Pueraria lobata whole powder production process

Raw material selection→cleaning→peeling→slicing→color protection→rinsing→cooking→cleaning→drying→crushing→sieving→finished product.

(1) Raw material selection: Select undamaged fresh kudzu root, wash it with tap water, and remove dust and debris attached to the surface.

(2) Slicing: Use a vegetable slicer to cut the peeled kudzu into pieces of certain specifications. The purpose of slicing is to shorten the drying time. The thickness, length and width of the slices are all 1 cm. The slicing process should be completed as quickly as possible to control the occurrence of enzymatic browning during slicing.

(3) Color protection: After cleaning and peeling the pueraria lobata, use a mixture of 0.35% citric acid and 0.30% sodium metabisulfite to protect the color for 1 hour.

(4) Steaming: Color protection inhibits non-enzymatic browning, but the browning caused by the presence of oxidase in Pueraria lobata still exists, so it is necessary to heat to kill the enzyme, and the process conditions are steaming for a period of time. After cooking, the color of Pueraria lobata is easy to maintain. , whole powder is easy to brew. Steam for 16 minutes.

(5) Drying: Use drying equipment to ensure product hygiene. The drying time can be determined according to the size of the kudzu root slices, and the final moisture content is required to be below 6. Place it in a 60℃ blast constant temperature drying oven to dry.

(6) Crushing and packaging: Crush the dried kudzu root slices with a traditional Chinese medicine grinder to make the fineness of the kudzu root powder about 80 mesh.

Traditional production of kudzu starch

Starch can be extracted from wild kudzu to make nutritious food. Now is the best time to dig wild kudzu. The processing method of kudzu powder is as follows: Clean the root tubers: Select kudzu with a smooth surface, no mold and no damage, and wash it with water to remove dirt, sand and other impurities without removing the epidermis.

Crushing and refining: Send the washed kudzu root pieces into the crushing machine for crushing. Water must be added when disintegrating. The appropriate ratio of kudzu root and water is 1:3. The screen aperture of the crusher can be selected to be 2 mm, and it can be increased.

Slurry and residue separation: Choose a clean pool, pave it with wide plastic cloth, and then place a 90-100 mesh wire screen in the pool. Spread gauze in the sieve, put the slurry on the gauze, pour in water, and stir thoroughly so that the starch leaks into the pool with the water. Add water repeatedly until the starch and powder residue are completely separated. If conditions permit, you can also use a centrifuge to separate. The centrifuge speed is 1,000 rpm. Centrifuge for 10 minutes to obtain wet starch.

Precipitation: smash the Guanzhong (Chinese herbal medicine) into the water, wait for 15 minutes, then pour the Guanzhong liquid into the pool, stir gently, separate the water and powder after 4-5 hours, and precipitate the starch slurry for 48 hours Then scoop out the water on top of the starch and take out the starch chunks. Drying: The starch blocks can be packaged after they are dried. Since starch will undergo oxidative decomposition to a certain extent during the sun-drying process, it is recommended to dry starch. The appropriate drying temperature is around 60°C.

Mechanical processing process: Pueraria lobata - hydraulic conveying - cleaning and conveying - secondary cleaning - cleaning, stone removal and lifting - crushing and separation (special curved mesh extrusion mill for pueraria lobata) - sand removal - concentration Refining-vacuum dehydration-air flow drying-finished product packaging.

1. Cleaning

It is mainly to remove the sediment on the outer layer of the material and wash away the surface of the material roots. The destoning cleaning machine is to remove the hard impurities in the material. . Cleaning the raw materials for starch production is the basis for ensuring the quality of starch. The cleaner the cleaning, the better the quality of starch.

2. Crushing of raw materials

1) Break the cells of the material as much as possible to release more free starch granules.

2) Easy to separate. We do not want the skin residue to be too fine. Too fine a skin residue is not conducive to the separation of starch and other ingredients, and increases the difficulty of separating the fine residue.

3. Screening process

4. Washing process

It is completed by starch cyclone. The cyclone is divided into concentration cyclone and washing process. Refined cyclone. The starch slurry after screening first passes through the concentration cyclone, and the underflow enters the washing and refining cyclone, and finally meets the product quality requirements.

5. Starch dehydration

Use a dehydrator. It can realize automatic feeding, automatic dehydration and automatic cleaning.

6. Starch drying

The air flow dryer uses high-speed flowing hot air to suspend wet starch in it, and dries during the air flow process. It has the characteristics of high heat transfer coefficient, large heat transfer area and short drying time.

7. Starch cooling and sieving packaging

After drying, the temperature of starch is relatively high. In order to ensure the viscosity of starch, it is necessary to cool down the starch quickly after drying.

How to make cooked arrowroot powder

Cooked arrowroot powder is the process of aging raw arrowroot powder. Cooked arrowroot powder is usually made by extrusion and aging.

Hope this helps!