Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Chapman University

Food Science (MS) Theses

2023

Articles 1 - 1 of 1

Full-Text Articles in Life Sciences

Kinetic And Mass Spectrometric Characterization Of Anti-Greening Mechanisms Of Cysteine And Glutathione In Chlorogenic Acid-Lysine Solutions, Charles Taylor Drucker May 2023

Kinetic And Mass Spectrometric Characterization Of Anti-Greening Mechanisms Of Cysteine And Glutathione In Chlorogenic Acid-Lysine Solutions, Charles Taylor Drucker

Food Science (MS) Theses

Effective decolorization methods mitigating green compound formation from alkaline chlorogenic acid-amino acid reactions can facilitate greater consumption of chlorogenic acid-rich products. While thiols show promise as decolorization agents to replace sulfites, their application has not been optimized. In this work, cysteine and glutathione were probed for their varying kinetic effects on the onset of chlorogenic acid-lysine induced greening. A six-parameter model developed from a reparametrized Weibull cumulative distribution function accurately captured the time- and thiol concentration-dependence of greening in chlorogenic acid-lysine-thiol solutions at pH 8.0 and 9.0, illustrating the pH-dependence of each thiol’s effectiveness at lowering terminal greening magnitude as …