ORIGINAL PAPER
 
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ABSTRACT
Yak (Bos grunniens) milk and its associated products are being used in high altitudes of Northern Pakistan. The aim of the study was to elucidate the diversity of lactic acid bacteria (LAB) isolated from raw yak milk. In total, 88 isolates were characterized according to their phenotypic, physiological and biochemical properties. The abundance of genera from the highest to the lowest was lactobacilli (56%) followed by enterococci (36%) and lactococci (8%). Among these isolates, 9 different species were recognized by studying their biochemical characterization with the use of API 50 CHL systems. The dominance of species included Lactobacillus paracasei subsp. tolerans (19%) followed by Lactobacillus plantarum and Enterococcus durans (17%), Enterococcus faecium (11%), Lactobacillus casei (9%), Enterococcus hirae and Lactococcus lactis (8%), Lactobacillus delbrueckii subsp. bulgaricus (7%) and Lactobacillus sakei (3%). Identification of 30 representative strains was further confirmed by 16S rRNA gene sequence analysis. So, a foundation for developing local starter cultures of LAB for the production of fermented products from yak milk is provided.
ACKNOWLEDGEMENTS
The authors are thankful for the financial support of the Higher Education Commission of Pakistan for the current research project under the HEC Indigenous 5000 PhD Fellowship Programme Phase II, Batch-I (PIN: 112-21766-2AVI-336).
CONFLICT OF INTEREST
The authors declare that there is no conflict of interest.
 
REFERENCES (31)
1.
Abdelgadir W.S., Hamad S.H., Møller P.L., Jakobsen M., 2001.Characterisation of the dominant microbiota of Sudanese fermented milk Rob. Int. Dairy J. 11, 63–70, https://doi.org/10.1016/S0958-....
 
2.
Airidengcaicike, Chen X., Du X., Wang W., Zhang J., Sun Z., Liu W., Li L., Sun T., Zhang H., 2010. Isolation and identification of cultivable lactic acid bacteria in traditional fermented milk of Tibet in China. Int. J. Dairy Technol. 63, https://doi.org/10.1111/j.1471....
 
3.
Ao X., Zhang X., Zhang X., Shi L., Zhao K., Yu J., Dong L., Cao Y., Cai Y., 2012. Identification of lactic acid bacteria in traditional fermented yak milk and evaluation of their application in fermented milk products. J. Dairy Sci. 95, 1073–1084, https://doi.org/10.3168/jds.20....
 
4.
Bao Q.H., Liu W., Yu J. et al., 2012. Isolation and identification of cultivable lactic acid bacteria in traditional yak milk products of Gansu Province in China. J. Gen. Appl. Microbiol. 58, 95–105, https://doi.org/10.2323/jgam.5....
 
5.
Blaimont B., Charlier J., Wauters G., 1995. Comparative distribution of Enterococcus species in faeces and clinical samples. Microb. Ecol. Health Dis. 8, 87–92, https://doi.org/10.3109/089106....
 
6.
Chammas G.I., Saliba R., Corrieu G., Béal C., 2006. Characterisation of lactic acid bacteria isolated from fermented milk “laban”. Int. J. Food Microbiol. 110, 52–61, https://doi.org/10.1016/j.ijfo....
 
7.
Coeuret V., Dubernet S., Bernardeau M., Gueguen M., Vernoux J.P., 2003. Isolation, characterization and identification of lactobacillifocusing mainly on cheeses and other dairy products. Lait 83, 269–306, https://doi.org/10.1051/lait:2....
 
8.
Dewan S., Tamang J.P., 2007. Dominant lactic acid bacteria and their technological properties isolated from the Himalayan ethnic fermented milk products. Antonie Van Leeuwenhoek 92, 343–352, https://doi.org/10.1007/s10482....
 
9.
Gardiner G.E., Ross R.P., Wallace J.M., Scanlan F.P., Jägers P.P., Fitzgerald G.F., Collins J.K., Stanton C., 1999. Influence of a probiotic adjunct culture of Enterococcus faeciumon the quality of cheddar cheese. J. Agric. Food Chem. 47, 4907–4916, https://doi.org/10.1021/jf9902....
 
10.
Gran H.M., Gadaga H.T., Narvhus J.A., 2003. Utilization of various starter cultures in the production of Amasi, a Zimbabwean naturally fermented raw milk product. Int. J. Food Microbiol. 88, 19–28, https://doi.org/10.1016/S0168-....
 
11.
Hall T., 1999. BioEdit: a user-friendly biological sequence alignment editor and analysis program for Windows 95/98/NT. Nucl. Acids Symp. Ser. 41, 95–98.
 
12.
Hayes J.R., English L.L., Carter P.J., Proescholdt T., Lee K.Y., Wagner D.D., White D.G., 2003. Prevalence and antimicrobial resistance of Enterococcus species isolated from retail meats. Appl. Environ. Microbiol. 69, 7153–7160, https://doi.org/10.1128/AEM.69....
 
13.
Jasra A.W., Hashmi M.M., Waqar K., Ali M., 2016. Traditional yak herding in high-altitude areas of Gilgit-Baltistan, Pakistan: transboundary and biodiversity conservation challenges. In: W. Ning, Y. Shaoliang, S. Joshi, N. Bisht (Editors). Yak on the Move; Transboundary Challenges and Opportunities for Yak Raising in a Changing Hindu Kush Himalayan Region. International Centre for Integrated Mountain Development (ICIMOD). Kathmandu (Nepal), pp. 41–51.
 
