The medicine value, production, current situation of demand and supply, preparation methods and comprehensive utilization of yam diosgenin are summarized in this paper.

对黄姜皂素的药用价值、生产、供求现状，制备方法及综合利用的研究进展作一综述。

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Yam formerly diosgenin, supplement and not sluggish, not hot not dry, can repair tempers and benefit stomach Yin, and fill the kidneys and only as auxiliary lung of the product.

山药原名薯蓣，补而不滞，不热不燥，能补脾气而益胃阴，而补肺益肾只能作为辅助之品。

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ConclusionThe double-separation is clean production technology of diosgenin. The utilization rate of yam increases. Furthermore, the period of this process is greatly shorter than pre-fermentation.

结论双分离法为黄姜皂素清洁生产工艺，资源利用程度高，且生产周期缩短。

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