Research Article
Rapid Characterization of Tanshinone Extract Powder by Near Infrared Spectroscopy
Table 4
Results of physical attributes tests of tanshinone extract powders.
| | Type | Index | Values | Relative standard deviation |
| | Homemade (20 batches) | Specific surface area/m2·g−1 | | 0.276 | | /m | | 0.4427 | | /m | | 0.2353 | | /m | | 0.1523 | | Tapped density/g·cm−3 | | 0.083 | | Moisture/% | | 0.405 |
| | Commercial (30 batches) | Specific surface area/m2·g−1 | | 0.1722 | | /μm | | 0.2119 | | /μm | | 0.4209 | | /m | | 0.3089 | | Tapped density/g·cm−3 | | 0.096 | | Moisture/% | | 0.264 |
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The , , and values indicate the maximal particle size diameter that includes 10%, 50%, and 90% of particles, respectively.
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