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Effect of sucrose concentration on oxalic acid biosynthesis by Aspergillus niger

100%

Walaszczyk E., Gasiorek E., Podgorski W.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2017

|

tom 588

The aim of the work was to determine the influence of initial sucrose concentration in fermentation medium on oxalic acid synthesis by Aspergillus niger W78C in submerged batch culture. Cultivations were conducted in synthetic medium containing sucrose in the concentration of 100, 125, 150, 175 or 200 g·dm⁻³. As the result of the present investigation, the optimal sucrose concentration was found at the level of 125 g·dm⁻³. In medium containing this amount of carbon source, 70.2 g·dm⁻³ of oxalic acid was obtained. When substrate concentration was the highest, 200 g dm⁻³, the amount of product was only 5.2 g·dm⁻³ higher than in medium with 125 g·dm⁻³ of sucrose. Moreover, an increase of the initial sucrose concentration resulted in process time extension, an increase of citric and gluconic acids concentration and a decrease of productivity and oxalic acid yield.

2

Optimization of process parameters for maximum poly[-beta-]hydroxybutyrate [PHB] production by Bacillus thuringiensis IAM 12077

86%

Adwitiya P., Ashwini P., Avinash A. K., Badri R., Dadhe K., Ponnamma V., Shivakumar S.

Polish Journal of Microbiology

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2009

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tom 58

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nr 2

149-154

The study aimed at screening and identifying a potential poly-β-hydroxybutyrate (PHB) accumulating Bacillus strain and optimization of media parameters for increased PHB production by the strain. A Gram-positive bacterium that accumulated PHB was isolated from local garden soil of Bangalore. Based on morphological and physiological properties, and nucleotide sequence (about 1.5 kb) of its 16S rDNA it was identified as Bacillus thuringiensis IAM 12077. PHB production was found to be comparable to most of the Bacillus sp. reported to date. PHB production by this strain was dependent on nutrient limitation. Cell dry weight and PHB accumulation increased significantly under biphasic growth condition (from nutrient broth to nitrogen-deficient medium) as compared with growth in nutrient broth alone (from 0.32 g/l to 2.76 g/l cell dry weight; 24% to 43.37% PHB accumulation; 0.2 g/l to 1.2 g/l PHB production), with maximum accumulation at 24 h in nitrogen-deficient medium. Time course study of growth and PHB production by this strain in the nitrogen deficient medium showed that PHB production was associated with the stationary phase of growth. All the tested media containing different carbon and nitrogen sources supported growth and PHB production. Ultraviolet spectrum of the extracted polymer showed a characteristic peak at 235 nm.

3

Environmental influence of cultural medium on bioherbicidal activities of Pseudomonas aeruginosa C1501 on mono and dico weeds

86%

Adetunji C. O., Oloke J. K., Prasad G., Akpor O. B.

Polish Journal of Natural Sciences

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2017

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tom 32

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nr 4

Microbe producing natural herbicides are alternatives to the chemical herbicidal formulations. The effect of minerals and carbon sources were screened to select the best when combined and when apply singly during submerged fermentation. The effect of their phytotoxic metabolites was tested on Chromolaena odorata and Echinochola crus-galli. It was observed that the best combination between all the mineral was found in the combination containing manganese, zinc, bromine and iron. It gave the highest bio-herbicidal activities on the tested weeds when compared with the basal medium without any mineral amendment (P ≤ 0.05). The best carbon source screened was glucose while the best mineral screened was iron in term of showing activities on the tested weeds (P ≤ 0.05).

4

Bifidogenic and antioxidant activity of exopolysaccharides produced by Lactobacillus rhamnosus E/N cultivated on different carbon sources

86%

Polak-Berecka M., Wasko A., Szwajgier D., Choma A.

Polish Journal of Microbiology

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2013

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tom 62

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nr 2

Lactobacillus rhamnosus E/N is a probiotic bacterium, which synthesizes exopolysaccharides (EPS) with significant bifidogenic and antioxidant activities. The sugar composition of the EPSs produced depended on carbohydrates used as a carbon source in the growth media. Five Bifidobacterium strains were tested in vitro for their ability to utilize all the EPSs studied. The highest bifidogenic activity was revealed by EPSs obtained from Lactobacillus cultures supplemented with Gal, Lac, and Mal as the only carbon source, while significant antioxidant effects were observed in EPSs isolated from growth media enriched with galactose, lactose, and sucrose.

