• Applied Chemistry for Engineering
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• v.21 no.1
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• pp.6-10
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• 2010

In order to research the effect of solvents of extract on biological activities of Phyllostachys nigra Munro, antioxidative activity, superoxide dismutase (SOD)-like activity, nitrite scavenging activity, tyrosinase inhibitory activity, angiotensin-converting enzyme (ACE) inhibibitory activity in vitro were investigated. When ethyl acetate and hexane as solvents were used, the total phenols concentrations were 44.1 and 47.3 mg/kg, respectively, which was about 2.0 fold higher than that of water. The antioxidive activity was affected by solvents of extraction. The antioxidative activity was increased in order of hexane > ethyl acetate > n-butanol > methanol > water extraction. On the other hand, in the case of SOD-like activity, it was in the order of methanol > n-butanol > hexane > ethyl acetate extraction. The nitrite scavenging ability showed the most remarkable activity at pH 1.2 irrespective of solvents. Especially, when pH was increased from 1.2 to 6.0 using ethyl acetate extraction, it was decreased from 69.2 to 7.8%. The tyrosinase inhibitory activity was in the range of 15.2~21.3% and was increased in order of water > methanol > n-butanol>hexane > ethyl acetate extract. These results suggest that hexane and ethyl acetate extraction of Phyllostachys nigra Munro can be used in bioactive and functional materials.