DEVELOPMENT OF ECOLOGICALLY SAFE TECHNOLOGY OF WASTE MYCELIA RECYCLING

Oksana Yegorova

Abstract


Chitosan is a cationic polymer derived by deacetylation of chitin obtained from crustaceans. Biodegradable and mucoadhesion properties of chitosan have recently led to increasing the interest. Chitosan can be used as raw material for the manufacture of films, membranes and fibers, in such branches as medicine, agriculture, veterinary medicine, biotechnology, cosmetics and pulp, and paper industry. Previously it was investigated that in Aspergillus Niger cell wall constituents, chitin comprises of 42 % and also researchers confirmed that the chitosan content of fungi depends on fungal strains, mycelial age, cultivation medium and conditions [1]. In the paper the results of the study of physical and chemical properties of obtained samples of chitosan are shown. The influence of initial parameters of the process on the quality of chitosan is investigated. Use of the biomass to produce chitosan on the basis of the developed methodology is shown. It is found that the resulting chitosan is characterized by low values of ash content, moisture content and the value is within 75–82 %. A further development of the scientific basis for the creation of an efficient, competitive and environmentally safe technologies for utilization mycelial biomass of the fungus Aspergillus Niger with the production of a valuable product is chitosan, which is in contrast to the known allows to reduce production costs by 10–80 % (by using not concentrated solutions of chemicals and low temperature process. This leads to reducing the cost of reagents and electricity. The calculation was performed on indicators such as net present value, internal rate of return and payback period.) The use of the developed technological schemes in practice allows utilization of mycelial waste with the aim of obtaining from them valuable product of chitosan, and to ensure the improvement of ecological situation in the region.


Keywords


chitosan; filamentous waste; processing technology; recycling; Aspergillus Niger

Full Text:

PDF

References


Pochanavanich, P., Suntornsuk, W. (2002). Fungal chitosan production and its characterization. Letters in Applied Microbiology, 35 (1), 17–21. doi: 10.1046/j.1472-765x.2002.01118.x

Hutsuliak, H. D. (2004). Ekoloho-ekonomichni problemy v Ukraini i napriamy yikh vyrishennia. Naukovyi visnyk NLTU Ukrainy, 14.3, 207–214.

Zbirnyk naukovykh statei II-i vseukrainskyi zizd ekolohiv z mizhnarodnoiu uchastiu (2009). Vinnytsia: FOP Danyljuk, 603.

Monin, A. S., Shishkov, N. A. (1991). Globalnye ekologicheskie problemy. Nauki o Zemle. Znanie, 136.

Krasavtsev, V. E. (1999). Krill as promising raw material for the production of chitin in Europe. International conference of the Chitin Society, 1–3.

Kennedy, J., Paterson, M. (1994). Chitin Enzymology. Carbohydrate Polymers, 25 (1), 61–61. doi: 10.1016/0144-8617(94)90165-1

Rane, K. D., Hoover, D. G. (1993). Production of Chitosan by fungi. Food Biotechnology, 7 (1), 11–33. doi: 10.1080/08905439309549843

White, S. A., Farina, P. R., Fulton, I. (1979). Production and isolation of chitosan from Mucor rouxii. Appl Environ Microbiol, 38 (2), 323–328.

Nudga, L., Ganicheva, S., Petrova, V., Bystrova, E., Lvova, E., Galkin, A., Petropavlovsky. G. (1997). Sorption of ions of Cr(III) chitin-glycanova complex isolated from mycelium of the fungus Aspergillus Niger, cultured in different conditions. Journal of applied chemistry, 70 (2), 242–246.

Kogan, G., Machova1, E., Chorvatovicova, D., Slovakova, L. (1997). Chitin-glucan complex of Aspergillus Niger and its derivatives: antimutagenic and antiinfective activity. Proc. of the third Asia-Pacific chitin and chitosan Symposium, Taiwan, 372–379.

Starostina, I. V., Ovcharova, I. V. (2012). Obtaining foam slurry of waste containing protein in a high-frequency electromagnetic field. Modern problems of science and education, 6. Available at: https://www.science-education.ru/pdf/2012/6/647.pdf

Kapoor, A., Viraraghavan, T. (1998). Application of immobilizedaspergillus niger, biomass in the removal of heavy metals from an industrial wastewater. Journal of Environmental Science and Health, Part A, 33 (7), 1507–1514. doi: 10.1080/10934529809376801

Zhao, Z. P., Wang, Z., Wang, S. C. (2003). Formation, charged characteristic and BSA adsorption behavior of carboxymethyl chitosan/PES composite MF membrane. Journal of Membrane Science, 217 (1-2), 151–158. doi: 10.1016/s0376-7388(03)00105-4

Tereshina, V., Memorskaya, A., Feofilova, E., Nemtsev, D., Kozlov, V. (1997). Isolation of polysaccharide complexes from mycelial fungi and determination of their deacetylation degree. Microbiology, 66 (1), 70–75.




DOI: http://dx.doi.org/10.21303/2461-4262.2017.00264

Refbacks

  • There are currently no refbacks.


Bookmark and Share


Copyright (c) 2017 Oksana Yegorova

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

ISSN 2461-4262 (Online), ISSN 2461-4254 (Print)