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Exploring Simplified Methods for Insect Chitin Extraction and Application as a Potential Alternative Bioethanol

Mahmoud Kamal1, Eslam Adly1, Sulaiman Ali Alharbi2

  • 1Department of Entomology, Faculty of Science, Ain Shams University, Cairo 11566, Egypt.

Insects
|November 17, 2020
PubMed
Summary

Insect chitin can be simply extracted and fermented by Mucor circinelloides fungi to produce bioethanol. This study demonstrates insect biomass as a viable alternative resource for sustainable bioethanol production.

Keywords:
American cockroachMucor circinelloidesbioethanolbiofuelbiomass conversionchitin extractionsubmerged fermentation

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Area of Science:

  • Biotechnology
  • Biopolymer Science
  • Renewable Energy

Background:

  • Chitin, a biopolymer abundant in insect exoskeletons, is a potential substrate for bioethanol production.
  • Fungal strains of Mucor circinelloides can ferment chitin into bioethanol.
  • Insect biomass offers an alternative resource for sustainable energy production.

Purpose of the Study:

  • To develop simplified methods for extracting insect chitin.
  • To evaluate insect chitin as a substrate for bioethanol production using Mucor circinelloides.
  • To explore insect biomass as a renewable energy source.

Main Methods:

  • Chitin extraction from American cockroach exoskeletons using NaOH.
  • Assessment of chitin purity by comparing physicochemical properties.
  • Submerged fermentation of extracted chitin using Mucor circinelloides strains.

Main Results:

  • High-purity chitin was successfully extracted from insect exoskeletons.
  • Mucor circinelloides 6017 efficiently converted 15 g/L of chitin to 11.22 g/L of bioethanol in 6 days.
  • Achieved 74% bioethanol yield based on initial chitin mass.

Conclusions:

  • Insect chitin is a suitable substrate for direct bioethanol production.
  • Simplified chitin extraction and fermentation offer a promising route for bioethanol generation.
  • Insect biomass represents a valuable and sustainable alternative resource for bioenergy.