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怎样识别阿胶固元膏真假
更新时间： 2020-10-05 00:00:00  

阿胶当以黄透如琥珀色，光黑如漆者为真。真者无皮臭味，夏日亦不湿软。火试：取样品少许放在坩埚内灼烧，初则迸裂，随后膨胀融化冒白烟，有浓烈的麻油香气，灰化后残渣乌黑色，质疏松，呈片或团块状，不与坩埚黏结。水试：煮沸溶解，溶液呈浅棕红色，混浊，并有白色物质析出，液面有油滴，取胶溶于水中，液澄明，无混浊。拍打：手持用力拍打桌面，碎片断面呈棕色、半透明、无异物者为真，若拍打软而不碎者，则疑为伪品。静置：阿胶溶液静置4小时后不会凝集，伪品溶液凝集成糊状。

关键词： 怎样 识别 阿胶 真假

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