Zobrazeno 1 - 10
of 144
pro vyhledávání: '"Velizar Gochev"'
Autor:
Vesselin Baev, Ivan Iliev, Elena Apostolova, Mariyana Gozmanova, Yana Hristova, Yanitsa Ilieva, Galina Yahubyan, Velizar Gochev
Publikováno v:
Current Issues in Molecular Biology, Vol 46, Iss 9, Pp 9359-9375 (2024)
The genus Streptomyces is renowned not only for its natural antibiotic production but also for its abundant chitinolytic enzymes, which break down stubborn chitin into chitooligosaccharides. Despite this, there have been limited studies utilizing who
Externí odkaz:
https://doaj.org/article/011999f6a0d84272afaa56d35d9ee28e
Autor:
Roumen Zlatev, Margarita Stoytcheva, Velizar Gochev, Zdravka Velkova, Benjamín Valdez, Gisela Montero
Publikováno v:
Biotechnology & Biotechnological Equipment, Vol 35, Iss 1, Pp 323-332 (2021)
A low-cost disposable lipase activity sensor was developed and characterized overcoming the main drawbacks of the already existing disposable ones: insufficient reproducibility to be applied for automatic lipase activity quantification and complicate
Externí odkaz:
https://doaj.org/article/3b74bb83613349d4989a9ffdb80dabef
Publikováno v:
Biotechnology & Biotechnological Equipment, Vol 35, Iss 1, Pp 953-963 (2021)
Pretreated waste Streptomyces fradiae biomass was used as biosorbent to remove tetracycline (TC) from model aqueous solutions. The biosorption study was conducted in a batch system to evaluate the impact of initial pH, biosorbent dosage, initial TC c
Externí odkaz:
https://doaj.org/article/b95204c84a6740f5a3db4d26db680161
Autor:
Ivan Iliev, Mariana Marhova, Sonya Kostadinova, Velizar Gochev, Marinela Tsankova, Angelina Ivanova, Galina Yahubyan, Vesselin Baev
Publikováno v:
Biotechnology & Biotechnological Equipment, Vol 33, Iss 1, Pp 1721-1732 (2019)
Microbial communities drive the biogeochemical cycles in wetlands and provide a number of ecosystem services. They underpin soil function, and are easily impacted by anthropogenic pressure. This study examined the bacterial microbiome in the natural
Externí odkaz:
https://doaj.org/article/20997cb436584f7eb50f287861a56bdb
Autor:
Kostadinka Todorova, Zdravka Velkova, Margarita Stoytcheva, Gergana Kirova, Sonia Kostadinova, Velizar Gochev
Publikováno v:
Biotechnology & Biotechnological Equipment, Vol 33, Iss 1, Pp 730-738 (2019)
Waste biomass from Bacillus cereus immobilized in sodium alginate and co-immobilized with activated carbon or with bentonite into alginate gel was studied for Pb(II), Cd(II) and Hg(II) removal from aqueous solutions. The composite biosorbent consisti
Externí odkaz:
https://doaj.org/article/f082b8d2076d4a4997d28c9ef274bad6
Autor:
Galina Stefanova, Tanya Girova, Velizar Gochev, Magdalena Stoyanova, Zhana Petkova, Albena Stoyanova, Valtcho D. Zheljazkov
Publikováno v:
Heliyon, Vol 6, Iss 12, Pp e05491- (2020)
Laurel (Laurus nobilis L.) is a plant species from Lauraceae family, and is native to the Mediterranean region. The goal of this study was to compare chemical composition of laurel leaves and antibacterial activity of its essential oil (EO) from wild
Externí odkaz:
https://doaj.org/article/d8077e690e2240a2a6b5477c6f60f9cf
Publikováno v:
Biotechnology & Biotechnological Equipment, Vol 32, Iss 1, Pp 213-220 (2018)
An electrochemical organophosphorus hydrolase-based sensor for direct organophosphorus pesticides determination was developed, analytically characterized and applied for paraoxon quantification. The biosensing platform was constructed by one-step ele
Externí odkaz:
https://doaj.org/article/72176d4521f74ce9aa02ff124861902a
A Zirconia‐Nanoparticles‐Modified Carbon Paste Electrode for Voltammetric Determination of Ibuprofen
Autor:
Margarita Stoytcheva, Roumen Zlatev, Zdravka Velkova, Velizar Gochev, Benjamin Valdez, Mario Curiel
Publikováno v:
ChemistrySelect. 7
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::632d765d32e73f555cf575e8760143e1
https://doi.org/10.1002/slct.202203950
https://doi.org/10.1002/slct.202203950
Autor:
ANDREY MARCHEV, IVAN IVANOV, PETKO DENEV, MILENA NIKOLOVA, VELIZAR GOCHEV, ALBENA STOYANOVA, ATANAS PAVLOV, VASIL GEORGIEV
Publikováno v:
Journal of BioScience and Biotechnology, Vol 4, Iss 2, Pp 219-229 (2015)
Chemical composition and bioactivity of essential oil from Salvia tomentosa Mill. natively grown in Bulgaria were investigated. GC-MS analysis identified 60 compounds which represented 98% of the oil constituents. The prevalent constituents were mono
Externí odkaz:
https://doaj.org/article/1079bf8b60914208a03c5167679629f1
Autor:
Vasil Georgiev, Anthony Ananga, Ivayla Dincheva, Ilian Badjakov, Velizar Gochev, Violeta Tsolova
Publikováno v:
Molecules, Vol 24, Iss 18, p 3355 (2019)
Essential oils and hydrosols of two cultivars of muscadine grapes (Muscadinia rotundifolia (Michx.) Small.) were obtained by hydro-distillation of flowers and berry skins. Twenty-three volatile compounds were identified in essential oils from the mus
Externí odkaz:
https://doaj.org/article/e81a8b5ae23c43d39f18280db4da2483