Table 1 Polyphenol content of different varieties of fresh waxy corn (µg/g DW)

Phenolic acid

 Free form

1031.21 ± 33.70^bA

744.36 ± 30.01^dA

1165.73 ± 55.25^bA

882.36 ± 17.91^cB

906.37 ± 39.58^cB

1907.70 ± 29.76^aA

 Bound form

1114.60 ± 59.56^bA

415.65 ± 42.13^cB

1190.60 ± 89.28^bA

980.60 ± 21.30^bA

2157.09 ± 65.97^aA

418.11 ± 13.23^cB

 Subtotal

2145.81 ± 75.65^bc

1160.01 ± 60.18^d

2356.33 ± 145.99^b

1862.96 ± 45.23^c

3063.97 ± 116.39^a

2325.81 ± 56.77^b

Flavonoid

 Free form

872.89 ± 25.63^bcA

1260.70 ± 47.58aA

1194.52 ± 51.20^aB

685.47 ± 20.32^dA

860.66 ± 29.55^cA

975.85 ± 34.53^bA

 Bound form

833.11 ± 29.60^bA

572.91 ± 6.59^cB

1564.48 ± 89.22a^A

624.99 ± 12.15^cA

344.27 ± 7.10^dB

934.76 ± 20.34^bB

 Subtotal

1706.95 ± 38.49^c

1833.61 ± 47.97^bc

2756.98 ± 153.24^a

1310.46 ± 94.36^d

1204.93 ± 38.52^d

1910.61 ± 49.32^b

Anthocyanin

 Free form

3.56 ± 0.53^d

2.23 ± 0.31^d

21.12 ± 0.88^b

12.46 ± 0.89^c

19.44 ± 1.57^b

291.50 ± 8.233^a

 Bound form

nd

nd

nd

nd

nd

nd

 Subtotal

3.56 ± 0.53^d

2.23 ± 0.31^d

21.12 ± 0.88^b

12.46 ± 0.89^c

19.44 ± 1.57^c

291.50 ± 8.233^a

Polyphenol form

 Free form

1907.55 ± 45.56^cA

2006.12 ± 39.42^cA

2382.23 ± 88.31^bB

1578.93 ± 33.72^eA

1788.32 ± 66.87^dB

3174.11 ± 23.96^aA

 Bound form

1947.21 ± 77.30^cA

988.39 ± 22.21^fB

2754.79 ± 122.94^aA

1605.52 ± 33.61^dA

2498.73 ± 49.38^bA

1351.84 ± 42.70^eB

 Total

3856.14 ± 111.72^c

2994.56 ± 70.11^d

5136.67 ± 168.75^a

3184.49 ± 115.67^d

4286.38 ± 125.32^b

4524.44 ± 79.81^b