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This study examined the influence of linguistic input on the development of productive and receptive skills across three fundamental language domains: lexico-semantics, syntax, and phonology. Seventy-one (35 female) Basque-Spanish bilingual children were assessed at three time points (Fall 2018, Summer 2019, Winter 2021), between 4 and 6 years of age, by specifically examining language knowledge and spontaneous language use in each language. A direct impact of the amount of linguistic exposure on the longitudinal growth of lexico-semantic and syntactic abilities was observed in both languages. While phonological skills were not directly influenced by exposure, they were more proficient in the more exposed language. The use of lexically diverse and syntactically rich utterances developed relatively later than language knowledge, both supported by the amount of linguistic exposure.
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BACKGROUND: 'Karaerik' is a novel table grape (Vitis vinifera L.) native to Turkey and widely cultivated in areas bordering the city of Erzincan. Because of the demonstrated beneficial effects on human health of the grape phenolic composition, the aim of this work was to conduct a detailed profiling of non-anthocyanin phenolic fractions from different grape tissues of the 'Karaerik' table grape. Both qualitative and quantitative characterization of phenolic compounds were achieved using high-performance liquid chromatography-diode array detection-electrospray ionization-tandem mass spectrometry. Total phenolic content and oxygen radical absorbance capacity were also determined to evaluate the antioxidant properties of this table grape. RESULTS: A high number of non-anthocyanin phenolic compounds was identified in 'Karaerik' table grape skins and seeds, including 11 flavonols, six hydroxycinnamic acid derivatives, two stilbenes, several monomeric and dimeric flavan-3-ols and proanthocyanidins. Quercetin-type derivatives dominated the flavonol profile of grape skins, followed by myricetin type. Tartaric acid esters of three acids (caffeic, coumaric and ferulic acids) were the main hydroxycinnamic acid derivatives in this cultivar. Qualitative and quantitative differences were observed in flavan-3-ol composition among the grape tissues. Proanthocyanidins were the most abundant class of phenolic compounds in 'Karaerik' grapes, being mainly located in seeds. Higher antioxidant capacity values were determined in grape seeds, in correlation with the total phenolic content. CONCLUSION: These results provide useful information for a better understanding of phenolic antioxidants from the 'Karaerik' table grape and will contribute to promoting the varietal identity and health-related properties of this fruit. © 2021 Society of Chemical Industry.
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Antioxidantes/química , Fenoles/química , Extractos Vegetales/química , Vitis/química , Cromatografía Líquida de Alta Presión , Frutas/química , TurquíaRESUMEN
Chemical profiling of Buddleja globosa was performed by high-performance liquid chromatography coupled to electrospray ionization (HPLC-DAD-ESI-IT/MS) and quadrupole time-of-flight high-resolution mass spectrometry (HPLC-ESI-QTOF/MS). The identification of 17 main phenolic compounds in B. globosa leaf extracts was achieved. Along with caffeoyl glucoside isomers, caffeoylshikimic acid and several verbascoside derivatives (ß-hydroxyverbascoside and ß-hydroxyisoverbascoside) were identified. Among flavonoid compounds, the presence of 6-hydroxyluteolin-7-O-glucoside, quercetin-3-O-glucoside, luteolin 7-O-glucoside, apigenin 7-O-glucoside was confirmed. Campneoside I, forsythoside B, lipedoside A and forsythoside A were identified along with verbascoside, isoverbascoside, eukovoside and martynoside. The isolation of two bioactive phenolic compounds verbascoside and forsythoside B from Buddleja globosa (Buddlejaceae) was successfully achieved by centrifugal partition chromatography (CPC). Both compounds were obtained in one-step using optimized CPC methodology with the two-phase solvent system comprising ethyl acetate-n-butanol-ethanol-water (0.25:0.75:0.1:1, v/v). Additionally, eight Natural Deep Eutectic Solvents (NADESs) were tested for the extraction of polyphenols and compared with 80% methanol. The contents of verbascoside and luteolin 7-O-glucoside after extraction with 80% methanol were 26.165 and 3.206 mg/g, respectively. Among the NADESs tested in this study, proline- citric acid (1:1) and choline chloride-1, 2- propanediol (1:2) were the most promising solvents. With these NADES, extraction yields for verbascoside and luteolin 7-O-glucoside were 51.045 and 4.387 mg/g, respectively. Taken together, the results of this study confirm that CPC enabled the fast isolation of bioactive polyphenols from B. globosa. NADESs displayed higher extraction efficiency of phenolic and therefore could be used as an ecofriendly alternative to classic organic solvents.
