title: Studies on application of a lead acetate solution as filter to the photochemical reaction of ergosterol to improve the yield of vitamin D.
abstract: Since a lead acetate solution can remove most of the ultraviolet (UV) light in the range below 275 nm which usually gives undesirable by-products in the photochemical conversion of ergosterol to vitamin D, it is useful as a filter solution for the reaction to obtain higher yield of vitamin D. When a 5% lead acetate solution was used as the filter, the yield of vitamin D was 20-25% higher than that without using filter solution.
authors.affiliation: Department of Nuclear Science, Fudan University, Shanghai, China.
authors.forename: Z R
authors.initials: ZR
authors.lastname: Lu
authors.forename: Y F
authors.initials: YF
authors.lastname: Pang
authors.forename: Q R
authors.initials: QR
authors.lastname: Shen
authors.forename: C F
authors.initials: CF
authors.lastname: Zheng
mesh_terms: D004872:Ergocalciferols / Q000138:chemical synthesis*; D004875:Ergosterol; D005374:Filtration; D007700:Kinetics; D009942:Organometallic Compounds; D010777:Photochemistry; D012996:Solutions; D013056:Spectrophotometry, Ultraviolet; D014466:Ultraviolet Rays
chemical_list: D004872:Ergocalciferols; D009942:Organometallic Compounds; D012996:Solutions; C008261:lead acetate; D004875:Ergosterol