5

Can seabirds modify carbon burial in fjords?

86%

Weslawski J. M., Urbanski J., Gluchowska M., Grzelak K., Kotwicki L., Kwasniewski S., Legezynska J., Wiktor J., Wlodarska-Kowalczuk M., Zaborska A., Zajaczkowski M., Stempniewicz L.

Oceanologia

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2017

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tom 59

|

nr 4

Two high latitude fjords of Spitsbergen (Hornsund 77°N and Kongsfjorden 79°N) are regarded as being highly productive (70 g and 50 gC m−2 year−1) and having organic-rich sediments. Hornsund has more organic matter in its sediments (8%), nearly half of it of terrestrial origin, while most of that in Kongsfjorden (5%) comes from fresh, marine sources (microplankton). Analysis of the carbon sources in both fjords shows that a major difference is the much larger seabird population in Hornsund-dominated with over 100 thousands pairs of plankton feeding little auks in Hornsund versus 2 thousand pairs in Kongsfjorden, and marine food consumption estimated as 5573 tonnes of carbon in Hornsund, versus 3047 tonnes in Kongsfjorden during one month of chick feeding period. Seabird colonies supply rich ornithogenic tundra (595 tonnes of C, as against only 266 tonnes of C in the Kongsfjorden tundra). No much of the terrestrial carbon, flushed out or wind-blown to the fjord, is consumed on the seabed – a state of affairs that is reflected by the low metabolic activity of bacteria and benthos and the lower benthic biomass in Hornsund than in Kongsfjorden.

6

Cellular sources of hydrogen peroxide and iron toxicity in yeast

86%

Wisnicka R., Zgierun A., Bilinski T.

Current Topics in Biophysics

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1994

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tom 18

|

nr 2

7

Effect of carbon source on the production of lytic enzymes by filamentous fungi of the Trichoderma genus

72%

Piegza M., Szlaczka K., Laba W., Witkowska D.

Electronic Journal of Polish Agricultural Universities. Series: Biotechnology

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2014

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tom 17

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nr 2

8

Rice husk as carbon source and biofilm carrier for water denitrification

72%

Shao L., Xu Z. X., Jin W., Yin H. L.

Polish Journal of Environmental Studies

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2009

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tom 18

|

nr 4

693-699

We investigated rice husk as the sole carbon source as well as biofilm carrier in the biological denitrification of wastewater in up-flow laboratory reactors. Fast startup of the reactor and high nitrate removal efficiency was observed. The highest denitrification rate (about 0.096kg/m³·d) was achieved when flow rate and nitrate concentration were 41.4L/d and 25.0mg/L, respectively. Flow rate and nitrate concentration of the influent were observed to have a significant effect on nitrate removal efficiency. The reactor had the ability to accommodate a wide range of pH (6.5-8.5) and DO (1.5-4mg/L). A time-dependent decrease in nitrate removal efficiency was observed after 72 days of operation. And the addition of new rice husk brought about a rapid increase of nitrate removal efficiency. Results showed that rice husks can be an economical and effective carbon source for the nitrate removal process.

9

Aspergillus-fermented Jatropha curcas seed cake: proximate composition and effects on biochemical indices in Wistar rats

72%

Faoziyat S. A., Amina A. E.-I. M., Adeyemo A. A., Muhammed R. B., Sulaiman A. M., Aliyu A. O., Adeyemi O. S.

