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  1. Article: Halochromic and antioxidant capacity of smart films of chitosan/chitin nanocrystals with curcuma oil and anthocyanins

    Fernández-Marín, Rut / Fernandes, Susana C.M. / Sánchez, Mª Ángeles Andrés / Labidi, Jalel

    Food hydrocolloids. 2022 Feb., v. 123

    2022  

    Abstract: Curcuma longa L. essential oil and anthocyanin extracts contain bioactive compounds such as antioxidant properties and their pigments are able to change color when exposed to different pH or ammonium gas. In this context, the objective of the present ... ...

    Abstract Curcuma longa L. essential oil and anthocyanin extracts contain bioactive compounds such as antioxidant properties and their pigments are able to change color when exposed to different pH or ammonium gas. In this context, the objective of the present work was to develop pH-sensitive intelligent films by adding curcuma oil (composed of essential oils and pigments) and anthocyanin extracts to a chitosan matrix reinforced with alpha-chitin nanocrystals. The incorporation of curcuma oil, anthocyanins and nanocrystals enhanced the mechanical properties and hydrophobicity; and, decreased water solubility and moisture content. In addition, the films also showed almost total blocking against UV/Vis light at wavelengths below 550 nm. Interestingly, the films were at the same time antioxidant, and sensitive to color change when exposed to ammonia gas and different pH solutions, with greater variations observed when higher concentrations of curcuma oil were added. Hence, these results revealed the potential of these films as intelligent food packaging applications.
    Keywords Curcuma longa ; ammonia ; ammonium ; anthocyanins ; antioxidant activity ; antioxidants ; chitin ; chitosan ; color ; essential oils ; hydrocolloids ; hydrophobicity ; nanocrystals ; oils ; pH ; water content ; water solubility
    Language English
    Dates of publication 2022-02
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 742742-6
    ISSN 1873-7137 ; 0268-005X
    ISSN (online) 1873-7137
    ISSN 0268-005X
    DOI 10.1016/j.foodhyd.2021.107119
    Database NAL-Catalogue (AGRICOLA)

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  2. Article ; Online: Hindfoot motion through helical axis image-based on dynamic CT scan using an original simulated weightbearing device.

    Tejero, Sergio / Fernández-Marín, Reyes / González-Martín, David / Vallejo-Márquez, Mercedes / Paulano-Godino, Félix / Herrera-Pérez, Mario

    Foot and ankle surgery : official journal of the European Society of Foot and Ankle Surgeons

    2023  Volume 29, Issue 7, Page(s) 531–537

    MeSH term(s) Humans ; Foot ; Tomography, X-Ray Computed/methods ; Subtalar Joint/diagnostic imaging ; Ankle Joint/diagnostic imaging ; Weight-Bearing ; Range of Motion, Articular ; Biomechanical Phenomena
    Language English
    Publishing date 2023-02-04
    Publishing country France
    Document type Observational Study ; Journal Article
    ZDB-ID 1424533-4
    ISSN 1460-9584 ; 1268-7731
    ISSN (online) 1460-9584
    ISSN 1268-7731
    DOI 10.1016/j.fas.2023.02.001
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  3. Article ; Online: Microwave-Assisted Extraction of

    Fernández-Marín, Rut / Fernandes, Susana C M / Andrés, María A / Labidi, Jalel

    Molecules (Basel, Switzerland)

    2021  Volume 26, Issue 6

    Abstract: Curcuma root ( ...

    Abstract Curcuma root (
    MeSH term(s) Anti-Inflammatory Agents ; Antioxidants ; Curcuma/chemistry ; Ethanol/chemistry ; Microwaves ; Phenols ; Plant Extracts/chemistry ; Plant Extracts/isolation & purification
    Chemical Substances Anti-Inflammatory Agents ; Antioxidants ; Phenols ; Plant Extracts ; Ethanol (3K9958V90M) ; turmeric extract (856YO1Z64F)
    Language English
    Publishing date 2021-03-10
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules26061516
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Understanding the effects of copolymerized cellulose nanofibers and diatomite nanocomposite on blend chitosan films.

    Mujtaba, Muhammad / Fernández-Marín, Rut / Robles, Eduardo / Labidi, Jalel / Yilmaz, Bahar Akyuz / Nefzi, Houwaida

    Carbohydrate polymers

    2021  Volume 271, Page(s) 118424

    Abstract: Chitosan films lack various important physicochemical properties and need to be supplemented with reinforcing agents to bridge the gap. Herein, we have produced chitosan composite films supplemented with copolymerized (with polyacrylonitrile monomers) ... ...

