Research of compatibility and harmonicity between palm stearin and soybean oil

The compatibility of palm stearin ( POs) and soybean oil ( SBO) was analyzed using ΔSFC value.Based on single factor investigations, orthogonal experiment was carried out to optimize the blending technical parameters of the POs- SBO blends. The results showed that POs- SBO appeared eutectic phenomenon within experimented temperature range, and POs- SBO could become stable under using blenders lecithin, span60 and monoglyceride.The types and amounts of blenders significantly affected stability of blended oil, and there were interactions in blenders.With the blending conditions of 0.6g /kg span60, 60℃ temperature and 20min, blended oil with 9∶1 of POs and SBO kept homogeneous at room temperature, and the centrifugal separation rate was 1.3%.In addition, the oxidation stability of blended oil was superior to SBO.