Table 1.
Extraction yield, total polyphenol, and total flavonoid contents of var ious hot water extracts

Extraction condition1)	Yield (%)	Total polyphenol (mg GAE2)/g)	Total flavonoid (mg RE3)/g)
AE	7.95	3.47±0.16a4)	1.59±0.19a
OE	8.35	2.31±0.29bc	0.89±0.05b
HWSE	8.55	2.16±0.21bc	0.84±0.12b
HWASE	9.15	1.76±0.29c	0.63±0.04b
BE	8.50	2.69±0.06b	1.32±0.14a

AE, autoclave extraction; OE, oven extraction; HWSE, hot water & sonication extraction; HWASE, hot water & 0.5% (v/v) acetic acid & sonication; BE, boiling extraction.
GAE, gallic acid equivalent.
RE, rutin equivalent.
Values are mean&SD. Means with different letters among the different condition are significantly different (p<0.01).