. 2022 Aug 1;9:931060. doi: 10.3389/fnut.2022.931060

Table 1.

Chemical analysis of the matcha samples.

Cultivars	Zhongcha 108	Longjing 43	Quntizhong	Yingshuang	Maolv
Water content	3.28 ± 0.02^e	3.66 ± 0.08^d	3.97 ± 0.04^c	4.12 ± 0.08^b	6.20 ± 0.05^a
Water extracts content	40.86 ± 0.72^b	42.20 ± 0.26^a	39.15 ± 0.35^c	40.46 ± 0.23^b	37.15 ± 0.37^d
Free amino acid	5.27 ± 0.13^b	4.98 ± 0.23^c	5.39 ± 0.08^b	4.98 ± 0.16^c	5.90 ± 0.09^a
Protein	2.56 ± 0.18^b	2.66 ± 0.35^ab	2.67 ± 0.32^ab	2.69 ± 0.21^ab	3.11 ± 0.22^a
Soluble Sugar	6.65 ± 0.04^b	7.14 ± 0.03^a	6.66 ± 0.13^b	6.54 ± 0.09^b	6.60 ± 0.18^b
Tea polyphenols	11.97 ± 0.03^bc	12.43 ± 0.24^a	11.73 ± 0.16^c	11.03 ± 0.17^d	12.16 ± 0.24^ab
Caffeine	2.25 ± 0.24^c	2.46 ± 0.25^bc	2.90 ± 0.34^ab	3.12 ± 0.38^a	3.26 ± 0.21^a
GC	0.20 ± 0.06^a	0.25 ± 0.01^a	0.22 ± 0.02^a	0.11 ± 0.04^b	0.20 ± 0.02^a
EGC	1.40 ± 0.14^b	1.63 ± 0.21^ab	1.49 ± 0.14^ab	0.65 ± 0.10^c	1.80 ± 0.13^a
C	0.05 ± 0.01^b	0.06 ± 0.01^b	0.06 ± 0.01^b	0.02 ± 0.01^c	0.08 ± 0.01^a
EC	0.34 ± 0.04^b	0.41 ± 0.06^ab	0.37 ± 0.03^b	0.21 ± 0.04^c	0.44 ± 0.03^a
EGCG	5.00 ± 0.30^b	4.88 ± 0.51^b	5.81 ± 0.32^ab	6.38 ± 0.82^a	6.47 ± 0.55^a
GCG	0.11 ± 0.02^ab	0.09 ± 0.01^b	0.11 ± 0.01^ab	0.12 ± 0.02^a	0.13 ± 0.01^a
ECG	0.81 ± 0.07^b	0.86 ± 0.10^b	1.03 ± 0.07^a	0.81 ± 0.12^b	1.17 ± 0.09^a
CG	0.04 ± 0.01^a	0.03 ± 0.01^b	0.04 ± 0.01^ab	0.02 ± 0.01^c	0.04 ± 0.00^ab
GA	0.03 ± 0.00^cd	0.03 ± 0.00^d	0.04 ± 0.00^bc	0.06 ± 0.01^a	0.05 ± 0.00^b

Data are expressed as means ± SEM (n = 3). Means with different letters (a-e) were considered significantly different at p < 0.05 according to Tukey's test. GC, (+)-gallocatechin; EGC, (-)-epigallocatechin; C, (+)-catechin; EC, (-)-epicatechin; EGCG, (-)-epigallocatechin gallate; GCG, (+)-gallocatechin gallate; ECG, (-)-epicatechin gallate; CG, (-)-epigallocatechin gallate; GA, gallic acid.