Six extracts-based natural antimicrobials were evaluated for their ability to inhibit the growth of Escherichia coli O157:H7, Escherichia coliNRRL3008 and Salmonella sp. Degree of inhibition was determined by the disk-diffusion assay. Results revealed the inhibitory effect of extracts (Without dilution and the same volume).Garlic extract had the strongest effect against E.coli NRRL3008 (24.00mm), Escherichia coli O157:H7 (22.00mm) and Salmonella sp. (18.00mm). Clove extract had stronger action against E. coli O157:H7 (35.00mm), E. coli NRRL.3008 (27.00mm) than Salmonella sp. (23.00mm). The most powerful effect of ginger extract was against E. coli O157:H7 (30.00mm), E.coli NRRL.3008 (26.00mm) followed by Salmonella sp. (22.00mm). E. coli O157:H7 (28.00mm) and E. coli NRRL.3008 (23.00mm) were strongly influenced by cardamom extract. Cinnamon extracts effective action against E. coli O157:H7 (31.00mm) followed by E. coli NRRL3008 (28.00mm) than Salmonella sp. (23.00mm). Rosemary extract strongly affected against E. coli NRRL3008 (25.00mm), E. coli O157:H7 (23.00mm) and Salmonella sp. (22.00mm). Extract mixture (clove, cinnamon and ginger) at level of 0.6% had stronger effect against E. coli O157:H7 (36.00mm), followed by E. coli NRRL3008 (34.00mm).The effectiveness of the ethanolic extracts against the growth of E. coli O157:H7 during 7 days of storage period at 37ºC followed the order: ginger > cinnamon > rosemary > cardamom > garlic> clove. It can be concluded that natural extracts of clove, cardamom, cinnamon, rosemary, ginger and garlic differ in their inhibitory activity against Escherichia coli O157:H7, Escherichia coli NRRL and Salmonella sp.so, these natural extract could be considered as natural food preservatives against pathogenic toxic bacteria and generally recognized as safe.
(2012). In Vitro ANTIBACTERIAL EFFECT OF SOME NATURAL PLANT EXTRACTS AGAINST Escherichia coli. Journal of Productivity and Development, 17(3), 367-384. doi: 10.21608/jpd.2012.42476
MLA
. "In Vitro ANTIBACTERIAL EFFECT OF SOME NATURAL PLANT EXTRACTS AGAINST Escherichia coli", Journal of Productivity and Development, 17, 3, 2012, 367-384. doi: 10.21608/jpd.2012.42476
HARVARD
(2012). 'In Vitro ANTIBACTERIAL EFFECT OF SOME NATURAL PLANT EXTRACTS AGAINST Escherichia coli', Journal of Productivity and Development, 17(3), pp. 367-384. doi: 10.21608/jpd.2012.42476
VANCOUVER
In Vitro ANTIBACTERIAL EFFECT OF SOME NATURAL PLANT EXTRACTS AGAINST Escherichia coli. Journal of Productivity and Development, 2012; 17(3): 367-384. doi: 10.21608/jpd.2012.42476
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