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有些药材在产地加工时为了增加其色泽洁白,往往用硫黄熏制,以利于商品外观好看。常用此法加工的药物主要有山药、白芷、泽泻、川贝母、天麻、菊花等。事实证明,用这种方法加工药材有许多弊端,试述如下。 1 药材熏硫可能破坏其化学成分硫黄燃烧时产生大量的酸雾,内含单质硫及二氧化硫,二氧化硫与少量的水结合生成的硫酸,对某些物质有一定
Some medicinal herbs in the production process in order to increase its color and white, often smoked with sulfur, in order to facilitate the appearance of good-looking goods. Commonly used this method of processing drugs are yam, white peony, Alisma, Fritillaria, Tianma, chrysanthemum and so on. Facts have proved that there are many disadvantages in using this method to process medicinal materials, as described below. 1 Smoked sulfur may destroy the chemical composition of sulphur. When sulphur burns, it generates a large amount of acid mist, containing elemental sulphur and sulphur dioxide. Sulphur dioxide is combined with a small amount of water to generate sulphuric acid.