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Chitosan packaging has been widely studied for food preservation, the application of which is expanded by the incorporation of tea polyphenols. This paper reviews the influence of tea polyphenols incorporation on chitosan-based packaging from the perspectives of physicochemical properties, bioactivity used for food preservation, and nutritional value. The physicochemical properties included optical properties, mechanical properties, water solubility, moisture content, and water vapor barrier property, concluding that the addition of tea polyphenols improved the opacity, water solubility, and water vapor barrier property of chitosan packaging, and the mechanical properties and water content were decreased. The bioactivity used for food preservation, that is antioxidant and antimicrobial properties, is enhanced by tea polyphenols, improving the preservation of food like meat, fruits, and vegetables. In the future, efforts will be needed to improve the mechanical properties of composite film and adjust the formula of tea polyphenols/chitosan composite film to apply to different foods. Besides, the identification and development of high nutritional value tea polyphenol/chitosan composite film is a valuable but challenging task. This review is expected to scientifically guide the application of tea polyphenols in chitosan packaging.
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http://dx.doi.org/10.1016/j.ijbiomac.2024.129267 | DOI Listing |
Anal Chem
September 2025
Anhui Key Laboratory of Biomedical Materials and Chemical Measurement, Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, P.R. China.
Current colorimetric sensing arrays for antioxidant detection often struggle with discrimination due to cross-reactive signals from individual nanozymes. These signals are typically modulated by external factors such as pH or chromogenic substrates, offering limited kinetic and mechanistic diversity. To overcome this, we present a novel triple-channel colorimetric sensing array utilizing two distinct single-atom nanozymes (Cu SA and Fe SA) and one dual-atom nanozyme (CuFe DA).
View Article and Find Full Text PDFJ Texture Stud
October 2025
College of Automation Engineering, Northeast Electric Power University, Jilin, China.
Astringency is a complex oral sensation characterized by dryness and constriction in the mouth. It is typically induced by polyphenol-rich foods and beverages such as wine and tea. The quantitative assessment of astringency intensity has become a prominent research focus in the food science field.
View Article and Find Full Text PDFJ Agric Food Chem
September 2025
National Key Laboratory for Tea Plant Germplasm Innovation and Resource Utilization, Anhui Agricultural University, Hefei 230036, China.
Tea is one of the most widely consumed beverages globally, whereas tea polyphenols are always receiving the most attention in scientific research. In past decades, the polyphenols, their derivatives, and oligomers and polymers which possess potential antioxidant, anticancer, and hypolipidemic effects were separated and identified. However, after reviewing previous study in tea polyphenols, it was found that some thorny problems have been left unsolved although a series of conventional methods, such as chromatography, mass spectrometry, and nuclear magnetic resonance, have already been widely applied; meanwhile, a variety of novel analytical methods and theories are booming.
View Article and Find Full Text PDFFood Chem
August 2025
National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops; College of Horticulture and Forestry of Huazhong Agricultural University, Wuhan 430064, China. Electronic address:
Qingzhuan tea (QZT) acquires distinctive sensory and functional properties, but the quality evolution during lengthy industrial processing remains unclear. Therefore, this study deciphers the flavor evolution mechanisms by analyzing non-volatile dynamics from fresh leaves to finished tea. A total of 821 metabolites were identified, with 136 differential metabolites mainly comprising lipid degradation and flavonoids polymerization potentially driving the formation of flavor.
View Article and Find Full Text PDFClin Nutr
August 2025
The Health & Nutrition Innovative International Research Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, David Ben-Gurion Blvd. 1, Beer-Sheva, 8410501, Israel; Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG), Helmholtz Zentrum München, University of
Background And Aims: We explored whether changes in serum proteomic profiles differed between participants with distinct brain aging trajectories, and whether these changes were influenced by dietary intervention.
Methods: In this secondary analysis of the 18-month DIRECT PLUS trial, 294 participants were randomized to one of three arms: 1) Healthy dietary guidelines (HDG); 2) Mediterranean (MED) diet (+440 mg/day polyphenols from walnuts); or 3) low red/processed meat green-MED diet (+1240 mg/day polyphenols from walnuts, Mankai plant, and green tea). We measured 87 serum proteins (Olink-CVDII).