    Abstract Chitosan films lack various important physicochemical properties and need to be supplemented with reinforcing agents to bridge the gap. Herein, we have produced chitosan composite films supplemented with copolymerized (with polyacrylonitrile monomers) cellulose nanofibers and diatomite nanocomposite at different concentrations. The incorporation of CNFs and diatomite enhanced the physicochemical properties of the films. The mechanical characteristics and hydrophobicity of the films were observed to be improved after incorporating the copolymerized CNFs/diatomite composite at different concentrations (CNFs: 1%, 2% and 5%; diatomite: 10% and 30%). The antioxidant activity gradually increased with an increasing concentration (1-5% and 10-30%) of copolymerized CNFs/diatomite composite in the chitosan matrix. Moreover, the water solubility decreased from 30% for chitosan control film (CH-0) to 21.06% for films containing 30% diatomite and 5% CNFs (CNFs-D30-5). The scanning electron micrographs showed an overall uniform distribution of copolymerized CNFs/diatomite composite in the chitosan matrix with punctual agglomerations.
    MeSH term(s) Antioxidants/chemistry ; Cellulose/chemistry ; Chitosan/chemistry ; Diatomaceous Earth/chemistry ; Food Packaging ; Materials Testing ; Membranes, Artificial ; Nanocomposites/chemistry ; Nanofibers/chemistry ; Optics and Photonics ; Solubility ; Tensile Strength ; Transition Temperature
    Chemical Substances Antioxidants ; Membranes, Artificial ; Diatomaceous Earth (61790-53-2) ; diatomite (68855-54-9) ; Cellulose (9004-34-6) ; Chitosan (9012-76-4)
    Language English
    Publishing date 2021-07-13
    Publishing country England
    Document type Journal Article
    ZDB-ID 1501516-6
    ISSN 1879-1344 ; 0144-8617
    ISSN (online) 1879-1344
    ISSN 0144-8617
    DOI 10.1016/j.carbpol.2021.118424
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Using α-chitin nanocrystals to improve the final properties of poly (vinyl alcohol) films with Origanum vulgare essential oil

    Fernández-Marín, Rut / Labidi, Jalel / Andrés, María Ángeles / Fernandes, Susana C.M

    Polymer degradation and stability. 2020 Sept., v. 179

    2020  

    Abstract: In the present work, nanocomposite films based on poly(vinyl alcohol) (PVA) containing different amounts of Origanum vulgare essential oil (OEO, 0, 0.5, 1, 1.5 and 2% v/v) were reinforced with 0.5% (w/v) of alphachitin nanocrystals (α-CHNC, from shrimp ... ...

    Abstract -In the present work, nanocomposite films based on poly(vinyl alcohol) (PVA) containing different amounts of Origanum vulgare essential oil (OEO, 0, 0.5, 1, 1.5 and 2% v/v) were reinforced with 0.5% (w/v) of alphachitin nanocrystals (α-CHNC, from shrimp and from lobster) and prepared by solvent casting. Another set of films was prepared without α –CHNC to assess the effect of the nanocrystals on the final properties of the films. The obtained nanocomposite films were homogeneous and showed better thermal stability and mechanical properties. After exposure the nanocomposite films to ultraviolet radiation, the obtained data revealed that the presence of α-CHNC into the materials has a retarding effect on their loss of mechanical properties. It was also shown that the antioxidant activity and the total phenolic content of the materials increased with the augmentation of OEO and with the antioxidant release time. Interestingly, the nanocomposite films made of chitin nanocrystals from shrimp showed better total phenolic content than the unfilled films and the nanocomposite films made of chitin nanocrystals from lobster over the first 48 h. Henceforward, this study demonstrated the potential of the nanocomposite films based on PVA, OEO and reinforced with α-CHNC for active food-packaging applications.
    Keywords Origanum vulgare ; antioxidant activity ; antioxidants ; chitin ; degradation ; essential oils ; lobsters ; nanocomposites ; nanocrystals ; shrimp ; solvents ; thermal stability ; ultraviolet radiation
    Language English
    Dates of publication 2020-09
    Publishing place Elsevier Ltd
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 1502217-1
    ISSN 0141-3910
    ISSN 0141-3910
    DOI 10.1016/j.polymdegradstab.2020.109227
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  6. Article: Halochromic and antioxidant capacity of smart films of chitosan/chitin nanocrystals with curcuma oil and anthocyanins

    Fernández-Marín, Rut / Fernandes, Susana C. M. / Sánchez, M. Ángeles Andrés / Labidi, Jalel

    Food hydrocolloids

    2022  Volume 123, Issue -, Page(s) 107119

    Language English
    Document type Article
    ZDB-ID 742742-6
    ISSN 0268-005X
    Database Current Contents Nutrition, Environment, Agriculture

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  7. Article ; Online: Effect of Deterpenated

    Fernández-Marín, Rut / Mujtaba, Muhammad / Cansaran-Duman, Demet / Ben Salha, Ghada / Andrés Sánchez, Mª Ángeles / Labidi, Jalel / Fernandes, Susana C M

    Polymers

    2021  Volume 13, Issue 9

    Abstract: Herein, the effect of three deterpenated fractions ... ...

    Abstract Herein, the effect of three deterpenated fractions from
    Language English
    Publishing date 2021-05-07
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2527146-5
    ISSN 2073-4360 ; 2073-4360
    ISSN (online) 2073-4360
    ISSN 2073-4360
    DOI 10.3390/polym13091507
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  8. Article ; Online: Eco-friendly isolation and characterization of nanochitin from different origins by microwave irradiation: Optimization using response surface methodology.

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

    International journal of biological macromolecules

    2021  Volume 186, Page(s) 218–226

    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 ... ...

    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.
    MeSH term(s) Animals ; Carbohydrate Conformation ; Chemical Fractionation ; Chitin/isolation & purification ; Decapodiformes/chemistry ; Food Handling ; Green Chemistry Technology ; Hydrochloric Acid/chemistry ; Hydrogen-Ion Concentration ; Hydrolysis ; Microwaves ; Nanofibers ; Nanoparticles ; Nephropidae/chemistry ; Penaeidae/chemistry ; Seafood ; Structure-Activity Relationship ; Time Factors ; Waste Products
    Chemical Substances Waste Products ; Chitin (1398-61-4) ; Hydrochloric Acid (QTT17582CB)
    Language English
    Publishing date 2021-07-09
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 282732-3
    ISSN 1879-0003 ; 0141-8130
    ISSN (online) 1879-0003
    ISSN 0141-8130
    DOI 10.1016/j.ijbiomac.2021.07.048
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.B 2374: Show issues Location:
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  9. Article: Eco-friendly isolation and characterization of nanochitin from different origins by microwave irradiation: Optimization using response surface methodology

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

    International journal of biological macromolecules. 2021 Sept. 01, v. 186

    2021  

    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 ... ...

    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.
    Keywords acid hydrolysis ; biocompatibility ; biodegradability ; chitin ; energy ; experimental design ; lobsters ; microwave radiation ; nanocrystals ; nanofibers ; response surface methodology ; shrimp ; squid ; thermal stability ; wastes
    Language English
    Dates of publication 2021-0901
    Size p. 218-226.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 282732-3
    ISSN 1879-0003 ; 0141-8130
    ISSN (online) 1879-0003
    ISSN 0141-8130
    DOI 10.1016/j.ijbiomac.2021.07.048
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  10. Article ; Online: Contributions of Women in Recent Research on Biopolymer Science.

    Veettil, Unnimaya Thalakkale / Olza, Sheila / Brugerolle de Fraissinette, Nelly / Bascans, Elodie / Castejón, Natalia / Adrien, Amandine / Fernández-Marín, Rut / Nardin, Corinne / Fernandes, Susana C M

    Polymers

    2022  Volume 14, Issue 7

    Abstract: Nowadays, biopolymers are playing a fundamental role in our society because of the environmental issues and concerns associated with synthetic polymers. The aim of this Special Issue entitled 'Women in Polymer Science and Technology: Biopolymers' is ... ...

    Abstract Nowadays, biopolymers are playing a fundamental role in our society because of the environmental issues and concerns associated with synthetic polymers. The aim of this Special Issue entitled 'Women in Polymer Science and Technology: Biopolymers' is highlighting the work designed and developed by women on biopolymer science and technology. In this context, this short review aims to provide an introduction to this Special Issue by highlighting some recent contributions of women around the world on the particular topic of biopolymer science and technology during the last 20 years. In the first place, it highlights a selection of important works performed on a number of well-studied natural polymers, namely, agar, chitin, chitosan, cellulose, and collagen. Secondly, it gives an insight into the discovery of new polysaccharides and enzymes that have a role in their synthesis and in their degradation. These contributions will be paving the way for the next generation of female and male scientists on this topic.
    Language English
    Publishing date 2022-03-30
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2527146-5
    ISSN 2073-4360 ; 2073-4360
    ISSN (online) 2073-4360
    ISSN 2073-4360
    DOI 10.3390/polym14071420
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