1 . In low temperature, reaction of ketone with sodium acetylide synthesized 1 - ethynyl - 2,3, 4,5 - tetramethyl - 2 - cyclopentene - 1 - ol; 1,2 - diphenyl - 2 - hydroxy - 3 - butine - 1 - one; 3,4 - diphenyl - 1,5 - hexadiine - 3,4 - diol and 3,4 - ...

报道了在低温条件下, 以邻二酮和α-环烯酮为原料与炔钠反应,合成了2,3, 4,5-四甲基-1-乙炔基-2-烯-环戊醇、1, 2 - 二苯基 -2 - 羟基 -3 - 丁炔 -1 - 酮、3, 4 - 二苯基 -1,5-己二炔-3,4 - 二醇和3,4 - 二苯基 -3 - 环戊烯 -1 -酮4种化合物.

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2 . A transketolase - defective Bacillus subtilis strains HG 02 was treated with diethylsulfate ( DES ) to obtain D - ribose producing strain.

研究了以硫酸二乙酯 ( DES ) 为诱变剂,诱变生产D - 核糖的转酮醇酶缺陷型枯草芽孢杆菌HG02,考察了不同诱变剂用量对菌体致死率及其生产能力的影响.

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3 . Methods: TLC was applied to the identification of germacrone, curdione curcuma and curcumin of Radix Curcuma.

方法: 采用薄层色谱法鉴别郁金类药材中姜黄素、吉马酮、 莪术二酮、莪术醇.

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4 . Ingredients: Rose extract, whitening factor, rrimethylglycine, glycerol, propylene glycol, silicone.

成分: 玫瑰提取液, 美白因子, 三甲基甘氨酸, 甘油, 丙二醇, 硅酮.

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5 . Ingredients: olive extract, moisturizing factor, rrimethylglycine, glycerol, propylene glycol, silicone.

成分: 橄榄提取液, 保湿因子, 三甲基甘氨酸, 甘油, 丙二醇, 硅酮.

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