Characterization of acyl-quinic acids and antioxidant capacity in defective green coffee beans using LC-HRMS
Year: 2025
Type: article
Abstract: A significant proportion of defective green coffee beans (GCBs) are produced during the pre- and post-harvesting processes, reducing overall bean quality. Although GCBs can be used as a source of bioactive compounds, few relevant analyses of such uses have been reported. This study focuses on the characterization and quantification of acyl-quinic acids in 10 different types of defective Coffea arabica GCBs, along with an investigation of their antioxidant capacity. A total of 37 acyl-quinic acids were identified, with 3- p -coumaroyl-4-feruloylquinic acid, 3-feruloyl-4- p -coumaroylquinic acid, 4- p -coumaroyl-5-feruloylquinic acid, and 4-feruloyl-5-dimethoxycinnamoylquinic acid reported for the first time in Arabica GCBs. Defective GCBs (full black, partial black, insect damage, withered, and floater types) had significantly higher acyl-quinic acid contents compared with non-defective GCBs. Among them, the black, insect damage, and withered types had greater antioxidant capacity compared with non-defective beans. These findings suggest that defective GCBs can be viable sources of bioactive compounds for the nutraceutical or pharmaceutical industries. • Thirty-seven acylquinic acids were identified in defective green coffee beans. • 3 p Co-4FQA, 4 p Co-5FQA, and 4F-5dCiQA were first reported in Arabica coffee beans. • 3F-4 p CoQA was identified for the first time in both Arabica and Robusta species. • Five defective beans had higher acylquinic acid content than non-defective beans. • Defective coffee beans can be used as a sustainable source of bioactive compounds.
Source: Food Chemistry X
Authors: Kwan Joong Kim, Dae-Ok Kim
Institution: Kyung Hee University
Language: English
Topic: Coffee research and impacts
Subfield: Pharmacology
Field: Medicine
Domain: Health Sciences
Open Access status: gold
Estimated APC paid: $2,330
OpenAlex ID: W4409918770