Comparative Study: Caffeine Content in Panjiawan Green/Black/Jasmine Teas (ISO 10727)
Aug 04, 2025
Testing Methodology
Certified by Eurofins (Report #EU2024-CAF-553) following ISO 10727:2022 standard:
Caffeine Content (mg/g dry weight)
|
Tea Type |
Mean |
Range |
|
Green Tea |
32.6 |
30.4-34.8 |
|
Black Tea |
36.9 |
34.1-39.7 |
|
Jasmine Green Tea |
28.1 |
26.3-29.9 |
Key Findings
Jasmine Effect：Scenting process reduces caffeine by 13.8% vs base green tea
Fermentation Impact：Black tea oxidation increases caffeine solubility (+11.7%)
Decaffeination Tech (CO₂ supercritical extraction)
‖ Low-Caf Option：≤15mg/g(retains 92% EGCG)
‖ Night-Friendly Blend：Jasmine + chamomile(6.2mg/g)
Commercial Applications
|
Market Segment |
Recommended Product |
Caffeine Range |
|
Athletes |
Black Tea Energy Boost |
35-38mg/g |
|
Office Workers |
Mid-Caf Jasmine Green |
25-28mg/g |
|
Sensitive Groups |
Decaf Jasmine Herbal |
≤8mg/g |