Biological Letters

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2014

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tom 51

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nr 1

10

Waste fish oil as an alternative carbon source in microbial oil production by Yarrowia lipolytica yeast

72%

Fabiszewska A., Zieniuk B., Mazurczak-Zieniuk P., Woloszynowska M., Nowak D.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2019

|

tom 599

11

Enhancement of biomass and total carotenoid content of a UV-resistant strain of Dietzia maris in response to different carbon and nitrogen sources

72%

Bakhtiyari A. S., Etemadifar Z., Borhani M. S., Zamanian N.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2021

|

tom 102

|

nr 2

12

Enhanced production of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) copolymer by endophytic Bacillus cereus RCL 02 utilizing sugarcane molasses as sole source of carbon: a statistical optimization approach

72%

Das R., Pal A., Paul A. K.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2022

|

tom 103

|

nr 3

13

FAME profiles in Pseudomonas vesicularis during catechol and phenol degradation in the presence of glucose as an additional carbon source

72%

Mrozik A., Piotrowska-Seget Z., Labuzek S.

Polish Journal of Microbiology

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2007

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tom 56

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nr 3

The aim of this study was to evaluate the impact of catechol and phenol added to culture media separately and with glucose as an additional, easily-degradable carbon source on fatty acid methyl ester (FAME) composition in Pseudomonas vesicularis. Simultaneously, the degradation rates of aromatic substrates used were investigated in single and binary substrate systems. Both catechol and phenol treatments caused changes in the distribution of tested groups of fatty acids. The most noticeable changes included an increase in degree of fatty acid saturation, the appearance of branched and disappearance of hydroxy fatty acids as compared to the control sample with glucose. Under catechol or phenol treatment sat/unsat ratio showed the values of 8.63 and 11.38, respectively, whereas in control cells it reached the value of 2.66. The high level of saturation comes from the high content of cyclopropane fatty acids in bacteria under exposure to aromatic substrates, regardless of the presence of glucose. In these treatments their content was more than 3-fold higher compared to the control. It has been demonstrated that glucose supplementation of culture media containing single aromatic substrate extended the degradation rates of catechol and phenol by P. vesicularis, caused an increase in number of cells but did not significantly change the fatty acid profiles in comparison with bacteria growing on catechol and phenol added to the media individually.

14

The effect of growth medium on the antioxidant defense of Saccharomyces cerevisiae

72%

Macierzynska E., Grzelak A., Bartosz G.

Cellular and Molecular Biology Letters

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2007

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tom 12

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nr 3

We compared the oxidation of dihydrorhodamine 123, glutathione contents and activities of superoxide dismutase (SOD) and catalase for three wild-type strains of Saccharomyces cerevisiae grown on media with different carbon sources. The rate of oxidation of dihydrorhodamine 123 was much higher in respiring cells grown on ethanol or glycerol media than in fermenting cells grown on glucose medium. The total SOD activity was highest on glycerol medium and lowest on ethanol medium, while the catalase activity was highest on glycerol medium. The sequence of glutathione content values was: glucose > ethanol > glycerol.

15

Streptomyces nigellus as a biocontrol agent of tomato damping-off disease caused by Pythium ultimum

58%

Helmy S. M., Zeinat K., Mahmoud S. A., Moataza S., Nagwa M., Amany H.

Electronic Journal of Polish Agricultural Universities. Series: Biotechnology

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2010

|

tom 13

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nr 4

16

Selekcja nowo wyizolowanych szczepów Rhizopus oryzae do wydajnej produkcji kwasu L(+) mlekowego

58%

Palys M., Targonski Z., Komon-Janczara E., Glibowska A.

Żywność Nauka Technologia Jakość

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2017

|

tom 24

|

nr 1

Celem pracy była ocena zdolności nowo wyizolowanych szczepów z rodzaju Rhizopus do produkcji kwasu mlekowego. W przypadku 20 izolatów, spośród 40 przebadanych, w filtratach pohodowlanych stwierdzono znaczące stężenia kwasu mlekowego. Były to szczepy zaliczone do gatunku Rhizopus oryzae, podczas gdy pozostałe szczepy, w tym należące do gatunku Rhizopus stolonifer, tych uzdolnień nie przejawiały. Stężenia kwasu mlekowego w filtratach były zróżnicowane w zależności od użytego szczepu grzyba oraz rodzaju źródła węgla. Najwyższe stężenie kwasu mlekowego – 74,06 g/l oznaczono w filtracie pohodowlanym szczepu Rhizopus oryzae R-42, w podłożu zawierającym 100 g/l glukozy. Największą wydajność kwasu mlekowego wynoszącą 89,4 % oraz produktywność – blisko 0,5 g/l/h uzyskano również po hodowli szczepu R. oryzae R-42 na podłożu zawierającym 50 g/l glukozy. Nieznacznie niższe wartości stwierdzono, gdy jako źródło węgla użyto mannozy lub fruktozy. Zdecydowanie niższe wartości otrzymano natomiast, gdy źródłem węgla była ksyloza lub skrobia. Spośród badanych szczepów tylko 6 było zdolnych do wzrostu i produkcji kwasu mlekowego w podłożu z sacharozą, Najlepszy szczep R. oryzae R83 charakteryzował się dużą wydajnością produkcji kwasu mlekowego wynoszącą blisko 90 % na podłożu z dodatkiem 50 g/l sacharozy. Wszystkie badane szczepy wytwarzały kwas L(+) mlekowy.

