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Inhibitory Effect on Monoamine oxidase of Lactobacillus casei JH23's Metabolite
HE Yiwei 1 #,GUO Benheng 2 *,CHEN Wei 3,WU Zhenjun 2,WU Jiang 3
1.State Key Laboratory of Food Science and Technology, Jiangnan University, JiangSu WuXi 214122
2. State Key Laboratory of Dairy Biotechnology,Technology Center of Bright Dairy and Food Co.Ltd.,Shanghai 200436,China
3.State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
*Correspondence author
#Submitted by
Subject:
Funding: 973 Program of Ministry of Science and Technology of PRC(No.No. 2010CB735705)
Opened online:28 March 2012
Accepted by: none
Citation: HE Yiwei,GUO Benheng,CHEN Wei.Inhibitory Effect on Monoamine oxidase of Lactobacillus casei JH23's Metabolite[OL]. [28 March 2012] http://en.paper.edu.cn/en_releasepaper/content/4472390
 
 
Among the tested Lactobacillus strains assayed for Inhibitory activity on monoamine oxidase (MAO), the supernatant of Lactobacillus casei JH23 cultured in MRS broth showed strong inhibitory activity. The bioactive components from the supernatant could be fractioned into organic solvent soluble (O) and water soluble ones (W) by extraction with ethyl acetate. Both the organic solvent soluble (O) and water soluble components (W) demonstrated a competitive inhibitory activity to MAO in a dose-dependent manner. The IC50 for the organic solvent soluble components (O) to MAO-A and MAO-B were 1.97mg / ml, 5.67mg / ml, while IC50 for the water soluble components (W) were 1.59mg / ml and 4.83mg / ml respectively. A bioactive fraction w1 was obtained from the water soluble components (W) by sephadex-G15 chromatograph, which the IC50 for MAO-A and MAO-B were 0.327mg/ml and1.13mg/ml .W1 could be further fractioned into 2 peaks with absorbance at 200nm and 300nm respectively by RP-HPLC, and the peak appeared at 200nm had good MAO inhibitory effect. The substance will be prepared by liquid phase and determined structure, which can promote the development of spiritual degeneration disease drug.
Keywords:Lactobacillus casei JH23; Monoamine oxidase (MAO); Inhibition
 
 
 

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