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1.
J Clin Nurs ; 2024 Mar 25.
Artigo em Inglês | MEDLINE | ID: mdl-38528583

RESUMO

OBJECTIVES: (1) To describe existing tools to assess the burden of informal caregivers of people with cancer, (2) to describe how these tools have been validated and (3) to describe the areas of interest of existing assessment tool entries. BACKGROUND: The caregiver burden of informal caregivers of people with cancer greatly affects their lives. There is a wide variety of relevant assessment tools available, but there are no studies to help researchers to select tools. METHODS: A search was conducted using the keywords 'cancer', 'caregiver', 'burden' and 'scale' in Medline (PubMed), CINAHL and EMBASE to include articles that developed or applied tools to assess the burden on informal caregivers of cancer patients. Once eligible tools were identified, we searched their 'primary reference' studies. If the original scale was assessed in a population other than informal caregivers of cancer patients, we again searched for psychometric measures in the population of caregivers of cancer patients. RESULTS: This study retrieved 938 articles on developing or applying the informal caregiver burden instrument for cancer patients, including 42 scales. Internal consistency of the original scales ranged from 0.53 to 0.96. Nineteen scales initially developed to assess caregiver burden for patients with dementia, stroke and other disorders were later used for caregivers of cancer patients, eight of which have not yet been validated. Reclassifying all scale domains of concern revealed that scale assessments focused more on caregivers' physical health, emotional state and caregiving tasks. CONCLUSION: This review identifies many scales for assessing informal caregiver burden in cancer patients and gives scales recommended. However, a portion still needs to be validated. The development of a new scale proposes to be based on a theoretical framework and to consider dimensions for assessing support resources. IMPACT: What problem did the study address?: This paper collates assessment tools on the burden of informal carers of people with cancer. It also provides information on the applicable population, reliability and validity. What were the main findings?: 41 scales could be considered for use, eight of which have not been validated. The scales focus more on assessing caregivers' physical health, emotional state and caregiving tasks, and less on the dimension of support resources. Where and on whom will the research have an impact?: There are implications for informal carers of cancer patients in hospitals or in the community, as well as for relevant researchers. REPORTING METHOD: Retrieved with reference to systematic evaluation. PATIENT OR PUBLIC CONTRIBUTION: No patient or public contribution.

2.
Ultrason Sonochem ; 103: 106796, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38350241

RESUMO

Curation meat products involves multiple stages, including pre-curing processing (thawing, cleaning, and cutting), curing itself, and post-curing processing (freezing, and packaging). Ultrasound are nonthermal processing technology widely used in food industry. This technology is preferred because it reduces the damages caused by traditional processing techniques on food, while simultaneously improving the nutritional properties and processing characteristics of food. The utilization of ultrasonic-assisted curing technology has attracted significant attention within the realm of meat product curing, encouraging extensive research efforts. In terms of curing meat products, ultrasonic-assisted curing technology has been widely studied due to its advantages of accelerating the curing speed, reducing nutrient loss, and improving the tenderness of cured meats. Therefore, this article aims to comprehensively review the application and mechanism of ultrasound technology in various stages of meat product curing. Furthermore, it also elaborates the effects of ultrasonic-assisted curing on the tenderness, water retention, and flavor substances of the meat products during the curing process. Besides, the implication of the ultrasound in the processing of meat curation plays a potent role together with other technologies or methods. The use of ultrasound technology in the process of meat curation was analyzed, which might be a theoretical insight for the industrialization prospects of the meat product.


Assuntos
Produtos da Carne , Ultrassom , Carne/análise , Manipulação de Alimentos/métodos
3.
Int J Biol Macromol ; 257(Pt 1): 128562, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38056154

RESUMO

In this study, xanthan gum (XG), sodium alginate (SA), guar gum (GG), and gum Arabic (GA), were used to modify Lotus root starch (LRS). The incorporation XG, SA, and GG significantly (p < 0.05) influence the swelling power (SP) of LRS, among which the 1.5 % of XG exhibited the highest value of 25.84 g/g at 90 °C. Gelatinization analysis revealed that XG raised the final viscosity (FV) and lowered the breakdown (BD), while SA significantly increased peak viscosity (PV) and BD. Furthermore, GG and GA exhibited a substantial reduction in setback (SB). The incorporation of XG, SA, and GG enhanced the rheological and structural properties (e.g., gel strength and elasticity) of LRS. Particularly, XG demonstrated a more prominent effect, while GA exhibited an opposite trend. Moreover, the structural analyses revealed that hydrophilic colloids have no impact on the functional group and crystal structure of the LRS. However, complex system exhibited the more stable hydrogen bonding. The addition of 1.5 % XG exhibited the most stable hydrogen bonding and highest water binding affinity. Overall, the results demonstrated the effect of different hydrophilic colloids on LRS, offering a theoretical basis for LRS applications and novel insights for the use of starches and hydrocolloids.


