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Bio-Based, Flexible, and Tough Material Derived from ε-Poly-l-lysine and Fructose via the Maillard Reaction

[Image: see text] We report a bio-based, soft, elastic, and tough material prepared from a mixture of ε-poly-l-lysine (ε-PL) and d-fructose. The obtained complex was insoluble in water, whereas its ingredients had high water solubility. This complex was likely formed via Schiff base formation and su...

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Autores principales: Ushimaru, Kazunori, Morita, Tomotake, Fukuoka, Tokuma
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7495479/
https://www.ncbi.nlm.nih.gov/pubmed/32954127
http://dx.doi.org/10.1021/acsomega.0c01813
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author Ushimaru, Kazunori
Morita, Tomotake
Fukuoka, Tokuma
author_facet Ushimaru, Kazunori
Morita, Tomotake
Fukuoka, Tokuma
author_sort Ushimaru, Kazunori
collection PubMed
description [Image: see text] We report a bio-based, soft, elastic, and tough material prepared from a mixture of ε-poly-l-lysine (ε-PL) and d-fructose. The obtained complex was insoluble in water, whereas its ingredients had high water solubility. This complex was likely formed via Schiff base formation and subsequent rearrangement reactions, that is, the Maillard reaction, because the reaction occurred between reducing sugars and cationic polyelectrolytes having primary and secondary amino groups. The progress of the Maillard reaction was investigated by proton nuclear magnetic resonance spectroscopy and Fourier transform infrared spectroscopy. Mechanical properties of the complexes were evaluated by tensile testing, and the properties of the optimized complex [ε-PL/fructose = 60:40 (w/w), maximum stress = 27.9 MPa, strain at break = 46%, Young’s modulus = 741.6 MPa] resembled those of some petroleum-based plastics. Additionally, the ε-PL/fructose complex displayed antimicrobial activity against Bacillus subtilis. These ε-PL/fructose complexes have biological properties such as antimicrobial activity, low toxicity toward mammals, and biodegradability, which are attributable to the intrinsic nature of ε-PL, as well as enhanced mechanical properties and water resistance compared with pure ε-PL.
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spelling pubmed-74954792020-09-18 Bio-Based, Flexible, and Tough Material Derived from ε-Poly-l-lysine and Fructose via the Maillard Reaction Ushimaru, Kazunori Morita, Tomotake Fukuoka, Tokuma ACS Omega [Image: see text] We report a bio-based, soft, elastic, and tough material prepared from a mixture of ε-poly-l-lysine (ε-PL) and d-fructose. The obtained complex was insoluble in water, whereas its ingredients had high water solubility. This complex was likely formed via Schiff base formation and subsequent rearrangement reactions, that is, the Maillard reaction, because the reaction occurred between reducing sugars and cationic polyelectrolytes having primary and secondary amino groups. The progress of the Maillard reaction was investigated by proton nuclear magnetic resonance spectroscopy and Fourier transform infrared spectroscopy. Mechanical properties of the complexes were evaluated by tensile testing, and the properties of the optimized complex [ε-PL/fructose = 60:40 (w/w), maximum stress = 27.9 MPa, strain at break = 46%, Young’s modulus = 741.6 MPa] resembled those of some petroleum-based plastics. Additionally, the ε-PL/fructose complex displayed antimicrobial activity against Bacillus subtilis. These ε-PL/fructose complexes have biological properties such as antimicrobial activity, low toxicity toward mammals, and biodegradability, which are attributable to the intrinsic nature of ε-PL, as well as enhanced mechanical properties and water resistance compared with pure ε-PL. American Chemical Society 2020-08-31 /pmc/articles/PMC7495479/ /pubmed/32954127 http://dx.doi.org/10.1021/acsomega.0c01813 Text en Copyright © 2020 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Ushimaru, Kazunori
Morita, Tomotake
Fukuoka, Tokuma
Bio-Based, Flexible, and Tough Material Derived from ε-Poly-l-lysine and Fructose via the Maillard Reaction
title Bio-Based, Flexible, and Tough Material Derived from ε-Poly-l-lysine and Fructose via the Maillard Reaction
title_full Bio-Based, Flexible, and Tough Material Derived from ε-Poly-l-lysine and Fructose via the Maillard Reaction
title_fullStr Bio-Based, Flexible, and Tough Material Derived from ε-Poly-l-lysine and Fructose via the Maillard Reaction
title_full_unstemmed Bio-Based, Flexible, and Tough Material Derived from ε-Poly-l-lysine and Fructose via the Maillard Reaction
title_short Bio-Based, Flexible, and Tough Material Derived from ε-Poly-l-lysine and Fructose via the Maillard Reaction
title_sort bio-based, flexible, and tough material derived from ε-poly-l-lysine and fructose via the maillard reaction
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7495479/
https://www.ncbi.nlm.nih.gov/pubmed/32954127
http://dx.doi.org/10.1021/acsomega.0c01813
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