期刊
LWT-FOOD SCIENCE AND TECHNOLOGY
卷 166, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.lwt.2022.113780
关键词
Konjac glucomannan; Chitosan; Citric acid; Antioxidant of bamboo leaves
资金
- National Natural Science Foundation of China [21505013]
- Natural Science Founda- tion of Liaoning Province [2019010274-JH3/301]
In this study, a novel functional food packaging material was developed by microwave modification of a composite film made of konjac glucomannan (KGM)/ chitosan (CTS)/citric acid with the addition of bamboo leaf antioxidant (AOB). The results showed that the addition of AOB improved the antioxidant activity, UV-Vis resistance, and mechanical properties of the material.
The health hazards associated with the use of plastic films to preserve food require the development of active films from non-toxic and antioxidant rich biological sources. In this study, a novel functional food packaging material was developed by microwave modification of a composite film made of konjac glucomannan (KGM)/ chitosan (CTS)/citric acid with the addition of the antioxidant of bamboo leaves (AOB). The effects of different contents of the AOB (0.1%, 0.2%, 0.3% and 0.4%, w/v) on the structure, physical properties and antioxidant activity of KGM/CTS/citric acid films were systematically studied. The results from Fourier transform infrared spectroscopy and atomic force microscopy showed that the components in the KGM/CTS/citric acid film had good compatibility due to the hydrogen bonds among them and furthermore the AOB was evenly distributed in the composite film. The addition of AOB significantly improved the oxidation resistance, anti UV-Vis and me-chanical properties of the materials. Moreover, when the AOB content was 0.2%, the film had the best barrier property and the maximum elongation at break. Therefore, with all the meaningful improvement, the newly developed KGM/CTS/citric acid biological film might be used as promising food packaging materials in the future.
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