Study on biological characteristics of lactic acid bacteria from African ostrich

doi:10.14088/j.cnki.issn0439-8114.2022.08.020

Abstract

Abstract: To provide candidate strains for the preparation of probiotics, the growth characteristics, acid production performance, acid resistance, bile salt resistance and drug resistance of 3 strains of lactic acid bacteria in the feces of African ostrich （Struthio camelus） were studied. The results showed that the three strains of lactic acid bacteria （M1, M2, M3） isolated from African ostrich feces entered the logarithmic growth phase after 6 h of culture, reached the stable phase after 14 h, and the pH of the bacterial solution was stable at 4.92 after 24 h. Among them, M1 has better acid resistance; M2 and M3 have higher resistance to bile salts. The three strains of lactic acid bacteria were not sensitive to streptomycin, kanamycin and gentamicin, but were resistant to tetracycline and ofloxacin. The three strains have good biological characteristics and can be used in animal microecological preparations.

Key words: Struthio camelus, lactic acid bacteria, acid resistance, bile salt resistance, drug resistance

CLC Number:

S829.9

SUN Qing, WANG Jia-xiang, LI Peng, XIE Yang, ZHOU Shi-qin, WU Yan. Study on biological characteristics of lactic acid bacteria from African ostrich[J]. HUBEI AGRICULTURAL SCIENCES, 2022, 61(8): 102-104.

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