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一般化学工业
Optimization of Ethanol-Ultrasound-Assisted Destabilization of a Cream Recovered from Enzymatic Extraction of Soybean Oil
A novel method using ethanol and ultrasound to extract oil from cream obtained from enzyme-assisted aqueous extraction of soybean oil was developed.To evaluate the relationships between operating variables and free oil yield and to maximize the free oil yield,response surface methodology was introduced in this work.The developed regression model was fitted with R2= 0.9 5 9 1.Optimized variables were:ethanol concentration of7 3 %,ethanol addition volume of 0.5 5 L/kg,ultrasound power of 4 2 7 W,ultrasound time of 4 7 s,and ultrasound temperature of 5 3 ℃ .The free oil yield from the cream under the above conditions was 9 2.6 ±3.4 %.Scanning electron microscopy(SEM) was used to evaluate the effect of ultrasonic treatment on ethanoltreated cream,and the SEM images clearly showed that the ultrasound treatment affected dispersing and fracturing of the microstructure of ethanol-treated cream.
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大豆科技
2019年S1期
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