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Sorption Isotherms and Light Stabilities of Aluminum Laked Riboflavin 5′‐Phosphate
Author(s) -
HUANG A. S.,
BYERLY D. S.
Publication year - 1992
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1992.tb05465.x
Subject(s) - riboflavin , adsorption , chemistry , sorption , phosphate , desorption , langmuir adsorption model , flavin mononucleotide , vitamin , inorganic chemistry , chromatography , cofactor , organic chemistry , biochemistry , enzyme
Aluminum oxide was used to insolubilize (i.e. to lake) riboflavin 5′‐phosphate (FMN) to improve the light stability of vitamin B 2 . HPLC was used to determine adsorption percentage and light stabilities of laked FMN. The adsorption of FMN on aluminum oxide was very effective. An FMN content of 55% in lake was achievable, with adsorption of 91%. The adsorption isotherm was of the Langmuir class, and differed from the desorption isotherm. The stabilities of laked FMN at different light intensities and a w values were significantly (p=0.05) higher than those of free FMN.