Study of the correlation between the content of biocomponents with antimicrobial and fungicidal activity of representatives of the genus Allium L. depending on the height of growth

Purpose of the work. To evaluate the correlation between the content of total polyphenols and antioxidant capacity with the antimicrobial and fungicidal effect of plant extracts, depending on natural and environmental conditions.

Materials and methods. The antimicrobial activity of the obtained extracts was studied against four types of standard (reference) microorganisms: S. aureus, E. coli, Ps. aeruginosa and Kl.pneumoniae. The study of antifungal properties was carried out in relation to the reference strain of C. albicans. For statistical processing of the results obtained, the application package Statistica 10.0 (Statsoft, USA) was used.

Research results. Two species of wild widespread onions were studied - A. oshaninii O. Fedtsch. and A. suworowii Regel, growing at various altitudes. It has been established that the accumulation of the biocomponents we studied is approximately the same in all parts, regardless of the location and height of growth. With the same content of total polyphenols and total antioxidant activity in the bulbs, plants collected at different altitudes differed markedly in their ability to inhibit the growth of the reference strain of S. aureus. With the same value, the indicators of biocomponents in bulbs, plants collected at altitudes of 1240 - 1260 m and altitudes of 1400 m showed a fairly high degree of bactericidal activity. There is no correlation between the content of biocomponents with antimicrobial and fungicidal activity depending on the height and location of collection of the studied raw materials.

Conclusions. In some cases, direct correlations of varying strength can be traced between the content of polyphenols, antioxidant abilities, antimicrobial and fungicidal properties. There is no relationship between the content of biocomponents with antimicrobial and fungicidal activity depending on the height of growth of the raw material.

1. Shirshova T.I. [et al] / Essential micronutrients - components of antioxidant protection in some species of the genus Allium // Vegetables of Russia. –2019. – No. 1. – P.68–79.

2. National strategy and action plan for the of biodiversity of the Republic of Tajikistan until 2020 [Electronic resource] - Dushanbe, 2016. – pp. 63-70.

3. Khalimov A. / Medicinal plants of Tajikistan // Forestry. - Dushanbe, –2015. –No. 1(03). –P.19-21.

4. Beknazarova Kh. A. / Introduction of rare and endangered plant species in the Pamir Botanical Garden. Author’s abstract. dis. Ph.D. biol. // Dushanbe, 202124c.

5. Polito F [et al]. / Chemical Composition and Agronomic Traits of Allium sativum and Allium ampeloprasum Leaves and Bulbs and Their Action against Listeria monocytogenes and Other Food Pathogens // Foods. –2022, –Vol.11, 995. https://doi.org/10.3390/foods11070995

6. Sharma Sh. / Investigations on the Biological Activity of Allium sativum Agglutinin (ASA) Isolated from Garlic / Sh. Sharma, D.D. Singh // Protein & Peptide Letters. –2022. –Vol.29, №6, –P.555 – 566. DOI: 10.2174/0929866529999220509122720

7. Narashans A.S. / Antimicrobial assessment of polyphenolic extracts from onion (Allium cepa L.) skin of fifteen cultivars by sonication-assisted extraction method // Heliyon. –2020. –№ 605478. –P.1-9.