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Buddleja/química , Extractos Vegetales/química , Polifenoles/química , Centrifugación , Cromatografía , Extractos Vegetales/clasificación , Extractos Vegetales/aislamiento & purificación , Hojas de la Planta/química , Polifenoles/clasificación , Polifenoles/aislamiento & purificación , Solventes/químicaRESUMEN
INTRODUCTION: During the COVID-19 pandemic, adherence to hygiene measures is an objective aimed at reducing morbidity and mortality. OBJECTIVE: To evaluate adherence to hand hygiene and protection measures during the COVID-19 pandemic in a tertiary care hospital. METHODS: Cross-sectional study on health personnel handwashing at the five moments recommended by the World Health Organization, as well as on the use of specific personal protective equipment. RESULTS: One hundred and seventeen hand hygiene opportunities were observed in health personnel. Hand washing was observed in 40 (34 %) and omission in 76 (65 %). Adherence to the use of face shield was observed in five (4 %), and lack of adherence in 112 (96%). Adherence to the use of face mask was observed in 65 nursing professionals (87 %), with appropriate use of the mask in 56 of them (60 %) and use of face shield in one (1 %). CONCLUSION: Health personnel showed low proportions of adherence to hand hygiene and use of equipment for specific protection during the COVID-19 pandemic.
INTRODUCCIÓN: Ante la pandemia de COVID-19, el apego a las medidas de higiene es un objetivo para disminuir la morbimortalidad. OBJETIVO: Evaluar el apego a la higiene de manos y medidas de protección durante la pandemia de COVID-19 en un hospital de tercer nivel. MÉTODOS: Estudio transversal acerca del lavado de manos del personal de salud en los cinco tiempos recomendados por la Organización Mundial de la Salud, así como sobre el uso del equipo de protección personal específico. RESULTADOS: Fueron observadas 117 oportunidades de higiene de manos en personal de salud: 40 (34 %) respecto al lavado de manos y 76 (65 %) respecto a su omisión; sobre el apego al uso de careta en cinco (4 %) y sobre la falta de apego en 112 (96 %). Se identificó apego al uso de mascarilla en 65 profesionales de enfermería (87 %), uso adecuado de mascarilla en 56 de ellos (60 %) y uso de careta en uno (1 %). CONCLUSIÓN: El personal mostró baja proporción de apego a la higiene de manos y al uso de equipo para la protección específica durante la pandemia de COVID-19.
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COVID-19/prevención & control , Adhesión a Directriz/estadística & datos numéricos , Higiene de las Manos/estadística & datos numéricos , Equipo de Protección Personal/estadística & datos numéricos , Personal de Hospital/estadística & datos numéricos , Estudios Transversales , Femenino , Higiene de las Manos/normas , Humanos , Masculino , Personal de Hospital/normas , Estudios Prospectivos , Centros de Atención Terciaria , Factores de TiempoRESUMEN
BACKGROUND: Grape berries exhibit various beneficial health effects due to the potent antioxidant roles of their phenolic compounds. A new Vitis vinifera grape cultivar (Karaerik) grown in Turkey has attracted growing interest due to its antioxidant phenolic compounds, which have still not been investigated. The phenolic/anthocyanin profile needs to be investigated to ascertain its potential health benefits and market value in the region. The present study therefore involves a detailed characterization of the anthocyanin composition of 'Karaerik' grape berries in conjunction with a determination of the antioxidant capacity value of the phenolics present in the skin and the whole berry. RESULTS: Total phenolic compounds (average 8.56 and 2.88 g gallic acid equivalent kg-1 fresh weight) and anthocyanin (7.48 and 1.66 g mv-3-glc equivalent kg-1 fresh weight) contents varied significantly in the skin and whole berry. Malvidin-based anthocyanins made the highest contribution to the pigment content of the berry. Accordingly, the major anthocyanin in the skin (average 42.08 mol%) and whole berry (39.98 mol%) was malvidin-3-glucoside (mv-3-glc). In addition, we found strong evidence of the occurrence of sometimes reported malvidin-3-pentoside and particularly of the not previously reported feruloyl derivative of malvidin-3-(6â³-feruloyl)-glucoside (mv-3-ferglc) for V. vinifera grapes. CONCLUSION: The current study is the first report to profile the anthocyanins of the grape with a detailed description of the rare and novel anthocyanin in V. vinifera grapes. The berry is also a potential source of phenolics/anthocyanins with a high antioxidant capacity value and is worthy of comparison with other V. vinifera grapes. © 2019 Society of Chemical Industry.
