Application of Polygonum multiflorum extract
A technology of Polygonum multiflorum and extract, which is applied in the application field of Polygonum multiflorum extract to control strawberry gray mold, can solve the problems of rare reports on the inhibitory effect of plant pathogens, achieve safety and environmental protection for humans and animals, and the extraction method is simple and easy to promote and apply the effect
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Embodiment 1
[0020] Get Radix Polygoni Multiflori Radix Radix Root tuber, wash and dry, and use a high-speed pulverizer to pulverize to 75 mesh fine powder with the rotating speed of 3000r / min, obtain Radix Polygoni Multiflori powder. Take Polygonum multiflorum powder 10g and put it into a triangular flask, extract the Polygonum multiflorum powder with sterile water, add sterile water 3 times, add 30mL each time, put the triangular flask on a shaker at 25°C and shake at 100r / min 60h, filter, collect the filtrate, combine the filtrate for 3 times, put the filtrate into a rotary concentration evaporator, and evaporate and concentrate at 110r / min to a paste under the conditions of 0.08MPa air pressure, water bath temperature of 45°C and condensation temperature of 5°C to obtain Red-yellow Polygonum multiflorum extract.
Embodiment 2
[0022] Wash the Radix Polygoni Multiflori, dry it in the sun, and pulverize it into a fine powder of 85 mesh with a high-speed pulverizer at a speed of 4000 r / min to obtain Polygonum Polygoni Multiflori powder. Take Polygonum multiflorum powder 10g and put it into a triangular flask, extract the Polygonum multiflorum powder with sterile water, add sterile water 3 times, add 40mL each time, put the triangular flask on a shaker at 27°C and shake at 115r / min 48h, filter, collect the filtrate, combine the filtrate for 3 times, put the filtrate into a rotary concentration evaporator, and evaporate and concentrate at 120r / min to a paste under the conditions of 0.09MPa air pressure, water bath temperature of 50°C and condensation temperature of 7°C to obtain Red-yellow Polygonum multiflorum extract.
Embodiment 3
[0024] Wash the Radix Polygoni Multiflori, dry it in the sun, and pulverize it into a fine powder of 95 mesh with a high-speed pulverizer at a speed of 5000 r / min to obtain the Radix Polygonum multiflorum powder. Take Polygonum multiflorum powder 10g and put it into a triangular flask, extract the Polygonum multiflorum powder with sterile water, add sterile water 3 times, add 50mL each time, put the triangular flask on a shaker at 29°C and shake at 130r / min 36h, filter, collect the filtrate, combine the filtrate for 3 times, put the filtrate into a rotary concentration evaporator, and evaporate and concentrate at 130r / min to a paste under the conditions of 0.1MPa air pressure, water bath temperature of 55°C and condensation temperature of 9°C to obtain Red-yellow Polygonum multiflorum extract.
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