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Zagoskin YD, Sergeeva YE, Fomina YS, Sukhinov DV, Malakhov SN, Osidak EO, Khramtsova EA, Gotovtsev PM, Chvalun SN, Grigoriev TE. Porous Polylactide Microparticles as Effective Fillers for Hydrogels. Biomimetics (Basel) 2023; 8:565. [PMID: 38132504 PMCID: PMC10741550 DOI: 10.3390/biomimetics8080565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 09/25/2023] [Accepted: 11/17/2023] [Indexed: 12/23/2023] Open
Abstract
High-strength composite hydrogels based on collagen or chitosan-genipin were obtained via mixing using highly porous polylactide (PLA) microparticles with diameters of 50-75 µm and porosity values of over 98%. The elastic modulus of hydrogels depended on the filler concentration. The modulus increased from 80 kPa to 400-600 kPa at a concentration of porous particles of 12-15 wt.% and up to 1.8 MPa at a filling of 20-25 wt.% for collagen hydrogels. The elastic modulus of the chitosan-genipin hydrogel increases from 75 kPa to 900 kPa at a fraction of particles of 20 wt.%. These elastic modulus values cover a range of strength properties from connective tissue to cartilage tissue. It is important to note that the increase in strength in this case is accompanied by a decrease in the density of the material, that is, an increase in porosity. PLA particles were loaded with C-phycocyanin and showed an advanced release profile up to 48 h. Thus, composite hydrogels mimic the structure, biomechanics and release of biomolecules in the tissues of a living organism.
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Affiliation(s)
- Yuriy D. Zagoskin
- National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (Y.D.Z.); (Y.E.S.); (Y.S.F.); (D.V.S.); (S.N.M.); (S.N.C.); (T.E.G.)
| | - Yana E. Sergeeva
- National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (Y.D.Z.); (Y.E.S.); (Y.S.F.); (D.V.S.); (S.N.M.); (S.N.C.); (T.E.G.)
- Moscow Institute of Physics and Technology, National Research University, 141700 Dolgoprudny, Russia
| | - Yuliya S. Fomina
- National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (Y.D.Z.); (Y.E.S.); (Y.S.F.); (D.V.S.); (S.N.M.); (S.N.C.); (T.E.G.)
| | - Daniil V. Sukhinov
- National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (Y.D.Z.); (Y.E.S.); (Y.S.F.); (D.V.S.); (S.N.M.); (S.N.C.); (T.E.G.)
| | - Sergey N. Malakhov
- National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (Y.D.Z.); (Y.E.S.); (Y.S.F.); (D.V.S.); (S.N.M.); (S.N.C.); (T.E.G.)
| | - Egor O. Osidak
- Imtek Ltd., 121552 Moscow, Russia;
- Dmitry Rogachev National Medical Research Center of Paediatric Haematology, Oncology and Immunology, 117198 Moscow, Russia
| | - Elena A. Khramtsova
- N.M. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 119334 Moscow, Russia;
| | - Pavel M. Gotovtsev
- National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (Y.D.Z.); (Y.E.S.); (Y.S.F.); (D.V.S.); (S.N.M.); (S.N.C.); (T.E.G.)
- Moscow Institute of Physics and Technology, National Research University, 141700 Dolgoprudny, Russia
| | - Sergei N. Chvalun
- National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (Y.D.Z.); (Y.E.S.); (Y.S.F.); (D.V.S.); (S.N.M.); (S.N.C.); (T.E.G.)
| | - Timofei E. Grigoriev
- National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (Y.D.Z.); (Y.E.S.); (Y.S.F.); (D.V.S.); (S.N.M.); (S.N.C.); (T.E.G.)
- Moscow Institute of Physics and Technology, National Research University, 141700 Dolgoprudny, Russia
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Sergeeva YE, Zakharevich AA, Sukhinov DV, Koshkalda AI, Kryukova MV, Malakhov SN, Antipova CG, Klein OI, Gotovtsev PM, Grigoriev TE. Chitosan Sponges for Efficient Accumulation and Controlled Release of C-Phycocyanin. BIOTECH 2023; 12:55. [PMID: 37606442 PMCID: PMC10443324 DOI: 10.3390/biotech12030055] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/04/2023] [Accepted: 08/09/2023] [Indexed: 08/23/2023] Open
Abstract
The paper proposed a new porous material for wound healing based on chitosan and C-phycocyanin (C-PC). In this work, C-PC was extracted from the cyanobacteria Arthrospira platensis biomass and purified through ammonium sulfate precipitation. The obtained C-PC with a purity index (PI) of 3.36 ± 0.24 was loaded into a chitosan sponge from aqueous solutions of various concentrations (250, 500, and 1000 mg/L). According to the FTIR study, chitosan did not form new bonds with C-PC, but acted as a carrier. The encapsulation efficiency value exceeded 90%, and the maximum loading capacity was 172.67 ± 0.47 mg/g. The release of C-PC from the polymer matrix into the saline medium was estimated, and it was found 50% of C-PC was released in the first hour and the maximum concentration was reached in 5-7 h after the sponge immersion. The PI of the released C-PC was 3.79 and 4.43 depending on the concentration of the initial solution.
