Abstract:
본 발명은 생변환 시스템을 이용한 오르토-디하이드록시이소플라본의 제조방법에 관한 것으로, 보다 상세하게는 항산화 기능이 우수하고 미백 효과를 가지는 오르토-디하이드록시이소플라본을 효율적으로 제조하기 위하여 다이드제인과 제니스테인을 방선균 유래의 미생물, 특히 스트렙토마이세스
에버미틸리스 , 노카르디아 파르키니카( Nocardia
farcinica ) 또는 스트렙토마이세스 린콜네시스 ( Streptomyces lincolnesis )로 생변환시키는 오르토-디하이드록시이소플라본의 제조방법에 관한 것이다. 오르토-디하이드록시이소플라본, 미백용 화장료, 항산화
Abstract:
A method for preparing ortho-dihydroxyisoflavones having high antioxidative and skin-whitening effects through the biotransformation system is provided to improve the preparation yield of ortho-dihydroxyisoflavones by using microorganisms. The ortho-dihydroxyisoflavones including 7,8,4݆-trihydroxyisoflavone, 7,6,4݆-trihydroxyisoflavone, 7,3݆,4݆-trihydroxyisoflavone and 7,5,3݆,4݆-tetrahydroxyisoflavone are prepared by biotransforming daidzein and genistein with a microorganism derived from Actinomyces selected from Streptomyces evermitilis, Nocardia farcinica and Streptomyces lincolnesis through site specific hydroxylation at 3݆ site in a batch reactor to which oxygen is supplied.
Abstract:
PURPOSE: A method for identifying protein kinase substrate specificity using a peptide library is provided to rapidly determining the substrate specificity of a protein phosphatase, and to examine the role of the protein phosphatase. CONSTITUTION: A method for identifying protein kinase substrate specificity comprises the following steps: forming a peptide library with a constant amino acid sequence on the surface of a solid support resin; forming a hybrid with randomized peptide libraries by repeating the previous step; reacting the peptide libraries with a phosphatase for forming the peptide library with phosphorylated threonine or serine; reacting an antibody combined with a biotin with the phosphorylated peptide library; reacting the obtained product with neutravidin or streptavidin including phosphatase or peroxidase; detecting the change of properties by the reaction of the phosphatase or the peroxidase for selecting the solid support resin with transformed peptide libraries; and an analyzing the amino acid sequence of the peptide after separating the peptide from the resin.