Design and synthesis of functionalized green PVA/starch composite films with bio-char for fresh food protection

IF 1.7 3区农林科学 Q4 FOOD SCIENCE & TECHNOLOGY

Journal of Consumer Protection and Food Safety Pub Date : 2025-05-26 DOI:10.1007/s00003-025-01562-8

Paulami Banerjee, Shivam Saw, Mrinal Kanti Mandal, Rajib Ghosh Chaudhuri

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引用次数: 0

Abstract

Synthetic polymers used in packaging are harmful to human health and the environment. This study presents an eco-friendly polymeric packaging film for the food industry to reduce synthetic film use and enhance food protection. Biodegradable composite films were prepared using a blend of polyvinyl alcohol and starch, incorporating carbon char from waste banana peels and glycerol as a plasticizer. The films' properties were tested, revealing that the 5 wt% carbon film had excellent UV-blocking capabilities, with an improved water contact angle from 35.2° to 55.6°, indicating increased hydrophobicity. The water vapor transmission rate decreased from 71.42 to 45.42 g/m²h because of denser packing, while the moisture retention ability increased from 84.5 to 93.8% because of better hydrogen bonding and hydrophilic interactions. Microbial studies showed a 90.6% degradation with S. aureus in 7 days and 20.7% degradation in soil within 30 days, confirming its biodegradability. Overall, this green composite film is a promising solution for food safety and the reduction of plastic pollution.

Graphical abstract

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生物炭功能化绿色PVA/淀粉复合保鲜膜的设计与合成

包装中使用的合成聚合物对人体健康和环境有害。本研究提出一种环保高分子包装薄膜，用于食品工业，以减少合成薄膜的使用，提高食品的保护。采用聚乙烯醇和淀粉的混合物，将废香蕉皮中的碳炭和甘油作为增塑剂，制备了可生物降解的复合薄膜。对膜的性能进行了测试，结果表明，5 wt%的碳膜具有优异的紫外线阻隔能力，水接触角从35.2°提高到55.6°，表明疏水性增强。水蒸气透过率从71.42 g/m2h降低到45.42 g/m2h，而保湿能力则从84.5 g/m2h提高到93.8%，这是由于填料的致密性和亲水性的增强。微生物研究表明，金黄色葡萄球菌在7天内降解90.6%，在土壤中30天降解20.7%，证实了其生物降解性。总的来说，这种绿色复合薄膜对于食品安全和减少塑料污染是一种很有前途的解决方案。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Consumer Protection and Food Safety Veterinary-Food Animals

CiteScore

3.70

自引率

4.20%

发文量

审稿时长

>12 weeks

期刊介绍： The JCF publishes peer-reviewed original Research Articles and Opinions that are of direct importance to Food and Feed Safety. This includes Food Packaging, Consumer Products as well as Plant Protection Products, Food Microbiology, Veterinary Drugs, Animal Welfare and Genetic Engineering. All peer-reviewed articles that are published should be devoted to improve Consumer Health Protection. Reviews and discussions are welcomed that address legal and/or regulatory decisions with respect to risk assessment and management of Food and Feed Safety issues on a scientific basis. It addresses an international readership of scientists, risk assessors and managers, and other professionals active in the field of Food and Feed Safety and Consumer Health Protection. Manuscripts – preferably written in English but also in German – are published as Research Articles, Reviews, Methods and Short Communications and should cover aspects including, but not limited to: · Factors influencing Food and Feed Safety · Factors influencing Consumer Health Protection · Factors influencing Consumer Behavior · Exposure science related to Risk Assessment and Risk Management · Regulatory aspects related to Food and Feed Safety, Food Packaging, Consumer Products, Plant Protection Products, Food Microbiology, Veterinary Drugs, Animal Welfare and Genetic Engineering · Analytical methods and method validation related to food control and food processing. The JCF also presents important News, as well as Announcements and Reports about administrative surveillance.