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Affiliation(s)
- Yana E. Sergeeva
- Department of Biotechnology and Bioenergy, National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (Y.E.S.); (D.V.S.); (M.V.K.); (P.M.G.)
- Department of NBIC-Technologies, Moscow Institute of Physics and Technology, National Research University, 141701 Dolgoprudny, Moscow Region, Russia
| | - Anastasia A. Zakharevich
- Department of Nanobiomaterials and Structures, National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (A.A.Z.); (C.G.A.); (O.I.K.)
| | - Daniil V. Sukhinov
- Department of Biotechnology and Bioenergy, National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (Y.E.S.); (D.V.S.); (M.V.K.); (P.M.G.)
| | - Alexandra I. Koshkalda
- Faculty of Biotechnology, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia;
| | - Mariya V. Kryukova
- Department of Biotechnology and Bioenergy, National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (Y.E.S.); (D.V.S.); (M.V.K.); (P.M.G.)
| | - Sergey N. Malakhov
- Department for Resource Centre, National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia;
| | - Christina G. Antipova
- Department of Nanobiomaterials and Structures, National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (A.A.Z.); (C.G.A.); (O.I.K.)
| | - Olga I. Klein
- Department of Nanobiomaterials and Structures, National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (A.A.Z.); (C.G.A.); (O.I.K.)
- Research Center of Biotechnology of the Russian Academy of Sciences, A.N. Bach Institute of Biochemistry, 119071 Moscow, Russia
| | - Pavel M. Gotovtsev
- Department of Biotechnology and Bioenergy, National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (Y.E.S.); (D.V.S.); (M.V.K.); (P.M.G.)
- Department of NBIC-Technologies, Moscow Institute of Physics and Technology, National Research University, 141701 Dolgoprudny, Moscow Region, Russia
| | - Timofei E. Grigoriev
- Department of NBIC-Technologies, Moscow Institute of Physics and Technology, National Research University, 141701 Dolgoprudny, Moscow Region, Russia
- Department of Nanobiomaterials and Structures, National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (A.A.Z.); (C.G.A.); (O.I.K.)
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Taibi H, Boudries N, Abdelhai M, Lounici H. Comparison of Immobilized and Free Amyloglucosidase Process in Glucose SyrupsProduction from White Sorghum Starch. Chem Biodivers 2023; 20:e202300071. [PMID: 37410997 DOI: 10.1002/cbdv.202300071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 06/30/2023] [Accepted: 07/03/2023] [Indexed: 07/08/2023]
Abstract
Optimum conditions for glucose syrups production from white sorghum were studied through sequential liquefaction and saccharification processes. In the liquefaction process, a maximum dextrose equivalent (DE) of 10.98 % was achieved using 30 % (w/v) of starch and Termamyl ɑ-amylase from Bacillus licheniformis. Saccharification was performed by free and immobilized amyloglucosidase from Rhizopus mold at 1 % (w/v). DE values of 88.32 % and 79.95 % were obtained from 30 % (w/v) of starch with, respectively, free and immobilized enzyme. The immobilized Amyloglucosidase in calcium alginate beads showed reusable capacity for up to 6 cycles with 46 % of the original activity retained. The kinetic behaviour of immobilized and free enzyme gives Km value of 22.13 and 16.55 mg mL-1 and Vmax of 0.69 and 1.61 mg mL-1 min-1 , respectively. The hydrolysis yield using immobilized amyloglucosidase were lower than that of the free one. However, it is relevant to reuse enzyme without losing activity in order to trim down the overall costs of enzymatic bioprocesses as starch transformation into required products in industrial manufacturing. Hydrolysis of sorghum starch using immobilized amyloglucosidase represents a promising alternative towards the development of the glucose syrups production process and its utilization in various industries.
