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3 results on '"beta-chitin nanofibres"'

1. Eco-friendly isolation and characterization of nanochitin from different origins by microwave irradiation: Optimization using response surface methodology.

Author

Fernández-Marín, Rut, Hernández-Ramos, Fabio, Salaberria, Asier M., Andrés, Mª. Ángeles, Labidi, Jalel, and Fernandes, Susana C.M.

Subjects
*CHITIN, *RESPONSE surfaces (Statistics), *SHRIMPS, *MICROWAVES, *IRRADIATION, *THERMAL stability
Abstract

The extraction of nanochitin from marine waste has attracted great industrial interest due to its unique properties, namely biodegradability, biocompatibility and as a functional reinforcing agent. Conventional acid hydrolysis isolation of nanochitin requires high temperatures and acid concentration, time and energy. Herein, for the first time, microwave irradiation method was used as an eco-friendly approach to isolate nanochitin from different sources. The isolation conditions were optimized through an experimental Box-Behnken design using surface response methodology. The data showed optimal conditions of 1 M HCl, 10.00 min and 124.75 W to obtain lobster nanocrystals; 1 M HCl, 14.34 min and 50.21 W to obtain shrimp nanocrystals; and 1 M HCl, 29.08 min and 54.08 W to obtain squid pen nanofibres, reducing time and HCl concentration. The obtained isolation yields where of 85.30, 79.92 and 80.59 % for lobster, shrimp and squid, respectively. The morphology of the nanochitins was dependent of the chitin origin, and the lengths of the nanochitins were of 314.74, 386.12 and > 900 nm for lobster, shrimp and squid pen, respectively. The thermal stability of the ensuing nanochitins was maintained after treatment. The results showed that nanochitin could be obtained by using an eco-friendly approach like microwave irradiation. • MAE technique is applied for the first time to isolate both α and β nanochitins. • Box Behnken design optimizes isolation yield of α and β nanochitins. • MAE technique reduces time and HCl concentration in α and β nanochitins isolation. • MAE does not alter chemical and morphological properties of α and β nanochitins. • AFM shows that chitin nanocrystals and nanofibres isolation was successful. [ABSTRACT FROM AUTHOR]

Published
2021
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2. Eco-friendly isolation and characterization of nanochitin from different origins by microwave irradiation: Optimization using response surface methodology

Author

Fabio Hernández-Ramos, Rut Fernández-Marín, Susana C. M. Fernandes, Ma. Ángeles de Andrés, Asier M. Salaberria, and Jalel Labidi

Subjects
Time Factors, Food Handling, media_common.quotation_subject, Nanofibers, Library science, Chitin, Chemical Fractionation, Biochemistry, Structure-Activity Relationship, Penaeidae, Structural Biology, Political science, Gratitude, Carbohydrate Conformation, Animals, Microwaves, microwave irradiation, Molecular Biology, media_common, Waste Products, Hydrolysis, Decapodiformes, Green Chemistry Technology, General Medicine, Hydrogen-Ion Concentration, Nephropidae, alpha-chitin nanocrystals, Seafood, beta-chitin nanofibres, General partnership, Microwave irradiation, Nanoparticles, Hydrochloric Acid
Abstract

[EN] The extraction of nanochitin from marine waste has attracted great industrial interest due to its unique properties, namely biodegradability, biocompatibility and as a functional reinforcing agent. Conventional acid hydrolysis isolation of nanochitin requires high temperatures and acid concentration, time and energy. Herein, for the first time, microwave irradiation method was used as an eco-friendly approach to isolate nanochitin from different sources. The isolation conditions were optimized through an experimental Box-Behnken design using surface response methodology. The data showed optimal conditions of 1 M HCl, 10.00 min and 124.75 W to obtain lobster nanocrystals; 1 M HCl, 14.34 min and 50.21 W to obtain shrimp nanocrystals; and 1 M HCl, 29.08 min and 54.08 W to obtain squid pen nanofibres, reducing time and HCl concentration. The obtained isolation yields where of 85.30, 79.92 and 80.59 % for lobster, shrimp and squid, respectively. The morphology of the nanochitins was dependent of the chitin origin, and the lengths of the nanochitins were of 314.74, 386.12 and > 900 nm for lobster, shrimp and squid pen, respectively. The thermal stability of the ensuing nanochitins was maintained after treatment. The results showed that nanochitin could be obtained by using an eco-friendly approach like microwave irradiation. The authors would like to thank the Basque Government (scholarship of young researchers training and project IT1008-16) for supporting financially this research and their gratitude for technical and human support provided by SGIker (UPV/EHU/ERDF, EU). S.C.M.F. is the recipient of an E2S UPPA Research Partnership Chair (MANTA: Marine Materials) supported by the “Investissements d’Avenir” French program managed by ANR (ANR-16-IDEX-0002), the R ́egion Nouvelle-Aquitaine and the Communaut ́e d’Agglom ́eration du Pays Basque, France.

Published
2021
Full Text
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3. Eco-friendly isolation and characterization of nanochitin from different origins by microwave irradiation: optimization using response surface methodology

Author

Ingeniería química y del medio ambiente, Ingeniaritza kimikoa eta ingurumenaren ingeniaritza, Fernández Marín, Rut, Hernández Ramos, Fabio, Martínez Salaberria, Asier, Andrés Sánchez, María de los Ángeles, Labidi Bouchrika, Jalel, Fernandes, Susana C. M., Ingeniería química y del medio ambiente, Ingeniaritza kimikoa eta ingurumenaren ingeniaritza, Fernández Marín, Rut, Hernández Ramos, Fabio, Martínez Salaberria, Asier, Andrés Sánchez, María de los Ángeles, Labidi Bouchrika, Jalel, and Fernandes, Susana C. M.

Abstract

[EN] The extraction of nanochitin from marine waste has attracted great industrial interest due to its unique properties, namely biodegradability, biocompatibility and as a functional reinforcing agent. Conventional acid hydrolysis isolation of nanochitin requires high temperatures and acid concentration, time and energy. Herein, for the first time, microwave irradiation method was used as an eco-friendly approach to isolate nanochitin from different sources. The isolation conditions were optimized through an experimental Box-Behnken design using surface response methodology. The data showed optimal conditions of 1 M HCl, 10.00 min and 124.75 W to obtain lobster nanocrystals; 1 M HCl, 14.34 min and 50.21 W to obtain shrimp nanocrystals; and 1 M HCl, 29.08 min and 54.08 W to obtain squid pen nanofibres, reducing time and HCl concentration. The obtained isolation yields where of 85.30, 79.92 and 80.59 % for lobster, shrimp and squid, respectively. The morphology of the nanochitins was dependent of the chitin origin, and the lengths of the nanochitins were of 314.74, 386.12 and > 900 nm for lobster, shrimp and squid pen, respectively. The thermal stability of the ensuing nanochitins was maintained after treatment. The results showed that nanochitin could be obtained by using an eco-friendly approach like microwave irradiation.

Published
2021

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