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Antocianinas/química , Extractos Vegetales/química , Vitis/química , Antioxidantes/química , Cromatografía Líquida de Alta Presión , Frutas/química , Fenoles/química , Espectrometría de Masa por Ionización de Electrospray , TurquíaRESUMEN
Glycosylated flavanols (monoglycosides and diglycosides) in skin and seed extracts of Vitis vinifera grapes grown in Castilla-La Mancha (Spain) were investigated using ultra-high-performance liquid chromatography-tandem mass spectrometry (UHPLC-ESI-QQQ-MS/MS). Six grape varieties (Airén, Tempranillo, the recently identified Albillo Dorado, Montonera del Casar, Moribel, and Tinto Fragoso) were studied over two consecutive years (2016 and 2017). A total of twenty monomeric flavanol monoglycosides, four diglycosylated monomers, and three dimeric flavanol monoglycosides were detected in all grape samples. The diversity observed in the composition of glycosylated flavanol in the grape berries suggests a strong influence of variety and grape tissue (skin or seed). Monomeric flavanol glycosides were more abundant in grape seed extracts, in contrast with monoglycosylated dimeric forms. In addition, the glycosylated flavanol content was related to berry color in grape skins, with higher concentrations measured in black grape varieties.
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Flavonoides/química , Glicósidos/química , Extracto de Semillas de Uva/química , Semillas/química , Vitis/química , Cromatografía Líquida de Alta Presión/métodos , Polifenoles/química , España , Espectrometría de Masa por Ionización de Electrospray/métodos , Espectrometría de Masas en Tándem/métodos , VinoRESUMEN
BACKGROUND: Due to the current dominance of a few grape varieties in the wine market, the aim of this work was to study the detailed phenolic and volatile composition, chromatic characteristics, and sensorial properties of red wines elaborated with new Vitis vinifera grapes (Moribel and Tinto Fragoso) identified using the High Perfomance Liquid Chromatography-Diode Array Detector-Electrospray Ionization-Tandem Mass Spectrometry (HPLC-DAD-ESI-MS/MS), Gas Chromatography- Mass Spectrometry (GC-MS), CIELab color space, and Napping ® techniques. RESULTS: Tinto Fragoso wine showed higher phenolic content than Moribel, with more anthocyanins, flavonols, and stilbenes. These wines also contained anthocyanin diglucosides not reported for Vitis vinifera wines. The odor activity values of free volatile compounds were calculated to indicate their influence on wine aroma, the fruity aromas of Moribel standing out particularly. The wines studied were positively evaluated by the tasters. Moribel's sensory profile was characterized by red fruit aromas and Tinto Fragoso showed more aromatic intensity and persistence in the mouth. CONCLUSION: The results obtained from the first characterization of red wines made from novel Vitis vinifera grapes suggest that Moribel and Tinto Fragoso could be appropriate raw materials for the elaboration of quality young red wines. Tinto Fragoso provided wines with sensorial properties different from those of Tempranillo, and could be an alternative to the well known red wines on the market. © 2018 Society of Chemical Industry.
