Study on compatibility of palm stearin and PMF blends

Compatibility study for palm stearin(PSt)and palm mid fraction(PMF)to improve the characteristics of plasticity and mouth feel melting characteristics of fats and to provide in–depth study technical data base for blending of palm oil products.The SFCs for the binary blends of palm stearin and PMF were analyzed together with the isothermal curve and the differences between theoretical to practical SFC,i.e.△SFCs.The results showed that when content of PSt was 30～50%,the blends showed marked non compatibility or serious crystals segregation and form worst monotectic at 25 ℃.The range of 35 ℃～50 ℃,the blends as also formed serious eutectic and promote the segregation of crystals clusters.The compatibility of PSt and PMF is most satisfactory at the ranges of 0 ℃～10 ℃ and 30 ℃～35 ℃.