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  • Title: Self-assembling crystals of an extract of Flos Sophorae Immaturus for improving the antioxidant, mechanical and barrier properties of a cassia gum film.
    Author: Meng F, Zhang C, Li J, Wang L.
    Journal: Int J Biol Macromol; 2021 Jan 15; 167():1281-1289. PubMed ID: 33217460.
    Abstract:
    A novel antioxidative film was prepared by drying a film-forming solution containing the Flos Sophorae Immaturus extract (FSIE) (0-3.5%) and cassia gum (CG). Scanning electron microscopy (SEM) showed that FSIE was successfully compounded with CG. Although the addition of FSIE slightly increased the water vapor permeability (WVP) and O2 permeability (OP) of the film, it also improved its ability to block ultraviolet light significantly. The appropriate amounts of FSIE increased the tensile strength (TS) from 20.9 MPa to 30.2 MPa but reduced the elongation at break (EB) from 38.7% to 27.6%. The films doped with FSIE exhibited strong antioxidative activity and high rates of free radical scavenging. Total phenols exhibited a positive trend as the amount of FSIE increased in 50% of ethanol. The practical application of these composite films was investigated by evaluating the quality of lard wrapped in the films. After 25 d, the acid value (XAV) and peroxide value (POV) of lard packaged in CG/FSIE2% were lower than the values for lard packaged in CG/FSIE0% and plastic bag. These results showed that the CG/FSIE film had superior antioxidative activity compared to films made from plastic and pure CG.
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