterns. A national household database (n = 4047), including households from 2019 (n = 3967; 98.02%) and 2020 (n = 80; 1.98%), provided by the "Family Support Program of Food Self-Sufficiency" (FSPFS) of the Ministry of Social Development and Family, was analyzed. The findings revealed that Chilean vulnerable households were led mostly by women (86.6%), with an age average of 55.9 ± 15.6 years old, versus 68.9 ± 12.9 years in the case of men. The intake frequency analysis showed that dairy, fruits, and vegetables were below the recommended values in at least half of the households, and that fats and sugars were above recommended levels. Regarding the HDDS (0-189), the national average was 91.4 ± 20.6 and was significantly influenced by the number of minors in the households, water access, food access issues, and residing in the Zona Sur. Finally, the spatial visualization showed that the Zona Central had higher consumption of fruits and vegetables, while the extreme zones Norte Grande and Zona Austral showed higher intakes of fats and sugars. These findings emphasize the importance of leveraging data insights like the HDDS and spatial visualization to enhance food security and inform food governance strategies.
Sujet(s)
Régime alimentaire , Caractéristiques familiales , Approvisionnement en nourriture , Analyse spatiale , Humains , Chili , Mâle , Femelle , Adulte d'âge moyen , Approvisionnement en nourriture/statistiques et données numériques , Régime alimentaire/statistiques et données numériques , Sujet âgé , Fruit , Adulte , Facteurs socioéconomiques , Légumes , Comportement alimentaireRÉSUMÉ
A reluctance to eat and/or avoidance of novel foods is characterized as food neophobia (FN). FN restricts the diet to familiar foods when, in fact, it should be much more varied. FN can be a barrier to healthy foods, affecting the quality of diet, and impairing children's growth and development. Therefore, according to their caregivers' perceptions, this study aimed to evaluate FN in children from Federal District/Brazil. The Brazilian Children's Food Neophobia Questionnaire (BCFNeo), a specific instrument developed and validated in Brazil, was answered by caregivers of children aged 4 to 11 y/o. Sampling occurred through snowball recruitment, being convenient and non-probabilistic. The Health Sciences Ethics Committee approved the study. The analysis evaluated FN in total (BCFNeoTot) and in the following domains: general (FNgen), for fruits (FNfru), and for vegetables (FNveg). FN scores were compared between sex and child's age and categorized according to three ordinal levels. FN levels were compared using the Mann-Whitney U test. The Friedman test, followed by the Wilcoxon test with Bonferroni correction, was performed to analyze differences in FN according to the environment. Of the caregivers' answers for their children, 595 answers were included, because 19 were out of age. The prevalence of high FN was 42.9%. The domain with the highest prevalence of high FN was vegetables (48.6%). Children aged 8 to 11 y/o had a higher mean FN in two domains (FNgen p = 0.047 and FNveg p = 0.038) when compared to children aged 4 to 7 y/o. Boys were more neophobic in all domains (FNgen p = 0.017; FNfru p = 0.010; FNveg p = 0.013; BCFNeoTot p = 0.008), and FN tends not to decrease with age. The results showed that the children of the FD are more neophobic than Brazilian children in general, highlighting the importance of additional studies in FN determinants in this population and nutritional education interventions to reduce FN among FD children.
