The water content of general medicinal materials is required to be controlled at

The absolute water content of processed products of traditional Chinese medicine should be controlled at 7%- 13%.

1, water standard for fruits and seeds

Fruits and seeds contain a lot of sugar, oil and starch, which are easy to cause insects, poison and oil. Its water content can be controlled in the range of 5%-9%. If the water content of incense is 10.47%, it will become soft and insect-prone, and its suitable hydration amount should be 7.5%.

When the water content of Lycium barbarum is 8%, it is slightly moist, and 6% is more suitable. When the water content of Astragalus complanatus seeds is 13.5%, it will become toxic. When the water content of barnyard grass in Zhejiang is above 10%, it will regain moisture and rancidity.

2. Water standards for roots and rhizomes

Roots and roots are easy to preserve, and the water content of these pieces can be controlled at 6%- 13%. The water content in winter and spring can be close to the upper limit, and it is suitable to be close to the lower limit in summer. We should focus on monitoring the roots and root pieces with high moisture absorption, starch and sugar content. The water content of such tablets should be controlled between 6%- 10%.

Such as rhubarb, Fangfeng, etc. It is very easy to get worms, and it resurfaces in summer. When the water content of raw rhubarb exceeds 10%, it will bend, and when it reaches 8%, it will become sticky, which will affect the storage and dispensing.

Water content control standard requirements:

Variety with water requirement 1- 12%: Vitex negundo.

2. Varieties with water requirement of 10- 13%: Cynanchum stauntonii, Zizhuan, Picrorhiza picrorhiza, Anemarrhena asphodeloides, Cimicifuga rhizome, Polygonum Multiflori Radix, Radix Clematidis, Gan Song, Misha, rice, Herba Ephedrae, Herba Schizonepetae, Flos Lonicerae, Flos Sophorae, Lobeliae Chinensis, Rose, magnolia officinalis flower and Rosa chinensis.

3. Varieties with water requirement 10- 14%: Radix Codonopsis, Radix Puerariae, Rhizoma Alpiniae Officinalis, Rhizoma Alpiniae Officinalis, Equisetum equisetum, Rhizoma homalomenae, Rhizoma Typhonii, Cymbidium hybridum, Lotus, Nutmeg, Fructus Canarii, Aristolochiae and Papaver Shell.