- An efficient and economical MTT assay for determining the antioxidant activity of plant natural product extracts and pure compounds.
An efficient and economical MTT assay for determining the antioxidant activity of plant natural product extracts and pure compounds.
Journal of natural products (2010-06-23)
Yunbao Liu, Muraleedharan G Nair
PMID20565070
ABSTRACT
Antioxidants scavenge free radicals, singlet oxygen, and electrons in cellular redox reactions. The yellow MTT [3-(4,5-dimethylthiazole-2-yl)-2,5-diphenyltetrazolium bromide] is reduced to a purple formazan by mitochondrial enzymes. NADPH is the basis of established in vitro cell viability assays. An antioxidant assay has been developed utilizing the redox reaction between MTT and selected natural product extracts and purified compounds. This simple, fast, and inexpensive MTT antioxidant assay is comparable with the lipid peroxidation inhibitory assay and can be mechanized to achieve high throughput.
MATERIALS
Product Number
Brand
Product Description
Sigma-Aldrich
SyntheChol® NS0 Supplement, 500 ×, synthetic cholesterol, animal component-free, sterile-filtered, aqueous solution, suitable for cell culture
Chlorogenic acid, primary reference standard
Sigma-Aldrich
L-Ascorbic acid, puriss. p.a., ACS reagent, reag. ISO, Ph. Eur., 99.7-100.5% (oxidimetric)