Assuntos
Coloides , Amido , Amido/química , Coloides/química , Géis/química , Polissacarídeos Bacterianos/química , Goma Arábica/química , Viscosidade , Reologia
4.
Ultrason Sonochem ; 101: 106646, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37862945

RESUMO

The increasing focus on health and well-being has sparked a rising interest in bioactive components in the food, pharmaceutical, and nutraceutical industries. These components are gaining popularity due to their potential benefits for overall health. The growing interest has resulted in a continuous rise in demand for bioactive components, leading to the exploration of both edible and non-edible sources to obtain these valuable substances. Traditional extraction methods like solvent extraction, distillation, and pressing have certain drawbacks, including lower extraction efficiency, reduced yield, and the use of significant amounts of solvents or resources. Furthermore, certain extraction methods necessitate high temperatures, which can adversely affect certain bioactive components. Consequently, researchers are exploring non-thermal technologies to develop environmentally friendly and efficient extraction methods. Ultrasonic-assisted extraction (UAE) is recognized as an environmentally friendly and highly efficient extraction technology. The UAE has the potential to minimize or eliminate the need for organic solvents, thereby reducing its impact on the environment. Additionally, UAE has been found to significantly enhance the production of target bioactive components, making it an attractive method in the industry. The emergence of ultrasonic assisted extraction equipment (UAEE) has presented novel opportunities for research in chemistry, biology, pharmaceuticals, food, and other related fields. However, there is still a need for further investigation into the main components and working modes of UAEE, as current understanding in this area remains limited. Therefore, additional research and exploration are necessary to enhance our knowledge and optimize the application of UAEE. The core aim of this review is to gain a comprehensive understanding of the principles, benefits and impact on bioactive components of UAE, explore the different types of equipment used in this technique, examine the various working modes and control parameters employed in UAE, and provide a detailed overview of the blending of UAE with other emerging extraction technologies. In conclusion, the future development of UAEE is envisioned to focus on achieving increased efficiency, reduced costs, enhanced safety, and improved reliability. These key areas of advancement aim to optimize the performance and practicality of UAEE, making it a more efficient, cost-effective, and reliable extraction technology.


Assuntos
Suplementos Nutricionais , Ultrassom , Reprodutibilidade dos Testes , Solventes/química , Tecnologia
5.
RSC Adv ; 13(40): 28112-28119, 2023 Sep 18.
Artigo em Inglês | MEDLINE | ID: mdl-37746340

RESUMO

Pigmented rodent tooth enamel is mainly composed of parallel hydroxyapatite nanorods and a small amount of organic matrix. These hydroxyapatite nanorods tend to be carbonated and contain traces of iron, fluorine, and magnesium. The pigmented rodent tooth enamel which contains trace iron is stronger and more resistant to acid corrosion than unpigmented rodent enamel, which could provide inspiration for the preparation and synthesis of high performance and corrosion resistant artificial materials. However, the regulatory role and mechanical enhancement of iron ions in enamel growth are unclear. Here, we synthesized enamel-like fluorapatite nanorod arrays in vitro using a mineralization technique at room-temperature. To investigate the regulatory effect of iron ions on the fluorapatite nanorod arrays (FAP-Fe), the phosphate solution is slowly transfused dropwise in the calcium ion solution, and different concentrations of iron ions are added to the calcium ion solution in advance. We demonstrated that fluorapatite nanorod arrays (FAP) can be epitaxially grown from amorphous calcium phosphate nanoparticles and iron ions can improve the microstructure of FAP nanorod arrays and obtain the same enamel bundle structure as the natural enamel. Moreover, high concentration of iron ions can inhibit the crystallization of fluorapatite. The FAP-Fe nanorod arrays controlled by 0.02 mM Fe3+ have good mechanical properties. Their hardness is 1.34 ± 0.02 GPa and Young's modulus is 65.3 ± 0.4 GPa, respectively. This work is helpful to understand the role of trace elements in natural enamel in the regulation of enamel formation and to provide a theoretical foundation for the preparation of high strength artificial composites, which can play a greater role in the fields of biological alternative materials, anti-oil coating, oil/water separation, anti-bioadhesion and so on.

