-Amylase and -Glucosidase Inhibitory Activities of Phenolic Extracts from Eucalyptus grandis × E. urophylla Bark

Table 1

Quantitative analysis of extracts and fractions from E. grandis × E. urophylla bark.

Sample	Preparation yields (%)	Total phenolic content
		(mg g^−1 extract/fraction)
Bark crude extract	19.39
EB-hexane extract (EB-H)	1.15
EB-ethyl acetate extract (EB-E)	3.86
EB-butanol extract (EB-B)	5.62
EB-water extract (EB-W)	7.47
Total recovery	93.35
Fractions from EB-E
EB-E-1	44.91
EB-E-2	16.34
EB-E-3	3.14
EB-E-4	2.11
EB-E-5	3.32
EB-E-6	6.05
EB-E-7	6.93
Total recovery	82.80

Gallic acid was used for the calibration curve and results were expressed as gallic acid equivalent (mg GAE g⁻¹ of extract).
All values are expressed as mean ± standard deviation () of three independent samples. RSD < 5%.
Calibration formula used: , ; is absorbance value; is concentration in mg mL⁻¹.