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Preparation and Properties of New Biocatalysts for Destruction of Plant non-Starch Polysaccharides

https://doi.org/10.18412/1816-0387-2017-4-331-338

Abstract

Recombinant strains Penicillium verruculosum were created which produce homologous endoglucanase 2 (Er2) and heterologous xylanase E (XylE) P. canescens. The recombinant strains were used for preparing new biocatalysts which are enzyme preparations (EP) enriched considerably with Er2 and XylE; the biocatalysts are highly active to plant non-starch polysaccharides (NPS) such as cellulose, β-glucan, xylan. Proteic chromatography was used for determining the qualitative and quantitative composition of the new EP to show that they contain (expressed as proportions of the total protein content) ca. 16–17 % Er2, 48–63 % XylE, 17–30 % cellobiohydrolase, while EP prepared with the recipient strain contained 1.4 % Er2, ca. 60 % cellobiohydrolase and no XylE. pH equal to 4.0 and 5.5 were optimal for the activity to cellulose (with respect to carboxymethylcellulose, CMC) and to xylanase, respectively, EP being active over a wide range of pH from 3 to 7. EP were active to CMC and xylanase at the temperature range from 20 to 80 °C with maxima at 60 and 70 °C. The activity of new EP to xylanase was practically not inhibited by protein inhibitors of rye.

About the Authors

A. P. Sinitsyn
Lomonosov Moscow State University; FRC Fundamentals of Biotechnology, Moscow
Russian Federation


E. A. Rubtsova
FRC Fundamentals of Biotechnology, Moscow
Russian Federation


I. A. Shashkov
FRC Fundamentals of Biotechnology, Moscow
Russian Federation


A. M. Rozhkova
FRC Fundamentals of Biotechnology, Moscow
Russian Federation


O. A. Sinitsyna
Lomonosov Moscow State University
Russian Federation


E. G. Kondratieva
FRC Fundamentals of Biotechnology, Moscow
Russian Federation


I. N. Zorov
Lomonosov Moscow State University; FRC Fundamentals of Biotechnology, Moscow
Russian Federation


D. A. Merzlov
Lomonosov Moscow State University; FRC Fundamentals of Biotechnology, Moscow
Russian Federation


D. O. Osipov
FRC Fundamentals of Biotechnology, Moscow
Russian Federation


V. Yu. Matys
Institute of Biochemistry and Physiology of Microorganisms, Pushchino
Russian Federation


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Review

For citations:


Sinitsyn A.P., Rubtsova E.A., Shashkov I.A., Rozhkova A.M., Sinitsyna O.A., Kondratieva E.G., Zorov I.N., Merzlov D.A., Osipov D.O., Matys V.Yu. Preparation and Properties of New Biocatalysts for Destruction of Plant non-Starch Polysaccharides. Kataliz v promyshlennosti. 2017;17(4):331-338. (In Russ.) https://doi.org/10.18412/1816-0387-2017-4-331-338

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