Table 1. Constituents of FRLFE, unprocessed lychee fruit extract, and green tea extract.

	Constituents	FRLFE*	Unprocessed lychee fruit extract**	Green tea extract*	Method***
Total polyphenols	Flavanols	≥80	≥70	≥98	Porter method + HPLC (monomers); Folin method
Flavanol monomers	Catechin, epicatechin, epicatechin gallate, and epigallocatechin gallate (EGCG)	15.0±1.1	6.2±1.4	69.9±3.6	HPLC
Flavanol dimers	Procyanidin A1, A2, B1, and B2 and epicatechin-EGCG	16.3±1.1	11.8±2.2	7.6±1.3	HPLC
Flavanol trimer	Epicatechin-procyanidin A2	4.1±0.7	5.1±1.0	0.9±0.3	HPLC
Other phenolic compounds	Other trimers, tetramers, oligomers, polymers	≥45	≥47	≥20	Calculated by the amounts#

*Ratio of weight is expressed as mean ± standard deviation in percentage (n = 10) ([10]; Amino Up Chemical Co., Ltd., unpublished data).

**Ratio of weight is expressed as mean ± standard deviation in percentage (n = 14) ([10]; Amino Up Chemical Co., Ltd., unpublished data).

***Described in the Materials and Methods .

^#Total polyphenols – (monomers + dimers + trimer).