Production and characterization of xylanases of a Bacillus strain isolated from soil

Avcioglu, B
Eyupoglu, B
Bakir, U
Xylanase production was performed by growing a Bacillus isolate on agricultural by-products, wheat straw, wheat bran, corn cobs and cotton bagasse. A maximum xylanase activity of 180 U/ml was obtained together with a cellulase activity of 0.03 U/ml on 4 (w/v) corn cobs. Electrophoretic analysis showed the presence of three endo-beta-1, 4-xylanases having molecular weights of about 22, 23 and 40 kDa. Xylanolytic activity was stable up to 50degreesC in the pH range of 4.5-10 and the highest activity was observed at 70degreesC and pH 6.5.


Distillers' dried grains with solubles (DDGS) and its potential as fermentation feedstock
Iram, Attia; Çekmecelioğlu, Deniz; Demirci, Ali (Springer Science and Business Media LLC, 2020-07-01)
Distillers' dried grain with solubles (DDGS) is a byproduct of bioethanol fermentation, which uses the dry milling technology for starch-rich grains such as corn, wheat, and barley. The current interest in bioethanol is increasing due to the need for renewable liquid fuels specifically in the transportation sector. Since DDGS is rich in crude protein, fat, fiber, vitamins, and minerals, it is currently used as aquaculture, livestock, and poultry feeds. In recent years, DDGS has been used as feedstock in the...
AKDOGAN, H; OZILGEN, M (Elsevier BV, 1992-02-01)
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Hamamcı, Haluk (1988-07-01)
In ethanol production with immobilized yeast a major problem is the provision of nutrients to these highly concentrated cells. O2 being one of the nutrients of utmost importance to yeast cells, was fed into a column packed with beads with a cell loading of more than 40 g/l. Since addition of large volume of air or O2 to a cylindrical column reactor would aggravate the problems of pressure build up and channelling caused by the evolving CO2 gas, a tapered-column reactor and pulsed flow of oxygen gas was used...
Investigation of the role of glutathione S-transferase isozymes in pyrethroid resistance of Helicoverpa armigera in Turkey
Konus, Metin; Ugurlu, Sakine; İşcan, Mesude (2009-09-13)
Helicoverpa armigera, cotton bollworm, is one of the insects causing severe yield loss of economically important crops including cotton, legumes and vegetables. It has developed resistance against the pyrethroid insecticides that have been introduced into market. Resistance against pyrethroids have been reported in H. armigera populations at various parts of the world, however, except 1-chloro-2,4-dinitrobenzene substrate (CDNB), almost no any other substrates used for analysis of the role of glutathione S-...
Co-production of xylanase and itaconic acid by aspergillus terreus nrrl 1960 on agricultural biomass and biochemical characterization of xylanase
Kocabaş, Aytaç; Bakır, Ufuk; Department of Biotechnology (2010)
Production of xylanase and itaconic acid (IA) from Aspergillus terreus NRRL 1960 from agricultural residues was investigated in this study. Two different media were tested and the medium having itaconic acid inducing capacity was chosen for further studies due to its high xylanase and IA production capacity. The best xylan concentration was found as 2% (w/v). Addition of commercial xylanase to production culture resulted in higher initial simple sugar concentration which increased IA production slightly but...
Citation Formats
B. Avcioglu, B. Eyupoglu, and U. Bakir, “Production and characterization of xylanases of a Bacillus strain isolated from soil,” WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY, pp. 65–68, 2005, Accessed: 00, 2020. [Online]. Available: