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Feuzing F, Mbakidi JP, Pontoire B, Quéveau D, Roelens G, Lourdin D, Bouquillon S, Leroy E. Melt processing of paramylon using a water:ionic liquid mixture as plasticizer. Carbohydr Polym 2023; 306:120607. [PMID: 36746572 DOI: 10.1016/j.carbpol.2023.120607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 01/13/2023] [Accepted: 01/17/2023] [Indexed: 01/21/2023]
Abstract
Paramylon is a linear β-1,3-glucan produced by the microalgae Euglena Gracilis. Due to its native crystalline structure, involving hexagonally packed triple helices, paramylon is neither water soluble nor thermoplastic. While such properties are generally obtained by chemical modification of paramylon, the present work demonstrates that using ionic liquid/water mixtures as solvents or plasticizers may be an alternative: A mixture of water with cholinium glycinate (40:60) allowed: i) obtaining paramylon solutions at 80 °C, that form reversible ionogels upon cooling at 20 °C, when used as a solvent, and ii) the thermomechanical processing of paramylon below 100 °C by extrusion and hot-press into transparent films, when used as a plasticizer. The thermoplastic paramylon obtained consists of an amorphous matrix, self-reinforced by oriented triple helices packed as nanofibers. This results in a storage modulus ranging from 300 to 450 MPa at 25 °C, depending on the plasticizer content, and in a tensile strain at break of 27 %. For storage times larger than 1 month, a recrystallization of paramylon is observed, with an unidentified crystalline structure different from the native one. Recrystallized samples can be reprocessed into amorphous films by hot pressing.
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Affiliation(s)
- Frédérica Feuzing
- Université de Nantes, Oniris, CNRS, GEPEA, UMR 6144, F- 44470 Carquefou, France; Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, Université de Reims Champagne-Ardenne, BP 1039, 51687 Reims Cedex, France
| | - Jean Pierre Mbakidi
- Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, Université de Reims Champagne-Ardenne, BP 1039, 51687 Reims Cedex, France
| | - Bruno Pontoire
- Biopolymers Interactions Assemblies Research Unit 1268 (BIA), INRAE, Rue de la Géraudière, 44316 Nantes, France
| | - Delphine Quéveau
- Université de Nantes, Oniris, CNRS, GEPEA, UMR 6144, F- 44470 Carquefou, France
| | - Guillaume Roelens
- Université de Nantes, Oniris, CNRS, GEPEA, UMR 6144, F- 44470 Carquefou, France
| | - Denis Lourdin
- Biopolymers Interactions Assemblies Research Unit 1268 (BIA), INRAE, Rue de la Géraudière, 44316 Nantes, France
| | - Sandrine Bouquillon
- Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, Université de Reims Champagne-Ardenne, BP 1039, 51687 Reims Cedex, France
| | - Eric Leroy
- Université de Nantes, Oniris, CNRS, GEPEA, UMR 6144, F- 44470 Carquefou, France.
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Feuzing F, Mbakidi JP, Marchal L, Bouquillon S, Leroy E. A review of paramylon processing routes from microalga biomass to non-derivatized and chemically modified products. Carbohydr Polym 2022; 288:119181. [PMID: 35450615 DOI: 10.1016/j.carbpol.2022.119181] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 01/04/2022] [Accepted: 01/21/2022] [Indexed: 11/02/2022]
Abstract
Paramylon is a linear β-1,3-glucan, similar to curdlan, produced as intracellular granules by the microalga Euglena gracilis, a highly versatile and robust strain, able to grow under various trophic conditions, with valorization of CO2, wastewaters, or food byproducts as nutrients. This review focuses in particular on the various processing routes leading to new potential paramylon based products. Due to its crystalline structure, involving triple helices stabilized by internal intermolecular hydrogen bonds, paramylon is neither water-soluble nor thermoplastic. The few solvents able to disrupt the triple helices, and to fully solubilize the polymer as random coils, allow non derivatizing shaping into films, fibers, and even nanofibers by a specific self-assembly mechanism. Chemical modification in homogeneous or heterogeneous conditions is also possible. The non-selective or regioselective substitution of the hydroxyl groups of glucosidic units leads to water-soluble ionic derivatives and thermoplastic paramylon esters with foreseen applications ranging from health to bioplastics.