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Affiliation(s)
- Houria Taibi
- Laboratory of Bioactive Products and Biomass Valorization Research, Département de Chimie, Ecole Normale Supérieure Cheikh Mohamed El-Bachir El-Ibrahimi, ENS-KOUBA, BO 92 Vieux, Kouba, Algiers, Algeria
| | - Nadia Boudries
- Laboratory of Bioactive Products and Biomass Valorization Research, Département de Chimie, Ecole Normale Supérieure Cheikh Mohamed El-Bachir El-Ibrahimi, ENS-KOUBA, BO 92 Vieux, Kouba, Algiers, Algeria
| | - Moufida Abdelhai
- Laboratory of Bioactive Products and Biomass Valorization Research, Département de Chimie, Ecole Normale Supérieure Cheikh Mohamed El-Bachir El-Ibrahimi, ENS-KOUBA, BO 92 Vieux, Kouba, Algiers, Algeria
| | - Hakim Lounici
- Laboratory of Materials and Sustainable Development, Université Akli Mohand Oulhadj, Bouira. Avenue Drissi Yahia, Bouira-Algérie, Algeria
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Rybak D, Su YC, Li Y, Ding B, Lv X, Li Z, Yeh YC, Nakielski P, Rinoldi C, Pierini F, Dodda JM. Evolution of nanostructured skin patches towards multifunctional wearable platforms for biomedical applications. NANOSCALE 2023; 15:8044-8083. [PMID: 37070933 DOI: 10.1039/d3nr00807j] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Recent advances in the field of skin patches have promoted the development of wearable and implantable bioelectronics for long-term, continuous healthcare management and targeted therapy. However, the design of electronic skin (e-skin) patches with stretchable components is still challenging and requires an in-depth understanding of the skin-attachable substrate layer, functional biomaterials and advanced self-powered electronics. In this comprehensive review, we present the evolution of skin patches from functional nanostructured materials to multi-functional and stimuli-responsive patches towards flexible substrates and emerging biomaterials for e-skin patches, including the material selection, structure design and promising applications. Stretchable sensors and self-powered e-skin patches are also discussed, ranging from electrical stimulation for clinical procedures to continuous health monitoring and integrated systems for comprehensive healthcare management. Moreover, an integrated energy harvester with bioelectronics enables the fabrication of self-powered electronic skin patches, which can effectively solve the energy supply and overcome the drawbacks induced by bulky battery-driven devices. However, to realize the full potential offered by these advancements, several challenges must be addressed for next-generation e-skin patches. Finally, future opportunities and positive outlooks are presented on the future directions of bioelectronics. It is believed that innovative material design, structure engineering, and in-depth study of fundamental principles can foster the rapid evolution of electronic skin patches, and eventually enable self-powered close-looped bioelectronic systems to benefit mankind.
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Affiliation(s)
- Daniel Rybak
- Institute of Fundamental Technological Research, Polish Academy of Science, 02-106 Warsaw, Poland.
| | - Yu-Chia Su
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan
| | - Yang Li
- College of Electronic and Optical Engineering & College of Microelectronics, Institute of Flexible Electronics (Future Technology), Nanjing University of Posts & Telecommunications (NJUPT), Nanjing, 210023, China
| | - Bin Ding
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China.
| | - Xiaoshuang Lv
- Shanghai Frontier Science Research Center for Modern Textiles, College of Textiles, Donghua University, Shanghai 201620, China
| | - Zhaoling Li
- Shanghai Frontier Science Research Center for Modern Textiles, College of Textiles, Donghua University, Shanghai 201620, China
| | - Yi-Cheun Yeh
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan
| | - Pawel Nakielski
- Institute of Fundamental Technological Research, Polish Academy of Science, 02-106 Warsaw, Poland.
| | - Chiara Rinoldi
- Institute of Fundamental Technological Research, Polish Academy of Science, 02-106 Warsaw, Poland.
| | - Filippo Pierini
- Institute of Fundamental Technological Research, Polish Academy of Science, 02-106 Warsaw, Poland.
| | - Jagan Mohan Dodda
- New Technologies - Research Centre (NTC), University of West Bohemia, Univerzitní 8, 301 00 Pilsen, Czech Republic.
