Wyniki wyszukiwania - Biblioteka Nauki

1

Some enzymes of the starch degradation pathway in rumen protozoa with special reference to Ophryoscolex caudatus

100%

Gyulai F. , Coleman G. S.

Acta Protozoologica

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1991

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tom 30

|

nr 1

2

Relative importance of maltose and sucrose supplied during a 2-step potato microtuberization process

100%

Yoon K. S. , Leung D. W. M.

Acta Physiologiae Plantarum

|

2004

|

tom 26

|

nr 1

3

The influence of different carbohydrates on the development of immature zygotic rape embryos [Brassica napus L.cv.Topas]

100%

Bogunia H. , Przywara L.

Acta Biologica Cracoviensia. Series Botanica. Supplement

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1999

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tom 41

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nr 1

4

Changes in the carbohydrate composition of honey undergoing during storage

80%

Rybak-Chmielewska H.

Journal of Apicultural Science

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2007

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tom 51

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nr 1

5

Non-phosphorylative transglucosylation in the serum and liver of mice with transplantable leukaemias

80%

Kotonski B. , Madej J. A. , Sobiech K. A. , Kaszubkiewicz C.

Folia Histochemica et Cytobiologica

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1986

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tom 24

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nr 1

6

Halomonas sp. nov., an EPA-producing mesophilic marine isolate from the Indian Ocean

80%

Salunkhe D. , Tiwari N. , Walujkar S. , Bhadekar R.

Polish Journal of Microbiology

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2011

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tom 60

|

nr 1

EN

Marine samples from the Indian Ocean were used to isolate and characterize the organisms with respect to their fatty acid profiles. Six mesophilic isolates (MBRI 6, MBRI 8, MBRI 9, MBRI 10, MBRI 12 and MBRI 13) were obtained from three different water samples. They were i) Gram-negative, ii) catalase positive, iii) produced acid from glucose and maltose, iv) tolerated 5 to 15% NaCl v) except MBRI 9, showed pH tolerance in the range of 5.0 to 9.0 with optimum pH 7.0 to 8.0 v) grew well at 30°C and were able to grow in the range of 15 to 45°C. EPA, an essential omega-3 fatty acid, was produced by these isolates in the range of 12 to 60% at 30°C. MBRI 12 was found to be a potential source as it produced 60% EPA. This isolate was further identified by partial 16S rDNA sequencing and phylogenetic analysis revealed that the strain belonged to Gammaproteobacteria and was closely related to Halomonas bolviensis (96% sequence similarity, 570 bp). Thus a new genus of Halomonas may be included in earlier reported EPA- producing prokaryotic genera affiliated to the Gammaproteobacteria.

7

Effect of Different Carbon Sources on Amylolytic Activity of Bacillus sp

80%

Grata K. , Nabrdalik M.

Ecological Chemistry and Engineering. A

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2013

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tom Vol. 20, nr 1

39--46

EN

Studies on the amylolytic activity were carried out with used ten (10) Bacillus strains (B. pumilus, B. cereus, B. mycoides and B. subtilis), isolated from soil samples and water of Turawa Lake. The amylolytic activity was estimated on the basis of reduction in the intensity of the blue colour resulting from enzymatic hydrolysis of starch, in depending on the carbon sources and their concentration. The cultures were maintained at 30ºC with the following substrates as carbon sources: potato starch, corn starch, maltose and glucose. Conducted research indicate, that among an analyzed strains the most active appear the B. mycoides G3 and B. subtilis G2. They preferred the maltose as the source of the carbon. Moreover, in comparison with all examined strains, B. subtilis G2 showed the amylolytic activity on all tested media.

PL

Celem badań była ocena aktywności amylolitycznej 10 szczepów Bacillus sp. (B. pumilus, B. cereus, B. mycoides i B. subtilis) wyizolowanych z gleby i wody z jeziora Turawa. Na podstawie stopnia zmniejszenia się zabarwienia z jodem oznaczono ilość rozłożonej skrobi, w zależności od źródła węgla i jego koncentracji. Hodowle prowadzono w temperaturze 30ºC z zastosowaniem następujących źródeł węgla: skrobia ziemniaczana, skrobia kukurydziana, maltoza oraz glukoza. Uzyskane wyniki badań wykazały, iż spośród badanych szczepów Bacillus sp. najbardziej aktywnymi okazały się B. mycoides G3 i B. subtilis G2, które preferowały maltozę jako źródło węgla. Ponadto, w porównaniu do wszystkich szczepów, Bacillus subtilis G2 wykazał największą aktywność na wszystkich testowanych podłożach.

8

Effect of carbohydrate source on in vitro propagation and rooting of two cultivars of petunia (Petunia x atkinsiana D. Don)

80%

Krupa-Malkiewicz M. , Fornal N. , Kosatka A.

Folia Pomeranae Universitatis Technologiae Stetinensis. Agricultura, Alimentaria, Piscaria et Zootechnica

|

2015

|

tom 36

9

Fourier-transform raman spectroscopy of carbohydrates

80%

Goral J.

Current Topics in Biophysics

|

1992

|

tom 16

|

nr 1

10

The influence of various in vitro culture conditions on androgenetic embryo induction and plant regeneration from hexaploid triticale [xTriticosecale Wittm.]

80%

Ponitka A. , Slusarkiewicz-Jarzina A. , Wedzony M. , Marcinska I. , Wozna J.

