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Table 1 Comparison of DNA concentrations in anaerobic sludges from WWTP and OFMSW samples in the two experimental line

From: Effects of freezing storage on the DNA extraction and microbial evaluation from anaerobic digested sludges

 

DNA µg/g of weighted sample ± SD

WWTP

 

Fresh samples

Frozen samples

A samples

246.1 ± 107.7

89.6 ± 48.2

B samples

182.0 ± 65.2

75.5 ± 35.4

C samples

103.2 ± 44.6

28.3 ± 12.4

D samples

143.9 ± 64.9

43.5 ± 21.1

All samples

168.8 ± 89.0

59.2 ± 39.7

OFMSW

Days elapsed

E sample

F sample

1

21.6

32.36

19

9.16

22.8

28

13.64

35.88

29

4.64

12.36

21

7.32

15.84

27

4

2.36

  1. The mean values and SD are reported, based on 10 replicates for each type of samples, concerning WWTP samples. For OFMSW experimental line, only two samples were available, so SD was not calculated, since E and F samples were independent sludge samples