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Wyświetlanie 1-15 z 94
Tytuł:
Kinetics and specificity of guinea pig liver aldehyde oxidase and bovine milk xanthine oxidase towards substituted benzaldehydes.
Autorzy:
Panoutsopoulos, Georgios
Beedham, Christine
Powiązania:
https://bibliotekanauki.pl/articles/1041542.pdf
Data publikacji:
2004
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
xanthine oxidase
dopamine
benzaldehydes
aldehyde oxidase
protocatechuic aldehyde
isovanillin
Opis:
Molybdenum-containing enzymes, aldehyde oxidase and xanthine oxidase, are important in the oxidation of N-heterocyclic xenobiotics. However, the role of these enzymes in the oxidation of drug-derived aldehydes has not been established. The present investigation describes the interaction of eleven structurally related benzaldehydes with guinea pig liver aldehyde oxidase and bovine milk xanthine oxidase, since they have similar substrate specificity to human molybdenum hydroxylases. The compounds under test included mono-hydroxy and mono-methoxy benzaldehydes as well as 3,4-dihydroxy-, 3-hydroxy-4-methoxy-, 4-hydroxy-3-methoxy-, and 3,4-dimethoxy-benzaldehydes. In addition, various amines and catechols were tested with the molybdenum hydroxylases as inhibitors of benzaldehyde oxidation. The kinetic constants have shown that hydroxy-, and methoxy-benzaldehydes are excellent substrates for aldehyde oxidase (Km values 5×10-6 M to 1×10-5 M) with lower affinities for xanthine oxidase (Km values around 10-4 M). Therefore, aldehyde oxidase activity may be a significant factor in the oxidation of the aromatic aldehydes generated from amines and alkyl benzenes during drug metabolism. Compounds with a 3-methoxy group showed relatively high Vmax values with aldehyde oxidase, whereas the presence of a 3-hydroxy group resulted in minimal Vmax values or no reaction. In addition, amines acted as weak inhibitors, whereas catechols had a more pronounced inhibitory effect on the aldehyde oxidase activity. It is therefore possible that aldehyde oxidase may be critical in the oxidation of the analogous phenylacetaldehydes derived from dopamine and noradrenaline.
Źródło:
Acta Biochimica Polonica; 2004, 51, 3; 649-663
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enzymatic oxidation of phthalazine with guinea pig liver aldehyde oxidase and liver slices: inhibition by isovanillin
Autorzy:
Panoutsopoulos, Georgios
Beedham, Christine
Powiązania:
https://bibliotekanauki.pl/articles/1041506.pdf
Data publikacji:
2004
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
xanthine oxidase
phthalazine
aldehyde oxidase
liver slices
disulfiram
isovanillin
allopurinol
Opis:
The enzymes aldehyde oxidase and xanthine oxidase catalyze the oxidation of a wide range of N-heterocycles and aldehydes. These enzymes are widely known for their role in the metabolism of N-heterocyclic xenobiotics where they provide a protective barrier by aiding in the detoxification of ingested nitrogen-containing heterocycles. Isovanillin has been shown to inhibit the metabolism of aromatic aldehydes by aldehyde oxidase, but its inhibition towards the heterocyclic compounds has not been studied. The present investigation examines the oxidation of phthalazine in the absence and in the presence of the inhibitor isovanillin by partially purified aldehyde oxidase from guinea pig liver. In addition, the interaction of phthalazine with freshly prepared guinea pig liver slices, both in the absence and presence of specific inhibitors of several liver oxidizing enzymes, was investigated. Aldehyde oxidase rapidly converted phthalazine into 1-phthalazinone, which was completely inhibited in the presence of isovanillin (a specific inhibitor of aldehyde oxidase). In freshly prepared liver slices, phthalazine was also rapidly converted to 1-phthalazinone. The formation of 1-phthalazinone was completely inhibited by isovanillin, whereas disulfiram (a specific inhibitor of aldehyde dehydrogenase) only inhibited 1-phthalazinone formation by 24% and allopurinol (a specific inhibitor of xanthine oxidase) had little effect. Therefore, isovanillin has been proved as an inhibitor of the metabolism of heterocyclic substrates, such as phthalazine, by guinea pig liver aldehyde oxidase, since it had not been tested before. Thus it would appear from the inhibitor results that aldehyde oxidase is the predominant enzyme in the oxidation of phthalazine to 1-phthalazinone in freshly prepared guinea pig liver slices, whereas xanthine oxidase only contributes to a small extent and aldehyde dehydrogenase does not take any part.
