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A Protein-Based Material from a New Approach Using Whole Defatted Larvae, and Its Interaction with Moisture
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology.ORCID iD: 0000-0001-7944-4103
SLU Swedish Univ Agr Sci, Dept Energy & Technol, POB 7032, SE-75007 Uppsala, Sweden..
Univ Lyon 1, Univ Lyon, Ingn Mat Polymeres, CNRS,UMR 5223, 15 Bd Andre Latarjet, F-69622 Villeurbanne, France..
Univ Lyon 1, Univ Lyon, Ingn Mat Polymeres, CNRS,UMR 5223, 15 Bd Andre Latarjet, F-69622 Villeurbanne, France..
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2019 (English)In: Polymers, ISSN 2073-4360, E-ISSN 2073-4360, Vol. 11, no 2, article id 287Article in journal (Refereed) Published
Abstract [en]

A protein-based material created from a new approach using whole defatted larvae of the Black Soldier fly is presented. The larvae turn organic waste into their own biomass with high content of protein and lipids, which can be used as animal feed or for material production. After removing the larva lipid and adding a plasticizer, the ground material was compression molded into plates/films. The lipid, rich in saturated fatty acids, can be used in applications such as lubricants. The amino acids present in the greatest amounts were the essential amino acids aspartic acid/asparagine and glutamic acid/glutamine. Infrared spectroscopy revealed that the protein material had a high amount of strongly hydrogen-bonded beta-sheets, indicative of a highly aggregated protein. To assess the moisture-protein material interactions, the moisture uptake was investigated. The moisture uptake followed a BET type III moisture sorption isotherm, which could be fitted to the Guggenheim, Anderson and de Boer (GAB) equation. GAB, in combination with cluster size analysis, revealed that the water clustered in the material already at a low moisture content and the cluster increased in size with increasing relative humidity. The clustering also led to a peak in moisture diffusivity at an intermediate moisture uptake.

Place, publisher, year, edition, pages
MDPI , 2019. Vol. 11, no 2, article id 287
Keywords [en]
protein, larva, plastic, lipid, Black Soldier fly, moisture sorption
National Category
Polymer Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-246270DOI: 10.3390/polym11020287ISI: 000460296000101Scopus ID: 2-s2.0-85061351298OAI: oai:DiVA.org:kth-246270DiVA, id: diva2:1299253
Note

QC 20190126

Available from: 2019-03-26 Created: 2019-03-26 Last updated: 2019-04-04Bibliographically approved

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Alipour, NazaninHedenqvist, Mikael S.

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