Abstract
Beta-cryptoxanthin (β-CRX), a pro vitamin A carotenoid was extracted from Kocuria marina DAGII, a gram positive bacteria isolated from soil. To determine the antioxidant activity of β-CRX against free radicals, DPPH, ABTS, H2O2 and TAC assay were performed. The scavenging results showed antioxidant activity of beta-cryptoxanthin. The scavenging activity increased with increased pigment concentration. The IC50 value of beta-cryptoxanthin for DPPH, ABTS and H2O2 were found to be 32.51 ± 1.15 µg/ml, 41.91 ± 0.33 µg/ml and 38.30 ± 1.13 µg/ml respectively. The TAC assay value of beta cryptoxanthin was 872.0101 ± 1.84 µg BHT/mg of sample. This showed that beta-cryptoxanthin extracted from K.marina DAGII cells can serve as economical pigment with antioxidant property.
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