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Extracted Source: yam a water lift dry powder extracted from the tuberwater frying of the potato plant Dioscorea opposita Thunb
" this product is yellow-brown to sepia powder, the active ingredient can be soluble in methanol, hot water
"Identification" take this product plus methanol to make 5% solution for test solutionTake yam standard control medicine 1.0g heated water 40 ml, 80 degrees C ultrasound extraction for 30 minutes, the filtrate steamed dry, residue plus methanol 1 ml dissolved as a control liquidTake the above two liquids each 10 sl, respectively, point in the same silicone G board, point three boards at a time
(1) with ethyl acetate-methanol-concentrated ammonia (9:1:0.5) to expand, spray 10% pyrient acid ethanol solution, hot wind
(2) with ethyl acetate-methanol-ice acetic acid (2:1:1), UV lamp 365nm inspection, and then spray0.5% of the ketone test fluid, hot air blowing
(3) to positive butanol-pyridine-water (65:20:15) to expand, spray fennel aldehyde sulphate ethanol test liquid, hot air blowing
above three plates, fluorescent spots and visible spots corresponding rate of up to 80%
" "Check" Moisture: Not over 6.0% (Appendix IXH)
Ash: Not over 5.0% (Appendix IXK)
Heavy Metals: No over 10ppm (Appendix IXE)
Arsenic Salt: No 2ppm (Appendix IXF)
Seines: No 2.0% (Appendix IV.)
"Appendix IX)
"function" to lower blood sugar, blood lipids, antioxidant, anti-aging, strong
enhance symmolym, regulate gastrointestinal function, and have androgen-like effects
"storage" cool, dry, to avoid light