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7th Edition of

International Nutrition Research Conference

March 27-29, 2025 | Singapore

Nutri 2025

Characterization of isolated strains of microorganisms from mineral, mountain and spring waters from France, Italy, England, South Korea, Japan, Netherlands, Austria, Spain and Bulgaria

Speaker at International Nutrition Research Conference 2025 - Nedyalka Valcheva
Vocational High School, Bulgaria
Title : Characterization of isolated strains of microorganisms from mineral, mountain and spring waters from France, Italy, England, South Korea, Japan, Netherlands, Austria, Spain and Bulgaria

Abstract:

The aim of the present work is to isolate, identify and investigate the species of bacteria from healing, mountain and spring waters in the area of ??Paris, France, Rome, Italy, London, England, Busan, South Korea, Tokyo, Japan, Amsterdam, Holland, Vienna and in Bulgaria. 127 bacterial strains were isolated and their colonial and morphological characteristics were determined and the study strains were identified. The data show that the isolated 9 strains from the hypothermal healing spring waters in the Paris area, France were identified as N. Valcheva - Lisinibacillus pakistanensis, Serratia marcescens (four strains), Staphylococcus hominis, Staphylococcus haemoliticus, Bacillus pumilus and Bacillus cereus. The isolated strains from thermal healing springs in Saturnia, Tuscany region and Fontana di Trevi in ??Rome, Italy were identified as N. Valcheva - Tiobacillus Ferrooxidans, Staphylococcus cohnii, from a hypothermal spring in the London area as N. Valcheva - Aeromonas caviae, Pseudomonas chlororaphis, from a mountain spring in the area of ??Busan, South Korea, was identified as N. Valcheva - Bacillus safensis, Staphylococcus cohnii, Pseudomonas chlororaphis, Staphylococcus cohnii. From a mountain geothermal spring in the area of ??Tokyo, Japan, strains were identified as N. Valcheva - Bacillus safensis, Phellodendron chinense, Aeromonas caviae, Pseudomonas japonica. The strains identified in the Amsterdam, Netherlands area were identified as N.Valcheva&A.Atanasova - Aeromonas viridans, N.Valcheva&V.P.Panteleev - P. japonica, N.Valcheva&V.V. Panteleev - Aeromonas salmonicida, N.Valcheva&A.V. Panteleev - Aeromonas caviae, N.Valcheva&L.A.V. Panteleeva - Phellodendrom chinense. Sulfur bacteria of the species N. Valcheva - Chlorobium chlorochromatii were identified from the healing springs in the region of  Baden and Vienna, Austria. The strains from Bulgaria were identified from 100 hypothermal, thermal and common springs from 11 regions and belong to the following 14 genera: N. Valcheva - Bacillus, Brevibacillus, Geobacillus, Aeromonas, Klebsiella, Pseudomonas, Staphylococcus, Stenotrophomonas, Serratia, Nocardia, Trichosporon, Azoarens , Lisinbacillus, Rhodococci. The difference in the type of strains identified can be explained by the influence of the composition of the water, the type of soil and rocks through which it passes, the temperature, the pH of the environment and the different geographical location.

Biography:

Nedyalka Valcheva has an extensive background in food technologies and microbiology, with a career spanning several decades. She began her academic journey in 1990, completing a Master's degree program in Technology of Vegetable, Food, and Flavor Products at the University of Food Technologies in Plovdiv, Bulgaria. From 1990 to 2016, she served as a teacher at the Vocational High School of Chemical and Food Technologies "Prof. Asen Zlatarov" in Dimitrovgrad, Bulgaria.

In 2014, Valcheva earned a Ph.D. from the University of Food Technologies in Plovdiv, based on her dissertation titled "Microflora of Healing and Spring Waters in the Haskovo and Stara Zagora Regions." Subsequently, in 2016, she took on the role of a senior expert and organizer in the Department of Biochemistry, Microbiology, and Physics at Trakia University in Stara Zagora, Bulgaria.

Her research pursuits continued, culminating in 2023 with a D.Sc. degree from the Institute of Cryobiology and Food Technologies, Agricultural Academy, Sofia, Bulgaria. Her dissertation focused on "Physical, Chemical, and Microbiological Characteristics of Mineral, Mountain, and Spring Waters from Bulgaria, and the Biological Properties of Identified Microorganisms."

In 2024, Valcheva returned to teaching at the Vocational High School "Prof. Asen Zlatarov, PhD." in Dimitrovgrad, Bulgaria, demonstrating her ongoing dedication to education and scientific advancement.

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