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《CHINESE JOURNAL OF LUMINESCENCE》 2000-01
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The Optimum Photochemical Synthesis of Vitamin-D_2 by New Ultraviolet Fluorescence Light Source

CHU Ming hui 1, GUO Jian qiang 1, GAO Dian kun 1, SUN Shu lan 1, XIAO Yi 2, WANG Lian qin 3 [WT6BX](1.Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130021, China; 2.Jilin Hospital f  
The relation between the transformation rates of photochemistry reaction and the time of illumination was described. Under the conditions of optimum matched spectrum, the ergosterol used as raw materials will beturned into vitamin D 2 and other byproducts. By series of experiments, it is found that the 283nm waved ultraviolet light source is fit for the photochemistry reaction.With this light source, the transform effect is best. With increasing illumination time, the transformation rate goes up and the content of the main product vitamin D 2 increases.But at the same time the content of the by products including tachysterol and lumisterol increase accordingly.So the time of illumination is a key factor in the production of vitamin D 2. We hope that these data on Vitamin D 2 will be usefal to producers, with which they can compare their manufacture parameters and improve their production technology.
【Fund】: 国家重点科技项目!(攻关 )计划专题合同编号 :96-C0 3 -0 1-0 2
【CateGory Index】: O644.1
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