1,3-DIGLYCERIDE-RICH EDIBLE OILS FROM GLYCEROLYSIS OF VEGETABLE OILS. EFFECT OF THE CATALYST BASIC PROPERTIES

LIZA A. DOSSO; PABLO J. LUGGREN; J. ISABEL DI COSIMO

LATIN AMERICAN APPLIED RESEARCH

PLAPIQUI(UNS-CONICET)

Lugar: Bahia Blanca; Año: 2020

0327-0793

Vegetable edible oils enriched in diglycerides were obtained byglycerolysis under heterogeneous catalysis conditions using MgO ascatalyst. These oils contain up to 32wt.% of the 1,3-diglycerideisomer, which is believed to present unique nutritional properties toprevent obesity, compared to triglycerides or 1,2-diglycerides. Thebase site density and strength distribution of the different sites(weak, medium and strong) present on MgO as well as the initial oilconversion rate depend on the preparation procedure. The density ofmedium-strength sites increases upon increasing the severity of thepreparation procedure in the range of 673-873K in parallel to theinitial oil conversion rate. These results confirm thatmedium-strength base sites promote the kinetically relevant reactionsteps involved in the glycerolysis of vegetable oils. p { margin-top: 0.01in; margin-bottom: 0.08in; direction: ltr; text-align: justify; orphans: 2; widows: 2 }p.western { so-language: en-US }p.cjk { so-language: en-US }a:link { color: #0000ff }