Chemical constituents and free radical scavenging activity of corn pollen collected from Apis mellifera hives compared to floral corn pollen at Nan, Thailand

Table 3 The weight and character of the seven different active fractions following silica gel quick column chromatography of the DCM extract of bee corn pollen (CDEb)

Fraction	Weight (mg)	Yield^a (CDEb)	Yield^b (Bee pollen)	Character	Activity^c
CDEb1	62	2.58	0.01	Clear white solid	--
CDEb2	42	1.75	0.01	Pale yellow solid	--
CDEb3	6	0.25	0.00	Pale brown solid	--
CDEb4	5	0.21	0.00	Pale brown solid	+
CDEb5	776	32.3	0.18	Dark brown solid	+++
CDEb6	430	17.9	0.10	Sticky, dark brown solid	+++
CDEb7	760	31.7	0.18	Dark brown solid	++

^a,bYield as a % of the ^aCDEb fraction and ^bof the initial bee pollen mass
^cQualitative free radical scavenging activity, as determined by the DPPH assay sprayed onto the TLC plates, where -, +, ++ and +++ represent no, weak, moderate and strong color change (activity).

ISSN: 2662-7671