In order to improve the degreasing rate of rabbit bone meal, the parameters of ultrasonic assisted solvent degreasing process were optimized with rabbit limb bone as raw material. In this study, the degreasing agent was selected by degreasing rate and protein retention rate, and the ultrasonic assisted degreasing parameters were optimized by single factor and Box-Behnken response surface experiment. The degreasing rates of rabbit bone meal under different technological conditions were compared and studied, and the production validation test was carried out finally. Results showed that ethyl acetate is the best degreaser. By single factor experiment, the optimum conditions of ultrasonic assisted degreasing were liquid to material ratio of 5∶1(g∶g), ultrasonic power of 360 W, ultrasonic time of 15 min. On the basis of single factor, the parameters of ultrasonic assisted degreasing were optimized by response surface method, and the quadratic regression equation was established, the optimal parameters of ultrasonic assisted degreasing process of rabbit bone were obtained finally, which were liquid to material ratio of 5.3∶1(g∶g), ultrasonic power of 480 W, ultrasonic time of 24 min, the degreasing rate of rabbit bone meal was (94.63±0.20)%, the relative error with the theoretical prediction value was less than 5%, which will have certain guiding significance for the application of animal bone meal.
XU Jingbing
,
LI Xue
,
HE Zhifei
,
MAO Qing
. Optimization of ultrasonic assisted degreasing process of rabbit bone meal[J]. Food and Fermentation Industries, 2020
, 46(17)
: 145
-150
.
DOI: 10.13995/j.cnki.11-1802/ts.024320
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