Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Hiroshi Kayahara"'
Publikováno v:
Bioscience, Biotechnology, and Biochemistry. 70:2948-2956
Hawthorn polyphenol (HP) was prepared by ethyl acetate treatment of the ethanol extract (HE) of Chinese hawthorn fruit. The concentrations of 15 polyphenols in the HP, HE, extraction residue (HJ), and a hawthorn leaf extract (HF) were determined by H
Publikováno v:
Journal of Agricultural and Food Chemistry. 53:3882-3887
The HPLC retention time, photodiode array UV spectrum analysis, and LC/MS results indicated that arbutin and chlorogenic acid are the main phenolic constituents in Oriental pear. The two compounds exist in different organs of the Yali pear, which is
Publikováno v:
Journal of Chromatography A. 1063:121-128
A method has been developed for the determination of 6'-O-feruloylsucrose, 6'-O-sinapoylsucrose, ferulic acid, sinapinic acid, p-coumaric acid, chlorogenic (3-caffeoylquinic) acid, caffeic acid, protocatechuic acid, hydroxybenzoic acid, vanillic acid
Publikováno v:
Cereal Chemistry Journal. 81:450-455
Pregerminated brown rice (PGBR) prepared by immersing in water was used for breadmaking, and effects on the dough properties and bread qualities were studied to compare with the ungerminated brown rice (BR). The substitution of BR or PGBR for wheat f
Publikováno v:
Tetrahedron Letters. 45:495-499
Phenols are deprotected with weak bases from their tert-butoxycarbonyl (Boc) derivatives. Boc deprotection with bases can avoid side reactions during the deprotection with acids. We note the lability of the Boc to bases and are able to utilize it as
Publikováno v:
Bioscience, Biotechnology, and Biochemistry. 65:634-637
It was found that ovalbumin stereoselectively oxidized one of the enantiomers of p-substituted racemic alcohols, thereby providing optically active alcohols with high optical purities. It was found out that, when used appropriately in combination wit
Publikováno v:
Biotechnology Letters. 22:295-300
During the synthesis of the dipeptide, N-benzyloxycarbonyl-l-phenylalanyl-l-phenylalanine methyl ester, from N-benzyloxycarbonyl-l-phenylalanine and l-phenylalanine methyl ester by thermolysin, the enzyme was stabilized by 20 °C up to 110 °C. The s
Publikováno v:
Biotechnology Techniques. 12:115-118
Thermolysin underwent spectral changes and pKa shifts upon mixing with alcoholic solvents. A hyperchromic spectra and shift occured upon activation of the enzyme by solvents used in dipeptide (Z-Phe-Phe-OMe) synthesis. This effect was decreased when
Publikováno v:
Biotechnology Techniques. 12:491-496
Thermolysin was stabilized by increasing the reaction temperature from 90°C to 110°C during peptide synthesis of N-(benzyloxycarbonyl)-L-phenylalanyl-L-phenylalanine methyl ester (Z-Phe-Phe-OMe). The stabilization energy was acquired from the drop
Publikováno v:
Biotechnology Letters. 19:563-568
The kinetic patterns and parameters of 12 alcoholic organic solvents of different classes inhibiting thermolysin-catalyzed synthesis of N-(benzyloxycarbonyl)-L-phenylalanyl-L-phenylalanine methyl ester (Z-Phe-Phe-OMe) in aqueous organic one-phase rea