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Gusto , Compuestos Orgánicos Volátiles/química , Vino/análisis , Antocianinas/química , Cromatografía Líquida de Alta Presión , Frutas/química , Cromatografía de Gases y Espectrometría de Masas , Humanos , Odorantes/análisis , Fenoles/química , Espectrometría de Masas en Tándem , Vitis/químicaRESUMEN
Cortical tracking of speech is relevant for the development of speech perception skills. However, no study to date has explored whether and how cortical tracking of speech is shaped by accumulated language experience, the central question of this study. In 35 bilingual children (6-year-old) with considerably bigger experience in one language, we collected electroencephalography data while they listened to continuous speech in their two languages. Cortical tracking of speech was assessed at acoustic-temporal and lexico-semantic levels. Children showed more robust acoustic-temporal tracking in the least experienced language, and more sensitive cortical tracking of semantic information in the most experienced language. Additionally, and only for the most experienced language, acoustic-temporal tracking was specifically linked to phonological abilities, and lexico-semantic tracking to vocabulary knowledge. Our results indicate that accumulated linguistic experience is a relevant maturational factor for the cortical tracking of speech at different levels during early language acquisition.
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Lettuce is a vegetable that contributes vitamins, minerals, fibre, phenolic compounds and antioxidants to the human diet. In the search for improving production conditions and crop health, the use of microorganisms with plant growth-promoting capabilities, such as soil yeasts (PGPY), in conjunction with nanotechnology could offer sustainable development of agroecosystems. This study evaluated the synthesis of health-promoting bioactive compounds in lettuce under the application of soil yeast and an iron nanoparticle (NP-Fe2O3) encapsulated in alginate beads. Two yeast strains, Candida guillermondii and Rhodotorula mucilaginosa, and a consortium of both yeasts were used in the presence and absence of Fe2O3-NPs. Phenolic compounds were identified and quantified via HPLC-ESI-Q-ToF and antioxidant activity. Ten phenolic compounds were identified, highlighting the chicoric acid isomer and two quercetin glycosides with high concentrations of up to 100 µg g-1 in treatments with C. guillermondii. Treatments with R. mucilaginosa and NPs-Fe2O3 presented an increase in antioxidant activity, mainly in TEAC, CUPRAC and DPPH activities in leaves, with significant differences between treatments. Therefore, the use of encapsulated soil yeasts is a viable alternative for application in vegetables to improve the biosynthesis and accumulation of phenolic compounds in lettuce and other crops.
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BACKGROUND: The beneficial properties of wine by-products include actions that help prevent and treat cardiovascular conditions such as hypertension, primarily due to their antioxidant effects. Novel pharmacotherapies are being developed to treat arterial hypertension, including investigations into natural products exhibiting biological activity, necessitating rigorous evaluation of their efficacy and safety. This study aimed to identify and quantify phenolic compounds in Syrah (Vitis vinifera) grapes grown in the Brazilian Cerrado and their presence in winemaking by-products. It also examined the effects of grape pomace on blood pressure. METHODS: Fresh grapes, pomace, and lees, were subjected to spectrophotometric determination of total phenolic compounds, followed by identification and quantification using HPLC-DAD-ESI-MSn. Normotensive male rats (Wistar) and spontaneously hypertensive rats (SHR) received grape pomace-enriched (150 or 300 mg/kg/day, 14 days) or standard chow. Indirect arterial pressure was assessed, while vascular reactivity was evaluated in mesenteric resistance arteries. RESULTS: Pomace samples exhibited higher total phenolic compound concentrations than grapes or lees. Seven derivatives of hydroxycinnamic acids and twenty-one flavonols were identified. Quercetin-3-glucoside and ethyl caffeate were the most abundant phenolic compounds. Grape pomace-enriched chow demonstrated a dose-dependent hypotensive effect in rats. CONCLUSION: the abundance of flavonols and hydroxycinnamic acids, combined with their hypotensive effects, underscores the therapeutic potential of fine wine-making by-products produced in the Brazilian Cerrado.
