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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
  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
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