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Wong WF, Ang KP, Sethi G, Looi CY. Recent Advancement of Medical Patch for Transdermal Drug Delivery. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:medicina59040778. [PMID: 37109736 PMCID: PMC10142343 DOI: 10.3390/medicina59040778] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 03/31/2023] [Accepted: 04/05/2023] [Indexed: 04/29/2023]
Abstract
Transdermal patches are a non-invasive method of drug administration. It is an adhesive patch designed to deliver a specific dose of medication through the skin and into the bloodstream throughout the body. Transdermal drug delivery has several advantages over other routes of administration, for instance, it is less invasive, patient-friendly, and has the ability to bypass first-pass metabolism and the destructive acidic environment of the stomach that occurs upon the oral ingestion of drugs. For decades, transdermal patches have attracted attention and were used to deliver drugs such as nicotine, fentanyl, nitroglycerin, and clonidine to treat various diseases or conditions. Recently, this method is also being explored as a means of delivering biologics in various applications. Here, we review the existing literatures on the design and usage of medical patches in transdermal drug delivery, with a focus on the recent advances in innovation and technology that led to the emergence of smart, dissolvable/biodegradable, and high-loading/release, as well as 3D-printed patches.
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Affiliation(s)
- Won Fen Wong
- Department of Medical Microbiology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Kuan Ping Ang
- Department of Medical Microbiology, University Malaya Medical Center, Kuala Lumpur 59100, Malaysia
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore
| | - Chung Yeng Looi
- School of Biosciences, Faculty of Health & Medical Sciences, Taylor's University, Subang Jaya 47500, Malaysia
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Taniguchi M, Lindsey JS. Absorption and Fluorescence Spectra of Open-chain Tetrapyrrole Pigments–Bilirubins, Biliverdins, Phycobilins, and Synthetic Analogues. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C: PHOTOCHEMISTRY REVIEWS 2023. [DOI: 10.1016/j.jphotochemrev.2023.100585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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A novel transdermal delivery route for energy supplements: Electrospun chitosan/polyvinyl alcohol nanofiber patches loaded with vitamin B 12. Int J Biol Macromol 2023; 230:123187. [PMID: 36627031 DOI: 10.1016/j.ijbiomac.2023.123187] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 01/03/2023] [Accepted: 01/04/2023] [Indexed: 01/09/2023]
Abstract
Nanofibrous patches have attracted much attention as a solution to resolve drug delivery challenges. In this study, vitamin B12- loaded polyvinyl alcohol (PVA)/chitosan (Cs) nanofiber patch (NFP) was electrospun and cross-linked by glutaraldehyde (GA). The physicochemical properties of the nanofiber patches were assessed by morphological studies, FTIR analysis, hydrophilicity test, mechanical tests, and in-vitro evaluations including biodegradability, MTT assay, and cumulative release test of vitamin. In-vivo studies were also carried out by measuring vitamin B12 levels in the bloodstream and conducting histopathology studies on the animal models. The results showed that the mean diameter of Cs/PVA/B12 and cross-linked patch were approximately 207 and 256 nm, respectively. Cross-linking of NFP led to the lower, slower, and more continuous release of the vitamin with a slight decrease in biodegradability, and an increase in the mechanical properties of the nanofiber patches. Furthermore, the cytocompatibility assay, MTT, and in vivo results revealed no cytotoxicity of Cs/PVA/B12 NFP towards L929 cell line. No lesion or tissue damage was observed in the skin tissue of the animal models wearing these skin patches. Therefore, B12-loaded NFP can be introduced as a potential candidate for commercial transdermal routes.
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Selective Extraction of Chlorophyll a/Photosystem Polypeptides from Spirulina maxima Using Aqueous Two Phase Extraction. BIOTECHNOL BIOPROC E 2022. [DOI: 10.1007/s12257-022-0098-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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9
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Iontophoresis of basal insulin controlled delivery based on thermoplastic polyurethane. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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10
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Wu Y, Ma Y, Gao Y, Liu Y, Gao C. Poly (lactic acid)-based pH responsive membrane combined with chitosan and alizarin for food packaging. Int J Biol Macromol 2022; 214:348-359. [PMID: 35716790 DOI: 10.1016/j.ijbiomac.2022.06.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 06/06/2022] [Accepted: 06/07/2022] [Indexed: 11/05/2022]
Abstract
A poly (lactic acid) (PLA) -based functional partition composite membrane (PLA/CA) containing chitosan (CS) and alizarin (AL) was designed by solution casting method. The PLA/CA membrane contains the antibacterial zone of the edge part (PLA/CS) and the pH response detection zone of the central part (PLA/AL). At the same time, the environmentally friendly plasticizer tributyl citrate (TBC) was added to make the prepared PLA/CA composite membrane have good flexibility and high transparency. The results of FE-SEM and FTIR showed that CS and AL were uniformly dispersed in PLA matrix and had good compatibility with PLA. The antioxidant activities of PLA/CS and PLA/AL composite films were 43.3 % and 72.8 %, respectively. At the same time, the inhibitory rates of PLA/CS membrane against Escherichia coli and Staphylococcus aureus were as high as 87.91 % and 75.17 %, respectively. PLA/AL films exhibit excellent UV barrier properties. When the environmental pH (ammonia and acetic acid vapor) changed repeatedly, the PLA/AL membrane showed reversible color change of yellow under acidic condition and purple under alkaline condition. During the packaging and storage of chicken breast meat, the freshness of chicken breast meat can be detected by the color change of functional PLA/CA composite membrane.