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Antihipertensivos , Presión Sanguínea , Hipertensión , Fenoles , Ratas Endogámicas SHR , Ratas Wistar , Vitis , Vino , Animales , Vitis/química , Masculino , Fenoles/análisis , Fenoles/farmacología , Presión Sanguínea/efectos de los fármacos , Hipertensión/tratamiento farmacológico , Ratas , Vino/análisis , Antihipertensivos/farmacología , Antioxidantes/farmacología , Antioxidantes/análisis , Extractos Vegetales/farmacología , Frutas/química , BrasilRESUMEN
One of the problems that most seriously affects oenology today is enzymatic browning, especially when grapes are infected by grey rot. We studied the capacity of glutathione (GSH) and a specific inactivated dry yeast rich in glutathione (IDY-GSH) to protect white grape must from browning compared to that of sulphur dioxide (SO2). The results indicate that SO2 drastically reduces the oxygen consumption rate (by around 72%), protects hydroxycinnamic acids from oxidation and prevents grape must against browning even in the presence of laccase. Specifically, the presence of SO2 reduced the colour's blue-yellow component (b*) by around 91% in control conditions and around 76% in the presence of laccase. GSH, pure or in the form of IDY-GSH, also reduces the oxygen consumption rate (by 23% and 36%, respectively) but to a lesser extent than SO2. GSH also favours the formation of grape reaction product (GRP) from hydroxycinnamic acids and effectively protects grape must against browning in healthy grape conditions. Specifically, the presence of GSH reduced b* by around 81% in control conditions. Nevertheless, in the presence of laccase, it was not effective enough, reducing b* by around 39% in the case of pure GSH and 24% in the case of IDY-GSH. Therefore, both forms of GSH can be considered as interesting alternative tools to SO2 for preventing browning in white grape must, but only when the grapes are healthy.
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The BRS Carmem grape was developed as an alternative for processing juices and wines. This study aimed to determine the phenolic compounds (PC) in the edible parts of this grape from two harvests-one harvested at ideal maturation time and another when the grapes were still immature-using HPLC-DAD-ESI-MS/MS. Student's t-test was used (α = 0.05) to evaluate differences in the PC content between the edible parts and between the harvests. Both skins showed a predominance of flavonols, anthocyanins, hydroxycinnamic acids derivatives (HCAD) and stilbenes, with higher concentrations for harvest 1 than harvest 2. For both harvests (harvest 1 and harvest 2), the HCAD (mg of caftaric acidâ¢kg fruit-1) was higher in whole grapes (383.98 and 67.09) than in their skins (173.95 and 21.74), with a predominance of trans-caffeic acid for all samples; the flavan-3-ols and proanthocyanidins (mg of (+)-catechinâ¢kg fruit-1) presented higher concentrations in the seeds (flavan-3-ols: 203.20 and 182.71, proanthocyanidins: 453.57 and 299.86) than in the skins (flavan-3-ols: 1.90 and 4.56, proanthocyanidins: 37.58 and 98.92); the stilbenes concentration (µg 3-glc-resveratrolâ¢kg fruit-1) was higher for the seeds from harvest 2 (896.25) than those from harvest 1 (48.67). BRS Carmem grapes contain a phenolic composition complex, and still have a relevant concentration of flavonols, anthocyanins and stilbenes, even when immature.
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PURPOSE: The purpose of this study is to characterize the local (utterance-level) temporal regularities of child-directed speech (CDS) that might facilitate phonological development in Spanish, classically termed a syllable-timed language. METHOD: Eighteen female adults addressed their 4-year-old children versus other adults spontaneously and also read aloud (CDS vs. adult-directed speech [ADS]). We compared CDS and ADS speech productions using a spectrotemporal model (Leong & Goswami, 2015), obtaining three temporal metrics: (a) distribution of modulation energy, (b) temporal regularity of stressed syllables, and (c) syllable rate. RESULTS: CDS was characterized by (a) significantly greater modulation energy in the lower frequencies (0.5-4 Hz), (b) more regular rhythmic occurrence of stressed syllables, and (c) a slower syllable rate than ADS, across both spontaneous and read conditions. DISCUSSION: CDS is characterized by a robust local temporal organization (i.e., within utterances) with amplitude modulation bands aligning with delta and theta electrophysiological frequency bands, respectively, showing greater phase synchronization than in ADS, facilitating parsing of stress units and syllables. These temporal regularities, together with the slower rate of production of CDS, might support the automatic extraction of phonological units in speech and hence support the phonological development of children. SUPPLEMENTAL MATERIAL: https://doi.org/10.23641/asha.21210893.
