Assessment and comparison of phytochemical constituents and biological activities of bitter bean (Parkia speciosa Hassk.) collected from different locations in Malaysia

Table 3 Total flavonoid content and some separated flavonoid compounds from ethanol extract of P. speciosa seed collected from different locations of Malaysia

Locations	Total flavonoids	Quercetin	Rutin	Kaempferol	Catechin	Luteolin	Myricetin
Perak	12.4 ± 3.51^a	2.71 ± 0.69^a	1.80 ± 0.29^a	0.66 ± 0.09^a	1.48 ± 0.59^a	1.00 ± 0.19^a	0.76 ± 0.22^a
Negeri Sembilan	9.2 ± 1.49^b	2.15 ± 0.49^a	1.91 ± 0.38^a	0.42 ± 0.04^b	1.15 ± 0.24^a	0.66 ± 0.05^b	0.27 ± 0.02^c
Johor	7.4 ± 1.88^c	1.47 ± 0.38^b	ND	ND	0.90 ± 0.33^b	0.49 ± 0.01^c	0.42 ± 0.03^b

Data are means of triplicate measurements ± standard deviation. Means not sharing a common single letter in each column for each measurement were significantly different at P < 0.05. The units of total flavonoids and flavonoid compounds are mg quercetin equivalents per gram DM and mg per gram DM
ND not detected

ISSN: 2661-801X