PEROXIDE DELIGNIFICATION OF THE VEGETATIVE PART OF JERUSALEM ARTICHOKE IN THE MEDIUM ACETIC ACID-WATER

UDC 676.16

  • Tat'yana Vasil'yevna Ryazanova Siberian State University of Science and Technology named after academician M.F. Reshetnev Email: tatyana-htd09@mail.ru
  • Vladimir Sergeyevich Fedorov Siberian State University of Science and Technology named after academician M.F. Reshetnev Email: fedorovvladimir1996@yandex.ru
  • Ekaterina Vyacheslavovna Kharyanova Siberian State University of Science and Technology named after academician M.F. Reshetnev Email: haryanova_ev@mail.sibsau.ru
  • Sergey Redzhinal'dovich Loskutov Institute of Forest named after V.N. Sukachev SB RAS, Federal Research Center "KSC SB RAS" Email: s_regy@mail.ru
  • Aleksandra Vasil'yevna Kournikova Institute of Forest named after V.N. Sukachev SB RAS, Federal Research Center "KSC SB RAS" Email: alexkurn99@yandex.ru
Keywords: redox-organosolvent delignification, non-wood vegetable raw materials, Jerusalem artichoke,, vegetative part, cellulose, lignin

Abstract

The purpose of this work was to evaluate the vegetative part of Jerusalem artichoke as a raw material for the production of cellulose using redox-organosolvent delignification in the medium "CH3СOOН – H2O2 – H2O".

The chemical composition of the vegetative part of Jerusalem artichoke and the influence of technological parameters of the delignification process on the yield and properties of the cellulose product were studied.

It was found that the vegetative part of Jerusalem artichoke collected in October (stems without leaves) with a chemical composition of more than 50 wt.% of polysaccharides in which presented the Kurshner-Hoffer cellulose more than 90 wt.% was more promising for processing. Experimental methods have been used to determine the parameters of the process of delignification of the vegetative part of Jerusalem artichoke, which provide a high yield of cellulose (42.1 wt.%) with a low content of residual lignin (1.1 wt.%): content of H2O2 – 6.5 wt.%, CH3COOH – 23.4 wt.%, GM 15, duration – 2.5 h, catalyst H2SO4 – 0.2 wt.%.

It is shown that pre-extraction of the vegetative part of Jerusalem artichoke with a 0.3% solution of dicarboxylic acids at a temperature of 80 °C with a liquid modulus of 10 for 3 hours reduces the content of residual lignin in the cellulose product to 0.5 wt.% and obtain an extract whose yield is – 7.8 wt.%, including a PB of 4.2 wt.%, which makes it promising for biochemical processing. The obtained results expand the areas of use of the vegetative part of Jerusalem artichoke and show the prospects for further more depth research to optimize the process of delignification and study the properties of the cellulose product.

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Author Biographies

Tat'yana Vasil'yevna Ryazanova, Siberian State University of Science and Technology named after academician M.F. Reshetnev

профессор кафедры химической технологии древесины и биотехнологии, тел. (391) 227-36-54

Vladimir Sergeyevich Fedorov, Siberian State University of Science and Technology named after academician M.F. Reshetnev

младший научный сотрудник проблемной лаборатории, тел. (391)227-36-54

Ekaterina Vyacheslavovna Kharyanova, Siberian State University of Science and Technology named after academician M.F. Reshetnev

студентка

Sergey Redzhinal'dovich Loskutov, Institute of Forest named after V.N. Sukachev SB RAS, Federal Research Center "KSC SB RAS"

доктор химических наук, заведующий отделом физико-химической биологии и биотехнологии компонентов лесных экосистем, тел. (391)249-44-69

Aleksandra Vasil'yevna Kournikova, Institute of Forest named after V.N. Sukachev SB RAS, Federal Research Center "KSC SB RAS"

студент

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Published
2020-12-21
How to Cite
1. Ryazanova T. V., Fedorov V. S., Kharyanova E. V., Loskutov S. R., Kournikova A. V. PEROXIDE DELIGNIFICATION OF THE VEGETATIVE PART OF JERUSALEM ARTICHOKE IN THE MEDIUM ACETIC ACID-WATER // chemistry of plant raw material, 2020. № 4. P. 351-358. URL: http://journal.asu.ru/cw/article/view/8520.
Section
Technology