6.
Food Chem X ; 18: 100698, 2023 Jun 30.
Artigo em Inglês | MEDLINE | ID: mdl-37397220

RESUMO

Protein-based nanoparticles or nanocarriers of emulsion systems have piqued the interest of nutrition and health care goods. As a result, this work examines the characterisation of ethanol-induced soybean lipophilic protein (LP) self-assembly for resveratrol (Res) encapsulation, particularly the influence on emulsification. By varying the ethanol content ([E]) in the range of 0-70% (v/v), the structure, size, and morphology of LP nanoparticles may be adjusted. Similarly, the self-assembled LPs have a strong [E] dependency on the encapsulation efficiency of Res. For [E] = 40% (v/v), Res had the highest encapsulation efficiency (EE) and load capacity (LC) of 97.1% and 141.0 µg/mg nanoparticles, respectively. Most of the Res was encapsulated by the hydrophobic core of LP. Moreover, for [E] = 40% (v/v), LP-Res showed significantly improved emulsifying properties, independent of low-oil or high-oil emulsion systems. Furthermore, the ethanol-induced production of appropriate aggregates increased emulsion system stability, hence increasing Res retention during storage.

7.
Ultrason Sonochem ; 96: 106436, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-37172539

RESUMO

In this study, an ultrasonic-assisted alkaline method was used to remove proteins from wastewater generated during oil-body extraction, and the effects of different ultrasonic power settings (0, 150, 300, and 450 W) on protein recovery were investigated. The recoveries of the ultrasonically treated samples were higher than those of the samples without ultrasonic treatment, and the protein recoveries increased with increasing power, with a protein recovery of 50.10 % ± 0.19 % when the ultrasonic power was 450 W. Amino acid analysis showed that the amino acids comprising the recovered samples were consistent, regardless of the ultrasonic power used, but significant differences in the contents of amino acids were observed. No significant changes were observed in the protein electrophoretic profile using dodecyl polyacrylamide gel, indicating that sonication did not change the primary structures of the recovered samples. Fourier transform infrared and fluorescence spectroscopy revealed that the molecular structures of the samples changed after sonication, and the fluorescence intensity increased gradually with increasing sonication power. The contents of α-helices and random coils obtained at an ultrasonic power of 450 W decreased to 13.44 % and 14.31 %, respectively, whereas the ß-sheet content generally increased. The denaturation temperatures of the proteins were determined using differential scanning calorimetry, and ultrasound treatment reduced the denaturation temperatures of the samples, which was associated with the structural and conformational changes caused by their chemical bonding. The solubility of the recovered protein increased with increasing ultrasound power, and a high solubility was essential in good emulsification. The emulsification of the samples was improved well. In conclusion, ultrasound treatment changed the structure and thus improved the functional properties of the protein.


Assuntos
Gotículas Lipídicas , Águas Residuárias , Proteínas , Solubilidade , Aminoácidos
8.
Intensive Crit Care Nurs ; 76: 103378, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-36805167

RESUMO

OBJECTIVE: To review and evaluate existing risk assessment tools for intensive care unitreadmission. METHODS: Nine electronic databases (Medline, CINAHL, Web of Science, Cochrane Library, Embase, Sino Med, CNKI, VIP, and Wan fang) were systematically searched from their inception to September 2022. Two authors independently extracted data from the literature included. Meta-analysis was performed under the bivariate modeling and summary receiver operating characteristic curve method. RESULTS: A total of 29 studies were included in this review, among which 11 were quantitatively Meta-analyzed. The results showed Stability and Workload Index for Transfer: Sensitivity = 0.55, Specificity = 0.65, Area under curve = 0.63. And Early warning score: Sensitivity = 0.78, Specificity = 0.83, Area under curve = 0.88. The remaining tools included scores, nomograms, machine learning models, and deep learning models. These studies, with varying reports on thresholds, case selection, data preprocessing, and model performance, have a high risk of bias. CONCLUSION: We cannot identify a tool that can be used directly in intensive care unit readmission risk assessment. Scores based on early warning score are moderately accurate in predicting readmission, but there is heterogeneity and publication bias that requires model adjustment for local factors such as resources, demographics, and case mix. Machine learning models present a promising modeling technique but have a high methodological bias and require further validation. IMPLICATIONS FOR CLINICAL PRACTICE: Using reliable risk assessment tools is essential for the early identification of unplanned intensive care unit readmission risk in critically ill patients.  A reliable risk assessment tool must be developed, which is the focus of further research.


