Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Results of selected NIR wavenumber of the four components: moisture, caffeine, tea polyphenols, and tea polysaccharides.
| Component | Wavenumber (cm−1) |
|---|---|
| Moisture | 6694–7293, 7892–8193 |
| Caffeine | 4000–4894, 6994–7293 |
| Tea polyphenols | 4295–5494, 6694–6994, 7293–7593, 7893–8193 |
| Tea polysaccharides | 4595–4894, 5794–6394, 7001–7293, 7893–8212, 8793–9393, 9692–10,000 |