Journal of Applied Genetics

|

1999

|

tom 40

|

nr 3

11

Staphylococcal L-asparaginase: Catabolic repression of synthesis

80%

Rozalska M. , Mikucki J.

Acta Microbiologica Polonica

|

1992

|

tom 41

|

nr 3-4

12

Regulation of Yersinia enterocolitica mal genes by malT and Mlc proteins

80%

Raczkowska A. , Brzostkowska M. , Brzostek K.

Polish Journal of Microbiology

|

2008

|

tom 57

|

nr 1

EN

To show the role of MalT protein in the regulation of mal genes, encoding proteins involved in transport and metabolism of maltose/ maltodextrins in Yersinia enterocolitica, we constructed a malT mutant which was characterized by a strong reduction in maltose transport and a loss of MBP protein. We also studied the influence of MalT activity on the production of Yop proteins in Y. enterocolitica and found that the level of these virulence factors is not changed in the malT mutant. Subsequently, transcriptional fusion malT::lacZYA was applied to study the activity of malT promoter. Monitoring of β-galactosidase activity suggests the influence of catabolic repression on malT transcription, since the activity of ma/Tpromoter was decreased twofold in the presence of glucose. Furthermore, Mlc protein was identified in Y. enterocolitica as a factor regulating the transcription of malT. We observed a two-fold increase in the level of malT transcription in the mlc mutant background. Moreover, overproduction of Mlc protein strongly inhibited the activity of malT promoter. Thus, the data presented in this study suggest that the level of mal gene expression in Y enterocolitica may be regulated by two proteins: MalT, the activator of mal transcription and Mlc, the repressor of malT expression.

13

The effect of carbohydrate source on the development of Brassica napus L. immature embryos in vitro

80%

Slesak H. , Przywara L.

Acta Biologica Cracoviensia. Series Botanica

|

2003

|

tom 45

|

nr 2

EN

The effect of fructose, glucose, maltose and sucrose at various concentrations on Brassica napus embryos was studied. The morphogenetic reaction depended on the type and concentration of sugar in the medium. The frequency of developing embryos was highest on sucrose, followed by maltose and glucose. Fructose did not stimulate embryo growth. Spectrophotometry of autoclaved fructose showed an absorbance rise between 260-320 nm that could correspond to the formation of furfural derivatives. Autoclaving-induced toxicity probably inhibited embryo growth; heart-shaped stage embryos developed on filter-sterilized fructose. The frequency of developing embryos increased with sugar concentration, but normal embryogenesis occurred only on 1% sucrose and maltose; at higher concentrations callus and/or shoots were formed. On media with 6% sucrose and 12% maltose, shoots and somatic embryos were produced.

14

The survival Ascaris suum in medium with different concentrations of sugars

80%

Zoltowska K. , Lopienska E. , Leszczynska K. , Dmitryjuk M.

Wiadomości Parazytologiczne

|

1998

|

tom 44

|

nr 3

15

Wplyw pozywek P2, MN6 i C17 oraz maltozy i sacharozy na wydajnosc androgenezy u pszenzyta

70%

Marciniak K. , Banaszak Z. , Wedzony M. , Brykczynska L.

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

|

1998

|

nr 205-206

137-141

16

Optimization of physico-chemical conditions for improved production of beta-amylase by Bacillus megaterium B6

70%

Ray R. R. , Jana S. C. , Nanda G.

Acta Microbiologica Polonica

|

1995

|

tom 44

|

nr 1

17

Wplyw pozywek P2 i C17 oraz maltozy i sacharozy na wydajnosc androgenezy u pszenicy

61%

Marciniak K. , Banaszak Z. , Brykczynska L.

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

|

1997

|

nr 204

43-47

18

Production and partial characterization of high molecular weight extracellular alpha-amylase from Thermoactinomyces vulgaris isolated from Egyptian soil

61%

Abou Dobara M. , El-Sayed A. , El-Fallal A. , Omar N.

Polish Journal of Microbiology

|

2011

|

tom 60

|

nr 1

EN

Optimizing production of α-amylase production by Thermoactinomyces vulgaris isolated from Egyptian soil was studied. The optimum incubation period, temperature and initial pH of medium for organism growth and enzyme yield were around 24 h, 55°C and 7.0, respectively. Maximum α-amylase activity was observed in a medium containing starch as carbon source. The other tested carbohydrates (cellulose, glucose, galactose, xylose, arabinose, lactose and maltose) inhibited the enzyme production. Adding tryptone as a nitrogen source exhibited a maximum activity of α-amylase. Bactopeptone and yeast extract gave also high activity comparing to the other nitrogen sources (NH₄Cl, NH₄NO₃, NaNO₃, KNO₃, CH₃CO2 NH₄). Electrophoresis profile of the produced two α-amylase isozymes indicated that the same pattern at about 135145 kDa under different conditions. The optimum pH and temperature of the enzyme activity were 8.0 and 60°C, respectively and enzyme was stable at 50°C over 6 hours. The enzyme was significantly inhibited by the addition of metal ions (Na⁺, Co²⁺ and Ca²⁺) whereas Cl⁻ seemed to act as activator. The enzyme was not affected by 0.1 mM EDTA while higher concentration (10 mM EDTA) totally inactivated the enzyme.

19

Srodki slodzace.Czesc.I Srodki slodzace dostarczajace kalorii [nutritive sweeteners]

51%

Pordab Z.

Biuletyn Informacyjny Przemysłu Koncentratów Spożywczych

|

1994

|

tom 34

|

nr 1

13-20