Affiliation:
1. Saint Petersburg State Chemical Pharmaceutical University
2. Scientific Research Institute of the Bakery Industry
Abstract
A biotesting technique is described that provides for periodic (every 2 hours) recording of changes in pH, redox potential, and electrical conductivity of a liquid culture medium incubated in the presence and in the absence of viable test microorganisms (TM) and test samples (TS). The results of a comparative analysis using this technique of antibiotic activity against Staphylococcus aureus of different concentrations of «essential oils» obtained from 10 types of plant raw materials are presented. Based on this, we can conclude the following. Using the presented methodology, it is possible to assess the effect on the dynamics of the vital activity of TM of samples of various pharmaceutical, cosmetic, food, feed and other products, much more quickly, objectively and informatively than using standard visual methods of microbiological testing. The initial antibiotic activity of TS in most cases was greater than their prolonged antibiotic activity. At the same time, the mid-term (in terms of the time of interaction of TS with TM) antibiotic activity of TS was usually intermediate in value between their initial and prolonged biological activity.
Publisher
Russian Register of Potentially Hazardous Chemical and Biological Substances
Reference18 articles.
1. Sutherland J., Miles M., Hedderley D., Li J., Devoy S., Sutton K., Lauren D. Invitro effects of food extracts on selected probiotic and pathogenic bacteria. International Journal of Food Sciences and Nutrition. 2009; 60(8): 717-27. https://doi.org/10.3109/09637480802165650
2. Das S., Anjeza C., Mandal S. Synergistic or additive antimicrobial activities of Indian spice and herbal extracts against pathogenic, probiotic and food-spoiler microorganisms. International Food Research Journal. 2012; 19(3): 1185-91.
3. Al-Zubairi A., Al-Mamary M.A., Al-Ghasani E. The antibacterial, antifungal, and antioxidant activities of essential oil from different aromatic plants. Global Advanced Research Journal of Medicine and Medical Sciences. 2017; 6(9): 224-33. https://garj.org/garjmms
4. Rodino S., Butu M. Functional and Medicinal Beverages. Volume 11: The Science of Beverages. Academic Press. 2019: 73-108. https://doi.org/10.1016/B978-0-12-816397-9.00003-0
5. Bakkali F., Averbeck S., Averbeck D., Idaomar M. Biological effects of essential oils - a review. Food and chemical toxicology. 2008; 46(2): 446-75. https://doi.org/10.1016/j.fct.2007.09.106