Biodegradable and antioxidant films with barrier properties to visible and ultraviolet light using Hass avocado (Persea americana Mill.) by-products

IF 3.5 2区农林科学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Food and Bioproducts Processing Pub Date : 2024-09-08 DOI:10.1016/j.fbp.2024.09.001

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引用次数: 0

Abstract

The search for renewable sources that can be used to develop products as alternatives to traditional polymers in the future, without affecting food safety, represents a challenge for the food industry. In this context, agro-industrial waste has emerged as an interesting alternative. This study evaluated biodegradable films made from Hass avocado seed flour without (Control film; PC) and with antioxidant extracts (PExBIO and PExIND) derived from the epicarp of the same fruit. The results showed that all the films blocked visible (over 96 %) and ultraviolet light (99.9 %), which was mainly attributed to perseorangine, a compound generated by the action of polyphenol-oxidase. The films also exhibited good water vapor barrier properties. PExIND showed the highest mechanical strength (Young's modulus = 901.8 ± 33.4 MPa; tensile strength = 9.1 ± 1.0 MPa; elongation = 3.5 ± 0.5 %), correlating with the highest crystallinity index (14.9 %). The incorporation of extracts increased the content of phenolic compounds and antioxidant capacity in PExBIO and PExIND compared to PC, with no significant differences between them. Moreover, the biodegradation test indicated that the films showed high biodegradability. Therefore, Hass avocado residues could be used to produce biodegradable antioxidant films, suitable for packaging light-sensitive and low-moisture products.

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利用哈斯鳄梨（Persea americana Mill.）副产品制成具有可见光和紫外线阻隔特性的生物降解和抗氧化薄膜

在不影响食品安全的前提下，寻找可用于开发替代传统聚合物产品的可再生资源，是食品工业面临的一项挑战。在这种情况下，农用工业废料成为一种有趣的替代品。这项研究评估了用哈斯鳄梨种子粉制成的可生物降解薄膜（对照薄膜；PC）和从同一水果的外果皮中提取的抗氧化提取物（PExBIO 和 PExIND）。结果表明，所有薄膜都能阻挡可见光（超过 96%）和紫外线（99.9%），这主要归功于多酚氧化酶作用下产生的一种化合物--perseorangine。这些薄膜还具有良好的水蒸气阻隔性能。PExIND 的机械强度最高（杨氏模量 = 901.8 ± 33.4 兆帕；拉伸强度 = 9.1 ± 1.0 兆帕；伸长率 = 3.5 ± 0.5 %），结晶度指数最高（14.9 %）。与 PC 相比，萃取物的加入增加了 PExBIO 和 PExIND 的酚类化合物含量和抗氧化能力，但两者之间没有显著差异。此外，生物降解测试表明，薄膜具有很高的生物降解性。因此，哈斯牛油果残渣可用于生产可生物降解的抗氧化薄膜，适用于包装对光敏感的低水分产品。

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来源期刊

Food and Bioproducts Processing 工程技术-工程：化工

CiteScore

9.70

自引率

4.30%

发文量

115

审稿时长

24 days

期刊介绍： Official Journal of the European Federation of Chemical Engineering: Part C FBP aims to be the principal international journal for publication of high quality, original papers in the branches of engineering and science dedicated to the safe processing of biological products. It is the only journal to exploit the synergy between biotechnology, bioprocessing and food engineering. Papers showing how research results can be used in engineering design, and accounts of experimental or theoretical research work bringing new perspectives to established principles, highlighting unsolved problems or indicating directions for future research, are particularly welcome. Contributions that deal with new developments in equipment or processes and that can be given quantitative expression are encouraged. The journal is especially interested in papers that extend the boundaries of food and bioproducts processing. The journal has a strong emphasis on the interface between engineering and food or bioproducts. Papers that are not likely to be published are those: • Primarily concerned with food formulation • That use experimental design techniques to obtain response surfaces but gain little insight from them • That are empirical and ignore established mechanistic models, e.g., empirical drying curves • That are primarily concerned about sensory evaluation and colour • Concern the extraction, encapsulation and/or antioxidant activity of a specific biological material without providing insight that could be applied to a similar but different material, • Containing only chemical analyses of biological materials.