purpurin
英
美
网络 羟基茜草素; 紫茜素; 紫茜草素; 红紫素; 紫红素
双语例句
- Synthesis and Biological Activities of Copper Purpurin 18
铜紫红素-18的合成及其保肝抗溃疡活性的初步研究 - The key points for extraction of natural edible purpurin and blue pigment are described.
本文详述了天然食用紫色素和蓝色素的提取技术和操作要点。 - The alkylation and acylation for hydroxyl group linked with nitrogen were accomplished to give N alkoxy and N acyloxy purpurin 18 imides, respectively.
对其羟基进行烷基化和酰基化，合成出N取代红紫素18酰亚胺衍生物。 - Extraction Of Natural Edible Purpurin And Blue Pigment
贵重天然食用色素&紫色素和蓝色素的提取技术 - Methods: Purpurin 18 methyl ester is obtained through acidic degradation and alkaline oxidation using chlorophyll a.
方法：叶绿素a通过酸碱降解反应、甲基化反应生成紫红素18甲基酯，然后通过氧化剂对C17-18脱氢，合成具有卟吩结构的原卟啉化合物。 - The oxidized products were reacted with hydroxylamine hydrochloride to generate purpurin 18 imide by ammonolysis and recondensation.
所得氧化产物进而和盐酸羟胺反应，经胺解开环和再缩合成环构成N羟基红紫素18酰亚胺衍生物； - Spectrophotometric Determination of erythromycin Ethylsuccinate based on the charge transfer reaction between erythromycin Ethylsuccinate and purpurin
琥乙红霉素与紫色素的荷移反应及其测定 - Come to the conclusion that the samples ( including the authentic and fake) used in this study all contain Radix Rubia purpurin and rubimaillin, and the authentic ( not adulterated) mostly has higher effective ingredients content than the fakes.
得出：本研究所用样品（包括茜草正品和伪品）均含有大叶茜草素和羟基茜草素，正品茜草（不掺杂）有效成分的含量普遍高于伪品。