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. 2019 Jan 2;12(1):1–6. doi: 10.14202/vetworld.2019.1-6

Table-3.

The results are shown as log10 TCID50/ml (mean±SE) of Newcastle disease virus inactivating activity by the mean of reaction in 1%, 5%, and 10% fresh charcoal ash and slaked lime solution in the absence or presence of organic materials.

Conditions Fresh charcoal ash Slaked lime


Absence of organic materials Presence of organic materialsa Absence of organic materials Presence of organic materials




1%b 5% 10% 1% 5% 10% 1% 5% 10% 1% 5% 10%
tpcc 8.08±0.38 8.17±0.29 8.08±0.38 8.08±0.38 8.08±0.38 8.08±0.38 8.00±1.09 8.00±1.09 8.00±1.09 8.00±1.09 8.00±1.09 8.00±1.09
0 sd 7.83±0.14 7.92±0.29 7.67±0.76 7.83±0.88 8.08±0.52 8.00±0.50 7.58±0.95 7.67±1.01 7.75±1.32 7.83±0.95 7.58±1.01 7.83±0.95
1 min NT NT NT NT NT NT 7.00±0.50 6.83±0.38 6.92±0.14 NT NT NT
3 min NT NT 5.25±0.66 NT NT 6.25±0.43 5.08±0.38 4.75±0.25 4.92±0.38 5.92±0.76 5.92±0.72 5.58±0.76
5 min NT NT 4.67±0.29* NT NT 5.17±0.14 4.33±0.52* 4.17±0.63* 4.25±1.09* 5.33±0.76 4.42±1.04 4.92±0.58
10 min NT NT 4.33±0.29* NT NT 4.58±0.14* NT NT NT 3.92±0.80* 4.00±0.90* 3.83±0.95*
30 min 7.17±0.52 6.50±1.39 NT 8.17±0.29 7.50±0.66 NT NT NT NT NT NT NT
1 h 7.25±0.90 5.08±0.58 NT 7.58±0.38 7.00±0.87 NT NT NT NT NT NT NT
2 h 7.17±0.95 3.38±1.15* NT 7.33±0.72 6.92±0.76 NT NT NT NT NT NT NT
a

Fetal bovine serum was added to fresh charcoal ash and slaked lime solution as 5% organic materials of total volume.

b

Concentration of fresh charcoal ash and slaked lime solution (%w/v).

c

The titer converted into an index in log10 of virus control.

d

Added 1M Tris-HCl before virus. eThe titer converted into an index in log10 of the recovered virus after indicated time of treatment such as 5 sec, 30 sec, 1 min, 5 min, 10 min, 30 min, 1 h, 2 h, 3 h, and 6 h. fNT=Not tested.

*

Inactivation effective when RF was ≥3