17

Capability of Geotrichum candidum yeasts for cellulases and xylanases biosynthesis

58%

Witkowska D., Piegza M.

Electronic Journal of Polish Agricultural Universities. Series: Biotechnology

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2006

|

tom 09

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nr 4

18

Metabolic changes in acetate mutants of Yarrowia lipolytica yeast

58%

Robak M.

Bulletin of the Polish Academy of Sciences. Biological Sciences

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2000

|

tom 48

|

nr 4

19

Influence of sugars on isolated microspore development in maize [Zea mays L.]

58%

Goralski G., Lafitte C., Bouazza L., Matthys-Rochon E., Przywara L.

Acta Biologica Cracoviensia. Series Botanica

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2002

|

tom 44

Carbon source and osmotic pressure are known to be of great importance in cultures in vitro. We compared the effectiveness of sucrose, maltose and mixtures of glucose with fructose in androgenic culture of isolated maize microspores. Also we examined changes in media during culture, focusing on osmotic pressure and sugar composition. The results suggest that osmotic pressure and kind of sugar have a great influence on androgenesis induction but much less influence on the number of macroscopic structures formed. In media containing sucrose the osmotic pressure rises significantly due to sucrose hydrolysis. In other media tested, changes in osmotic pressure are much smaller or not significant. These results suggest that the factors involved in androgenesis induction are different from those responsible for macroscopic structure formation. Changes in sugar composition and osmotic pressure increases in sucrose-based medium might decrease the effectiveness of androgenesis in maize microspore culture.

20

Effect of plant growth hormones on growth of Azospirillum sp. in media with different carbon sources

58%

Strzelczyk S., Kampert M., Rozycki H., Li C.-Y.

Acta Microbiologica Polonica

|

1994

|

tom 43

|

nr 1

Ograniczanie wyników

Effect of sucrose concentration on oxalic acid biosynthesis by Aspergillus niger

Optimization of process parameters for maximum poly[-beta-]hydroxybutyrate [PHB] production by Bacillus thuringiensis IAM 12077

Environmental influence of cultural medium on bioherbicidal activities of Pseudomonas aeruginosa C1501 on mono and dico weeds

Bifidogenic and antioxidant activity of exopolysaccharides produced by Lactobacillus rhamnosus E/N cultivated on different carbon sources

Can seabirds modify carbon burial in fjords?

Cellular sources of hydrogen peroxide and iron toxicity in yeast

Effect of carbon source on the production of lytic enzymes by filamentous fungi of the Trichoderma genus

Rice husk as carbon source and biofilm carrier for water denitrification

Aspergillus-fermented Jatropha curcas seed cake: proximate composition and effects on biochemical indices in Wistar rats

Waste fish oil as an alternative carbon source in microbial oil production by Yarrowia lipolytica yeast

Enhancement of biomass and total carotenoid content of a UV-resistant strain of Dietzia maris in response to different carbon and nitrogen sources

Enhanced production of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) copolymer by endophytic Bacillus cereus RCL 02 utilizing sugarcane molasses as sole source of carbon: a statistical optimization approach

FAME profiles in Pseudomonas vesicularis during catechol and phenol degradation in the presence of glucose as an additional carbon source

The effect of growth medium on the antioxidant defense of Saccharomyces cerevisiae