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当前位置: 首页 > 文章 > 水酶法制取大豆油乳状液射流空化破乳工艺优化 农业机械学报 2019 (9) 357-363
Position: Home > Articles > Optimization of Emulsion Demulsification Technique with Jet Cavitation for Water-enzymatic Soybean Oil Transactions of the Chinese Society for Agricultural Machinery 2019 (9) 357-363

水酶法制取大豆油乳状液射流空化破乳工艺优化

作  者：
李良;田甜;吴长玲;李杨;江连洲;王中江
单  位：
东北农业大学食品学院
关键词：
大豆油;水酶法;射流空化;破乳率;总提油率
摘  要：
为探究射流空化对水酶法制取大豆油所产生乳状液的破乳机制,通过光散射粒径、破乳率、总提油率和乳状液显微结构为指标分别考察射流空化压力、射流空化温度和射流空化时间对乳状液破乳机制的影响。破乳率和总提油率随着射流空化压力(0. 2～1. 0 MPa)、射流空化温度(80～120℃)、射流空化时间(5～25 s)的增加而增加,射流空化作用实现彻底破乳后,破乳率和总提油率反而下降。乳状液粒径分布及激光共聚焦显微镜显示破乳后分散的小粒径油滴转变成直径较大的油滴。在单因素试验基础上,采用响应面分析法对射流空化辅助水解破乳工艺条件进行优化,确定最优破乳工艺条件为:射流空化压力0. 8 MPa、射流空化温度100. 92℃、射流空化时间21. 38 s,此条件下破乳率为90. 29%,总提油率为87. 06%。
译  名：
Optimization of Emulsion Demulsification Technique with Jet Cavitation for Water-enzymatic Soybean Oil
作  者：
LI Liang;TIAN Tian;WU Changling;LI Yang;JIANG Lianzhou;WANG Zhongjiang;College of Engineering,Northeast Agricultural University;Harbin Food Industry Research Institute;
关键词：
soybean oil;;water-enzymatic method;;jet cavitation;;demulsification rate;;total oil extraction rate
摘  要：
In order to explore the demulsification mechanism of soybean oil emulsion produced by aqueous enzymatic method,the effects of jet cavitation pressure,jet cavitation temperature and jet cavitation time on the demulsification mechanism of soybean oil emulsion were investigated by light scattering particle size analysis, demulsification rate, total oil extraction rate and emulsion microstructure. The results showed that the demulsification rate and total oil extraction rate were increased with the increase of jet cavitation pressure( 0. 2 ～ 1. 0 MPa),jet cavitation temperature( 80 ～120℃) and jet cavitation time( 5 ～ 25 s). After the complete demulsification,the demulsification rate and total oil extraction rate were decreased. The particle size distribution of emulsion and laser confocal microscopy showed that the dispersed small size oil droplets were changed into larger diameter oil droplets after demulsification. On the basis of single factor experiment,response surface methodology was used to optimize the process conditions of jet cavitation assisted hydrolysis demulsification. The optimum demulsification conditions were determined as follows: jet cavitation pressure was 0. 8 MPa,jet cavitation temperature was 100. 92℃,jet cavitation time was 21. 38 s. Under this condition,the demulsification rate was 90. 29%,and the total oil extraction rate was 87. 06%. The research result provided a theoretical basis for jet cavitation assisted enzymatic demulsification technology,and it was beneficial to the industrial application and promotion of aqueous enzymatic oil extraction technology.

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