Evaluation of the Ability of Aqueous Lignin-Carbohydrate Complex Extracted from Botanical Waste to Scavenge Reactive Oxygen Species by Using an Electron Spin Resonance Method

Kazuko Toh, Hidekatsu Yokoyama, Hiroyuki Noda

Abstract


Lignin-carbohydrate complexes (LCCs) were extracted from botanical waste, Quercus acutissima, rice bran, peanut husks, tofu refuse, and used green tea leaves. The contents of the lignin and phenolic hydroxyl groups in the LCCs taken from these samples were positively correlated. The capacity of scavenging reactive oxygen species was evaluated by employing an electron spin resonance method for its superoxide dismutase (SOD)-like activity. The lignin content and the SOD-like activity of LCC from Quercus acutissima were much greater than those of other LCCs. These findings suggest that the SOD-like activity of LCCs depends on the lignin content.

Keywords


Lignin-carbohydrate complexes;SOD-like activity;botanical waste;ESR

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