Źródło:
Acta Biochimica Polonica; 2004, 51, 4; 943-951
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polyphenol oxidase from wheat bran is a serpin
Autorzy:
Yamasaki, Yoshiki
Konno, Haruyoshi
Noda, Kazuhiko
Powiązania:
https://bibliotekanauki.pl/articles/1040750.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
polyphenol oxidase
serpin
wheat bran
Opis:
Polyphenol oxidase (PPO; EC 1.10.3.2) was isolated from wheat bran by a procedure that included ammonium sulfate fractionation, batch adsorption by DEAE-cellulofine, CM-cellulofine column chromatography, DEAE-cellulofine column chromatography, preparative isoelectric focusing, adsorption on the membrane of a Vivapure Q Maxi H spin column, and heat treatment. These procedures led to 150-fold purification with 4.2% recovery. The PPO was homogeneous by SDS/PAGE. The relative molecular weight of the PPO was estimated to be 37000 based on its mobility in SDS/PAGE. The isoelectric point of the PPO was 4.4. The Km values of the PPO for caffeic acid, chlorogenic acid, pyrocatechol, 4-methyl catechol and l-DOPA as substrates were 0.077, 0.198, 1.176, 1.667 and 4.545 mM. The PPO was strongly inhibited by tropolone. The Ki value for tropolone is 2.2 × 10-7 M. The sequence of the 15 N-terminal amino-acid residues was determined to be ATDVRLSIAHQTRFA, which was identical to those of serpin from Triticum aestivum and protein Z from Hordeum vulgare. The PPO strongly inhibited the activity of trypsin, which is an enzyme of serine proteases; 50% inhibition was observed with 1.5 × 10-7 M PPO. The Ki value for PPO is 2.3 × 10-8 M. The wheat bran PPO should be a very important protein for protecting wheat against disease, virus, insect and herbivore damages by both the activities of PPO and protease inhibitor.
Źródło:
Acta Biochimica Polonica; 2008, 55, 2; 325-328
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enzymatic oxidation of substituted tryptamines catalysed by monoamine oxidase
Autorzy:
Dragulska, S.
Kańska, M.
Powiązania:
https://bibliotekanauki.pl/articles/146939.pdf
Data publikacji:
2014
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
monoamine oxidase (MAO)
tryptamine
serotonin
isotope effects
Opis:
The enzymatic deamination of 5-fl uorotryptamine and 5-hydroxytryptamine, 5-HT, catalysed by enzyme monoamine oxidase A (MAO-A, EC 1.4.3.4) was investigated using the kinetic (KIE) and solvent (SIE) isotope effects methods. The numerical values of deuterium isotope effects in the (1R) positions of 5-F-tryptamine were determined using non-competitive spectrophotomeric method. Isotopologue 5-F-[(1R)- -2H]-tryptamine, needed for kinetic studies was obtained by enzymatic decarboxylation of 5'-fl uoro-L-tryptophan, 5'-F-L-Trp, in fully deuteriated medium.
Źródło:
Nukleonika; 2014, 59, 3; 91-95
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The role of alternative oxidase in hypoxic metabolism of nitric oxide
Autorzy:
Igamberdiev, A.
Shah, J.
Cochrane, D.
Gupta, K.
Vanlerberghe, G.
Powiązania:
https://bibliotekanauki.pl/articles/81011.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
alternative oxidase
cytochrome C oxidase
nitric oxide
metabolism
hypoxia
gene expression
oxygen condition
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kinetics properties of polyphenol oxidase in hawthorn (Crataegus spp.)
Autorzy:
Saeidian, S.
Powiązania:
https://bibliotekanauki.pl/articles/10795.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
kinetic property
polyphenol oxidase
hawthorn
Crataegus
purification
inhibition
thermal inactivation
Opis:
Polyphenol oxidase (PPO) from hawthorn was extracted and partially purified through (NH4)2SO4 precipitation, dialysis and ion exchange chromatography. The activity of polyphenol oxidase was investigated in Crataegus spp. Spectrophotometric method was used to assay the enzyme activity and the kinetic constants - maximum enzyme velocity (Vmax) and Michealis - Menten constant (Km). Of the substrates tested, catechol was the best substrate for PPO with a Km value of 2.2 mM. The optimum pH for PPO activity was found to be 7. The enzyme showed high activity over a broad pH range of 4 - 8. The optimal pH and temperature for enzyme activity were found to be 7 and 40-45 °C, respectively. km value for hawthorn PPO is calculated 22 mM for catechol and 6.7 mM for pyrogallol and 9.7 mM for L-dopa. As can be seen, affinity of PPOs for various substrates varies widely. The enzyme showed a broad activity over a broad pH and temperature range. The thermal inactivation studies showed that the enzyme is heat resistant. The enzyme showed the highest activity toward pyrogallol and no activity toward tyrosine. Of the inhibitors tested, the most potent inhibitors were kojic acid, cysteine and glycine , respectively.