Assuntos
Unidades de Terapia Intensiva , Readmissão do Paciente , Humanos , Cuidados Críticos , Curva ROC , Medição de Risco/métodos
9.
Food Chem ; 399: 133964, 2023 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-36029675

RESUMO

We employed dithiothreitol (DTT) to reassemble soy lipophilic protein (LP) and increased its solubility for encapsulating resveratrol (Res); we subsequently added hydroxypropyl methylcellulose (HPMC) to further stabilize Res. Physicochemical characterization, sodium dodecyl sulfate-polyacrylamide gel electrophoresis, and spectral analysis revealed that DTT triggered the breakage and reassembly of the disulfide bond. Consequently, the solubility of LP increased from 38.64 % to 71.49 %, and the number of free sulfhydryl groups increased to 7.84 mol·g-1. Furthermore, the encapsulation efficiency and structure of reassembled LP nanoparticles loaded with Res were found to be closely related to the DTT concentration used for induction. When HPMC was added, the LP-Res complex demonstrated spontaneous self-assembly, and the pH and temperature stability of the Res in the nanoparticles improved. An in vitro digestion simulation revealed that the reassembled LP was an efficient carrier for Res delivery. Particularly, HPMC improved the bioavailability and sustained release of Res.


Assuntos
Ditiotreitol , Derivados da Hipromelose , Nanopartículas , Resveratrol , Proteínas de Soja , Derivados da Hipromelose/química , Nanopartículas/química , Solubilidade , Proteínas de Soja/química
10.
Food Chem X ; 16: 100509, 2022 Dec 30.
Artigo em Inglês | MEDLINE | ID: mdl-36519106

RESUMO

The purpose of this study is to investigate the impact of varied oil body (OB) concentrations and interfacial compositions on the network topology and rheological and functional aspects of composite whey protein isolate (WPI) gels. Particle size and ζ-potential analyzes of the mixed gel solutions containing the OBs extracted at pH 6.8 (6.8-OB) and 11.0 (11.0-OB) revealed a greater aggregation in the 6.8-OB-containing mixed gel solution. 6.8-OB and 11.0-OB generated particle aggregates and oil-drop-embedded network architectures in the WPI gel, respectively. FT-IR analyses showed that OBs stabilized the protein gels' polymeric matrix by hydrogen bonding, steric hindrance, and hydrophobic interactions. Rheology and texture showed that OBs hardened gels. Low-field nuclear magnetic resonance showed that excessive inclusion of OBs (30% of 6.8-OB and 35% of 11.0-OB) compromised gel integrity and freeze-thaw stability. This study found that OBs can be active fillers in protein gels for functional meals.

11.
Food Chem ; 394: 133514, 2022 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-35728470

RESUMO

This study evaluates the effect of pH (pH 3 and 11) and heat treatment (60 °C) in modifying the soybean lipophilic protein (LP) for the development of an encapsulation system to co-deliver resveratrol (Res) and vitamin D3. The structural and functional properties of LP after the modification will change to varying degrees. Meanwhile, Res was loaded into the hydrophobic core of LP, and the resulting Res-loaded structures have a uniform particle size distribution and a high encapsulation efficiency (78%). When the amount of Res encapsulation increases, the emulsification and oxidation resistance of the Pickering emulsion increased; the interfacial tension and interfacial protein adsorption increased to 11.21 mN/m and 97.34%, respectively. During simulated gastrointestinal digestion, the Pickering emulsion prepared with LP-Res nanoparticles at pH 11, 60 °C (pH 11, 60 °C-LP-Res) effectively protected Res and vitamin D3 from degradation or precipitation, indicating a significant increase in bioavailability.


