scholarly journals Use of Chicken Feather Peptone and Sugar Beet Molasses as Low Cost Substrates for Xanthan Production by Xanthomonas campestris MO-03

Fermentation ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 9 ◽  
Author(s):  
Murat Ozdal ◽  
Esabi Başaran Kurbanoglu

Xanthan gum is one of the polysaccharides most commonly used in a broad range of industries (food, cosmetics, pharmaceutical, etc.). Agro-industrial by-products are being explored as alternative low-cost nutrients to produce xanthan gum by Xanthomonas campestris. In this study, for the production of xanthan gum, sugar beet molasses and chicken feather peptone (CFP) were used as carbon and nitrogen sources, respectively. X. campestris produced the highest level of xanthan gum (20.5 g/L) at 60 h of cultivation using sugar beet molasses (40 g/L total sugar) supplemented with CFP (4 g/L) at pH 7, 200 rpm, and 30 °C. The pyruvic acid content of the xanthan gums increased with increasing CFP concentration. Compared with commercial organic nitrogen sources (tryptone, bacto peptone, and yeast extract), the highest production of xanthan gum was obtained with CFP. Moreover, among the tested peptones, the highest pyruvic acid (3.2%, w/w) content was obtained from CFP. The usage of sugar beet molasses and CFP as substrates in industries would enable a cost-efficient commercial production. These results suggest that sugar beet molasses and CFP can be used as available low-cost substrates for xanthan gum production by X. campestris.


2010 ◽  
Vol 34 (2) ◽  
pp. 316-322 ◽  
Author(s):  
A. Moosavi ◽  
A. Karbassi


1987 ◽  
Vol 18 (2) ◽  
pp. 131-142 ◽  
Author(s):  
Demetrios Karamitros


2000 ◽  
Vol 882 (1-2) ◽  
pp. 329-334 ◽  
Author(s):  
Roland Ulber ◽  
Robert Faurie ◽  
Peter Sosnitza ◽  
Lutz Fischer ◽  
Egbert Stärk ◽  
...  


2018 ◽  
Vol 125 (1) ◽  
pp. 134-142 ◽  
Author(s):  
Vesna M. Vučurović ◽  
Vladimir S. Puškaš ◽  
Uroš D. Miljić


scholarly journals The effect of changes in opportunity costs and prices of some agricultural products such as sugar beet, corn,wheat etc. used for bioethanol production on the cost of bioethanol production is not adequately known in Turkey.. Therefore, it was aimed to determine the bioethanol production cost items and unit production costs and also to put forth the effects of variations in raw material prices on cost of bioethanol.. The research data were collected via personal interviews from active bioethanol plants in Turkey. The results of previous studies and documents of related institutions and organizations were also used. The study followed classical cost analysis approach to calculate production cost. Scenario analysis was performed when exploring the effect of raw material prices on bioethanol production cost. Research findings showed that production cost per litre bioethanol produced from sugar beet molasses, corn, wheat and corn-wheat mixture were 2.50 TL, 2.84 TL, 2.95 and 2.84 TL, respectively. The share of raw material expenses in bioethanol cost per liter varied associated with the crops used in the process, it was 28.55% for bioethanol produced from sugar beet molasses, 44.81% for bioethanol produced from corn-wheat mixture and 44.87% bioethanol produced from corn. The research results also showed that the changes that occur in raw material prices significantly affected the bioethanol production cost and opportunity cost of crops created difficulties in biomass supply. Implementing the suitable policies and strategies and making the necessary arrangements in legislation would enhance the economic sustainability of bioethanol production in Turkey.

2017 ◽  
Vol 32 (1) ◽  
pp. 16-16
Author(s):  
Selime Canan ◽  
Vedat Ceyhan


2014 ◽  
Vol 65 ◽  
pp. 324-329 ◽  
Author(s):  
Krzysztof Urbaniec ◽  
Robert Grabarczyk


2018 ◽  
Vol 97 (4) ◽  
pp. 947-954 ◽  
Author(s):  
Miljana Djordjević ◽  
Zita Šereš ◽  
Tatjana Došenović ◽  
Dragana Šoronja‐Simović ◽  
Nikola Maravić ◽  
...  


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