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KMID : 0613820150250020197
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Journal of Life Science
2015 Volume.25 No. 2 p.197 ~ p.205
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Biological Activity and Chemical Characteristics of Cordyceps militaris Powder Fermented by Several Microscopic Organisms
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Ahn Hee-Young
Park Kyu-Rim
Yoon Kyoung-Hoon
Lee Jae-Yun
Cho Young-Su
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Abstract
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The comparative effects of the fibrinolytic action, antioxidative activity, and tyrosinase inhibition of Cordyceps militaris powder and fermented Cordyceps militaris powders were investigated using several microscopic organisms. The nutritional components such as phenolic compounds, flavonoids, and minerals were also measured. The total phenolic compounds and flavonoid concentrations were highest in the Cordyceps militaris powder fermented by Aspergillus oryzae. Major minerals were K, Ca, Mg, and Zn. Native polyacrylamide gel electrophoresis (native-PAGE) analysis of the total protein patterns of Cordyceps militaris powder and fermented Cordyceps militaris powders revealed slight varietal differences. Fibrinolytic activity was highest in the Cordyceps militaris powder fermented by Bacillus subtilis and Aspergillus kawachii. The DPPH radical scavenging activity was slightly stronger in the powder fermented by Monascus purpureus; however, these samples all exhibited a relatively low activity when compared with butylated hydroxytoluene (BHT). Tyrosinase inhibition activity was stronger in the powder fermented by Aspergillus oryzae than in unfermented powder. These results may provide basic data for understanding the biological activities and chemical characteristics of Cordyceps militaris powder fermented by several microscopic organisms for the development of functional foods.
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KEYWORD
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Antioxidative activity, Cordyceps militaris, fermentation, fibrinolytic activity, tyrosinase inhibition activity
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