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  • Title: Comparison of talc-Celite and polyelectrolyte 60 in virus recovery from sewage: development of technique and experiments with poliovirus (type 1, Sabin)-contaminated multilitre samples.
    Author: Sattar SA, Westwood JC.
    Journal: Can J Microbiol; 1976 Nov; 22(11):1620-7. PubMed ID: 10064.
    Abstract:
    For virus recovery from sewage, a mixture of talc and Celite was tested as a possible inexpensive substitute for polyelectrolyte 60 (PE 60). After adjustment of pH to 6 and the addition of 45-60 plaque forming units (PFU)/ml of poliovirus type I (Sabin) to the sewage sample under test, 100 ml of it was passed through either a PE 60 (400 mg) or a talc (300 mg)-Celite (100 mg) layer; the layer-adsorbed virus was eluted with 10 ml of 10% fetal calf serum (FCS) in saline (pH 7.2). In these experiments, PE 60 layers recovered 73-80% (mean 76%) of the input virus. In comparison, virus recoveries with the talc-Celite layers were 65-70% (mean 68%). Passage of 5 litres of raw sewage (containing 50 to 1.26 X 10(5) PFU/100 ml of the poliovirus) through the talc (15 g)-Celite (5 g) layers and virus elution with 50 ml of 10% FCS in saline gave virus recoveries of 33-63% (mean 49%). Except for pH adjustment and prefiltration through two layers of gauze to remove large solids, no other sample pretreatment was found to be necessary. Application of this technique to recovery of indigenous viruses from field samples of raw sewage and effluents has been highly satisfactory.
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