ID30960879
Published Date2018-08-28
JournalPolymers, 2018-08-28, Volume 10 Find other publications in this journal
Author Info
  • Division of Food Science and Technology, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand. suriyatem.k@gmail.com.
  • School of Packaging, Michigan State University, East Lansing, MI 48824, USA. aurasraf@msu.edu.
  • Department of Food Science and Technology, Faculty of Agro-Industry, Kasetsart University, Bangkok 10900, Thailand. chitsiri.t@ku.ac.th.
  • Division of Packaging Technology, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand. pornchai.r@cmu.ac.th.

Abstract

Active films from rice starch/carboxymethyl chitosan (RS/CMCh) incorporated with propolis extract (ppl) were developed and characterized. The effect of the ppl content (0⁻10% w/w based on RS/CMCh) on the developed films' properties were determined by measuring the optical, mechanical, thermal, swelling, barrier, antimicrobial, and antioxidant attributes. The thermal stability and biodegradability of the films were also investigated. As the ppl content increased, free radical scavenging and * and * color values increased, whereas luminosity (*) and swellability of the films decreased. The active films with 5⁻10% ppl possessed antimicrobial ability against Gram-positive bacteria ( and ). The active film with 10% ppl displayed increased flexibility and thermal stability, without a change in oxygen permeability. The results indicated that incorporation of ppl into RS/CMCh film could enhance the films' antioxidant and antimicrobial properties.