Unhairing animal hides using probiotic Bacteria bacillus subtilis

Authors

  • Анатолій Григорович Данилкович Kyiv National University of Technologies and Design, Str. Nemirovich-Danchenko, 2, Kyiv, Ukraine, 01011, Ukraine
  • Петро Ілліч Гвоздяк Institute of Colloid and Water Chemistry National Academy of Sciences of Ukraine 42, Vernadsky bvd, Kyiv, Ukraine, 03142, Ukraine
  • Оксана Олександрівна Романюк Kyiv National University of Technologies and Design, Str. Nemirovich-Danchenko, 2, Kyiv, Ukraine, 01011, Ukraine
  • Ольга Василівна Ковтуненко Kyiv National University of Technologies and Design, Str. Nemirovich-Danchenko, 2, Kyiv, Ukraine, 01011, Ukraine

DOI:

https://doi.org/10.15587/1729-4061.2013.18200

Keywords:

probiotic bacteria Bacillus subtilis, rabbit hides, soaking and liming processes

Abstract

The most efficient technology of processing natural raw materials into skin and fur is the use of enzyme products for soaking and liming processes. Therefore, the use of bacterial products, which produce enzymes of various functional effects, is considered to be very promising for the above mentioned processes.

Soaking and liming of flint-dried rabbit hides were carried out using probiotic bacreria Bacillus subtilis on 4 samples in a laboratory centrifuge at soaking temperature 36-38°С and working solution рН 6,7-7. Unhairing was made by painting method, except one sample, unhairing of which was made mechanically after having soaked the hides in solution for 36-48 hours.

Due to active action of Bacillus subtilis bacteria, the soaking process was reduced, unhairing was conducted without lime-sulfide painting paste, and the period of semi-finished product softening was decreased by 30 minutes. According to chemical analysis data, the concentration of chrome (III) oxide in spent solution is lower, and according to physical-mechanical tests of hides, the hygrothermal stability reaches its maximal value.

The obtained results prove the prospects of Bacillus subtilis bacteria use in developing effective technologies of soaking and liming processes of leather and fur production.

The technology elaborated allows combining soaking, unhairing, liming and desalting into a one-phase technological process. Advantages of this technology are 2 times faster soaking, comparing to the existing technology, with leather output increased by 20%, and reduction of chromium compounds in spent solutions by 34% that decreases the anthropogenic impact on the environment during its implementation.

Author Biographies

Анатолій Григорович Данилкович, Kyiv National University of Technologies and Design, Str. Nemirovich-Danchenko, 2, Kyiv, Ukraine, 01011

Professor

Department of Technology Leather and Fur

Петро Ілліч Гвоздяк, Institute of Colloid and Water Chemistry National Academy of Sciences of Ukraine 42, Vernadsky bvd, Kyiv, Ukraine, 03142

Professor

Department of sorbtion and biology of water cleaning

Оксана Олександрівна Романюк, Kyiv National University of Technologies and Design, Str. Nemirovich-Danchenko, 2, Kyiv, Ukraine, 01011

Associate professor

Department Technological safety and heat-mass Exchange processes

Ольга Василівна Ковтуненко, Kyiv National University of Technologies and Design, Str. Nemirovich-Danchenko, 2, Kyiv, Ukraine, 01011

Senior Research Fellow

Department of Technology Leather and Fur

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Published

2013-10-28

How to Cite

Данилкович, А. Г., Гвоздяк, П. І., Романюк, О. О., & Ковтуненко, О. В. (2013). Unhairing animal hides using probiotic Bacteria bacillus subtilis. Eastern-European Journal of Enterprise Technologies, 5(6(65), 43–46. https://doi.org/10.15587/1729-4061.2013.18200

Issue

Vol. 5 No. 6(65) (2013): Technology of organic and inorganic substanse

Section

Technology organic and inorganic substances

License

Copyright (c) 2014 Анатолій Григорович Данилкович, Петро Ілліч Гвоздяк, Оксана Олександрівна Романюк, Ольга Василівна Ковтуненко

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