SPECIFICITY OF CHANGE IN SORPTION CAPACITY OF FLAX FIBER UNDER REGULABLE BIO-CATALYTICAL DESTRUCTION OF NEUTRAL CARBOHYDRATES
Abstract
Evaluation of the nano sizes of hydrosols from homogeneous cellulosic and industrial products was made using dynamic light scattering method. The influence of the size of the globule of protein catalysts and the duration of their action on the roving of carded flax fiber was compared. The correlation between the change in the equilibrium absorption of sorption marker (methylene blue) and residual content in the fiber of hemicelluloses was monitored. On the basis of a comparative analysis of the efficiency of biocatalysts in industrial homogeneous and cellulosic preparations it was revealed that globule size influences on the efficiency of sorption properties of flax fibers. The use of homogeneous enzymes with differing sized parameters has allowed isolating the contribution of the target enzymatic modification as in the microfibrillar structure of elementary fibers and for modification the hemicelluloses in the binding substance fixing the elementary fibers in the bast bundles (the linen fibrous complexes). The principles of selection of biocatalysts to increase sorption capacity in flax fiber sorbents were revealed. It was found that the sorption capacity of flax fiber sorbents increases due to the development of mezopore space in elementary fibres and regulable amorphization of interfiber binders in the structure of the linen complex. The research revealed that the the amorphization of flax fiber took place only when the cellulases was used. The size of their globules enables the penetration of these enzymes into mesopores of elementary flax fibres. It was established experimentally that the presence of large isoforms of cellulases or hemicellulases can promote as the development of the internal volume into the fibre binders and also conservation the permissible level of reduction of the hemicelluloses amount in flax fibres is not less than 10 mass.%.
Forcitation:
Aleeva S.V., Lepilova O.V., Kurzanova P.Yu., Koksharov S.A. Specificity of change in sorption capacity of flax fiber under regulable bio-catalytical destruction of neutral carbohydrates. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 2. P. 80-85
References
Ho Yu.-Sh., Wang Ch.-Ch. Sorption equilibrium of mercury onto ground-up tree fern. J. Hazardous Materials. 2008. V. 156. N 1-3. P. 398-404. DOI: 10.1016/j.jhazmat.2007.12.030.
Aydm H., Bulut Ya., Yerlikaya C. Removal of copper (II) from aqueous solution by adsorption onto low-cost adsorbents. J. Environmental Management. 2008. V. 87. N 1. P. 37-45. DOI: 10.1016/j.jenvman.2007.01.005.
Almeida de Sousa D. Development of a heavy metal sorption system through the P=S functionalization of coconut (Cocos nucif-era) fibers. Bioresource Technology. 2010. V. 101. N 1. P. 138-143. DOI: 10.1016/j.biortech.2008.08.051.
Nikiforova T.E., Коzlоv V.А., Bagrovckaya N.А. Studying of influence of enzymatic treatment for short linen fiber on its sorp-tion ability. Khim. Rastitelnogo Syrya. 2005. N 4. P. 45-52 (in Russian)
O’Connell W.D., Birkinshawb C., O’Dwyera F.T. Heavy metal adsorbents prepared from the modification of cellulose: A re-view. Bioresource Technology. 2008. V. 99. N 15. P. 6709-6724. DOI: 10.1016/j.biortech.2008.01.036.
Nikiforova T.E. Absorption properties of flax fibre modified by enzymes. Zhurn. Prik. Khim. 2007. V. 80. N 2.
P. 236-240 (in Russian).
Кокsharov S.А., Аlleeva S.V. Chemistry and Technology of Biocatalyzed Nanoengineering of Linen Textile Materials. Ross. Khim. Zhurn. 2011. V. 55. N 3. P. 46-58 (in Russian).
Коksharov S.А. Application of the method of dynamic light scattering to estimate the nanoparticle sizes in the bicomponent hy-drolysis. Izv. Vysh. Uchebn. Zaved. Khim. Khim. Tehnol. 2015. N 1. P. 33-36 (in Russian).
Polygalina G.V., Cherednichenko V.S., Rimareva L.V. The determination of enzyme activity. Handbook. М.: De Li print. 2003. P. 180-181 (in Russian).
Olennikov D.N., Таnkhaeva L.М. The method of quantitative determination of the group composition of the carbohydrate com-plex of plant objects Khim. Rastitelnogo Syrya. 2006. N 4. P. 29-33 (in Russian).
Shamolina I.I., Makarenko S.V., Kotova E.V., Sinitsyn A.P. Biochemical Method of Improving Quality of Flax-Containing Yarn for Knitting Industry. Fibre Chemistry. 2014. V. 45. N 5. P. 294-296. DOI: 10.1007/s10692-014-9529-1.
Bulakhov A.G., Gusakov A.V., Chekushina A.V., Satrutdinov A.D., Koshelev A.V., Matys V.Yu., Sinitsyn A.P. Isolation of homogeneous polysaccharide monooxygenases from fungal sources and investigation of their synergism with cellulases when acting on cellulose. Biochemistry. 2016. V. 81. N 5. P. 530-537. DOI: 10.1134/S0006297916050102.
