ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Exploration of Lac agro-industry biowaste as antioxidant and food preservative for their sustainable waste management

Mohd Ali, Dipak Kumar Hazra, Goutam Mondal, Yengkhom Bijen Kumar, Rajib Karmakar, and Sushanta Saha

Down Stream Agro-Processing Division, ICAR-National Institute of Secondary Agriculture (Formerly Application and Product Development Division, ICAR-Indian Institute of Natural Resins and Gums), Jharkhand, India

E-mail: mdali20117@gmail.com

Received: 13 February 2023  Accepted: 17 April 2023

Abstract:

The aim of this study was to explore the potential of Lac agro-industry alkali-stable, resinous biowaste as a source of natural antioxidants and food preservatives. Therefore, the gummy biowaste was purified by solvent–solvent partitioning followed by chemical modification with Jones reagent. The pure and oxidized gummy mass was characterized by FT-IR and NMR analysis. The antioxidant capacity of both pure and oxidized gummy mass was studied against 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH) and 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), and the preservative ability was studied on tomato puree. Our results suggested that the pure and oxidized gummy mass scavenged ABTS and DPPH radicals at the examined dose. However, the oxidized gummy mass shows a better food preservative ability against the food-rotting microbes, Aspergillus niger, Aspergillus flavus, and Penicillium sp. at studies concentration of 2%. Furthermore, we hypothesized the hydrogen atom transfer and radical addition molecular mechanisms based on their chemical structure to explain their antioxidant capabilities, which is critical for suitable chemical modification for developing better antioxidants in future for potential therapeutic, food and other industrial applications.

Keywords: Lac agro-industry gummy mass; Antioxidant capacity; Food preservative; GM; OGM

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-023-02838-9

Chemical Papers 77 (9) 4995–5005 (2023)