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Affiliation(s)
- Frédérica Feuzing
- Université de Nantes, Oniris, CNRS, GEPEA, UMR 6144, F- 44470 Carquefou, France; Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, Université de Reims Champagne-Ardenne, BP 1039, 51687 Reims Cedex, France
| | - Jean Pierre Mbakidi
- Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, Université de Reims Champagne-Ardenne, BP 1039, 51687 Reims Cedex, France
| | - Luc Marchal
- Université de Nantes, Oniris, CNRS, GEPEA, UMR 6144, F- 44470 Carquefou, France
| | - Sandrine Bouquillon
- Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, Université de Reims Champagne-Ardenne, BP 1039, 51687 Reims Cedex, France
| | - Eric Leroy
- Université de Nantes, Oniris, CNRS, GEPEA, UMR 6144, F- 44470 Carquefou, France.
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Granet R, Faure R, Ndong Ntoutoume GMA, Mbakidi JP, Leger DY, Liagre B, Sol V. Enhanced cytotoxicity of gold porphyrin complexes after inclusion in cyclodextrin scaffolds adsorbed on polyethyleneimine-coated gold nanoparticles. Bioorg Med Chem Lett 2019; 29:1065-1068. [DOI: 10.1016/j.bmcl.2019.03.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 03/02/2019] [Accepted: 03/03/2019] [Indexed: 12/11/2022]
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Ndong Ntoutoume GMA, Granet R, Mbakidi JP, Brégier F, Léger DY, Fidanzi-Dugas C, Lequart V, Joly N, Liagre B, Chaleix V, Sol V. Development of curcumin-cyclodextrin/cellulose nanocrystals complexes: New anticancer drug delivery systems. Bioorg Med Chem Lett 2015; 26:941-945. [PMID: 26739777 DOI: 10.1016/j.bmcl.2015.12.060] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2015] [Revised: 12/16/2015] [Accepted: 12/17/2015] [Indexed: 12/22/2022]
Abstract
The synthesis of curcumin-cyclodextrin/cellulose nanocrystals (CNCx) nano complexes was performed. CNCx were functionalized by ionic association with cationic β-cyclodextrin (CD) and CD/CNCx complexes were used to encapsulate curcumin. Preliminary in vitro results showed that the resulting curcumin-CD/CNCx complexes exerted antiproliferative effect on colorectal and prostatic cancer cell lines, with IC50s lower than that of curcumin alone.
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Affiliation(s)
| | - Robert Granet
- Université de Limoges, Laboratoire de Chimie des Substances Naturelles, EA 1069, F-87000 Limoges, France
| | - Jean Pierre Mbakidi
- Université de Limoges, Laboratoire de Chimie des Substances Naturelles, EA 1069, F-87000 Limoges, France
| | - Frédérique Brégier
- Université de Limoges, Laboratoire de Chimie des Substances Naturelles, EA 1069, F-87000 Limoges, France
| | - David Y Léger
- Université de Limoges, Laboratoire de Chimie des Substances Naturelles, EA 1069, F-87000 Limoges, France
| | - Chloë Fidanzi-Dugas
- Université de Limoges, Laboratoire de Chimie des Substances Naturelles, EA 1069, F-87000 Limoges, France
| | - Vincent Lequart
- Université d'Artois, IUT de Béthune, 1230 rue de l'Université, 62408 Béthune Cedex, France
| | - Nicolas Joly
- Université d'Artois, IUT de Béthune, 1230 rue de l'Université, 62408 Béthune Cedex, France
| | - Bertrand Liagre
- Université de Limoges, Laboratoire de Chimie des Substances Naturelles, EA 1069, F-87000 Limoges, France
| | - Vincent Chaleix
- Université de Limoges, Laboratoire de Chimie des Substances Naturelles, EA 1069, F-87000 Limoges, France
| | - Vincent Sol
- Université de Limoges, Laboratoire de Chimie des Substances Naturelles, EA 1069, F-87000 Limoges, France.
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Mbakidi JP, Drogat N, Granet R, Ouk TS, Ratinaud MH, Rivière E, Verdier M, Sol V. Hydrophilic chlorin-conjugated magnetic nanoparticles—Potential anticancer agent for the treatment of melanoma by PDT. Bioorg Med Chem Lett 2013; 23:2486-90. [DOI: 10.1016/j.bmcl.2013.03.039] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2013] [Revised: 03/07/2013] [Accepted: 03/11/2013] [Indexed: 01/01/2023]
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