Assuntos
Nanopartículas , Proteínas de Soja , Colecalciferol , Digestão , Emulsões/química , Temperatura Alta , Concentração de Íons de Hidrogênio , Nanopartículas/química , Tamanho da Partícula , Resveratrol/química , Proteínas de Soja/química
12.
J Sci Food Agric ; 102(13): 6146-6155, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-35478100

RESUMO

BACKGROUND: Owing to the harsh acidic environment of the stomach, acid-resistant emulsion products have wide-ranging applications in the food industry. Herein, natural soybean lipophilic protein (LP) was used to establish coarse emulsions, nanoemulsions, emulsion gels, and high internal phase Pickering emulsions (HIPPE) under acidic conditions. Furthermore, the carrying characteristics of the acid-resistant emulsion system with lycopene were explored. RESULTS: Comparisons of particle sizes, potentials, microstructures, and rheology of the four carrier systems revealed that HIPPE has a single particle-size distribution, the largest zeta potential, and an elastic gel-like network structure. Comparison of encapsulation rates indicated that HIPPE had the best effect on encapsulating lycopene, reaching approximately 90%. The pH stability, storage stability, and simulated in vitro digestion experiments showed that the four emulsions that were stable under acidic conditions had good acid resistance. Among them, the acid-induced LP-stabilized HIPPE had the best storage stability and superior compatibility with the harsh acidic environment of the stomach, which not only achieved the purpose of delaying the release of lipids but also conferred better protection to lycopene in the gastric tract; moreover, it achieved the best bioavailability. CONCLUSION: LP-stabilized HIPPE has the best stability and can yield better absorption and utilization of lycopene by the body. The results of this study are helpful for the development of acid-resistant functional emulsion foods that are conducive to the absorption of lycopene. © 2022 Society of Chemical Industry.


Assuntos
Proteínas de Soja , Emulsões/química , Licopeno/química , Tamanho da Partícula , /metabolismo
13.
Food Chem ; 380: 132212, 2022 Jun 30.
Artigo em Inglês | MEDLINE | ID: mdl-35139479

RESUMO

We present the preparation and physicochemical properties of thermally induced emulsion gels of a soy protein isolate-whey protein isolate (SPI-WPI)/calcium chloride composite, and the analysis of their nutrient release behaviors using fat-soluble vitamin E as a model system by simulating its digestion in vitro. In general, the SPI-WPI composite emulsion gel was found to have better water-holding capacity and texture than the emulsion gels formed by the single protein. The microstructure and rheological properties of the gel suggested that the CaCl2 concentration significantly influences the fundamental structure and mechanical properties of the SPI-WPI gel. The in vitro digestion experiments revealed that the mixed protein emulsion gel improves the bioavailability of vitamin E. This study is of great significance in the utilization of these natural emulsifiers, as they can be used in the development of emulsion delivery systems for lipophilic nutrients and other health products.


Assuntos
Proteínas de Soja , Cloreto de Cálcio , Emulsões , Géis , Reologia , Proteínas do Soro do Leite
14.
J Agric Food Chem ; 70(5): 1640-1651, 2022 Feb 09.
Artigo em Inglês | MEDLINE | ID: mdl-35023729

RESUMO

The development of protein-based nanocarriers to improve the water solubility, stability, and bioavailability of hydrophobic or poorly soluble bioactive molecules has attracted increasing interest in the food and pharmaceutical industries. In this study, a network-like nanostructure of soybean lipophilic protein (LP) was obtained through sodium dodecyl sulfate (SDS)-dependent decomposition and recombination. This nanostructure served as an excellent nanocarrier for resveratrol (Res), a poorly soluble biologically active molecule. The structure of LP gradually decomposed into its independent subunits at SDS concentrations ≤5% (w/v). After the removal of SDS, the dissociated subunits partially reassembled into a fibrous network-like nanostructure in which the Res molecules were encapsulated, and they preferentially interacted with the hydrophobic subunits (α and α' subunits and the 24 kDa subunit) of the protein. This system exhibited a high encapsulation efficiency (95.93%), high water solubility (85.29%), extraordinary oxidation resistance (DPPH radical scavenging activity of 67.1%), and improved Res digestibility (78.7%).


