Open AccessDevelopment of biodegradable smart packaging from chitosan, polyvinyl alcohol (PVA) and butterfly pea flower’s (Clitoria ternatea L.) anthocyanin extract
Author(s) -
Nurul Hidayati,
Maria Wike Wijaya,
Valentinus Priyo Bintoro,
Sri Mulyani,
Yoga Pratama
Publication year - 2021
Publication title -
food research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.218
H-Index - 7
ISSN - 2550-2166
DOI - 10.26656/fr.2017.5(3).537
Subject(s) - anthocyanin , clitoria ternatea , polyvinyl alcohol , chitosan , active packaging , materials science , ultimate tensile strength , food science , food packaging , chemistry , organic chemistry , composite material , medicine , alternative medicine , pathology
Active compounds from natural sources such as butterfly pea flowers (Clitoria ternateaL.) such as anthocyanin was found able to be integrated with chitosan and PolyvinylAlcohol (PVA) polymers in their application as smart packaging. Smart packaging thatcontains anthocyanin shows a colour response to changes in pH due to food spoilage. Thisstudy was aimed to evaluate the effects of chitosan (CH) and PVA proportion on thequality of biodegradable film incorporating butterfly pea flower’s anthocyanin (BPFA)extract included film thickness, tensile strength (TS), elongation (E%), total anthocyanincontent and the film colour response at different pH range were characterized.Concentrated anthocyanin extract was obtained from butterfly pea flower petals inultrasonic-assisted leaching using ethanol as a solvent and followed by rotary vacuumevaporation. The film-forming solution was prepared from a binary mixture of CH:PVAin the ratio of 20:80, 40:60, 60:40, and 80:20. The results showed that films obtained fromall combinations could exhibit different colour responses in various pH ranges, indicatingthe successful incorporation of anthocyanin. The film with CH:PVA ratio of 40:60showed a more pronounced colour change, among other treatments. It was alsocharacterized by a thickness of 0.15 mm, TS of 11.02 MPa, E% of 48.00%, and totalanthocyanin of 25.08 mg/g. The film showed high potential to be used as biodegradablesmart packaging for the food system which produces pH change upon deterioration.