Table 1: The δ¹³C and F values of the DNA extracted from Escherichia coli mediums. E.coli was supplied with different levels of 13C abundance in glucose (0, 2, 5, 10, 20 and 50 atom% ¹³C)

F indicates fractional abundance, i.e. ¹³C/(¹²C + ¹³C). Different letters represent significance of difference at P < 0.05 level.

Treatments
(atom% ¹³C)

δ¹³C
(‰ PDB)

F
(%)

0

-27.01f

1.08f

2

169.57e

1.30e

5

522.81d

1.68d

10

1044.76c

2.25c

20

3043.08b

4.35b

50

10716.09a

11.63a