Źródło:
International Letters of Natural Sciences; 2014, 20
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Peroxidase and IAA oxidase activities during sink development in cotton seed.
Autorzy:
Rabadia, Vraj
Thaker, Vrinda
Singh, YeshDev
Powiązania:
https://bibliotekanauki.pl/articles/2199024.pdf
Data publikacji:
2006-06-22
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
cotton
IAA oxidase
peroxidase
seed development
Opis:
Seeds of the three cotton genotypes, H-6 and H-4 (Gossypium hirsutum),and V797 (G. herbaceum) for their growth variations in IAA oxidase and peroxidase activities. The three genotypes varied in their final seed weight. The peroxidase analysis was done with four different hydrogen donors. Though the trends in peroxidase activitywere almost similar in the three genotypes, there was variation with different hydrogen donors. These was an inverse correlation between Cytoplasmic peroxidase and Wall bound peroxidase activity and rate of water uptake of the seed. The peroxidase activity showed up increasing levels only after the rate of water uptake decreased. However, IAA oxidase activity did not show any discernible trend with water content. The role of cytoplasmic and wall bound peroxidase in seed development is discussed in detail    
Źródło:
Plant Breeding and Seed Science; 2006, 53; 27-36
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Alternative oxidase in higher plants.
Autorzy:
Juszczuk, Izabela
Rychter, Anna
Powiązania:
https://bibliotekanauki.pl/articles/1043421.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
mitochondrial respiratory chain
ubiquinol
post-translational/post-transcriptional regulation
respiration
reactive oxygen species
alternative oxidase
Opis:
Plant respiratory chain branches at the level of ubiquinone from where the electrons flow through the cytochrome pathway or to alternative oxidase. Transfer of electrons from ubiquinone to oxygen by alternative oxidase has a non-protonmotive character and, by bypassing two sites of H+ pumping in complexes III and IV, lowers the energy efficiency of respiration. In this paper we review theoretical and experimental studies about the structure and possible function of alternative oxidase. The evidence for specific gene expression dependent on the physiological, developmental and environmental conditions is also described. We underline the physiological role of alternative oxidase as a "survival" protein that allows plants to cope with the stressful environment.
Źródło:
Acta Biochimica Polonica; 2003, 50, 4; 1257-1271
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
In vivo and in vitro activity of 1-aminocyclopropane-1-carboxylic acid oxidase in germinating seeds of China aster (Callistephus chinensis Nees)
Autorzy:
Chojnowski, M.
Skorupinska, A.
Powiązania:
https://bibliotekanauki.pl/articles/1078232.pdf
Data publikacji:
2020
Wydawca:
Instytut Ogrodnictwa
Tematy:
1-amino-cyclopropane-1-carboxylic acid oxidase
Callistephus chinensis
China aster
germinating seed
protein determination
oxidase activity
Opis:
The activity of 1-aminocyclopropane-1-carboxylic acid oxidase (ACO; EC 1.4.3.3) in germinating seeds of Callistephus chinensis was studied. For maximum recovery of ACO activity in vitro, the presence of 10% (w/v) insoluble polyvinylpolypyrrolidone (PVPP) and 30% of glycerol in the extraction medium was necessary. The optimum pH for this activity was 7.0. Ethylene production by whole achenes or enzymatic extract increased due to increasing 1-aminocyclopropane-1-carboxylic acid (ACC) concentrations. Saturation level of ACC for in vivo ACO activity was 10-1 M and Vmax was 10.89 nL C2H4·mg protein-1·h-1. For in vitro ACO activity, the saturation level of ACC was 10-3 M and Vmax was 2.299 nL C2H4·mg protein-1·h-1. Both, in vivo and in vitro ACO activities did not follow Michaelis-Menten kinetics. The Hill coefficients (h) were estimated on the basis of non-linear estimation. Their values were 0.63 for in vivo ACO activity and 1.73 for in vitro ACO activity. The experimental data show that ACO from C. chinensis seeds is an oligomeric enzyme with at least two active sites. During seed germination, in vitro ACO activity was detectable after 12 hours of imbibition, while in vivo ACC conversion to ethylene was observed after 24 h, i.e. – after radicle protrusion. The activity of ACO in C. chinensis seeds is associated with germination sensu stricto, and might be a good marker of this process.
