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Physical pretreatment of food waste for reducing hydrogen-consuming bacteria

Food waste is a complex organic substrate that is also potentially hosting a variety of microbial species. In Malaysia, the large amount of food waste that is available can cause health and environmental issues due to inadequate management that has created problems such as greenhouse gas emission...

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Main Authors: Nazira Mahmud, Nazira, M. H. Ting, Ting Mee Hee, Ansari, Nor Faezah
Format: Article
Language:English
Published: Penerbit UMP 2021
Subjects:
Q Science (General)
Online Access:http://irep.iium.edu.my/90186/10/90186_Physical%20pretreatment%20of%20food%20waste%20for%20reducing%20hydrogen-consuming%20bacteria.pdf
http://irep.iium.edu.my/90186/
https://journal.ump.edu.my/cst/article/view/6445
https://doi.org/10.15282/cst.v1i1.6445
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spelling my.iium.irep.901862021-06-15T06:36:27Z http://irep.iium.edu.my/90186/ Physical pretreatment of food waste for reducing hydrogen-consuming bacteria Nazira Mahmud, Nazira M. H. Ting, Ting Mee Hee Ansari, Nor Faezah Q Science (General) Food waste is a complex organic substrate that is also potentially hosting a variety of microbial species. In Malaysia, the large amount of food waste that is available can cause health and environmental issues due to inadequate management that has created problems such as greenhouse gas emission and release of wastewater. The utilization of food waste for value-added products is an attractive solution to reduce the accumulation of food waste, however, demands a pretreatment step to prepare the food waste for a specific production process. One interesting application of food waste is for the production of biohydrogen, which requires food waste to be free from hydrogen-consuming bacteria (HCB). This study aims to investigate the effect of physical pretreatment on food waste and suggest the best pretreatment parameters. Food waste samples were pretreated with heat at 70 °C, 80 °C and 90 °C for 15 and 30 minutes and UV radiation for 10, 15 and 30 minutes before being cultured in aerobic condition. The reduction in aerobic bacteria was measured. Heat pretreatment at 70 °C for 15 and 30 minutes could be considered as the best pretreatment compared to the other since it recorded the highest reducing sugar concentration. Heat pretreatment at 70 °C for 15 and 30 minutes and UV radiation pretreatment for 15 minutes had a bactericidal effect and able to remove HCB. There is a high possibility that bacteria 2, 7 and 8 were hydrogen-producing bacteria (HPB). Penerbit UMP 2021-05-12 Article PeerReviewed application/pdf en http://irep.iium.edu.my/90186/10/90186_Physical%20pretreatment%20of%20food%20waste%20for%20reducing%20hydrogen-consuming%20bacteria.pdf Nazira Mahmud, Nazira and M. H. Ting, Ting Mee Hee and Ansari, Nor Faezah (2021) Physical pretreatment of food waste for reducing hydrogen-consuming bacteria. Current Science and Technology, 1 (1). pp. 1-8. E-ISSN 2785-8804 https://journal.ump.edu.my/cst/article/view/6445 https://doi.org/10.15282/cst.v1i1.6445
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
topic Q Science (General)
spellingShingle Q Science (General)
Nazira Mahmud, Nazira
M. H. Ting, Ting Mee Hee
Ansari, Nor Faezah
Physical pretreatment of food waste for reducing hydrogen-consuming bacteria
description Food waste is a complex organic substrate that is also potentially hosting a variety of microbial species. In Malaysia, the large amount of food waste that is available can cause health and environmental issues due to inadequate management that has created problems such as greenhouse gas emission and release of wastewater. The utilization of food waste for value-added products is an attractive solution to reduce the accumulation of food waste, however, demands a pretreatment step to prepare the food waste for a specific production process. One interesting application of food waste is for the production of biohydrogen, which requires food waste to be free from hydrogen-consuming bacteria (HCB). This study aims to investigate the effect of physical pretreatment on food waste and suggest the best pretreatment parameters. Food waste samples were pretreated with heat at 70 °C, 80 °C and 90 °C for 15 and 30 minutes and UV radiation for 10, 15 and 30 minutes before being cultured in aerobic condition. The reduction in aerobic bacteria was measured. Heat pretreatment at 70 °C for 15 and 30 minutes could be considered as the best pretreatment compared to the other since it recorded the highest reducing sugar concentration. Heat pretreatment at 70 °C for 15 and 30 minutes and UV radiation pretreatment for 15 minutes had a bactericidal effect and able to remove HCB. There is a high possibility that bacteria 2, 7 and 8 were hydrogen-producing bacteria (HPB).
format Article
author Nazira Mahmud, Nazira
M. H. Ting, Ting Mee Hee
Ansari, Nor Faezah
author_facet Nazira Mahmud, Nazira
M. H. Ting, Ting Mee Hee
Ansari, Nor Faezah
author_sort Nazira Mahmud, Nazira
title Physical pretreatment of food waste for reducing hydrogen-consuming bacteria
title_short Physical pretreatment of food waste for reducing hydrogen-consuming bacteria
title_full Physical pretreatment of food waste for reducing hydrogen-consuming bacteria
title_fullStr Physical pretreatment of food waste for reducing hydrogen-consuming bacteria
title_full_unstemmed Physical pretreatment of food waste for reducing hydrogen-consuming bacteria
title_sort physical pretreatment of food waste for reducing hydrogen-consuming bacteria
publisher Penerbit UMP
publishDate 2021
url http://irep.iium.edu.my/90186/10/90186_Physical%20pretreatment%20of%20food%20waste%20for%20reducing%20hydrogen-consuming%20bacteria.pdf
http://irep.iium.edu.my/90186/
https://journal.ump.edu.my/cst/article/view/6445
https://doi.org/10.15282/cst.v1i1.6445
_version_ 1703960209755471872
score 13.211869

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