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ISSN 2410-7751 (Print)
ISSN 2410-776X (Online)

cover biotech acta general

Biotechnologia Acta Т. 18, No. 1, 2025
P. 38-43 , Bibliography 32, Engl.
UDC: 579.6:579.864.1
doi: https://doi.org/10.15407/biotech18.01.038

Full text: (PDF, in English)

THE PROBIOTIC PROPERTIES OF Lactiplantibacillus plantarum ISOLATED FROM PLANT MATERIAL

D.S. Holubchyk1, O.M. Dugan1, S.G. Danylenko2, A.D Khablenko1, 2, O.I. Yalovenko 1

1National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”
2Institute of Food Resources of the National Academy of Agrarian Sciences of Ukraine

Aim. To identify and study the probiotic properties of a typical representative of lactic acid bacteria isolated from maize sourdough.

Methods. The sourdough was prepared by mixing flour with water, followed by incubation for 24 hours. The species identity of L.plantarum was determined based on phenotypic characteristics. Stress resistance was assessed by evaluating cell viability after exposure to artificial saliva, low-pH saline solution, and a mixture of bile and simulated duodenal juice. Antibiotic susceptibility was determined using the disk diffusion method with reference values, while autoaggregation ability was evaluated by cell sedimentation through centrifugation and absorbance measurement using a spectrophotometric method.

Results. The isolate was identified as L.plantarum. Its survival rates under simulated conditions of the oral cavity, stomach, and duodenum were 97.13±1.12%, 95.06±0.52%, and 91.67±1.66%, respectively. The strain was sensitive to erythromycin, ampicillin, and chloramphenicol, moderately sensitive to streptomycin and tetracycline, and resistant to benzylpenicillin and kanamycin. Autoaggregation levels after 2 and 24 hours were 6.88±0.1% and 41.83±0.4%, respectively.

Conclusions. L/plantarum isolated from maize sourdough demonstrated highstress resistance, sensitivity to several antibiotics (although resistance to kanamycin and benzylpenicillin requires further investigation), and sufficient autoaggregation capacity for a probiotic strain.

Key words: probiotics, lactic acid bacteria, L.plantarum, maize, gastrointestinal tract survival, antibiotic resistance, autoaggregation.

© Palladin Institute of Biochemistry of National Academy of Sciences of Ukraine, 2025