排序方式: 共有64条查询结果,搜索用时 15 毫秒
41.
42.
43.
44.
45.
蔗糖与 L-精氨酸缩合反应属美拉德反应的一种,能形成褐色的“类黑色素”,本实验产物用 GC-MS 分析仪进行表征,得到了食品着色致香物质,1 实验部分1.1 实验材料蔗糖(优级)、L-精氨酸(生化级)、乙醚(分析纯)1.2 缩合物的制备在装有搅拌器、温度计、四流冷凝管的三口烧瓶 相似文献
46.
47.
48.
Supercritical carbon dioxide fluid extraction (SFE) was studied as a rapid method for extraction of volatile and semivolatile compounds of Chinese commercial cigarettes. The method was compared with simultaneous distillation and extraction (SDE). Temperature and pressure for the SFE were optimized. The extracts obtained by the two methods showed different characters in composition and represented differently the flavor characteristics of tobacco; compared to SDE, SFE can extract compounds within a shorter time and avoid the thermal degradation and solvent contamination of samples. The extracts by the two extraction methods are complementary for investigating the flavor characteristic of tobacco products. 相似文献
49.
设计了利用电话网络以及串行总线开发的自动售烟系统,该系统实现了香烟的网络化销售和全自动管理。 相似文献
50.
利用蚕豆根尖微核技术,对香烟烟雾凝集物(CSC)进行了诱变研究。结果表明CSC对植物体与对人体和哺乳动物体具有同样较强的诱变效应,并呈现剂量效应关系。 相似文献