4.7 Article

Effects of Polygonatum cyrtonema extracts on the antioxidant ability, physical and structure properties of carboxymethyl cellulose-xanthan gum-flaxseed gum active packaging films

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FOOD CHEMISTRY
卷 403, 期 -, 页码 -

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ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2022.134320

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Polygonatum cyrtonema; Carboxymethyl cellulose; Xanthan gum; Flaxseed gum; Film; Food packaging

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A novel film composed of Polygonatum cyrtonema extracts, xanthan gum, flaxseed gum and carboxymethyl cellulose has been prepared. The addition of Polygonatum cyrtonema extracts improves the UV blocking performance, antioxidant activity, tensile strength and elongation at break of the film. Structural analysis indicates hydrogen-bonding interaction between the components. The film with Polygonatum cyrtonema extracts can prolong the shelf life of mango and improve its overall quality.
A novel film composed of Polygonatum cyrtonema extracts (PCE), xanthan gum (XG), flaxseed gum (FG) and carboxymethyl cellulose (CMC) was prepared (XFCP). Addition of PCE has decreased the light transmittance, while enhanced the UV blocking performance, antioxidant activity, tensile strength and elongation at break of XFCP due to polysaccharides, polyphenols, and flavonoid in PCE. Structural analyses by FTIR and XRD indicated the hydrogen-bonding interaction between PCE, XG, FG and CMC. It was found that compared with the control sample, XFCP2.5% with the lowest WVTR was able to prolong the shelf life of mango. The overall quality of mango was also improved in terms of lower decay rate, weight loss rate, total soluble solid, and polyphenol oxidase, higher titratable acidity, Vc, and superoxide dismutase than control mango upon 8 days of storage. This effectively expanded the application of PCE into food packaging in addition to merely as Chinese traditional medicine herbs.

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