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Inhibitory effect of 1,3‐diglycerides during adsorption of β‐carotene onto attapulgite and sepiolite
Author(s) -
Boki Keito,
Sakamoto Naomitsu,
Minami Kazuo
Publication year - 2001
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/s11746-001-0334-8
Subject(s) - adsorption , chemistry , carotene , sepiolite , diglyceride , glyceride , monoglyceride , organic chemistry , fatty acid , raw material
The adsorption isotherms of β‐carotene on attapulgite and sepiolite were measured in the presence of 1,3‐diglyceride in n ‐hexane to elucidate the relative inhibitory power of the diglycerides, hydroxyl group, carbon number, and double bond for adsorption bleaching. The adsorption mode of β‐carotene was the Langmuir type. The inhibition of β‐carotene adsorption may be caused by the polarity of diglycerides and the formation of diglyceride micelles. The relative inhibitory power of 1,3‐diolein, 1,3‐distearin, and 1,3‐dipalmitin toward β‐carotene adsorption was 1.49, 1.40, and 0.99, respectively. Therefore, the relative inhibitory power due to the hydroxyl group and increase in the carbon atom of the fatty acid in glyceride was 0.41–0.49.