Assuntos
Nanopartículas , Proteínas de Soja , Resveratrol , Dodecilsulfato de Sódio , Solubilidade
15.
Food Chem ; 372: 131238, 2022 Mar 15.
Artigo em Inglês | MEDLINE | ID: mdl-34624785

RESUMO

2We propose a new ultrasound-assisted salt (NaCl) Oleosin extraction method, where the addition of NaCl induces the dissociation of Oleosin subunits and promotes the unfolding of the protein spatial structure. The yield of Oleosin post extraction and purification and solubility of Oleosin obtained using the proposed method were higher than those of Oleosin extracted using traditional methods, by 17.6% and 122.9%, respectively; reduction in particle size (to 52 nm) was also noted. Hydrogen bond dissociation, increase in surface hydrophobicity, and disulfide bond formation occurred simultaneously. However, the overall structure of Oleosin was not negatively affected. The physical properties of Oleosin, such as water and oil absorption, emulsification, and antioxidant activity, were improved, and the rate of Oleosin digestion decreased during the in vitro simulated digestion process. The proposed method provides a theoretical basis for producing proteins. This method can be utilized for effective extraction of Oleosin to achieve sustained release of the produced proteins.


Assuntos
Proteínas de Plantas , Cloreto de Sódio , Tamanho da Partícula , Solubilidade
16.
Food Res Int ; 149: 110666, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34600668

RESUMO

The emulsification of vegetable protein is closely related to solubility. The purpose of this study was to evaluate the effect of ultrasound on protein emulsification and to provide a prospective method for assessing the digestive properties of emulsions. In this article, we investigate the emulsion stability of ultrasonic pretreated soy protein isolate (SPI), and its three storage proteins, namely ß-conglycinin (7S), lipophilic protein (LP), and glycinin (11S), under dynamic gastric conditions. The effects of these emulsions on lipolysis during digestion in the small intestine are also assessed using an in vitro dynamic human stomach simulator and a small intestine model. Particle size and ζ-potential measurements, as well as confocal laser scanning microscopy, revealed that during dynamic gastric digestion, the flocculation degree and floc size of 7S and soybean LP emulsions are larger than that of 11S and SPI emulsions. Meanwhile, ultrasound pretreatment of the proteins was found to prevent the agglomeration of the emulsion in a dynamic gastric environment. Moreover, enhanced flocculation delayed oil droplet delivery to the small intestine and subsequently retarded the release of lipophilic nutrients. The droplet size, molecular weight, and protein secondary structures of the ultrasonicated proteins were conducive to relatively higher rates and degrees of lipolysis in intestinal digestion than those of unsonicated proteins. Additionally, the slow-release effect of LP was superior to that of 11S and SPI, whereas 7S was comparatively more difficult to digest. The present study elucidated the fate of soy protein in the digestive tract and may facilitate microstructural food design to regulate physiological responses during digestion.


Assuntos
Proteínas de Soja , Ultrassom , Digestão , Emulsões , Humanos , Lipídeos , Estômago/diagnóstico por imagem
17.
Food Chem ; 341(Pt 2): 128272, 2021 Mar 30.
Artigo em Inglês | MEDLINE | ID: mdl-33031958

RESUMO

The purpose of this study was to enhance the stability and functional properties of artificial oil body (AOB) emulsions. Herein, we covalently conjugated oleosin (OL) and epigallocatechin-3-gallate (EGCG) under alkaline conditions to obtain OL-EGCG conjugates. The results revealed that the structural characteristics of OL are improved by covalent binding to EGCG, with the OL-EGCG yield maximized at an EGCG concentration of 150 µM. We prepared AOB emulsions using native OL, the OL-EGCG conjugates, phosphatidylcholine (PC), and soybean oil for embedding curcumin. The results show that the protein components and phospholipids are bound in the AOB emulsion by hydrogen bonding and hydrophobic interactions. The covalent OL-EGCG/PC-stabilized emulsions exhibited more uniform droplet distributions, stronger thermal stabilities, and higher curcumin retentions than the other samples. These results indicated that the OL-EGCG/PC complexes are potential stabilizers for AOB emulsions and provided fresh insight into preparing highly stable emulsion embedding systems with good encapsulation efficiencies.


Assuntos
Catequina/análogos & derivados , Emulsões/química , Proteínas de Plantas/química , Catequina/química , Interações Hidrofóbicas e Hidrofílicas , Gotículas Lipídicas/química , Estrutura Molecular
18.
Food Funct ; 11(5): 3800-3810, 2020 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-32338668

