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Items | Standards | Results |
Characters | Brown red oily volatile liquid with special aroma of ginger | Qualified |
Relative density (20/20℃) | 0.870—0.882 | 0.876 |
Refractive index (20℃) | 1.488—1.494 | 1.489 |
Optical rotation (20℃) | -28°— -47° | -32° |
solubility | soluble in 75% ethyl alcohol | Qualified |
Assay | Zingiberol,zingiberone ,zingiberene ,gingerol≥30% | Qualified |