Functionalization and Characterization of Bioactive Films Based on HPMC: Influence of Antioxidants Inclusion on Films Properties and Food Preservation ; Fonctionnalisation et caractérisatin de films bioactifs à base d'HPMC : influence de l'introduction d'antioxydants sur les propriétés des films et la conservation des aliments
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Media type:
E-Book
Title:
Functionalization and Characterization of Bioactive Films Based on HPMC: Influence of Antioxidants Inclusion on Films Properties and Food Preservation ; Fonctionnalisation et caractérisatin de films bioactifs à base d'HPMC : influence de l'introduction d'antioxydants sur les propriétés des films et la conservation des aliments
Published:
[Erscheinungsort nicht ermittelbar]: HAL CCSD, 2012
Language:
English
Origination:
University thesis:
Dissertation, HAL CCSD, 2012
Footnote:
Description:
Biodegradable packaging functionalized with natural antioxidants is one of the promising techniques to enhance foods shelf-life, lower use of preservatives in food formations, higher protection of flavours and higher food qualities. Controlled release of these bioactive compounds from packaging to food surface provides longer food stability by continuously librating antioxidants at food surface. The overall objective of the present work was to functionalize the HPMC polymer as colored antioxidant packaging and investigate its suitability as active packaging for unsaturated lipids. Firstly, HPMC films containing different synthetic colours like blue, green, yellow, red and white were tested to chose a suitable color having control against photo-oxidation. Secondly, red synthetic color (showing maximum control against pho-oxidation) was replaced by natural active red compounds including natural red color" (beetroot extract + purple carrot extract), betalains and anthocyanins to produce bioactive food packaging. Mode of incorporation of these active compounds in HPMC matrix and also their potential effects on thermal, mechanical, barrier and structural properties of films were investigated. Controlled release kinetics, antioxidant capacity and light stability of bioactive compounds in HPMC films were also investigated. The overall results showed that successful incorporation of different natural active compounds have capability to improve film properties. The active compounds under discussion have ability to control photo ageing of polymer matrix and HPMC has the capability for being a suitable carrier for antioxidant active packaging for some food products