食品科学
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胡晓波,王光然,姜雯雯,龚 毅,谢明勇*
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江西省自然科学基金项目(20132BAB204002);江西省重大科技创新研究项目(20124ACF00400); 江西省教育厅产学研合作项目(GJJ11002)
HU Xiaobo, WANG Guangran, JIANG Wenwen, GONG Yi, XIE Mingyong*
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摘要:
以苏氨酸和氯化铬为原料,在水溶液中反应合成了新型铬营养强化剂——苏氨酸铬。在单因素试验的基础上,利用Box-Behnken试验设计原理,选择四因素三水平,利用响应面法优化苏氨酸铬的合成工艺条件,确定其最佳工艺条件为苏氨酸与氯化铬物质的量比3.86∶1、反应体系pH 6.11、反应温度93.52 ℃、反应时间3.25 h,在此条件下苏氨酸铬产率为68.73%。实测值与回归模型预测值(68.82%)相对误差为0.13%,说明采用响应面法优化得到的合成条件可靠。
关键词: 苏氨酸铬, 合成, 响应面法
Abstract:
Chromium threoninate is a new type of chromium supplement. It was prepared by adding chromium chloride to an aqueous solution of threonine. By combined use of single factor method and response surface methodology with a Box-Behnken design involving four factors with three levels, the optimal synthesis conditions were determined as reaction between threonine and chromium chloride with a molar ratio of 3.86:1 for 3.25 h at pH 6.11 and 93.52 ℃. Under these conditions, the actual yield of chromium threoninate was 68.73%, similar to the expected value (68.82%) with a relative error of 0.13%, suggesting the reliability of the optimized synthesis conditions.
Key words: chromium threoninate, synthesis, response surface methodology
中图分类号:
TS201.1
胡晓波,王光然,姜雯雯,龚 毅,谢明勇*. 响应面法优化苏氨酸铬合成工艺[J]. 食品科学, doi: 10.7506/spkx1002-6630-201502007.
HU Xiaobo, WANG Guangran, JIANG Wenwen, GONG Yi, XIE Mingyong*. Optimization of Synthesis of Chromium Threoninate by Response Surface Methodology[J]. FOOD SCIENCE, doi: 10.7506/spkx1002-6630-201502007.
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https://www.spkx.net.cn/CN/Y2015/V36/I2/36