Onion waste based-biorefinery for sustainable generation of value-added products

Bioresour Technol. 2022 Oct:362:127870. doi: 10.1016/j.biortech.2022.127870. Epub 2022 Aug 29.

Abstract

Waste derived from the onion processing sector can be harnessed for the production of organic acids, polyphenols, polysachharides, biofuels and pigments. To sustainably utilize onion processing residues, different biorefinery strategies such as enzymatic hydrolysis, fermentation and hydrothermal carbonization have been widely investigated. This review discusses the recent advances in the biorefinery approaches used for valorization of onion processing waste followed by the production of different value-added products from diverse classes of onion waste. The review also highlights the current challenges faced by the bioprocessing sector for the utilization of onion processing waste and perspectives to tackle them.

Keywords: Bioactives; Biofuel; Biorefinery; Onion waste; Organic acids.

Publication types

  • Review

MeSH terms

  • Acids
  • Biofuels* / analysis
  • Fermentation
  • Onions*
  • Waste Products

Substances

  • Acids
  • Biofuels
  • Waste Products