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Antifungal Activity of Finished Chromium Tanned Leather Containing Thyme and Tea Tree Essential Oils

Dorota Gendaszewska
Dorota Gendaszewska
, 
Barbara Wionczyk
Barbara Wionczyk
, 
Agata Bednarek
Agata Bednarek
 and 
Paweł Boniecki
Paweł Boniecki
   | Sep 28, 2022
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Article Category: Research Article
Published Online: Sep 28, 2022
Page range: 41 - 45
DOI: https://doi.org/10.2478/ftee-2022-0021
Keywords
© 2022 Dorota Gendaszewska, et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 3.0 Public License.

Fig. 1

Example photo of the microorganisms tested: Aspergillus niger, Chaetomiuum globosum, Candida albicans (KEYENCE VHX 95OF)
Example photo of the microorganisms tested: Aspergillus niger, Chaetomiuum globosum, Candida albicans (KEYENCE VHX 95OF)

Evaluation of the antifungal activity of leather samples III against strains tested

Microorganisms Evaluation of fungal growth in agar medium [−]
Leather unfinished/finished with essential oils
III KON III 1t III 2t III 5t III 1h III 2h III 5h
Aspergillus niger 5 2 0 0 5 5 4
Chaetomium globosum 2 0 0 0 2 2 2
Candida albicans 0 0 0 0 0 0 0

Description of leather samples tested

Description of leather samples tested Code Leather number
Reference leather without an antimicrobial finish I KON I
Leather treated with 1% thyme essential oil I 1t I
Leather treated with 2% thyme essential oil I 2t I
Leather treated with 5% thyme essential oil I 5t I
Leather treated with 1% tea tree essential oil I 1h I
Leather treated with 2% tea tree essential oil I 2h I
Leather treated with 5% tea tree essential oil I 5h I
Reference leather without an antimicrobial finish II KON II
Leather treated with 1% thyme essential oil II 1t II
Leather treated with 2% thyme essential oil II 2t II
Leather treated with 5% thyme essential oil II 5t II
Leather treated with 1% tea tree essential oil II 1h II
Leather treated with 2% tea tree essential oil II 2h II
Leather treated with 5% tea tree essential oil II 5h II
Reference leather without an antimicrobial finish III KON III
Leather treated with 1% thyme essential oil III 1t III
Leather treated with 2% thyme essential oil III 2t III
Leather treated with 5% thyme essential oil III 5t III
Leather treated with 1% tea tree essential oil III 1h III
Leather treated with 2% tea tree essential oil III 2h III
Leather treated with 5% tea tree essential oil III 5h III
Reference leather without an antimicrobial finish IV KON IV
Leather treated with 1% thyme essential oil IV 1t IV
Leather treated with 2% thyme essential oil IV 2t IV
Leather treated with 5% thyme essential oil IV 5t IV
Leather treated with 1% tea tree essential oil IV 1h IV
Leather treated with 2% tea tree essential oil IV 2h IV
Leather treated with 5% tea tree essential oil IV 5h IV

Grading scale for visible antifungal effects

Growth [−] Evaluation of fungal growth in agar medium
0 No visible growth assessed under the microscope (magnification 50x),
1 No visible growth without magnifying devices, clearly visible under the microscope.
2 Visible increase without magnifying devices, covering up to 25% of the examination surface.
3 Visible increase without magnifying devices, covering up to 50% of the examination surface.
4 Significant increase, covering more than 50% of the surface tested.
5 Heavy growth, covering the surface tested.

Evaluation of the antifungal activity of leather samples I against strains tested

Microorganisms Evaluation of fungal growth in agar medium [−]
Leather unfinished/finished with essential oils
I KON I 1t I 2t I 5t I 1h I 2h I 5h
Aspergillus niger 5 5 5 0 5 5 5
Chaetomium globosum 5 5 3 0 5 5 5
Candida albicans 5 5 2 0 5 5 5

Evaluation of the antifungal activity of leather samples II against strains tested

Microorganisms Evaluation of fungal growth in agar medium [−]
Leather unfinished/finished with essential oils
II KON II 1t II 2t II 5t II 1h II 2h II 5h
Aspergillus niger 5 5 5 4 5 5 5
Chaetomium globosum 5 4 4 2 5 5 5
Candida albicans 5 4 4 0 2 5 5

Evaluation of the antifungal activity of leather samples IV against strains tested

Microorganisms Evaluation of fungal growth in agar medium [−]
Leather unfinished/finished with essential oils
IV KON IV 1t IV 2t IV 5t IV 1h IV 2h IV 5h
Aspergillus niger 5 5 4 0 5 5 5
Chaetomium globosum 5 2 0 0 5 5 5
Candida albicans 5 0 0 0 5 0 0
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Language:
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Business and Economics, Business Management, Business Informatics, Process Management, Industrial Chemistry, Cellulose, Paper and Textiles, Polymer Science and Technology, Materials Sciences, Biomaterials and Natural Materials
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