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新和成β-胡萝卜素 江苏南京-食品商务网
新和成β-胡萝卜素 β-胡萝卜素生产厂家 食品级β-胡萝卜素 规格齐全 β-胡萝卜素是胡萝卜素中的一种最普通的异构体。以异戊二烯残基为单元组成的共轭双键,属多烯色素。 呈深红紫至暗红色有光泽的斜方六面体或板状微结晶的晶体或结晶性粉末。有轻微异臭和异味。 稀溶液呈橙黄或黄色,浓度 ...
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