Sujet(s)
Trouble de l'alimentation sélective et évitante , Humains , Brésil/épidémiologie , Mâle , Enfant , Femelle , Enfant d'âge préscolaire , Enquêtes et questionnaires , Préférences alimentaires/psychologie , Aidants/psychologie , Légumes , Comportement alimentaire/psychologie , FruitRÉSUMÉ
BACKGROUND: The Mexican lime (Citrus aurantifolia cv.), widely consumed in Iran and globally, is known for its high perishability. Edible coatings have emerged as a popular method to extend the shelf life of fruits, with xanthan gum-based coatings being particularly favored for their environmental benefits. This study aims to evaluate the effectiveness of an edible coating formulated from xanthan gum, enriched with Spirulina platensis (Sp) and pomegranate seed oil (PSO), in improving the quality and reducing the weight loss of Mexican lime fruit under conditions of 20 ± 2 °C and 50-60% relative humidity. RESULTS: Based on the results, the application of coatings was generally effective in reducing fruit weight loss, with the least weight loss observed in the xanthan gum 0.2%+ Spirulina platensis extract (1%) treatment. Additionally, the levels of total phenols and flavonoids in the treated fruits exceeded those in the control group, with xanthan gum 0.2%+ Spirulina platensis extract (1%) and xanthan gum 0.2% exhibiting the highest concentrations of these compounds. The antioxidant capacity of the fruits was also enhanced by the coatings, surpassing that of the control group, with xanthan gum 0.2%+ Spirulina platensis extract (1%) achieving the highest levels. The treatments significantly suppressed the activity of the polyphenol oxidase (PPO) enzyme, with xanthan gum 0.2% demonstrating the most potent inhibitory effect. Furthermore, the treatments resulted in increased activities of catalase (CAT) and peroxidase (POD) enzymes compared to the control. Except for xanthan gum 0.2%+ pomegranate seed oil (0.05%), all treatments maintained the fruit's greenness (a*) more effectively than the control. CONCLUSIONS: Peel browning is a major factor contributing to the decline in quality and shelf life of lime fruit. The application of 0.1% and 0.2% xanthan gum coatings, as well as a combination of 0.2% xanthan gum and Spirulina platensis extract, significantly inhibited PPO activity and enhanced the activity of CAT and POD and phenolic compound in Mexican lime fruits stored at of 20 ± 2 °C for 24 days. Consequently, these treatments comprehensively preserved lime fruit quality by significantly reducing browning, maintaining green color, and preserving internal quality parameters such as TA, thereby enhancing both visual appeal and overall fruit quality.
Sujet(s)
Huiles végétales , Polyosides bactériens , Grenadier commun , Graines , Spirulina , Spirulina/composition chimique , Huiles végétales/pharmacologie , Grenadier commun/composition chimique , Graines/composition chimique , Fruit/composition chimique , Citrus aurantiifolia , Conservation aliments/méthodes , Stockage des aliments , AntioxydantsRÉSUMÉ
Fleshy fruit metabolism is intricately influenced by environmental changes, yet the hormonal regulations underlying these responses remain poorly elucidated. ABA and ethylene, pivotal in stress responses across plant vegetative tissues, play crucial roles in triggering fleshy fruit ripening. Their actions are intricately governed by complex mechanisms, influencing key aspects such as nutraceutical compound accumulation, sugar content, and softening parameters. Both hormones are essential orchestrators of significant alterations in fruit development in response to stressors like drought, salt, and temperature fluctuations. These alterations encompass colour development, sugar accumulation, injury mitigation, and changes in cell-wall degradation and ripening progression. This review provides a comprehensive overview of recent research progress on the roles of ABA and ethylene in responding to drought, salt, and temperature stress, as well as the molecular mechanisms controlling ripening in environmental cues. Additionally, we propose further studies aimed at genetic manipulation of ABA and ethylene signalling, offering potential strategies to enhance fleshy fruit resilience in the face of future climate change scenarios.
Sujet(s)
Acide abscissique , Éthylènes , Fruit , Facteur de croissance végétal , Stress physiologique , Éthylènes/métabolisme , Acide abscissique/métabolisme , Fruit/croissance et développement , Fruit/physiologie , Fruit/métabolisme , Fruit/génétique , Facteur de croissance végétal/métabolisme , Facteur de croissance végétal/physiologie , SécheressesRÉSUMÉ
Animal pollination is crucial for the reproduction and economic viability of a wide range of crops. Despite the existing data, the extent to which citrus crops depend on pollinators to guarantee fruit production still needs to be determined. Here, we described the composition of potential pollinators in citrus (Citrus spp.) from the main growing areas of Argentina; moreover, we combined Bayesian models and empirical simulations to assess the contribution of animal pollination on fruit set and yield ha-1 in different species and cultivars of lemons, grapefruits, mandarins, and oranges. Honeybee (A. mellifera L.) was the most commonly observed potential pollinator, followed by a diverse group of insects, mainly native bees. Regardless of citrus species and cultivars, the probability of flowers setting fruit in pollinated flowers was 2.4 times higher than unpollinated flowers. Furthermore, our simulations showed that about 60% of the citrus yield ha-1 can be attributable to animal pollination across all species and cultivars. Therefore, it is crucial to maintain environments that support pollinator diversity and increase consumer and to producer awareness and demand in order to ensure the significant benefits of animal pollination in citrus production.
