Study on Bacteriostasic Activity and Scavenging DPPH· Capability of Pigment from Purple Potato

Abstract

Abstract: The bacteriostasic activity and scavenging DPPH· capability of the pigment from purple potato was studied.The results showed that the pigment have activity against Bacillus subtilis,Staphylococcus aureus,Salmonelle Dublin and Escherichia coli.The minimum inhibiting contents are 41.75,25.05,25.05 mg/L and 300.58 mg/L,respectively.And the pigment have better scavenging effect on DPPH·.The amount of pigment from purple potato necessary to decrease initial [DPPH·] by 50%(EC50)was 20.842 mg/L.

Key words: pigment from purple potato； bacteriostasic； DPPH·, ；

WANG Jin-Hua, ZENG Hai-Ying, QIN Li-Kang, ZHOU Bi-Jun. Study on Bacteriostasic Activity and Scavenging DPPH· Capability of Pigment from Purple Potato[J]. FOOD SCIENCE, 2007, 28(9): 107-111 https://doi.org/

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Study on Bacteriostasic Activity and Scavenging DPPH· Capability of Pigment from Purple Potato

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