Title of article :
Isolation, Characterization, and Quantification of Bacteria from African Sausages Sold in Nairobi County, Kenya
Author/Authors :
Karoki, W. H. Department of Veterinary Pathology - Microbiology and Parasitology - University of Nairobi - P.O. Box 29053-00625 - Nairobi, Kenya , Karanja, D. N. Department of Veterinary Pathology - Microbiology and Parasitology - University of Nairobi - P.O. Box 29053-00625 - Nairobi, Kenya , Bebora, L. C. Department of Veterinary Pathology - Microbiology and Parasitology - University of Nairobi - P.O. Box 29053-00625 - Nairobi, Kenya , Njagi, L. W. Department of Veterinary Pathology - Microbiology and Parasitology - University of Nairobi - P.O. Box 29053-00625 - Nairobi, Kenya
Abstract :
African sausages are local popular delicacies in Kenya. Demand for these sausages has resulted in this delicacy’s vendors being
on the increase. However, health risk posed to unsuspecting consumers of African sausages sold in informal, unhygienic make
shif road-side kiosks in major cities of Kenya is largely unknown. A descriptive study was designed to isolate, characterize and
quantify bacteria from African sausages sold in Nairobi County. A total of hundred (100) African sausages (62 roasted and 38
nonroasted) were conveniently collected from three meat eatery points of Westlands, Kangemi slum, and Pangani estates. Five
genera of bacteria, namely, Staphylococcus spp. at 50.4%, Bacillus spp. at 19.5%, Streptococcus spp. 9.8%, Proteus spp. 2.4%, and E.
coli spp. at 1.6%, were isolated from 80 African sausage samples. Te total aerobic bacterial count range was between 1.0-9.9x101 and
1.0-9.9x107 log cfu/g with 37 samples having total aerobic bacterial count of between 1.0-9.9 x104 and 1.0-9.9 x107 log cfu/g. Tere
was no signifcant diference (p>0.05) in distribution of isolates and total aerobic bacterial count across geographical sites studied
among the roasted and nonroasted African sausages. Tis study has demonstrated presence of bacteria in African sausages which
are potentially zoonotic to humans. Comprehensive study is needed to sample more eatery meat points in Nairobi and other areas
in order to demonstrate pathogenic attributes of these isolates and establish the respective total aerobic bacterial count. Tere is
also need to establish the sources of bacteria due to high total aerobic bacterial count determined in the current study.
Keywords :
Isolation , Characterization , Quantification , Bacteria , African Sausages Sold , Nairobi County , Kenya
Journal title :
International Journal of Food Science