骨素酶解液喷雾干燥工艺的响应面法优化

Optimization of spray drying process of bone extract hydrolysate liquid by response surface methodology

为了降低半固态骨素类香精香料的贮运成本,延长产品保藏期,以骨素酶解液为原料,在单因素实验基础上,采用响应面法优化了骨素酶解液的喷雾干燥工艺。以风速、进料量、进风温度为影响因素,骨素酶解液的L值、a值、b值及风味、色泽为优化指标。拟合结果发现,风速、进料量、进风温度与骨素酶解液的b值及风味间存在显著相关性(p<0.05),验证实验结果表明,所得模型具有一定可靠性。在拟合基础上,对骨素酶解液的喷雾干燥工艺进行了限值优化,结果表明,风速86.63m/s,进料量60.00mL/min,进风温度118.93℃为骨素酶解液的最优喷雾干燥工艺。此时骨素酶解液的风味得到了较好保留,色泽破坏较少。

In order to reduce transportation cost of semi-solid bone extract flavor spices, and extend its storage time,the bone extract hydrolysate liquid （BEHL） was taken as raw material, based on single factor experiments, response surface method was adopted to analyze spray drying process for BEHLWind speed, feeding rate, temperature of inlet air as factors, L value,a value, b value and flavor, color of BEHL as an optimization index.The fitting results indicated that there was a significant （p 〈 0.05） relationship between wind speed, feed rate, temperature of inlet air and b value or flavor of BEHL.The results of confirm test suggested that the models had a certain reliability.Based on the fitting models,target optimization of BEHL was performed,the results showed that the optimized process for BEHL was wind speed 86.63m/s,feed rate 60mL/min,temperature of inlet air 118.93~C. Under this process,the dried powder of BEHL contained most flavor of BEHL.its color had less damage.