Catalytic properties of yellow laccase from Pleurotus ostreatus D1

2004 ◽  
Vol 30 (1) ◽  
pp. 19-24 ◽  
Author(s):  
N.N Pozdnyakova ◽  
J Rodakiewicz-Nowak ◽  
O.V Turkovskaya
Keyword(s):  
Pleurotus Ostreatus ◽  
Catalytic Properties ◽  
Yellow Laccase ◽  
Pleurotus Ostreatus D1

Yellow laccase from the fungus Pleurotus ostreatus D1: Purification and characterization

2006 ◽  
Vol 42 (1) ◽  
pp. 56-61 ◽  
Author(s):  
N. N. Pozdnyakova ◽  
O. V. Turkovskaya ◽  
E. N. Yudina ◽  
Ya. Rodakiewicz-Nowak
Keyword(s):  
Pleurotus Ostreatus ◽  
Purification And Characterization ◽  
Yellow Laccase ◽  
Pleurotus Ostreatus D1

Influence of cultivation conditions on pyrene degradation by the fungus Pleurotus Ostreatus D1

2009 ◽  
Vol 26 (2) ◽  
pp. 205-211 ◽  
Author(s):  
Natalia N. Pozdnyakova ◽  
Svetlana V. Nikiforova ◽  
Oleg E. Makarov ◽  
Marina P. Chernyshova ◽  
Kirill E. Pankin ◽  
...  
Keyword(s):  
Pleurotus Ostreatus ◽  
Cultivation Conditions ◽  
Pyrene Degradation ◽  
Pleurotus Ostreatus D1

Emulsifying Agent Production During PAHs Degradation by the White Rot Fungus Pleurotus Ostreatus D1

2009 ◽  
Vol 58 (6) ◽  
pp. 554-558 ◽  
Author(s):  
Svetlana V. Nikiforova ◽  
Natalia N. Pozdnyakova ◽  
Olga V. Turkovskaya
Keyword(s):  
Pleurotus Ostreatus ◽  
White Rot ◽  
White Rot Fungus ◽  
Emulsifying Agent ◽  
Pleurotus Ostreatus D1

Chrysene bioconversion by the white rot fungus Pleurotus ostreatus D1

Microbiology ◽  
2010 ◽  
Vol 79 (4) ◽  
pp. 456-460 ◽  
Author(s):  
S. V. Nikiforova ◽  
N. N. Pozdnyakova ◽  
O. E. Makarov ◽  
M. P. Chernyshova ◽  
O. V. Turkovskaya
Keyword(s):  
Pleurotus Ostreatus ◽  
White Rot ◽  
White Rot Fungus ◽  
Pleurotus Ostreatus D1

Influence of PAHs on ligninolytic enzymes of the fungus Pleurotus ostreatus D1

2010 ◽  
Vol 5 (1) ◽  
pp. 83-94 ◽  
Author(s):  
Natalia Pozdnyakova ◽  
Svetlana Nikiforova ◽  
Olga Turkovskaya
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Pleurotus Ostreatus ◽  
Degradation Products ◽  
Ligninolytic Enzymes ◽  
Versatile Peroxidase ◽  
Cultivation Medium ◽  
Polycyclic Aromatic ◽  
The Difference ◽  
Pleurotus Ostreatus D1

AbstractPolycyclic aromatic hydrocarbons (PAHs), their derivatives, and their degradation products were assayed for the ability to enhance activities of ligninolytic enzymes (laccase and versatile peroxidase) of the fungus Pleurotus ostreatus D1. The activities of both laccase and versatile peroxidase were induced by the PAHs, their derivatives, and their degradation products. Laccase was produced mostly in the first 7–10 days, whereas the production of versatile peroxidase began after 5–7 days of cultivation. Non-denaturing PAGE showed the presence of additional forms of laccase and versatile peroxidase in the presence of the xenobiotics in the cultivation medium. The difference in the production time for these enzymes may reflect that laccases are involved in the first stages of PAHs degradation and that versatile peroxidase can be necessary for oxidation of some degradation products. This is the first report on versatile peroxidase induction by PAHs and their derivatives.

Microstructure and reactivity of small metal particles: The role of Ce additives

1992 ◽  
Vol 50 (1) ◽  
pp. 318-319
Author(s):  
L.D. Schmidt ◽  
K. R. Krause ◽  
J. M. Schwartz ◽  
X. Chu
Keyword(s):  
Atmospheric Pressure ◽  
Noble Metals ◽  
Mixed Oxides ◽  
Catalytic Properties ◽  
Chemical Shifts ◽  
Catalytic Converter ◽  
Structural Evolution ◽  
Single Particles ◽  
Small Metal Particles

The evolution of microstructures of 10- to 100-Å diameter particles of Rh and Pt on SiO2 and Al2O3 following treatment in reducing, oxidizing, and reacting conditions have been characterized by TEM. We are able to transfer particles repeatedly between microscope and a reactor furnace so that the structural evolution of single particles can be examined following treatments in gases at atmospheric pressure. We are especially interested in the role of Ce additives on noble metals such as Pt and Rh. These systems are crucial in the automotive catalytic converter, and rare earths can significantly modify catalytic properties in many reactions. In particular, we are concerned with the oxidation state of Ce and its role in formation of mixed oxides with metals or with the support. For this we employ EELS in TEM, a technique uniquely suited to detect chemical shifts with ∼30Å resolution.

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