Journal of Food Quality / 2017 / Article / Tab 6

Research Article

Variation in Flavonoid Composition and Radical-Scavenging Activity in Ginkgo biloba L. due to the Growth Location and Time of Harvest

Table 6

TE values of G. biloba leaf in ABTS postcolumn assay.

Number of sampleGrowing locationTime of harvestTE (µmol g−1)
QuercetinKaempferolIsorhamnetin

1NorthJune2.08 ± 0.011.76 ± 0.020.04 ± 0.01
July5.76 ± 0.035.32 ± 0.050.40 ± 0.02
August5.12 ± 0.024.72 ± 0.040.28 ± 0.01
September5.46 ± 0.024.46 ± 0.040.18 ± 0.01
October4.09 ± 0.024.12 ± 0.040.06 ± 0.00

2WestJune3.20 ± 0.021.64 ± 0.060.28 ± 0.04
July9.38 ± 0.035.86 ± 0.081.90 ± 0.08
August8.94 ± 0.055.12 ± 0.041.54 ± 0.06
September7.11 ± 0.014.61 ± 0.110.45 ± 0.03
October8.42 ± 0.024.29 ± 0.051.00 ± 0.08

3CentralJune2.00 ± 0.011.84 ± 0.020.24 ± 0.01
July4.52 ± 0.024.16 ± 0.040.68 ± 0.01
August5.76 ± 0.034.64 ± 0.041.12 ± 0.01
September2.92 ± 0.013.39 ± 0.030.34 ± 0.01
October3.97 ± 0.023.86 ± 0.030.26 ± 0.01

4SouthwestJune2.56 ± 0.012.32 ± 0.020.16 ± 0.00
July6.40 ± 0.038.00 ± 0.070.68 ± 0.03
August4.96 ± 0.025.84 ± 0.050.64 ± 0.02
September6.17 ± 0.036.18 ± 0.050.23 ± 0.02
October4.18 ± 0.023.89 ± 0.030.25 ± 0.01

5SouthJune2.88 ± 0.011.60 ± 0.100.16 ± 0.00
July5.84 ± 0.034.04 ± 0.040.64 ± 0.01
August8.80 ± 0.044.72 ± 0.040.80 ± 0.00
September6.86 ± 0.033.62 ± 0.030.25 ± 0.00
October3.42 ± 0.021.98 ± 0.020.03 ± 0.00

Notes. () Different letters on columns show significant difference between time of harvest for each compound and growing location based on Tukey’s HSD test at ; () results are presented as the mean ± standard error () of the recorded concentrations.

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