| dc.description.abstract | We had conducted study to discover whether or not there was any antioxidant compound
in extracts of algal (Scenedesmus dimorphus and Spirulina fusiformis) and yeast (Phaffia
rhodozyma) or fungus (Monascus purpureus). The purpose of this study was to determine
activity of respective culture extracts as sources of natural antioxidant through their
inhibition activities on bleaching of β-carotene against free radicals derived from oxidation
of linoleic acid. Analysis of chemical constituents of the respective cultures was performed
using GC-MS and the results showed that textract of S. dimorphus and S. fusiformis
contained terpenoids (phytol), and benzofuranon that might be potential as antioxidant
compound. The assay for antioxidant activity indicated that extracts of algal, yeasts and
fungal cultures demonstrated considerably high activity to retain the bleaching of βcarotene, however, they were lower than that of exhibited by butylated hydroxy toluene
(BHT) as positive control for a synthetic antioxidant. | en_US |