Sujet(s)
Citrus , Fleurs , Pollinisation , Pollinisation/physiologie , Animaux , Fleurs/croissance et développement , Abeilles/physiologie , Fruit , Argentine , Théorème de Bayes , Produits agricoles/croissance et développementRÉSUMÉ
Red pitaya fruit has become a source of natural colorant, because it is rich in betalains, a pigment that imparts a red-purple color that interests the food and cosmetics industries. This fruit also possesses high nutritional value, with a range of bioactive compounds known to confer potential health benefits and prevent chronic diseases, such as diabetes, which makes it useful for use as pharmaceutical agents and dietary supplements. In order to improve its technological and biological effects, a concentration will be required. Thus, the microfiltration, followed by vacuum concentration, can be an interesting strategy for this purpose. This study aimed to explore tangential microfiltration to produce microfiltered material, which is an important step to obtain the microfiltered red-purple pitaya concentrate. Therefore, physicochemical and chemical characterization (including 1H NMR analysis) and biological properties (toxicity and diabetes) of this concentrate were assessed, using adult zebrafish as a model. The results show that microfiltration was carried out efficiently, with an average consumption of 95.75 ± 3.13 and 74.12 ± 3.58 kW h m-3, varying according to the material used ("unpeeled pitaya pulp" or "pitaya pulp with peel," respectively). The in vivo tests indicated non-toxicity and hypoglycemic effect of the concentrate, since the blood glucose levels were significantly lower in the zebrafish groups treated with this concentrate in comparison with that of control group. Thus, this study suggests the potential of microfiltered red-purple pitaya concentrate as a promising multifunctional food-derived colorant, exhibiting beneficial biological effects far beyond its attractive color. PRACTICAL APPLICATION: Hylocereus polyrhizus (F.A.C. Weber) Britton & Rose has attracted attention as a potential source of natural colorants because of its red-purple skin and flesh color. In addition, this fruit has a range of bioactive compounds, which make it a valuable resource for providing potential health benefits and preventing chronic diseases such as diabetes. In this paper, the microfiltered red-purple pitaya concentrate showed beneficial biological effects far beyond its attractive color. Thus, this product can be considered a promising multifunctional food-derived colorant to use in the food, pharmaceutical, or cosmetics industries.
Sujet(s)
Cactaceae , Colorants alimentaires , Fruit , Danio zébré , Animaux , Fruit/composition chimique , Colorants alimentaires/pharmacologie , Colorants alimentaires/composition chimique , Cactaceae/composition chimique , Bétalaïnes/pharmacologie , Bétalaïnes/composition chimique , Hypoglycémiants/pharmacologie , Extraits de plantes/pharmacologie , Extraits de plantes/composition chimique , Couleur , Filtration/méthodes , Valeur nutritiveRÉSUMÉ
This article aims to analyze the consumption of healthy food consumption markers, according to racial groups of Brazilian women interviewed in the 2019 National Health Survey (NHS). This work was a cross-sectional study with data from 45,148 white and black women, aged ≥ 20 years. The variables used were the consumption of fruits, vegetables and legumes, beans, and fish. The association between color/race and the dietary intake indicators was tested using crude Poisson regression and adjusted to estimate prevalence ratios and 95% confidence intervals (95%CI). The prevalence of the consumption of fruits and vegetables was statistically higher among white women, while fish and beans was higher among black women. After adjusting for socioeconomic and demographic variables, it was found that black women remained only less likely to consume fruit (PR = 0.91; 95% CI: 0.88-0.95) and only more likely to consume beans (PR = 1.07; 95% CI: 1.04-1.10) than whites. There were racial inequalities for the consumption of healthy foods among Brazilian women, indicating that color/race defined a dietary pattern for black women that put them in vulnerable conditions in terms of fruit consumption.
O objetivo do artigo é analisar o consumo de alimentos marcadores de uma alimentação saudável, segundo os grupos raciais de mulheres brasileiras entrevistadas na Pesquisa Nacional de Saúde 2019. Estudo transversal com dados de 45.148 mulheres brancas e negras de ≥ 20 anos de idade. Os marcadores utilizados foram o consumo de frutas, verduras e legumes e feijão e peixe. A associação de cor/raça com os indicadores de consumo alimentar foi testada por regressão de Poisson bruta e ajustada para estimar razões de prevalência e intervalo de confiança de 95%. A prevalência do consumo de frutas, verduras e legumes foi estatisticamente maior nas brancas, e o de peixes e feijão foi maior nas negras. Após o ajuste pelas variáveis socioeconômicas e demográficas, verificou-se que mulheres negras permaneceram apresentando menores chances apenas de consumir frutas (RP = 0,91; IC95%: 0,88-0,95) e maior somente de consumir feijão (RP = 1,07; IC95%: 1,04-1,10) do que as brancas. Verificaram-se desigualdades raciais para o consumo de alimentos saudáveis entre mulheres brasileiras, indicando que a cor/raça definiu um padrão alimentar para as mulheres negras que as colocam em condições vulneráveis em grande parte do consumo de frutas.
