Table 2 Physicochemical parameter of NKB extract and tablet
Physicochemical | Test | Results | Spec. | |
|---|---|---|---|---|
Extract appearance | Visual performance | Brownish, Aromatic odour, Tasteless | NA | |
pH | pH Meter | 5.23 | NA | |
Moisture content(100-105°C) | Moisture content analyzer | 2.2% | NMT 1% | |
Solubility | Water soluble extractive | Add water Q.S. | 18% | NMT 16% |
Alcohol soluble extractive | Add isopropyl alcohol Q.S. | 20.3% | NMT 9% | |
Total solids content | Microwave Solids Analyzers (CEM LabWave 9000) | 0.69 | NMT 1% | |
Ash content | Total ash | Wt. of sample and wt. of original sample ratio is determined | 6.23% | NMT 7% |
water soluble ash | As above | 5.50% | ||
Acid insoluble ash | As above | 0.88% | NMT 1% | |
Sulphated ash | As above | 6.13% | ||
Particle size/shape | Microscopic analysis | 12-14.5 cm length, 1–2 cm thick; Cylindrical and branched | NA | |
Foreign matter (Residual solvents, Herbicides, pesticides, Microbial contamination) | Disc Diffusion Assay | 0.75% | NMT 1% | |