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Percepción del Habla , Habla , Adulto , Preescolar , Familia , Femenino , Humanos , Lenguaje , Lectura , Habla/fisiología , Percepción del Habla/fisiologíaRESUMEN
BACKGROUND: There has been recent interest in the seric levels of procalcitonin (PCT) and C reactive protein (PCR) as a marker of intraabdominal infection after a colorrectal surgery, however, the actual literature remains inconclusive. OBJECTIVE: To test if C-Reactive Protein (PCR) and procalcitonin (PCT) as predictive factors of anastomotic leak after colorectal surgery. METHOD: Retrospective cohort, of patients with ileostomy or colostomy who had intestinal transit restitution by general surgeons in our center, from march 2018 to march 2020. RESULTS: We registered 4 (36.4%) anastomotic leaks. We compared median PCR and PCT between group 1 (without anastomotic leak) and group 2 (with anastomotic leak). Median PCT3PO was 4.86 ng/ml in group 1 vs 13.7 ng/ml in group 2, and PCT5PO was 1.3071 ng/ml vs 6.74 ng/ml (DS: 5.04 vs. 11.53 and 0.779 vs. 10.44). Median PCR3PO and PCR5PO was 194.7 mg/l in group 1 vs 100.97 mg/l in group 2, and 159.8 mg/l vs 65.67 mg/l, (DS: 88.78 vs. 82.01 and 94.77 vs. 58.009). CONCLUSIONS: Persistent higher levels of seric PCR and PCT at 3rd and 5th postoperative day could be an anastomotic leackage. This biomarkers might be added as additional criteria of discharge.
ANTECEDENTES: La medición sérica de procalcitonina (PCT) y proteína C reactiva (PCR) como marcadores de infección intraabdominal posterior a la cirugía colorrectal ha tomado interés en los recientes años, sin embargo, la literatura que existe en la actualidad no es concluyente. OBJETIVO: Evaluar los biomarcadores séricos de inflamación procalcitonina (PCT) y proteína C reactiva (PCR) como factores predictores para dehiscencia de anastomosis (DA) en cirugía colorrectal. MÉTODO: Cohorte retrospectiva de pacientes con cirugía abdominal, con ileostomía o colostomía, que fueron protocolizados para restitución del tránsito intestinal por el departamento de cirugía general en un hospital de tercer nivel, de marzo de 2018 a marzo de 2020. RESULTADOS: La DA ocurrió en 4 (36.4%) de 11 pacientes. Se comparó la media de dos grupos: el grupo 1 sin DA frente al grupo 2 que presentaron DA. Las concentraciones séricas de PCT3PO fueron de 4.86 ng/ml en el grupo 1 y 13.7 ng/ml en el grupo 2, y las de PCT5PO fueron de 1.3071 ng/ml y 6.74 ng/ml, respectivamente (desviación estándar [DE]: 5.04 vs. 11.53 y 0.779 vs. 10.44). Las concentraciones séricas de PCR3PO fueron de 194.7 mg/l en el grupo 1 y 100.97 mg/l en el grupo 2, y las de PCR5PO fueron de 159.8 mg/l y 65.67 mg/l, respectivamente (DE: 88.78 vs. 82.01 y 94.77 vs. 58.009). CONCLUSIONES: La persistencia de valores elevados den PCR y PCT séricas al tercer y quinto día posoperatorios pudieran demostrar DA. Estos marcadores podrían agregarse como criterio de egreso.