Sujet(s)
38410 , Régime alimentaire sain , 38413 , Humains , Brésil , Femelle , Études transversales , Adulte , Adulte d'âge moyen , Jeune adulte , Régime alimentaire sain/statistiques et données numériques , 38410/statistiques et données numériques , 38413/statistiques et données numériques , Enquêtes de santé , Facteurs socioéconomiques , Comportement alimentaire , Fruit , Légumes , Sujet âgéRÉSUMÉ
Alcoholic fermentation is one of man's most efficient food preservation processes, and innovations in this area are a trend in food science and nutrition. In addition to the classic Saccharomyces yeasts, various other species may have desirable characteristics for obtaining fruit wines. This study investigated the profile of non-Saccharomyces commercial yeasts compared with S. cerevisiae regarding pineapple wine's chemical composition and bioaccessibility. The fermentation profile of the yeasts Lachancea thermotolerans, Brettanomyces bruxellensis, Brettanomyces lambicus, and S. cerevisiae was evaluated for sugar and alcohol content, and the pineapple wines obtained were analyzed for amino acids, phenolics, and organic acids by HPLC and volatile profile by GC/MS. All yeast strains were able to produce ethanol and glycerol at acceptable levels. L. thermotolerans produced higher levels of lactic acid (0.95 g/L) and higher consumption of free amino acids. B. bruxellensis produced higher levels of individual phenolics and ethanol 109 g/L. The alcoholic fermentation process improved the bioaccessibility of phenolics such as catechin (237 %), epigallocatechin gallate (81 %), procyanidin B1 (61 %) and procyanidin B2 (61 %). The yeasts differed in their volatile profiles, with Brettanomyces and Lachancea producing higher levels of compounds associated with pineapple aroma, such as ester ethyl butyrate (260-270 µg/L). These results demonstrate the importance of choosing the yeast strain for the conduction of alcoholic fermentation and that the yeasts Brettanomyces and Lachancea showed technological potential in obtaining pineapple wines. This study contributes to developing processes for obtaining fruit wines by highlighting two non-Saccharomyces yeast species with technological potential for alcoholic fermentations.
Sujet(s)
Ananas , Éthanol , Fermentation , Saccharomyces cerevisiae , Vin , Vin/analyse , Ananas/composition chimique , Saccharomyces cerevisiae/métabolisme , Éthanol/métabolisme , Éthanol/analyse , Phénols/analyse , Phénols/métabolisme , Acides aminés/analyse , Acides aminés/métabolisme , Brettanomyces/métabolisme , Saccharomycetales/métabolisme , Composés organiques volatils/analyse , Chromatographie gazeuse-spectrométrie de masse , Fruit/composition chimiqueRÉSUMÉ
This study aimed to optimize the ultrasound-assisted extraction (UAE) of anthocyanins from oven-dried and freeze-dried Vitis labrusca grape pomace, using acidified water as the solvent. The effects of power density (8.3-16.7 W/mL), pulse interval (0-2 s), and extraction time (1-5 min) on both total and specific anthocyanins were investigated. The findings suggested that acidified water can be a viable alternative to conventional solvents and that oven drying was an effective method for drying the pomace. Using response surface methodology, the study identified power density and extraction time as key factors influencing total anthocyanin content, with extracts reaching contents up to 2.56 mg/g. The analysis using LC-MS identified 14 anthocyanins, while NMR quantified 3 and malvidin diglucoside was generally the most abundant. However, higher power and longer extraction times were found to reduce its content while increasing malvidin monoglucoside content, suggesting ultrasound-induced anthocyanin hydrolysis. In conclusion, this study presents a sustainable method for extracting anthocyanins using acidified water, contributing to the valorization of Vitis labrusca grape pomace for industrial use.