Application of circulating ultrasonic extraction technology in oil deep processing

Circulating ultrasonic extraction technology also has many advantages in oil deep processing. It can replace traditional processing methods in various oil processing, reduce processing cost and improve product quality. (1) The application of cyclic ultrasonic extraction in vegetable oil extraction uses ultrasonic extraction. The cavitation of ultrasonic can produce a micro sound flow, which can effectively break the boundary layer, greatly accelerate the diffusion rate, and effectively increase the proposed speed by 2-10 times. Compared with traditional pressing method and organic solvent extraction method, ultrasonic extraction has the advantages of simple method, high oil yield, pure oil taste, clear color, short production cycle, no heating, no damage to the active components, and other useful components can be extracted comprehensively, which significantly improves the economic benefits. Under ultrasonic treatment, the extraction rate of peanut oil was increased by 2.8 times. The extraction rate of oil from oil seed by ultrasonic wave can be increased by 8.3 times. Extracting oil from sunflower seeds and adding ultrasonic wave can increase the yield by 27-28%; Using ethanol to extract cottonseed oil, using ultrasonic treatment, the amount of oil extracted in 1 hour increased by 83%.

(2) The application of cyclic ultrasonic extraction in the extraction of aromatic oil

Containing aromatic oil in our country have now discovered more than 300 kinds of plants, aromatic oil extraction at present mostly by steam distillation, simple equipment, easy to operate, but in the process of extracting volatile oil prone to oxidation and polymerization, pyrolysis, etc., thereby causing loss to the aroma, flavor proposed rate is low, but the ultrasonic strengthening extract can significantly improve the extraction yield of aroma. The extraction rate of essential oil from orange peel extracted by ultrasonic method for 10min was more than 2 times higher than that of direct soaking for 2 hours, heating distillation for 2 hours, steam distillation for 2 hours and soxhlet extraction for 2 hours. In addition, the extraction rate of orange peel extracted from orange peel or ultrasonic extraction at 25℃ for 30min was 1.6 times that of conventional immersion at 50℃ for 3 hours