Studies on application of a lead acetate solution as filter to the photochemical reaction of ergosterol to improve the yield of vitamin D.
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.
Lu
Z R
ZR
Department of Nuclear Science, Fudan University, Shanghai, China.
Pang
Y F
YF
Shen
Q R
QR
Zheng
C F
CF
D004872:Ergocalciferols / Q000138:chemical synthesis*; D004875:Ergosterol; D005374:Filtration; D007700:Kinetics; D009942:Organometallic Compounds; D010777:Photochemistry; D012996:Solutions; D013056:Spectrophotometry, Ultraviolet; D014466:Ultraviolet Rays
D004872:Ergocalciferols; D009942:Organometallic Compounds; D012996:Solutions; C008261:lead acetate; D004875:Ergosterol