Temat: enzyme activity - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The effect of pulsation magnetic field on enzymatic activity of hydrolases of Candida albicans strains isolated from patients of risk group
Autorzy:: Glowacka, A.
Budak, A.
Powiązania:: https://bibliotekanauki.pl/articles/836784.pdf
Data publikacji:: 1998
Wydawca:: Polskie Towarzystwo Parazytologiczne
Tematy:: patient
hydrolytic enzyme
enzyme
enzyme activity
Candida albicans
Źródło:: Annals of Parasitology; 1998, 44, 3
0043-5163
Pojawia się w:: Annals of Parasitology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Biochemical study of trehalase activity in Aspergillus niger conidia
Autorzy:: Chrungu, Deepti
Sharma, Sukesh Chander
Akhtar, Mahmood
Powiązania:: https://bibliotekanauki.pl/articles/1178299.pdf
Data publikacji:: 2017
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Aspergillus niger
Conidia
Enzyme Activity
Trehalase
Opis:: Trehalase (α, α-trehalose-1-C-glucohydrolase, EC 3.2.1.28) is a glycoside hydrolase enzyme that catalyzes the conversion of trehalose to glucose. Trehalose hydrolysis by trehalase enzyme is an important physiological process for various organisms, such as fungal spore germination, insect flight, and the resumption of growth in resting cells. So by studying biochemical properties of trehalase we can control the spore germination of harmful fungus, Apergillus niger. Till now trehalase has been reported from many other organisms including plants and animals, Trehalase has been purified and characterized from various organisms such as Saccharomyces cerevisiae, Lentinula edodes, Acidobacterium capsulatum, and Medicago sativa, as well as root nodules of Phaseolus vulgaris, soybean and from the from the seeds of Triticum aestivum. In this study, trehalase was purified from Aspergillus niger grown on cellulosic medium. And this purified trehalase was tested for various requirements it may need for enzymatic activity such as inorganic phosphate and Magnesium ions (Mg2+).
Źródło:: World Scientific News; 2017, 86, 3; 349-356
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Influence of organic solvents on papain kinetics
Autorzy:: Szabelski, Mariusz
Stachowiak, Krystyna
Wiczk, Wiesław
Powiązania:: https://bibliotekanauki.pl/articles/1044084.pdf
Data publikacji:: 2001
Wydawca:: Polskie Towarzystwo Biochemiczne
Tematy:: organic solvent
fluorogenic substrate
enzyme activity
papain
Opis:: Papain activity was studied in water-organic solvent mixtures using the fluorogenic substrate Dabcyl-Lys-Phe-Gly-Gly-Ala-Ala-Edans. The increase of organic solvent (MeOH, EtOH, iPrOH, TFE, MeCN, (MeO)2Et and DMF) concentration in the mixture caused a substantial decrease the initial rate of papain-catalyzed hydrolysis. Moreover, the number of papain active sites decreased with the increase of DMF and MeOH concentration.
Źródło:: Acta Biochimica Polonica; 2001, 48, 4; 1197-1201
0001-527X
Pojawia się w:: Acta Biochimica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Effects of three pesticides on superoxide dismutase and glutathione-S-transferase activities and reproduction of Daphnia magna
Autorzy:: Song, Y.
Chen, M.
Zhou, J.
Powiązania:: https://bibliotekanauki.pl/articles/204826.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: enzyme activity
reproductive parameter
pesticide
Daphnia magna
Opis:: Applying pesticides to crops is one of the causes of water pollution by surface runoff, and chlorpyrifos, trifluralin and chlorothalonil are used respectively as insecticide, herbicide and fungicide for crop plants widely. To explore effects of three pesticides on aquatic organisms, superoxide dismutase (SOD) and glutathione S-transferase (GST) activities were determined after 24 h and 48 h exposure of D. magna with ages of 6–24 h to several low concentrations of chlorpyrifos (0.36, 0.72, 1.43, 2.86, 5.72 μg∙L⁻¹), trifluralin (0.17, 0.33, 0.66, 1.33, 2.65 mg∙L⁻¹) and chlorothalonil (0.09, 0.18, 0.36, 0.72, 1.43 mg∙L⁻¹) respectively. Main reproductive parameters including first pregnancy time, first brood time, the number of first brood and total fecundity after 21 d exposures at the same concentrations of pesticides as described above were also measured. The results showed that the activities of GST increased in lower concentrations and decreased in higher concentrations after 24 h exposure to three pesticides, respectively. The activities of SOD showed the same changes after 48 h exposure. With the time prolonged, the activities of GST decreased while the activities of SOD increased. After 21 d exposure, the first pregnancy time and first brood time were delayed, while the number of the first brood and total fecundity per female decreased with increasing concentrations. These results corroborated that GST activity was more sensitive to those pesticides than SOD activity, and there was a significant relationship between total fecundity and pesticides-dose(r>0.94, n=6), GST activity after 48 h exposure and total fecundity after 21 d exposure (r>0.92, n=6).
Źródło:: Archives of Environmental Protection; 2017, 43, 1; 80-86
2083-4772
2083-4810
Pojawia się w:: Archives of Environmental Protection
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Influence of the zearalenone on the activity of chosen liver enzymes in a rat
Autorzy:: Stadnik, A
Borzecki, A.
Powiązania:: https://bibliotekanauki.pl/articles/51110.pdf
Data publikacji:: 2009
Wydawca:: Instytut Medycyny Wsi
Tematy:: rat
liver
enzyme
enzyme activity
zearalenone
mycotoxin
Fusarium
liver cell
Źródło:: Annals of Agricultural and Environmental Medicine; 2009, 16, 1; 31-35
1232-1966
Pojawia się w:: Annals of Agricultural and Environmental Medicine
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Enzyme activity in forest peat soils
Autorzy:: Blonska, E.
