Abstract

Rapid global economy and population increase play a significant role in food waste (FW) production. Improper food waste management is a considerable challenge for the entire world since FW pollutes the environment and risks human and animal health. However, transforming food waste into value-added chemicals is an area of intensive research since they contain organic compounds. To this effect, we investigate the possibility of enhancing the food waste hydrolysis using microorganisms. In this research, FW was first blended and diluted at different concentration ratios (Fw: water) of 2:1,1:1,1:2 and 1:3. After a simple solid-liquid separation, the liquid was hydrolysed by fungi rich in hydrolytic enzymes at their log phases. The moisture content of FW was 15.68 %. This study aims to produce glucose from food waste using the three types of hydrolytic microorganisms: Aspergillus oryzae, aspergillus aculeatus and Candida rugosa. Moreover, we discussed the best ratio variation of microbes towards food waste hydrolysis. This study analysed glucose levels using the DNS method by measuring the absorbance through a spectrophotometer at 540 nm. The results showed that the highest glucose concentration of 16.5 g/l was obtained after 48 hours by mixing all microorganisms using a ratio of 2:1 (FW 2:1 M). The highest glucose (g/l) concentration from a ratio of 2:1 obtained from FW hydrolysis by Candida rugosa, Aspergillus oryzae and Aspergillus aculeatus after 48 hours were 13.05,14.31,15.9, respectively. Therefore, the current finding indicates that hydrolytic microorganisms could save the pretreatment cost of food waste and greatly enhance food waste degradation.

Original languageEnglish
Title of host publication3rd Faculty of Industrial Technology International Congress 2021 International Conference
Subtitle of host publicationEnriching Engineering Science through Collaboration of Multidisciplinary Fields
EditorsIstvan Farkas, Istvan Seres, Mohammad Alexin Putra, Jono Suhartono, Fahmi Arif, Arie Desrianty, Lauditta Irianti
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735443181
DOIs
Publication statusPublished - 24 Feb 2023
Event3rd Faculty of Industrial Technology International Congress: Enriching Engineering Science Through Collaboration of Multidisciplinary Fields, FoITIC 2021 - Bandung, Indonesia
Duration: 28 Oct 202129 Oct 2021

Publication series

NameAIP Conference Proceedings
Volume2772
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference3rd Faculty of Industrial Technology International Congress: Enriching Engineering Science Through Collaboration of Multidisciplinary Fields, FoITIC 2021
Country/TerritoryIndonesia
CityBandung
Period28/10/2129/10/21

Keywords

  • DNS
  • Food waste
  • Glucose
  • Hydrolytic microorganisms

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