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Pretreatment of soybean oil for physical refining: Evaluation of efficiency of various adsorbents in removing phospholipids and pigments
Author(s) -
Gutfinger T.,
Letan A.
Publication year - 1978
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/bf02671406
Subject(s) - adsorption , chemistry , phosphoric acid , tonsil , refining (metallurgy) , soybean oil , chromatography , freundlich equation , nuclear chemistry , biochemistry , organic chemistry , biology , immunology
Abstract A study was conducted on the efficiency of several adsorbents (Tonsil L80, Tonsil ACC, Fuller's earth, Celite, Kaoline, silicic acid, and Florosil) in removing phospholipids and color bodies from phosphoric acid degummed soybean oil. Best results under the condi‐tions of the experiments were obtained with Tonsil L80 at a 2% concentration and 100 C (reduction in phosphorus content from 17.3 to 3.1 μ/g oil, and in photometric color from 21.6 to 2.4). Removal of phospholipids from the oil by Tonsil L80 and Tonsil ACC follows the Freundlich equation. A colorimetric method for determination of microamounts of phos‐pholipids and a spot test for their quantitative evalua‐tion were also developed.