Open AccessSTABILITY OF CAROTENOIDS IN MODEL AQUEOUS SYSTEMS 1
Author(s) -
RAMAKRISHNAN T. V.,
FRANCIS F. J.
Publication year - 1979
Publication title -
journal of food quality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.568
H-Index - 43
eISSN - 1745-4557
pISSN - 0146-9428
DOI - 10.1111/j.1745-4557.1979.tb00667.x
Subject(s) - canthaxanthin , carotenoid , monolayer , chemistry , starch , aqueous solution , water activity , pigment , cellulose , relative humidity , molecule , food science , water content , organic chemistry , biochemistry , thermodynamics , astaxanthin , physics , geotechnical engineering , engineering
The stability of the carotenoids, beta‐carotene, apo‐8′‐carotenal and canthaxanthin, was studied in the model systems of cellulose and starch equilibrated under different relative humidities. Water perse was found to exert a protective influence on these carotenoids and this effect was evident below and above the monolayer coverage for the two systems. The extent of protection increased with the moisture content and was also modified by the nature of the system and the type of carotenoid pigments. In general, canthaxanthin was the most stable and betacarotene was the least stable. The protective effect of water is probably due to the formation of hydrogen bonds between water and hydroperoxide molecules and the resultant extension of the monomolecular rate period.