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Estudios Retrospectivos , HumanosRESUMEN
Semantic prediction and cortical entrainment to the acoustic landmarks of the speech envelope are two fundamental yet qualitatively different mechanisms that facilitate speech comprehension. However, it is not clear how and to what extent those mechanisms interact with each other. On the one hand, richer semantic context could enhance the perceptual representation of a predictable stimulus, thus improving speech entrainment. On the other hand, pre-activating an upcoming item could inhibit further bottom-up analyses to minimize processing costs, thus weakening speech entrainment. To test these competing hypotheses, we recorded EEG activity from 27 participants while they listened to a 14-min recording of text reading. The passage contained target words presented twice: once in a highly constraining and once in a minimally constraining context. First, we measured event related potentials on target words in the two conditions. In line with previous research, we showed that semantic predictability modulated the N400 amplitude: words in minimally constraining contexts elicited larger negative amplitudes than words in highly constraining contexts between 250 and 450 ms. Second, we evaluated speech entrainment effects by analyzing phase alignment between neural activity and the envelope of target words. Importantly, we found increased speech entrainment for words in minimally constraining compared to highly constraining contexts between 400 and 450 ms. Both effects were located in central electrodes and were significantly correlated. Our results indicate a trade-off between semantic pre-activation and cortical entrainment to speech and support the cost minimization hypothesis.
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Percepción del Habla , Habla , Encéfalo , Comprensión , Electroencefalografía , Potenciales Evocados , Femenino , Humanos , Masculino , SemánticaRESUMEN
Peumus boldus Mol., is a Chilean medicinal tree used for gastrointestinal and liver diseases. Such medicinal properties are associated with the presence of bioactive flavonoids and aporphine alkaloids. In this study, a new green and efficient extraction method used seven natural deep eutectic solvents (NADES) as extraction media. The extraction efficiency of these NADES was assessed, determining the contents of boldine and total phenolic compounds (TPC). Chemical profiling of P. boldus was done by high-performance liquid chromatography coupled to photo diode array detector and electrospray ion-trap mass spectrometry (HPLC-PDA-ESI-IT/MS) and electrospray ionization quadrupole time-of-flight high-resolution mass spectrometry (HPLC-ESI-QTOF-MS). Among the NADES tested, NADES4 (choline chloride-lactic acid) and NADES6 (proline-oxalic acid) enable better extraction of boldine with 0.427 ± 0.018 and 2.362 ± 0.055 mg of boldine g-1 of plant, respectively. Extraction of boldine with NADES4 and NADES6 was more efficient than extractions performed with methanol and water. On the other hand, the highest TPC were obtained using NADES6, 179.442 ± 3.79 mg of gallic acid equivalents (GAE g-1). Moreover, TPC in extracts obtained with methanol does not show significant differences with NADES6. The HPLC-PAD-MS/MS analysis enable the tentative identification of 9 alkaloids and 22 phenolic compounds. The results of this study demonstrate that NADES are a promising green extraction media to extract P. boldus bioactive compounds and could be a valuable alternative to classic organic solvents.
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A large number of theories about the development and maintenance of paranormal beliefs have been raised in the literature. There is, however, a lack of studies designed to integrate the different perspectives. We reviewed the literature and explored a series of factors in a sample of 180 individuals. Seven variables showed significant correlation indices at α = .01. A regression analysis revealed subjective paranormal experience as the variable that contributed the most to the explanation of paranormal belief, z = .43, 95% confidence interval (CI) [.24, .56]. Need for achievement (z = .31, 95% CI [.11, to .46]), conditional reasoning (z = .10, 95% CI [.09, .28]), and schizotypy (z = .29, 95% CI [.09, .45]) also contributed significantly in the equation. The associations found between the subscales of the Needs Questionnaire and belief in the paranormal support the hipothesis that paranormal belief may serve basic psychological needs. Similarly, the association found in the case of schizotypy suggests that paranormal belief might be held within the context of psychopathology. There was no evidence, however, supporting the hypothesis of a reasoning deficit in believers. It was concluded that, once paranormal beliefs develop, there is an interaction between belief and experience that strongly contributes towards its maintenance.
