Influence of Phospholipids on the Crystallization of Waxes

RIVAROLA, G; AÑÓN, M.C; CALVELO, A

JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY (JAOCS)

SPRINGER

Año: 1988 vol. 65 p. 1773 - 1773

0003-021X

The effect o f l e c i t h i n s on wax c r y s t a l l i z a t i o n in sunflowerseed oil was studied. The r e s u l t s showed t h a t t h e presence o f l e c i t h i n s does n o t modify t h e nucleation stage, but decreases t h e c r y s t a l l i n e size. Lecithin has a minimal e f f e c t on v i s c o s i t y The effect o f l e c i t h i n s on wax c r y s t a l l i z a t i o n in sunflowerseed oil was studied. The r e s u l t s showed t h a t t h e presence o f l e c i t h i n s does n o t modify t h e nucleation stage, but decreases t h e c r y s t a l l i n e size. Lecithin has a minimal e f f e c t on v i s c o s i t y and does n o t change t h e w a x / o i l equilibrium ratio. It is proposed that t h e main mechanism o f a c t i o n o f l e c i t h i n i n v o l v e s t h e p a r t i a l adsorption on t h e surface o f t h e wax c r y s t a l s i n t e r f e r i n g with t h e i r growth. The effect o f l e c i t h i n s on wax c r y s t a l l i z a t i o n in sunflowerseed oil was studied. The r e s u l t s showed t h a t t h e presence o f l e c i t h i n s does n o t modify t h e nucleation stage, but decreases t h e c r y s t a l l i n e size. Lecithin has a minimal e f f e c t on v i s c o s i t y and does n o t change t h e w a x / o i l equilibrium ratio. It is proposed that t h e main mechanism o f a c t i o n o f l e c i t h i n i n v o l v e s t h e p a r t i a l adsorption on t h e surface o f t h e wax c r y s t a l s i n t e r f e r i n g with t h e i r growth. and does n o t change t h e w a x / o i l equilibrium ratio. It is proposed that t h e main mechanism o f a c t i o n o f l e c i t h i n i n v o l v e s t h e p a r t i a l adsorption on t h e surface o f t h e wax c r y s t a l s i n t e r f e r i n g with t h e i r growth.