Reducing off-Flavour in Commercially Available Polyhydroxyalkanoate Materials by Autooxidation through Compounding with Organoclays
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Title: | Reducing off-Flavour in Commercially Available Polyhydroxyalkanoate Materials by Autooxidation through Compounding with Organoclays |
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Authors: | García-Quiles, Lidia | Valdés, Arantzazu | Fernández Cuello, Ángel | Jiménez, Alfonso | Garrigós, María del Carmen | Castell, Pere |
Research Group/s: | Análisis de Polímeros y Nanomateriales |
Center, Department or Service: | Universidad de Alicante. Departamento de Química Analítica, Nutrición y Bromatología |
Keywords: | Biopolymers | Nanoclays | Bio-nanocomposites | Extrusion-compounding | Polyhydroxyalkanoates | Thermal properties | Microstructure | Volatiles | Autoxidation | Thermal gravimetric analysis | Scanning electron microscope | Headspace solid phase microextraction |
Knowledge Area: | Química Analítica | Nutrición y Bromatología |
Issue Date: | 31-May-2019 |
Publisher: | MDPI |
Citation: | García-Quiles L, Valdés A, Fernández Cuello Á, Jiménez A, Garrigós MC, Castell P. Reducing off-Flavour in Commercially Available Polyhydroxyalkanoate Materials by Autooxidation through Compounding with Organoclays. Polymers. 2019; 11(6):945. doi:10.3390/polym11060945 |
Abstract: | Polyhydroxyalkanoates (PHAs) are nowadays considered competent candidates to replace traditional plastics in several market sectors. However, commercial PHA materials exhibit unsatisfactory smells that can negatively affect the quality of the final product. The cause of this typical rancid odour is attributed to oxidized cell membrane glycolipids, coming from Gram-negative production strains, which remain frequently attached to PHAs granules after the extraction stage. The aim of this research is the development of customised PHA bio-nano-composites for industrial applications containing organomodified nanoclays with high adsorbance properties able to capture volatile compounds responsible for the displeasing fragrance. To this end, a methodology for the detection and identification of the key volatiles released due to oxidative degradation of PHAs has been established using a headspace solid-phase microextraction technique. We report the development of nine bio-nano-composite materials based on three types of commercial PHA matrices loaded with three species of nanoclays which represent a different polar behaviour. It has been demonstrated that although the reached outcoming effect depends on the volatile nature, natural sepiolite might result in the most versatile candidate for any the PHA matrices selected. |
Sponsor: | The authors gratefully acknowledge the Government of Aragón (DGA) under the project T08_17R (I+AITIIP) for support and financial aid for this publication. |
URI: | http://hdl.handle.net/10045/92657 |
ISSN: | 2073-4360 |
DOI: | 10.3390/polym11060945 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
Peer Review: | si |
Publisher version: | https://doi.org/10.3390/polym11060945 |
Appears in Collections: | INV - NANOBIOPOL - Artículos de Revistas |
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File | Description | Size | Format | |
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2019_Garcia-Quiles_etal_Polymers.pdf | 1,04 MB | Adobe PDF | Open Preview | |
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