Effects of gum karaya addition on the characteristics of loquat seed starch films containing oregano essential oil

Incorporation of yellow onion peel extract into the funoran‐based biodegradable films as an antioxidant packaging material

“…Additionally, the band at 1648 cm −1 representing stretching vibration of O–H from absorbed water in the GFF film shifted to 1647, 1642 and 1635 cm −1 for the GFF films containing 0.3%, 0.5% and 1.0% YOPE, respectively. These changes in the spectra of the GFF films containing YOPE might also be associated with the changes in MC of the films after the addition of YOPE (Cao & Song, ; Kang & Song, ).…”

“…b. For the GFF film without YOPE, the bands observed at 3323, 2940 and 1648 cm −1 are attributed to the stretching vibrations of O–H, C–H and O–H bending of water absorbed in the carbohydrate films, respectively (Chen et al , ; Cao & Song, ; Kang & Song, ). The bands at 1213–830 cm −1 observed in this study were reported as the typical signals for the FTIR spectrum of funoran (Yu et al , ; Tuvikene et al , ).…”

“…Contrastingly, the addition of YOPE to the composite film caused some changes in the FTIR spectra of the GFF film. There was a shift and change in absorbance intensity of the band at 3323 cm −1 , indicating the interactions between phenolic compounds of YOPE and the polysaccharide chains (Cao & Song, ). Additionally, the band at 1648 cm −1 representing stretching vibration of O–H from absorbed water in the GFF film shifted to 1647, 1642 and 1635 cm −1 for the GFF films containing 0.3%, 0.5% and 1.0% YOPE, respectively.…”

“…The GFF film samples were extracted in DW (1%, w/v) in a shaking incubator for 30 min and used for the experiments. The ABTS and DPPH radical scavenging activities were determined following the method described by Cao & Song (). The ABTS reagent (2.94 mL) was allowed to react with the GFF film extract (60 µL), and the absorbance at 734 nm was measured after 10 min.…”

Effects of ultraviolet‐C irradiation on the physicochemical properties of polysaccharide films prepared from the stalk base of oyster mushrooms (Pleurotus ostreatus)

“…Disc diffusion tests were used to investigate the antimicrobial properties of the films. Listeria monocytogenes strains (ATCC 19111 and ATCC 19115) were individually cultured in brain heart infusion medium at 37 °C for 19 h, and a cocktail of the two strains was plated on Mueller–Hinton agar (Cao & Song, 2019). A portion of the film (diameter, 8 mm) was placed on the streaked plate and cultured at 37 °C for 24 h. Inhibition zones were determined in mm using a Digimatic caliper (Mitutoyo Co., Kawasaki, Japan).…”