14.
Kandler O., Weiss N., 1986. Genus Lactobacillus. In: P.H.A. Sneath, N.S. Mair, H.E. Sharpe and J.G. Holt (Editors). Bergey’s Manual of Systematic Bacteriology, Volume 2, 9th Edition. Williams and Wilkins. Baltimore, MD (USA), pp. 1063–1065.
 
15.
Liu W., Bao Q., Jirimutuet et al., 2012. Isolation and identification of lactic acid bacteria from Tarag in Eastern Inner Mongolia of China by 16S rRNA sequences and DGGE analysis. Microbiol. Res. 167, 110–115, https://doi.org/10.1016/j.micr....
 
16.
Luming D., Ruijun L., Zhanhuan S., Changting W., Yuhai Y., Songhe X., 2008. Feeding behaviour of yaks on spring, transitional, summer and winter pasture in the alpine region of the Qinghai-Tibetan plateau. Appl. Anim. Behav. Sci. 111, 373–390, https://doi.org/10.1016/j.appl....
 
17.
Mahmood T., Masud T., Imran M., Ahmed I., Khalid N., 2013. Selection and characterization of probiotic culture of Streptococcus thermophillus from dahi. Int. J. Food Sci. Nutr. 64, 494–501, https://doi.org/10.3109/096374....
 
18.
Marroki A., Zúñiga M., Kihal M., Pérez-Martínez G., 2011. Characterization of Lactobacillus from Algerian goat’s milk based on phenotypic, 16S rDNA sequencing and their technological properties. Braz. J. Microbiol. 42, 158–171, https://doi.org/10.1590/S1517-....
 
19.
Mathara J.M., Schillinger U., Kutima P.M., Mbugua S.K., Holzapfel W.H., 2004. Isolation, identification and characterization of the dominant microorganisms of kule naoto: the Maasai traditional fermented milk in Kenya. Int. J. Food Microbiol. 94, 269–278, https://doi.org/10.1016/j.ijfo....
 
20.
Mishra V., Prasad D.N., 2005. Application of in vitro methods for selection of Lactobacillus casei strains as potential probiotics. Int. J. Food Microbiol.103,109–115, https://doi.org/10.1016/j.ijfo....
 
21.
Ogier J.-C., Serror P., 2008. Safety assessment of dairy microorganisms: The Enterococcus genus. Int. J. Food Microbiol. 126, 291–301, https://doi.org/10.1016/j.ijfo....
 
22.
Oladipo I.C., Sanni A., Swarnakar S., 2013. Phenotypic and genomic characterization of Enterococcus species from some Nigerian fermented foods. Food Biotechnology. 27, 39–53, https://doi.org/10.1080/089054....
 
23.
Park J.-M., Shin J.-H., Lee D.-W., Song J.-C., Suh H.-J., Chang U.-J., Kim J.-M., 2010. Identification of the lactic acid bacteria in Kimchi according to initial and over-ripened fermentation using PCR and 16S rRNA gene sequence analysis. Food Sci. Biotechnol. 19, 541–546, https://doi.org/10.1007/s10068....
 
24.
Ren Y., Yang Y., Zhang D., Wang D., Zhang H., Liu W., 2017. Diversity analysis and quantification of lactic acid bacteria in traditionally fermented yaks’ milk products from Tibet. Food Biotechnol. 31, 1–19, https://doi.org/10.1080/089054....
 
25.
Sun Z., Chen X., Wang J. et al., 2011. Complete genome sequence of Lactobacillus delbrueckii subsp. bulgaricus strain ND02. J. Bacteriol. 193, 3426–3427, https://doi.org/10.1128/JB.050....
 
26.
Sun Z., Liu W., Gao W., Yeng M., Zhang J., Wu L., Wang J., Menghe B., Sun T., Zhang H., 2010. Identification and characterization of the dominant lactic acid bacteria from kurut: The naturally fermented yak milk in Qinghai, China. J. Gen. Appl. Microbiol. 56, 1–10, https://doi.org/10.2323/jgam.5....
 
27.
Tamura K., Stecher G., Peterson D., Filipinski A., Kumar S., 2013. MEGA6: Molecular Evolutionary Genetics Analysis version 6. Mol. Biol. Evol. 30, 2725–2729, https://doi.org.10.1093/molbev...
 
28.
Van de Casteele S., Vanheuverzwijn T., Ruyssen T., Van Assche P., Swings J., Huys G., 2006. Evaluation of culture media for selective enumeration of probiotic strains of lactobacilli and bifidobacteria in combination with yoghurt or cheese starters. Int. Dairy J. 16, 1470–1476, https://doi.org/10.1016/j.idai....
 
29.
Zagorec M., Champomier-Vergès M.-C., 2017. Lactobacillus sakei: a starter for sausage fermentation, a protective culture for meat products. Microorganisms 5, 56, https://doi.org/10.3390/microo....
 
30.
Zamfir M., Vancanneyt M., Makras L., Vaningelgem F., Lefebvre K., Pot B., Swings J., De-Vuyst L., 2006. Biodiversity of lactic acid bacteria in Romanian dairy products. Sys. Appl. Microbiol. 29, 487–495, https://doi.org/10.1016/j.syap....
 
31.
Zhang L., Yu Q., Han L., Zhang M., Yang L., Li Y.P., 2011. Evaluation of the potential probiotic properties of Lactobacillus strains isolated from traditional fermented yak milk. J. Food Agric. Environ. 9, 18–26.
 
 
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