RESUMO

Natural emulsifiers such as soybean lipophilic protein (SLP) show potential as delivery systems for hydrophobic bioactive components such as vitamin E; however, the solubility of SLP is limited by its high lipid content. This study evaluated the effects of various ultrasonic conditions on the structure and properties of SLP. Using an emulsion of modified SLP, the carrier properties and in vitro digestion and release properties for vitamin E were evaluated. Biochemical and spectroscopic analyses indicated that the ultrasonic treatment mainly changed the secondary and tertiary structures of SLP. Furthermore, appropriate ultrasonic conditions significantly improved the solubility and emulsifying properties of SLP, with the highest emulsion stability and SLP encapsulation efficiency obtained using an ultrasonic power of 240 W for 20 min. An in vitro digestion simulation revealed that the emulsion prepared by ultrasonic modification of SLP was an effective delivery system for vitamin E. In particular, the emulsion protected the biological activity of vitamin E while significantly increasing the rate of lipid digestion and the bioavailability of vitamin E. These results indicate that the ultrasonically modified SLP can be used to prepare a stable emulsion for encapsulating vitamin E, which provides a new approach for the delivery of hydrophobic bioactive components.


Assuntos
Manipulação de Alimentos/métodos , Proteínas de Soja/química , Ultrassom , Emulsões , Humanos
19.
Sci Rep ; 10(1): 4222, 2020 03 06.
Artigo em Inglês | MEDLINE | ID: mdl-32144389

RESUMO

Enzyme-assisted aqueous extraction residue (REAE) has a lower utilization rate as it is the "waste" produced after the enzyme-assisted aqueous extraction (EAE), but its nutritional value is high. To improve the development and utilization of REAE, in this study, cookies were made by adding REAE (0%, 10%, 20%, 30%, 40%, 50%) as a food additive to a small amount of flour. The AOAC method was used to identify the basic components of REAE, analyze its physical and chemical properties, and characterize the cookie structure change in terms of texture, disulfide bond, and thiol content. An in vitro simulation system and sensory evaluation mechanism were established to analyze the bioavailability and impact of quality. The results show that REAE is a potential food additive. With an increase in the REAE content, the cookies become lighter in color, the sweetness and fat content are reduced, the hardness is increased, and the digestibility and glycerin index are reduced. The change in texture is caused by the reduction of disulfide bonds in the dough. The cookies were 'well accepted' with up to 30% REAE. Therefore, the use of the appropriate amount of REAE as a new food additive will reduce the amount of starch added.


Assuntos
Fibras na Dieta/análise , Análise de Alimentos/métodos , Peptídeo Hidrolases/metabolismo , Extratos Vegetais/metabolismo , Sensação , Amido/química , Adulto , Cor , Digestão , Manipulação de Alimentos , Dureza , Humanos , Pessoa de Meia-Idade , Propriedades de Superfície , Paladar , Adulto Jovem
20.
Mol Cancer Ther ; 19(1): 75-88, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-31554654

RESUMO

Reactivation of androgen receptor (AR) appears to be the major mechanism driving the resistance of castration-resistant prostate cancer (CRPC) to second-generation antiandrogens and involves AR overexpression, AR mutation, and/or expression of AR splice variants lacking ligand-binding domain. There is a need for novel small molecules targeting AR, particularly those also targeting AR splice variants such as ARv7. A high-throughput/high-content screen was previously reported that led to the discovery of a novel lead compound, 2-(((3,5-dimethylisoxazol-4-yl)methyl)thio)-1-(4-(2,3-dimethylphenyl)piperazin-1-yl)ethan-1-one (IMTPPE), capable of inhibiting nuclear AR level and activity in CRPC cells, including those resistant to enzalutamide. A novel analogue of IMTPPE, JJ-450, has been investigated with evidence for its direct and specific inhibition of AR transcriptional activity via a pulldown assay and RNA-sequencing analysis, PSA-based luciferase, qPCR, and chromatin immunoprecipitation assays, and xenograft tumor model 22Rv1. JJ-450 blocks AR recruitment to androgen-responsive elements and suppresses AR target gene expression. JJ-450 also inhibits ARv7 transcriptional activity and its target gene expression. Importantly, JJ-450 suppresses the growth of CRPC tumor xenografts, including ARv7-expressing 22Rv1. Collectively, these findings suggest JJ-450 represents a new class of AR antagonists with therapeutic potential for CRPC, including those resistant to enzalutamide.


Assuntos
Neoplasias de Próstata Resistentes à Castração/genética , Isoformas de Proteínas/genética , Splicing de RNA/genética , Receptores Androgênicos/genética , Humanos , Masculino , Neoplasias de Próstata Resistentes à Castração/patologia , Transfecção
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