Ecofriendly Active Poly(vinyl alcohol)/Agarose/D-glucose/Piper Betle Linn. Leaf Extract Films as Potential Packaging Materials

Authors
Thuong Thi NguyenSang Hoon KimBui, Quynh Thi PhuongHa Thuc, C. N.
Issue Date
2022-08
Publisher
WILEY-V C H VERLAG GMBH
Citation
Chemistryselect, v.7, no.31
Abstract
The present study aimed at developing ecofriendly active films from poly(vinyl alcohol) (PVA), agarose, D-glucose and Piper betle Linn. leaf extract (PBLLE) using a solution casting method. Agarose, D-glucose and PBLLE have been found to exhibit excellent compatibility with the PVA-matrix and thus support desired changes in the film characteristics. The co-addition of agarose and D-glucose to PVA gave rise to water-resistance as well as flexibility of the PVA-based films. The incorporation of PBLLE imparted active functions to the PVA/agarose/D-glucose film, such as the ability to scavenge DPPH radicals and strong antibacterial activity against both Gram-negative and Gram-positive bacteria. Moreover, significant improvement in both mechanical strength and flexibility of the PVA/agarose/D-glucose films was obtained upon the addition of a sufficient amount of PBLLE. A PBLLE/PVA ratio of 1.5 was found to promote a more than 1.5-fold increase of the elongation at break. Increasing PBLLE content in the films enhanced the UV absorption in the 300-450 nm range. Characterization results show that the PVA/agarose/D-glucose/PBLLE films possess interesting properties for UV-protective and active packaging applications.
Keywords
POLYVINYL-ALCOHOL; MECHANICAL-PROPERTIES; PHYSICAL-PROPERTIES; PIPER-BETLE; NANOCOMPOSITE FILMS; BARRIER PROPERTIES; COMPOSITE FILMS; CROSS-LINKING; STARCH-PVA; SHELF-LIFE; Antioxidant; Antibacterial; Polymer; Poly(vinyl alcohol); Piper betle Linn; leaf extract
URI
https://pubs.kist.re.kr/handle/201004/114799
DOI
10.1002/slct.202200909
Appears in Collections:
KIST Article > 2022
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