title: HPLC analysis and optimization of enzymatic synthesis of 4'-O-(beta-D-glucopyranosyl)-D-pantothenic acid.
abstract: We analyzed beta-glucosidase-catalyzed transglucosylation to D-pantothenic acid using a reversed-phase HPLC system in order to obtain 4'-O-(beta-D-glucopyranosyl)-D-pantothenic acid (PaG) at a higher yield. The HPLC system was simpler and more straight-forward for the PaG analysis than the previously employed bioassay method and could also be adopted for efficient isolation of PaG. Penicillium decumbens naringinase showed the highest glucosyl transfer activity to D-pantothenic acid, and the reaction using smaller amounts of naringinase for prolonged periods of reaction time (70 h<) was important to attain higher yields of glucosyl transfer. Maximum overall yields of PaG of 10 and 4% (mol/mol, based on D-pantothenic acid) were obtained using beta, beta'-trehalose and cellobiose, respectively, as glucosyl donors. The value was 3.6- and 1.4-times higher, respectively, than that obtained by previous synthesis and isolation procedures.
authors.affiliation: Department of Nutritional Physiology, Faculty of Nutrition, Kobe Gakuin University, Hyogo, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Okada
authors.forename: M
authors.initials: M
authors.lastname: Kyoguchi
authors.forename: T
authors.initials: T
authors.lastname: Nakayama
authors.forename: R
authors.initials: R
authors.lastname: Hirota
authors.forename: T
authors.initials: T
authors.lastname: Amachi
authors.forename: T
authors.initials: T
authors.lastname: Ueda
mesh_terms: D000818:Animals; D001234:Aspergillus niger / Q000201:enzymology; D002475:Cellobiose / Q000378:metabolism; D002480:Cellulase / Q000378:metabolism; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D006026:Glycoside Hydrolases / Q000378:metabolism; D009097:Multienzyme Complexes / Q000378:metabolism; D010205:Pantothenic Acid / Q000031:analogs & derivatives / Q000032:analysis* / Q000096:biosynthesis / Q000302:isolation & purification / Q000378:metabolism*; D010407:Penicillium / Q000201:enzymology; D014199:Trehalose / Q000378:metabolism; D001617:beta-Glucosidase / Q000378:metabolism*
chemical_list: D009097:Multienzyme Complexes; D002475:Cellobiose; D010205:Pantothenic Acid; C019513:D-pantothenic acid 4'-O-beta-glucoside; D014199:Trehalose; D006026:Glycoside Hydrolases; C039827:naringinase; D001617:beta-Glucosidase; D002480:Cellulase