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Cognición , Parapsicología , Personalidad , Adulto , Femenino , Humanos , Masculino , Encuestas y CuestionariosRESUMEN
The ability to obtain different wines with a singular organoleptic profile is one of the main factors for the wine industry's growth, in order to appeal to a broad cross section of consumers. Due to this, white wines made from the novel grape genotypes Albillo Dorado and Montonera del Casar (Vitis vinifera L.) were studied and compared to the well-known Airén at two consecutive years. Wines were evaluated by physicochemical, spectrophotometric, high-performance liquid chromatography-diode array detection-mass spectrometry, gas chromatography-mass spectrometry and sensory analyses. The chromatic characteristics of the new wines were defined by more color purity than Airén, with greenish highlights. In general, the phenolic profile of the Albillo Dorado wines showed a higher flavonol and hydroxycinnamic acid derivative content. Several volatile compounds were determined, and their odor activity values were calculated to determine their impact on wine aroma. A fruity series dominated the wine aromatic composition, but spicier and greener notes characterized the aroma profile of Airén wines. Albillo Dorado and Montonera del Casar were sensory evaluated as wines with a less fresh taste compared to Airén. Unique chemical and sensory profiles were determined for wines made from these novel grape genotypes, providing alternative monovarietal wines to encourage the wine market growth and extend the offer to consumers.
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Grapes are considered to be a major source of phenolic compounds as compared with other fruits. To improve the quality of table grapes, some techniques like thinning can be used. In addition, grape cultivars with distinct characteristics are directly linked to its phenolic profile. This study aimed to identify and quantify the phenolic compound profile and yield of the hybrid 'BRS Vitoria' seedless table grape under different bunch densities, using a combination of solid-phase extraction (SPE) methodologies and analytical high-performance liquid chromatography-diode array detector with tandem mass spectrometry (HPLC-DAD-ESI-MS/MS). A trial was carried out in 2016, in a commercial vineyard at Marialva, state of Parana (South Brazil). Three weeks after anthesis, the following bunch densities were evaluated: 4.0, 4.5, 5.0, 5.5, and 6 bunches per m2 (corresponding to an estimation of 16, 18, 20, 22, and 24 tons ha-1). The randomized block design was used as a statistical model with each treatment was replicated four times, with one vine per plot. Different characteristics were evaluated at harvest, e.g., soluble solids content (SS), total acidity (TA), maturation index (MI = SS/TA), bunch and berry masses, yield, as well hydroxycinnamic acid derivative (HCAD), anthocyanin, flavonol, and flavan-3-ol contents by HPLC-DAD-ESI-MS/MS analysis. The evaluated bunch densities did not interfere with the physicochemical characteristics of the berries, such as SS and MI. Under the density of 6.0 bunches per m2, the highest yield of 25 tons ha-1 was reached. Under all bunch densities, the phenolic profile presented the same compounds, but at different concentrations. Under a density of 5.0 bunches per m2, the compounds belonging to the anthocyanin and flavonol families were present in high concentrations. In contrast, at the densities of 4.0 and 4.5 bunches per m2, there was a reduction in the flavan-3-ol content. With respect to stilbenes, only the trans-piceid and its cis- isomer were detected. However, their concentrations had no significant influence on the evaluated bunch densities.
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Cromatografía Líquida de Alta Presión/métodos , Frutas/química , Fenoles/química , Espectrometría de Masas en Tándem/métodos , Vitis/crecimiento & desarrollo , Ácidos Cumáricos/química , Productos Agrícolas , Flavonoles/química , Proantocianidinas/química , Estilbenos/químicaRESUMEN
The chemical oxidation of white wines through the Fenton reaction has been widely studied, wherein the primary species is the hydroxyl radical (OH). This radical possesses high oxidising power and may oxidise the primary components in wines. The Fenton reaction in wines is complex and includes the participation of phenolic compounds, organic acids, and metals. However, there has been no systematic study to date that relates wine composition to OH production in real white wines. In this paper, a multivariate model was generated using the partial least squares (PLS) algorithm, and linear correlations were established between wine composition and OH production. Based on the results, the variables were classified as either pro-oxidants (malic acid, p-coumaric acid, and caffeic acid, % prodelphinidins, procyanidins B1, Mn, Cu, and Zn) or antioxidants (cis-piceid, ellagic acid, gallic acid, proanthocyanins, glucose, and proton concentration). Finally, the pathways by which wine compounds participate in OH production are discussed.