Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Veselin Stanchev"'
Autor:
VELIZAR GOCHEV, TANYA GIROVA, IVANKA STOILOVA, TEODORA ATANASOVA, NENO NENOV, VESELIN STANCHEV, ALBENA STOYANOVA
Publikováno v:
Journal of BioScience and Biotechnology, Vol 1, Iss 2, Pp 135-139 (2012)
The chemical composition of extract from the seeds of cardamom (Elettaria cardamomum (L.) Maton, obtained by extraction with tetrafluoroethane was analyzed using GC and GC/MS. The major compounds (concentration higher than 3%) of extract were: terpin
Externí odkaz:
https://doaj.org/article/b7e94c8cc11b4dd2af6489d9faf4928d
Publikováno v:
Food Technology and Biotechnology, Vol 46, Iss 3, Pp 328-334 (2008)
The process of producing cyclodextrins from starch with cyclodextrin glucanotransferase from Bacillus megaterium has been studied. The effect of starch and enzyme concentrations was evaluated using optimal composite designs and the response surface m
Externí odkaz:
https://doaj.org/article/95de9b8ca40a4f2b899f0f572f7e77d7
Publikováno v:
International Journal of Pharmacognosy and Phytochemical Research. 9
In the current study the phytochemical profile of 70% ethanol extract of Ziziphus jujubа (Rhamnaceae), cultivated in Bulgaria has been investigated. The fruit extract contained numerous phytochemicals, such as triterpenes, phenolic acids and flavono
Autor:
Veselin Stanchev, Boriana Zhekova
Publikováno v:
Polish Journal of Microbiology. 60:113-118
The effect of the reaction conditions (substrate concentration, enzyme dosage, and pH) on cyclodextrin production by cyclodextrin glucanotransferase from Bacillus megaterium was investigated by applying mathematical modeling methods. Adequate models
Autor:
Tanya Girova, Teodora Atanasova, Nenko Nenov, Ivanka Stoilova, Albena Stoyanova, Velizar Gochev, Veselin Stanchev
Publikováno v:
Journal of Essential Oil Bearing Plants. 14:67-75
The chemical composition of extract from the barks of cinnamon (Cinnamomum zeylanicum Nees) produced by extraction with 1,1,1,2-tetrafluoroethane was analyzed using GC and GC-MS. The main compounds (concentration higher than 3 %) of extract were: cin
Publikováno v:
Advances in Bioscience and Biotechnology. :208-215
A low-cost process for the production of laccases is necessary for a sustainable enzymatic wastewater treatment. Therefore, it is necessary to establish an easy and low-cost procedure for the production of laccase. In the present study the properties
Publikováno v:
Polish Journal of Microbiology. 59:179-183
The composition of a synthetic culture medium for levorin biosynthesis by Streptomyces levoris 99/23 was optimised using mathematical modelling methods. The optimal concentrations of the medium components were established by means of an optimum compo
Publikováno v:
World Journal of Microbiology and Biotechnology. 25:1043-1049
Two methods for increasing β-cyclodextrin yield, achieved with cyclodextrin glucanotransferase from Bacillus megaterium were investigated. A membrane process was performed, allowing a reuse of the enzyme. A process for simultaneous production and is
Publikováno v:
Journal of Hazardous Materials. 154:396-402
The biodegradation process of high catechol concentrations by Aspergillus awamori was investigated. The values of the kinetic constants for a model of specific growth rate at different initial conditions were determined. At 1.0 g/L catechol concentra
Publikováno v:
Process Biochemistry. 42:1655-1659
In recent decades, the production of palatinose has aroused great interest since this structural isomer of sucrose has a promising potential. Using immobilized in a hollow-fibre membrane reactor Serratia plymuthica cells, a complete conversion of con