Rice Bud Identification
The germination rate of this product, according to the sampling method of herbs (Appendix II A), take two samples of diagonal to about 10g, check the number of buds and total grains, calculate the percentage of buds. The budding rate must not be less than 85%.
Microscopic identification of powder characteristics
Yellow white.
1 The endosperm cells contain starch granules. The single granules are irregularly polygonal. The edges are sharp. The diameter is 2-10 μm. Occasionally, the umbilical point is concave, the striae are not obvious, the multiple granules are composed of most single granules, and the whole pod is mostly ovoid. .
2 Non-glandular single-celled hairs are visible on the lateral malleolus and are 150-250 μm long.
Physical and chemical identification
(l) Take 2g of this product powder, add 4ml of water and place it in a mortar, and let it stand for a while. Draw the supernatant and filter. The filtrate was spotted on a filter paper and sprayed with a pre-trike reagent in a supply box at about 100°C for 1 to 2 minutes to give a purple patch.
(2) Take the above water extract, spot on the filter paper, spray aniline monophthalic acid reagent, bake at 105 °C 5min, showing brown spots.
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