2020年6月20日星期六

Introduction to the citrus aurantium extract

Citrus Aurantium Extract and its cultivated varieties or dried young fruit of Citrus sinensis Osbeck are the extracts of Fructus aurantium L. From May to June, collect the self falling fruits, remove the impurities, dry them in the sun or dry them at low temperature. The product is hemispherical in shape, with a diameter of 3-5cm. The Acerola Cherry Extract is brown or tan, with granular protuberances, concave oil chambers at the top of protuberances, and obvious style vestiges or pedicel marks. In the section, the peel is yellow white, smooth and slightly uplifted, 0.4-1.3cm thick, with 1-2 rows of oil chambers scattered on the edge. Matcha Green Tea Powder is hard and not easy to break. There are 7-12, a few to 15, and the juice sac is brown to tan in dry shrinkage. The air is fragrant, bitter and slightly sour. From May to June, collect the self falling fruits, remove the impurities, dry them in the sun or dry them at low temperature. It is better to have hard quality and strong fragrance. Mainly distributed in Jiangsu, Zhejiang, Guangdong, Guizhou, Sichuan, Jiangxi and other places.
Gardenia Yellow, melting point 184-1850c, hydrochloride crystallization 151-152, soluble in water. Heavy tartrate, melting point 188-189, soluble in water, insoluble in ethanol, almost insoluble in chloroform and ether. Hydrochloride, colorless crystal (ethanol ether), melting point 166-167. Racemization is easy to occur in the separation of strong acid and strong base ion exchange resin.

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