Experimental study demonstrates antioxidant flaxseed nanofiber composite films delay lipid degradation in preserved nuts, indicating a viable biodegradable alternative to conventional plastic wrap.
As the pace of urban life accelerates, plastic wrap has become an everyday necessity. However, traditional petroleum-based plastic wrap is difficult to degrade and prone to releasing harmful plasticizers. Therefore, developing sustainable, biodegradable, and high-performance alternative materials is crucial. Inspired by the cellulose-gum reinforcement mechanism in flaxseed hulls, this study utilized flaxseed hulls as raw material. Through hot water washing, alkali boiling, and bleaching, high-purity insoluble cellulose (FC) was extracted. Subsequently, flaxseed hull cellulose nanofibers (FCN) were prepared via TEMPO oxidation and ultrasonic treatment. Using FC and FCN, an all-natural cellulose-flaxseed gum composite membrane (CM) was constructed, where FCN serves as the framework and flaxseed gum acts as the binder, forming a dense structure. This composite membrane demonstrated effectiveness in nut preservation, significantly delaying nut oxidation and providing a viable pathway for sustainable food packaging.
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Gan et al. (2026) studied this question.
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