How to grind Rehmannia into powder

Nowadays, many people prefer to use traditional Chinese medicine to treat their diseases or regulate their bodies, etc., because traditional Chinese medicine is milder, has fewer side effects on the human body, and can effectively treat the root cause of the disease, etc. Rehmannia glutinosa is a commonly used herb and is considered important. People will grind it into powder when using it. So how do you grind Rehmannia glutinosa into powder? Let me introduce it in detail below.

How to make raw and cooked rehmannia into fine powder for pills. Drying may reduce the medicinal properties. It cannot be ground into fine powder without drying.

Freeze at the lowest possible temperature, take out and smash quickly, then freeze again at the lowest possible temperature, take out and smash quickly again until the desired temperature is reached.

By the way, ice cubes can be used to make shaved ice, but water can never be used to make shaved ice.

Notes on powdering:

1. Cleanliness of Chinese herbal medicines

Chinese medicinal materials can be classified into plant medicines, animal medicines, mineral medicines and fungi, and can be cultivated in wild and domesticated forms. These factors determine the hygienic status of Chinese herbal medicines. The country has implemented strict management on Chinese herbal medicines and has strict requirements on the cleanliness and hygiene of herbal medicines. Therefore, pharmacists should be careful to inform customers that when selecting Chinese herbal medicines for powdering, they must choose those that are clean, hygienic, meet the requirements, and have a manufacturer and production batch number.

2. The preparation of medicinal pieces should be appropriate

Another characteristic of Chinese herbal medicines is that different preparation methods lead to different effects. For example, the commonly used raw coix seeds and fried coix seeds, raw atractylodes and fried atractylodes, raw rehmannia and cooked rehmannia, raw yam and fried yam with bran, their effects are different. For example, raw coix seed has a stronger dehumidifying effect, while fried coix seed has a stronger spleen-strengthening effect; raw rehmannia cools the blood, while cooked rehmannia replenishes the blood. Pharmacy staff should remind customers that they can choose according to their own situation under the guidance of professionals.

3. Pieces containing volatile oils should not be powdered

Angelica, Chuanxiong, Angelica dahurica, rose, honeysuckle, bergamot, rose, costusroot, chrysanthemum, wild chrysanthemum, Achyranthes bidentata, and Citrus aurantium contain a lot of volatile oils and are not suitable for powdering. This is because the temperature of the grinder is high during high-speed rotation, and the volatile oils in the above-mentioned pieces are easily evaporated in high temperature, thus affecting the efficacy. However, some medicinal pieces such as Angelica sinensis will be more effective after being crushed and taken. At this time, intermittent crushing can be adopted to ensure that the temperature in the grinder will not be too high, which effectively reduces the evaporation of volatile oils.

4. High sugar content and sticky medicinal materials should be dried at low temperature first

Medicinal materials with high sugar content and viscosity, such as Rehmannia root, Bletilla striata, Anemarrhena asphodeloides, Fructus Lycii, Polygonatum odoratum, Polygonatum sibiricum, Polygonatum multiflorum, Rehmannia root, Asparagus cochinchinensis, Codonopsis pilosula, and Scrophularia ningpoensis, easily absorb moisture and become softened and sticky. They should be dried at low temperature and then crushed before powdering. If low-temperature drying is not performed before crushing, these sticky medicinal materials will adhere to the inner wall of the machine, making it difficult to crush and affecting the fineness of the powder.