Table 2.
Main chemical compositions of ZEF, ZEB, and ZWF
| Sample | Catechin monomer (mg/g) |
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| GA | GC | EGC | Caffeine | C | EC | |
| ZEF | 1.3±0.0 | 14.2±0.5 | 136.3±1.7 | 30.7±0.3 | 4.6±0.1 | 55.8±0.9 |
| ZBF | 3.9±0.4 | 18.0±0.3 | 188.0±1.0 | 63.6±0.6 | 0.2±0.0 | 13.1±0.1 |
| ZWF | 2.4±0.6 | 6.1±0.2 | 5.1±0.1 | 0.2±0.0 | 0.3±0.0 | 2.4±0.5 |
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| Sample | Catechin monomer (mg/g) | |||||
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| EGCG | GCG | ECG | CG | TF1 | ||
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| ZEF | 495.7±1.7 | 9.5±0.8 | 124.0±1.0 | 1.4±0.1 | 1.3±0.0 | |
| ZBF | 57.4±0.5 | 1.2±0.0 | 5.5±0.1 | 0.4±0.0 | 0.3±0.0 | |
| ZWF | 0.1±0.0 | 0.5±0.0 | ND | ND | ND | |
ZEF, ZBF, and ZWF are extracts from Zhangping Narcissus tea cake by ethyl acetate, n-butanol, and water, respectively. The catechin monomer content is calculated based on the weight of extracts. ND means not detected. Data are expressed as mean±SD (n=3)