Źródło:
Journal of Horticultural Research; 2020, 28, 2; 11-20
2300-5009
Pojawia się w:
Journal of Horticultural Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Deuterium isotope effects in oxidation of dopamine by tyramine oxidase
Autorzy:
Pająk, M.
Byszewska, W.
Kańska, M.
Powiązania:
https://bibliotekanauki.pl/articles/147724.pdf
Data publikacji:
2013
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
deuterium
dopamine (DA)
isotope effects
oxidation
tyramine oxidase
Opis:
We report the studies on the mechanism of oxidation of dopamine (DA) to 3’,4’-dihydroxyphenylacetaldehyde (DOPAL) by enzyme tyramine oxidase (EC 1.4.3.6) using kinetic isotope effects (KIE) and solvent isotope effects (SIE) methods. For kinetic studies, the selectively deuterium labelled isotopologues of dopamine, i.e., [(1R)-2H]-, and [(1S)- -2H]-DA were used. The numerical values of KIE’s for the (1R)- and (1S)-isotopologues of dopamine in the enzymatic oxidation of DA to DOPAL were determined using the non competitive spectrophotometric method. Also, the SIE’s for this reaction carried out in heavy water were obtained spectrophotometrically. Some mechanistic details of enzymatic oxidation of DA to DOPAL were discussed.
Źródło:
Nukleonika; 2013, 58, 2; 255-259
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oxalic acid degradation by a novel fungal oxalate oxidase from Abortiporus biennis
Autorzy:
Grąz, Marcin
Rachwał, Kamila
Zan, Radosław
Jarosz-Wilkołazka, Anna
Powiązania:
https://bibliotekanauki.pl/articles/1038790.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
oxalate oxidase
oxalic acid
Abortiporus biennis
Opis:
Oxalate oxidase was identified in mycelial extracts of a basidiomycete Abortiporus biennis strain. Intracellular enzyme activity was detected only after prior lowering of the pH value of the fungal cultures by using oxalic or hydrochloric acids. This enzyme was purified using size exclusion chromatography (Sephadex G-25) and ion-exchange chromatography (DEAE-Sepharose). This enzyme exhibited optimum activity at pH 2 when incubated at 40°C, and the optimum temperature was established at 60°C. Among the tested organic acids, this enzyme exhibited specificity only towards oxalic acid. Molecular mass was calculated as 58 kDa. The values of Km for oxalate and Vmax for the enzyme reaction were 0.015 M and 30 mmol min-1, respectively.
Źródło:
Acta Biochimica Polonica; 2016, 63, 3; 595-600
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The mechanism of azide activation of polyphenol oxidase II from tobacco.
Autorzy:
Shi, Chunhua
Liu, Qingliang
Dai, Ya
Xie, Yongshu
Xu, Xiaolong
Powiązania:
https://bibliotekanauki.pl/articles/1043711.pdf
Data publikacji:
2002
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
polyphenol oxidase (PPO)
azide activation
peroxide activation
superoxide activation
copper proteins
Opis:
So far, azide has been consistently reported to act as an inhibitor of metal enzymes, especially copper proteins. The present work shows that azide can also act as an activator of polyphenol oxidase II (PPO II) from tobacco leaves. From0 the square-wave voltammetry of native PPO II, peroxide-PPO II complex and azide-PPO II complex, the reduction of nitro blue tetrazolium by the enzymes and activation of PPO II by peroxide it follows that the binding of azide to PPO II induces the formation of CuO(2)(2-)Cu in the active site of PPO II from CuO(2)(-)Cu in native PPO II. The reason for azide acting as an activator can be attributed to azide complexing with PPO II, thus inducing the formation of CuO(2)(2-)Cu, which is the active site of the peroxide-PPO II complex in which peroxide plays the role of activator.
Źródło:
Acta Biochimica Polonica; 2002, 49, 4; 1029-1035
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The role of ascorbate oxidase in ozone stress in rice
Autorzy:
Ueda, Y.
Wang, Y.
Frei, M.
