Study on Extracting Technics of Walnut Oil Assisted by Ultrasonic Wave
Walnut oil with rich unsaturated fatty acids is a kind of functional oil. The effects of several ultrasonic processing parameters, such as extraction solvent, liquid - feed ratio and extraction time on the extraction of Walnut oil were investigated assisted by ultrasonic wave. The results indicated that n - hexane was the better solvent of all in extracting walnut oil. The yield of Walnut oil was increased with the increase of solvent quantity, extraction time and ultrasonic power. The optimum conditions were as follows;the ratio of liquid to feed in mass was 7:1 (mL: g) ,extraction time was 64 min and the ultrasound power was 646.40 W. Under the conditions,the oil extraction rate was 51. 5%. Obviously, the oil extraction assisted by ultrasonic wave is an efficient method.
walnut oil, ultrasonic wave, the extraction ratio of oil
NETL
NSTL
万方数据
维普
