Issue 6, 2023

In situ crosslinked Schiff base biohydrogels containing Carica papaya peel extract: application in the packaging of fresh berries

Abstract

Although endowed with antimicrobial and antioxidant properties, fruit peel is often regarded as waste. With the focus largely on sustainable development and sustainability, this study explores the valorisation of aforesaid waste. In this work, the influence of C. papaya peel powders on the functional properties of Schiff base hydrogels of chitosan (Cs) and dialdehyde starch (DAS) was investigated for active food packaging. In this work, the hydrogels were fabricated by virtue of in situ crosslinking of –CHO moieties of DAS and –NH2 groups of Cs. The utilization of C. papaya peel extract in hydrogel films enhanced their thickness, moisture content and opacity. Furthermore, the developed hydrogel film offered versatile performances in terms of antimicrobial and antioxidant activities, water-barrier properties, high tensile strength, stretched/twisted flexibility, anti-puncture resistance, thermal stability and biodegradability. Noteworthy, the shelf life of fresh blueberries, strawberries, gooseberries and Indian jujube was extended by at least one week upon packaging with the fabricated material as compared with unpackaged ones. Thus, our work paves the path for the design of a versatile hydrogel film for potential food packaging and preservation.

Graphical abstract: In situ crosslinked Schiff base biohydrogels containing Carica papaya peel extract: application in the packaging of fresh berries

Supplementary files

Article information

Article type
Paper
Submitted
27 Jun 2023
Accepted
12 Sep 2023
First published
13 Sep 2023
This article is Open Access
Creative Commons BY-NC license

Sustainable Food Technol., 2023,1, 906-920

In situ crosslinked Schiff base biohydrogels containing Carica papaya peel extract: application in the packaging of fresh berries

G. Dalei, S. K. Das, S. S. Mohapatra and S. Das, Sustainable Food Technol., 2023, 1, 906 DOI: 10.1039/D3FB00096F

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