Table 1.
Physicochemical parameters of spraydried powder of Piper betle hot water extract
| Moisture content | 2.2%-2.5% (w/w) |
| Total ash | 6.8%-7.0% (w/w) |
| Acid insoluble ash | 0.003%-0.005% (w/w) |
| Water soluble ash | 4.1%-4.3% (w/w) |
| Ethanol extractable matter | 15.8%-16.2% (w/w) |
| Heavy metalsa | |
| Mercury (Hg) | Not detected |
| Lead (Pb) | Not detected |
| Cadmium (Cd) | Not detected |
| Arsenic (As) | Not detected |
| Microbial contamination | |
| Test for Escherichia coli/g | Absent |
| Test for Salmonella spp/g | Absent |
| Test for Staphylococcus aureus/g | Absent |
| Test for Pseudomonas aeroginosa/g | Absent |
a
Limit of detection (mg/kg); Pb: 0.50; Cd: 0.10; As: 0.05; Hg: 0.05