2012•Zhongguo youzhiRequires access
Extraction of peanut oil with ultrasonic-assisted aqueous enzymatic method
Yang Li, Lianzhou Jiang, Baokun Qi, Zongyuan Han
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Abstract
Based on single factor experiments,the optimum ultrasonic temperature(45 ℃) and time(20 min) of extracting peanut oil by ultrasonic-assisted aqueous enzymatic method were determined.The amount of enzyme,enzyme hydrolysis pH,enzyme hydrolysis temperature and time were used as influencing factors and the peanut oil yield was selected as response value,and the response surface methodology was employed to optimize the enzyme hydrolysis conditions.The results showed that the optimum conditions were as follows:amount of enzyme 1.7%,enzyme hydrolysis temperature 56 ℃,reaction time 3.8 h,ratio of material to liquid 1∶ 4 and enzyme hydrolysis pH 9.3.Under the optimum conditions,the peanut oil yield was(95.50±0.44)%.