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Surviability of Listeria monocytogenes in Agricultural Field Soil.
2009
Moshtaghi, H. | Garg, S. R. | Mandokhot, Usha V.
Survivability of Listeria monocytogenes in clay loam soil was examined at 30° C for a period of 35 days. The microorganism inoculated in soil steadily declined from 3.5 × 10 6 g -1 to 3.9 × 10 4 g -1 (P = 0.05) on 35 th days. Destruction of normal soil microflora by heat treatment resulted in marginal rise in 3.3 × 10 6 g -1 of L. monocytogenes to 4.2 × 10 6 g -1 during the first 7 days, followed by steady decline to 5.6 × 10 4 g -1 on 35 th days. Heat treated soil inoculated with lower concentration of L. monocytogenes (3.6 × 10 4 g -1 ) supported sharp rise in its population to 4.8 × 10 6 g -1 (P=0.05) during the first weak which gradually declined, but remained higher (6.1 × 10 4 g -1 ) than the initial load even on 35 th days. In non-sterile soil, the rise was less appreciable but L. monocytogenes maintained its levels (10 4 g -1 ) during the experimental period. Survivability of the microorganisms was also observed in the soil with added chicken manure, cattle manure or sheep/goat manure.
显示更多 [+] 显示较少 [-]Microbial flora of eggs and egg contents from organized and unorganized poultry farms.
2011
Rajmani , R. S. | Verma, S. P.
In the study, 348 bacterial isolates comprising of Escherichia coli (100), Klebsiella aerogens (45), Proteus mirablis (35), Peudomonas aerogens (20), Staphylococcus sp. (78), Streptococcus sp. (13), Bacillus sp. (57) were isolated from egg shell and egg contents of 150 egg samples collected from local market in Patna (Bihar). The isolates were subjected to antibiogram. This study demonstrated that egg from organized farm microbial contamination than unorganized poultry farm reflecting the effect of environment, storage and transportation on microbial quality of eggs.
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