Physical Properties of Chitosan Films Containing Pomegranate Peel Extracts Obtained by Deep Eutectic Solvents
Pomegranate peel is a byproduct of pomegranate juice production, and is rich in polyphenol compounds. The objective of this study was to investigate the incorporation of pomegranate peel extract in chitosan films. Green deep eutectic solvents (DESs) were used as extraction solvents. Choline chloride...
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MDPI AG
2021-06-01
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| Series: | Foods |
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| Online Access: | https://www.mdpi.com/2304-8158/10/6/1262 |
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| author | Aikaterini Kyriakidou Dimitris P. Makris Athina Lazaridou Costas G. Biliaderis Ioannis Mourtzinos |
| author_facet | Aikaterini Kyriakidou Dimitris P. Makris Athina Lazaridou Costas G. Biliaderis Ioannis Mourtzinos |
| author_sort | Aikaterini Kyriakidou |
| collection | DOAJ |
| description | Pomegranate peel is a byproduct of pomegranate juice production, and is rich in polyphenol compounds. The objective of this study was to investigate the incorporation of pomegranate peel extract in chitosan films. Green deep eutectic solvents (DESs) were used as extraction solvents. Choline chloride (ChCl) and glycerol (Gly) were used as the hydrogen bond acceptor and hydrogen bond donor, respectively; the molar ratio of the DES ingredients, ChCl:Gly, was 1:11. The extraction process was optimized by deploying response surface methodology. Under the optimized conditions, the extraction yield in total polyphenols amounted to 272.98 mg of gallic acid equivalents per g of dry matter and, for total flavonoids, 20.12 mg of quercetin equivalents per g of dry matter, with a liquid to solid ratio of 47 mL g<sup>−1</sup>, time of 70 min, and 30% (<i>v</i>/<i>v</i>) water concentration in the DES. Afterwards, composite chitosan films were prepared by using five different formulations; the DES containing extract was incorporated as a plasticizer in the chitosan films. Specimens of every recipe were submitted to large deformation tensile testing in Texture Analyzer. Furthermore, water sorption behavior and color parameters of the films were determined. |
| first_indexed | 2024-03-10T10:48:09Z |
| format | Article |
| id | doaj.art-cb6143fe1fdc4827a32337fbccd5db4a |
| institution | Directory Open Access Journal |
| issn | 2304-8158 |
| language | English |
| last_indexed | 2024-03-10T10:48:09Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Foods |
| spelling | doaj.art-cb6143fe1fdc4827a32337fbccd5db4a2023-11-21T22:29:39ZengMDPI AGFoods2304-81582021-06-01106126210.3390/foods10061262Physical Properties of Chitosan Films Containing Pomegranate Peel Extracts Obtained by Deep Eutectic SolventsAikaterini Kyriakidou0Dimitris P. Makris1Athina Lazaridou2Costas G. Biliaderis3Ioannis Mourtzinos4Department of Food Science and Technology, Faculty of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceDepartment of Food Science & Nutrition, School of Agricultural Sciences, University of Thessaly, N. Temponera Street, 43100 Karditsa, GreeceDepartment of Food Science and Technology, Faculty of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceDepartment of Food Science and Technology, Faculty of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceDepartment of Food Science and Technology, Faculty of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreecePomegranate peel is a byproduct of pomegranate juice production, and is rich in polyphenol compounds. The objective of this study was to investigate the incorporation of pomegranate peel extract in chitosan films. Green deep eutectic solvents (DESs) were used as extraction solvents. Choline chloride (ChCl) and glycerol (Gly) were used as the hydrogen bond acceptor and hydrogen bond donor, respectively; the molar ratio of the DES ingredients, ChCl:Gly, was 1:11. The extraction process was optimized by deploying response surface methodology. Under the optimized conditions, the extraction yield in total polyphenols amounted to 272.98 mg of gallic acid equivalents per g of dry matter and, for total flavonoids, 20.12 mg of quercetin equivalents per g of dry matter, with a liquid to solid ratio of 47 mL g<sup>−1</sup>, time of 70 min, and 30% (<i>v</i>/<i>v</i>) water concentration in the DES. Afterwards, composite chitosan films were prepared by using five different formulations; the DES containing extract was incorporated as a plasticizer in the chitosan films. Specimens of every recipe were submitted to large deformation tensile testing in Texture Analyzer. Furthermore, water sorption behavior and color parameters of the films were determined.https://www.mdpi.com/2304-8158/10/6/1262deep eutectic solventspomegranate peelextractionpolyphenolschitosan films |
| spellingShingle | Aikaterini Kyriakidou Dimitris P. Makris Athina Lazaridou Costas G. Biliaderis Ioannis Mourtzinos Physical Properties of Chitosan Films Containing Pomegranate Peel Extracts Obtained by Deep Eutectic Solvents Foods deep eutectic solvents pomegranate peel extraction polyphenols chitosan films |
| title | Physical Properties of Chitosan Films Containing Pomegranate Peel Extracts Obtained by Deep Eutectic Solvents |
| title_full | Physical Properties of Chitosan Films Containing Pomegranate Peel Extracts Obtained by Deep Eutectic Solvents |
| title_fullStr | Physical Properties of Chitosan Films Containing Pomegranate Peel Extracts Obtained by Deep Eutectic Solvents |
| title_full_unstemmed | Physical Properties of Chitosan Films Containing Pomegranate Peel Extracts Obtained by Deep Eutectic Solvents |
| title_short | Physical Properties of Chitosan Films Containing Pomegranate Peel Extracts Obtained by Deep Eutectic Solvents |
| title_sort | physical properties of chitosan films containing pomegranate peel extracts obtained by deep eutectic solvents |
| topic | deep eutectic solvents pomegranate peel extraction polyphenols chitosan films |
| url | https://www.mdpi.com/2304-8158/10/6/1262 |
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