Powiązania:
https://bibliotekanauki.pl/articles/80959.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
ascorbate
oxidase
ozone stress
rice
tropospheric ozone
gas emission
reactive oxygen species
oxidative stress
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of pH on the activity and structure of choline oxidase from Alcaligenes species
Autorzy:
Hekmat, Azadeh
Saboury, Ali
Moosavi-Movahedi, Ali
Ghourchian, Hedayatollah
Ahmad, Faizan
Powiązania:
https://bibliotekanauki.pl/articles/1040713.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
optimum pH
choline oxidase
nile red
glycine-betaine
Opis:
A reversible effect of pH on the ionization of amino-acid residues at the active center of choline oxidase was observed near the optimum pH (8). Inactivation of choline oxidase took place in the pH ranges 3-6 and 9-11, in which irreversible changes in the structure occur leading to the enzyme inactivation. The first order rate constants of the enzyme's inactivation at various pH values were estimated for the irreversible changes. The Arrhenius analysis revealed no significant changes in the activation enthalpy, while an increase in the activation entropy reflected an increase in the conformational freedom.
Źródło:
Acta Biochimica Polonica; 2008, 55, 3; 549-557
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The age of shelterbelts as a factor determining of enzymes activity in the agricultural landscape
Wiek zadrzewienia jako czynnik determinujący aktywność enzymów w krajobrazie rolniczym
Autorzy:
Wojciech, Szajdak
Meysner, Teresa
Gaca, Wioletta
Styła, Katarzyna
Szczepański, Marek
Powiązania:
https://bibliotekanauki.pl/articles/126159.pdf
Data publikacji:
2019
Wydawca:
Towarzystwo Chemii i Inżynierii Ekologicznej
Tematy:
shelterbelts
xanthine oxidase activity
urate oxidase activity
phenol oxidase activity
zadrzewienia
aktywność oksydazy ksantynowej
aktywność oksydazy moczanowej
aktywność oksydazy fenolowej
Opis:
Shelterbelts belong to the stable elements in the agricultural landscape which reduce very successfully the concentrations of many chemical compounds migrating with ground water, restrain the erosion and regulate water regime in soils. The investigations were conducted in General Dezydery Chlapowski Landscape Park (West Polish Lowland). For purpose of this experiment three shelterbelts and adjoining cultivated fields were selected. Two of them were planted 200 years ago. The dominant species in the first shelterbelts is Robinia pseudacacia and the second one includes of Crataegus monogyna. The third - new shelterbelt was planted in 1993 and consists of several species of plants. An activity of xanthine, urate, and phenol oxidase was investigated. The obtained results have revealed that annual mean activity of xanthine, urate, and phenol oxidase was statistically significant higher in soils under Robinia pseudacacia (6.42, 13.23, 14.22 μmol · h–1 · g–1, respectively), Crataegus monogyna (4.21, 7.02, 12.79 μmol · h–1 · g–1, respectively) than in the soil under new shelterbelt (2.14, 2.15, 8.05 μmol · h–1 · g–1, respectively) and adjoining cultivated fields. The study was to investigate the influence of the age of shelterbelts on the activity of xanthine, urate, and phenol oxidase.
Zadrzewienia należą do stabilnych elementów krajobrazu rolniczego, które skutecznie redukują stężenia wielu biogenów migrujących z wodą gruntową, ograniczają erozję i regulują reżim wodny w glebie. Funkcje, jakie spełniają zadrzewienia w krajobrazie rolniczym, są ważne ze względu na zrównoważony rozwój obszarów wiejskich. Badania prowadzono w Parku Krajobrazowym im. gen. Dezyderego Chłapowskiego w Turwi (województwo wielkopolskie). Próbki gleb pobierano pod trzema zadrzewieniami różniącymi się wiekiem i składem gatunkowym drzew oraz na przyległych polach uprawnych. Dwa z nich powstały około 200 lat temu. W skład gatunkowy pierwszego wchodzi Robinia pseudacacia, natomiast drugiego Crataegus monogyna. Trzecie, nowe wielogatunkowe zadrzewienie powstało w 1993 roku. W glebach oznaczono aktywność oksydazy ksantynowej, moczanowej i fenolowej. Badania wykazały, że średnia roczna aktywność oznaczonych enzymów była statystycznie istotnie wyższa i wynosiła odpowiednio w glebach pod zdrzewieniem robiniowym 6,42, 13,23, 14,22 μmol · h–1 · g–1, pod zadrzewieniem głogowym 4,21, 7,02, 12,79 μmol · h–1 · g–1 niż pod nowym zadrzewieniem 2,14, 2,15, 8,05 μmol · h–1 · g–1 i na przyległych polach uprawnych. Stwierdzono wpływ wieku zadrzewień na aktywność oksydazy ksantynowej, moczanowej i fenolowej.
Źródło:
Proceedings of ECOpole; 2019, 13, 1-2; 53-67
1898-617X
2084-4557
Pojawia się w:
Proceedings of ECOpole
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 94

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