A dual antioxidant and antimicrobial bioplastic film endowed with amine-branched poly(lactic acid): Bioactive packaging for electron beam sterilization and food shelf-life extension.

Autor: Piroonpan T; Center of Radiation Processing for Polymer Modification and Nanotechnology (CRPN), Faculty of Science, Kasetsart University, 50 Ngam Wong Wan Road., Ladyao, Chatuchak, Bangkok 10900, Thailand., Haema K; Center of Radiation Processing for Polymer Modification and Nanotechnology (CRPN), Faculty of Science, Kasetsart University, 50 Ngam Wong Wan Road., Ladyao, Chatuchak, Bangkok 10900, Thailand; Department of Materials Science, Faculty of Science, Kasetsart University, 50 Ngam Wong Wan Road., Ladyao, Chatuchak, Bangkok 10900, Thailand., Chirachanchai S; The Petroleum and Petrochemical College, Chulalongkorn University, Soi Chula 12, Phya Thai Road, Wangmai, Pathumwan, Bangkok 10330, Thailand., Pasanphan W; Center of Radiation Processing for Polymer Modification and Nanotechnology (CRPN), Faculty of Science, Kasetsart University, 50 Ngam Wong Wan Road., Ladyao, Chatuchak, Bangkok 10900, Thailand; Department of Materials Science, Faculty of Science, Kasetsart University, 50 Ngam Wong Wan Road., Ladyao, Chatuchak, Bangkok 10900, Thailand. Electronic address: wanvimol.p@ku.ac.th.
Jazyk: angličtina
Zdroj: International journal of biological macromolecules [Int J Biol Macromol] 2024 Dec 24; Vol. 291, pp. 139093. Date of Electronic Publication: 2024 Dec 24.
DOI: 10.1016/j.ijbiomac.2024.139093
Abstrakt: Cyclic amine-multibranched poly(lactic acid) (mPLA) was prepared as a dual antioxidant and antimicrobial toward PLA active packaging for food shelf-life extension in a case study of bread. The mPLA was coupled with piperidine (PPR) containing a heterocyclic amine derivative, which is a nature-rich bioactive function. The functions of mPLA-PPR enhancing the PLA film performance were studied in comparison with PPR, mPLA and Tinuvin® 770. The mPLA-PPR promoted miscible nucleating action in the PLA film, and the elongation at break and ductility of PLA/mPLA-PPR were significantly improved with a resistivity against electron beam (EB) irradiation. The mPLA-PPR in the PLA film showed its antioxidation potential in both solution media and solid state. The PLA free radicals in solid-state created upon EB irradiation were efficiently stabilized by mPLA-PPR. The migration of PPR from the PLA matrix into food simulants was retarded when it was anchored on the mPLA. The PLA active film has antibacterial activity to inhibit the growth of E. coli and antimicrobial activity to inhibit expansion of natural molds on bread slices. This current study showed that the PLA/mPLA-PPR active film is a promising model of a functional bioplastic packaging for EB processed food sterilization and for food shelf-life extension.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could appear to have influenced the work reported in this paper.
(Copyright © 2024 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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