Enzymatic acyl exchange to vary saturation in di- and triglycerides View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1979-07

AUTHORS

R. W. Stevenson, F. E. Luddy, H. L. Rothbart

ABSTRACT

The reactionrac-glyceryl-1-palmitate-2,3-dioleate(POO) and palmitic acid(P) (excess) → glyceryl-2-oleate-1, 3-dipalmitate(POP) + O catalyzed by porcine pancreatic lipase is a model for the general reactionAAA′’ +A′’ → A′’AA′’ +A.(P,O,A = palmitoyl, oleyl, acyl groups or palmitic, oleic, or fatty acids;AAA′’, etc., are triglycerides). The re-esterification is accom-panied by formation of palmitate-enriched digly-ceride —rac-glyceryl-1-palmitate-2-oleate(PO- OH@#@) exceedsrac-glyceryl-1,2-dioleate (OO-OH) — and glyceryl-2-monoleate (HO-O-OH). Buffer pH optimum for maximumPOO conversion and palmitate enrich-ment in 15 min is between 6.0 and 6.5 at 38 C. Hexane is used to dissolveP in the oil phase. In-creasing the amount of dissolvedP by increasing the amount of hexane added increases palmitate enrich-ment and decreases reaction rate. At 36 C and 6.0 buffer pH (26 volume %POO and 15 volume %P in oil phase), yields after 3 hr werePOP, 22%;PO- OH, 27%; HO-O-OH, 11%;POO, 27%; glyceryl-1,2,3-tri-oleate(OOO), 3%; andOO-OH, 10%. More... »

PAGES

676-680

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf02660072

DOI

http://dx.doi.org/10.1007/bf02660072

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1002159117


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