PREDICTION MODEL FOR THE RHEOLOGICAL BEHAVIOR OF COMPLEX EMULSIONS CONTAINING SOYBEAN OIL WITH VARIABLE CONTENTS OF PHOSPHOLIPIDES AND WATER MODELE DE PREDICTION DU COMPORTEMENT RHEOLOGIQUE POUR DES EMULSIONS COMPLEXES A BASE D’HUILE DE SOJA AVEC UN CONTE
I. VINTILA 1*, A. GAVRUS 2, C. VIZIREANU 1, P. ALEXE 1 (1)”DUNAREA DE JOS” UNIVERSITY GALAŢI, FOOD SCIENCE AND ENGINEERING FACULTY, BIOCHEMISTRY-TECHNOLOGY DEPARTMENT, 111 DOMNEASCA ST., GALAŢI, ROMANIA (2)INSA RENNES, LABORATOIRE DE GENIE CIVIL ET GENIE MECANIQUE, 20 AV DES BUTTES DE COESMES, 35043 RENNES CE
The present paper research presents the validation of a mathematical model applied for the prediction of rheological behavior of the complex emulsions W/O type (water: 30%; crude, refined soybean oil: 70%). The rheological behavior was investigated for the emulsions realized with two types of industrial oils: S1-crude Soybean oil, S2-refined Soybean oil with different physical-chemical properties: 662 ppm phosphatides 0.14% moisture, FFA-index 0.73, solvent insoluble impurities content 0.17% for S1; 50 ppm phosphatides, FFA-index 0.019, 0.015% moisture, solvent insoluble impurities content 0.004% for S2. The mathematical model for the emulsions’ rheological behavior prediction was correlated with the composition of the complex emulsions W/O with crude and refined soybean oils. The parameters of the mathematical model were identified by the inverse analysis method based on the experimental rheological data values and was realized the validation of the theoretical mathematical model.