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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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藻类蛋白质模型化合物苯丙氨酸的水热反应
, PP. 61-67
Keywords: 藻类,苯丙氨酸,水热反应,蛋白质,分解,氮含量
Abstract:
？利用石英毛细管反应器，研究了藻类蛋白质的模型化合物苯丙氨酸在水热条件下的反应特性；考察了低温段（130~220℃）苯丙氨酸的转化规律，并解析了苯丙氨酸在温度为220~340℃、反应时间为5~240min的主要分解途径及其氮元素的转化途径和分布规律。结果表明，苯丙氨酸在130~190℃下转化率很低，可作为藻类水热液化过程中提取蛋白质的参考温度；在220~280℃下，苯乙胺是主要产物，随着反应温度升高和反应时间加长，苯乙烯产率增加。苯丙氨酸先脱羧生成苯乙胺，随着反应的加剧，苯乙胺经脱氨生成苯乙烯，苯乙烯进一步加成生成少量苯乙醇；大部分氮元素先经脱羧反应转移到苯乙胺中，进一步由脱氨反应转移到水溶性较强的nh4+中。
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