Naphtho-Gamma-Pyrones Produced by G131: New Source of Natural Nontoxic Antioxidants

Overview

Journal Biomolecules

Publisher MDPI

Specialties Biochemistry
Molecular Biology

Date 2019 Dec 28

PMID 31878243

Citations 8

Authors

Quentin Carboue

Marc Maresca

Gaetan Herbette

Sevastianos Roussos

Rayhane Hamrouni

Isabelle Bombarda

Affiliations

Soon will be listed here.

Abstract

Seven naphtho-gamma-pyrones (NγPs), including asperpyrone E, aurasperone A, dianhydroaurasperone C, fonsecin, fonsecinone A, fonsecin B, and ustilaginoidin A, were isolated from G131, a non-toxigenic strain. The radical scavenging activity of these NγPs was evaluated using ABTS assay. The Trolox equivalent antioxidant capacity on the seven isolated NγPs ranged from 2.4 to 14.6 μmol L. The toxicity and ability of the NγPs to prevent HO-mediated cell death were evaluated using normal/not cancerous cells (CHO cells). This cell-based assay showed that NγPs: (1) Are not toxic or weakly toxic towards cells and (2) are able to protect cells from oxidant injuries with an IC on HO-mediated cell death ranging from 2.25 to 1800 μmol mL. Our data show that G131 strain is able to produce various NγPs possessing strong antioxidant activities and low toxicities, making this strain a good candidate for antioxidant applications in food and cosmetic industries.

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