Powiązania:: https://bibliotekanauki.pl/articles/38510.pdf
Data publikacji:: 2010
Wydawca:: Instytut Badawczy Leśnictwa
Tematy:: enzyme activity
forest soil
peat soil
dehydrogenase
urease
Opis:: The aim of the study was to determine the activity of dehydrogenases and urease in forest peat soils of different fertility. There were selected 23 experimental plots localised in central and northern Poland. The research was conducted on forest fens, transition bogs and raised bogs. The biggest differences in soil physical and chemical properties were detected between fen and raised bog soils while raised bog soils and transition bog soils differed the least. Statistically significant differences between particular subtypes of peat soils were observed for soil pH-H2O, pH-KCl, C/N ratio as well as the content of organic carbon, nitrogen, calcium and potassium. The highest average dehydrogenase activity in the soil surface level was observed in fen soils, and the lowest – in raised bogs soils. The results obtained on urease activity were similar. Differences in urease activity in the studied soil types were shown. Dehydrogenase activity did not reveal statistically significant diversity. The activity of urease was negatively correlated with the content of carbon, C/N ratio, hydrolytic acidity and moisture. Also the increase in enzymatic activity accompanied by the increase in pH has been observed.
Źródło:: Folia Forestalia Polonica. Series A . Forestry; 2010, 52, 1
0071-6677
Pojawia się w:: Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Missense mutation within cystic fibrosis transmembrane conductance regulator (CFTR) gene is associated with selected parameters of the frozen-thawed spermin Holstein-Friesian bulls
Autorzy:: Kaminski, S.
Hering, D.M.
Kordan, W.
Lecewicz, M.
Powiązania:: https://bibliotekanauki.pl/articles/2087549.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: bull
sperm
polymorphism
CFTR gene
antioxidant enzyme activity
Źródło:: Polish Journal of Veterinary Sciences; 2019, 2; 221-225
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Influence of Me2SO and incubation time on papain activity studied using fluorogenic substrates.
Autorzy:: Szabelski, Mariusz
Stachowiak, Krystyna
Wiczk, Wiesław
Powiązania:: https://bibliotekanauki.pl/articles/1044042.pdf
Data publikacji:: 2001
Wydawca:: Polskie Towarzystwo Biochemiczne
Tematy:: fluorogenic substrate
enzyme activity
papain
Me2SO
Opis:: Papain activity in a buffer containing Me2SO was studied using fluorogenic substrates. It was found that the number of active sites of papain decreases with increasing Me2SO concentration whereas the incubation time, in a buffer containing 3% Me2SO does not affect the number of active sites. However, an increase of papain incubation time in the buffer with 3% Me2SO decreased the initial rate of hydrolysis of Z-Phe-Arg-Amc as well as Dabcyl-Lys-Phe-Gly-Gly-Ala-Ala-Edans. Moreover, an increase of Me2SO concentration in working buffer decreased the initial rate of papain-catalysed hydrolysis of both substrates. A rapid decrease of the initial rate (by up to 30%) was observed between 1 and 2% Me2SO. Application of the Michaelis-Menten equation revealed that at the higher Me2SO concentrations the apparent values of kcat/Km decreased as a result of Km increase and kcat decrease. However, Me2SO changed the substrate binding process more effectively (Km) than the rate of catalysis kcat..
Źródło:: Acta Biochimica Polonica; 2001, 48, 4; 995-1002
0001-527X
Pojawia się w:: Acta Biochimica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Usability of enzyme activity in estimation of forest soil quality
Autorzy:: Blonska, E.
Januszek, K.
Powiązania:: https://bibliotekanauki.pl/articles/38481.pdf
Data publikacji:: 2013
Wydawca:: Instytut Badawczy Leśnictwa
Tematy:: usability
enzyme activity
estimation
forest soil
soil quality
soil enzyme
site index
Opis:: Taking into account the progressive degradation of soils it is important to assess their quality. Soil quality depends on a large number of physical, chemical, biological and biochemical properties. In the publications available, there are presented three approaches regarding the use of soil properties to estimate soil quality: (1) the use of individual properties, (2) the use of simple indexes and (3) the use of complex indexes derived from combinations of different properties. The purpose of this study was to investigate the possibility to use enzymes as indicators of forest soil quality. Experimental plots (43) were located in central Poland. The study was carried out in a number of diverse fresh forest sites. To assess the quality of forest soils dehydrogenase and urease activity and the degree of base saturation were used. One of the final conclusions point out that enzymatic activity indicates current site condition as well as the changes that occur in soil better than soil physical and chemical properties. In other words, in comparison to soil enzymatic activity, soil physico-chemical properties constitute a less sensitive indicator of soil changes.
Źródło:: Folia Forestalia Polonica. Series A . Forestry; 2013, 55, 1
0071-6677
Pojawia się w:: Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Aeration properties and enzyme activity on the example of Arenic Chernozem [Tisice]
Autorzy:: Wlodarczyk, T.
Glinski, J.
Stepniewski, W.
Stepniewska, Z.
Brzezinska, M.
Kuraz, V.
Powiązania:: https://bibliotekanauki.pl/articles/24679.pdf
Data publikacji:: 2001
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: aeration property
soil
catalase
enzyme activity
oxidoreductase
black earth
dehydrogenase activity
soil enzyme
Źródło:: International Agrophysics; 2001, 15, 2
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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