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Affiliation(s)
- Yumin Wu
- State Key Laboratory Base for Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Ying Ma
- State Key Laboratory Base for Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Yiliang Gao
- State Key Laboratory Base for Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Yuetao Liu
- State Key Laboratory Base for Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Chuanhui Gao
- State Key Laboratory Base for Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
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Cyano-Phycocyanin: Mechanisms of Action on Human Skin and Future Perspectives in Medicine. PLANTS 2022; 11:plants11091249. [PMID: 35567250 PMCID: PMC9101960 DOI: 10.3390/plants11091249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/29/2022] [Accepted: 04/30/2022] [Indexed: 12/03/2022]
Abstract
Cyano-phycocyanin is one of the active pigments of the blue-green algae and is usually isolated from the filamentous cyanobacteria Arthrospira platensis Gomont (Spirulina). Due to its multiple physiological functions and non-toxicity, cyano-phycocyanin may be a potential substance for the topical treatment of various skin diseases. Considering that the conventional medicine faces drug resistance, insufficient efficacy and side effects, the plant origin compounds can act as an alternative option. Thus, the aim of this paper was to review the wound healing, antimicrobial, antioxidative, anti-inflammatory, antimelanogenic and anticancer properties and mechanisms of cyano-phycocyanin topical activities on human skin. Moreover, possible applications and biotechnological requirements for pharmaceutical forms of cyano-phycocyanin for the treatment of various skin diseases are discussed in this review.
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Sampaopan Y, Suksaeree J. Formulation Development and Pharmaceutical Evaluation of Lysiphyllum strychnifolium Topical Patches for Their Anti-inflammatory Potential. AAPS PharmSciTech 2022; 23:116. [PMID: 35441285 DOI: 10.1208/s12249-022-02269-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 04/03/2022] [Indexed: 01/29/2023] Open
Abstract
Topical drug delivery systems are interesting and popular dosage forms for formulation development. Thai herbs are used in alternative medicine to treat patients suffering from severe illnesses. They have significant economic and cultural value in Thailand. This work prepared Thai herbal topical patches of Lysiphyllum strychnifolium stem extracts using pectin and Eudragit® NM 30D, and glycerin as a plasticizer. Astilbin was selected as a chemical marker in L. strychnifolium stem extracts. The L. strychnifolium stem extracts showed a statistically significant decrease in nitrate accumulation. The various properties of Thai herbal topical patches were not significantly different from blank patches. However, the trends of the properties depended on the amount of Eudragit® NM 30D. All ingredients were homogeneously mixed in Thai herbal topical patches and showed a smooth and compact film. The astilbin content was found in a range of 52.72-63.36 μg/cm2. The in vitro release of astilbin depended on the amount of Eudragit® NM 30D. The kinetics of astilbin release were fitted to the Korsmeyer-Peppas model. The astilbin showed low permeation; thus, polyethylene glycol 400 was used as a permeation enhancer. Polyethylene glycol 400 could increase the permeation rates of astilbin and the cumulative amount of astilbin in pig skin. This would be suitable for preparing the Thai herbal topical patches and could be developed for pharmaceutical and herbal products.
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Bennacef C, Desobry-Banon S, Probst L, Desobry S. Advances on alginate use for spherification to encapsulate biomolecules. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106782] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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14
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Shamsuri AA, Md. Jamil SNA, Abdan K. A Brief Review on the Influence of Ionic Liquids on the Mechanical, Thermal, and Chemical Properties of Biodegradable Polymer Composites. Polymers (Basel) 2021; 13:2597. [PMID: 34451137 PMCID: PMC8401555 DOI: 10.3390/polym13162597] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 07/31/2021] [Accepted: 08/02/2021] [Indexed: 11/25/2022] Open
Abstract
Biodegradable polymers are an exceptional class of polymers that can be decomposed by bacteria. They have received significant interest from researchers in several fields. Besides this, biodegradable polymers can also be incorporated with fillers to fabricate biodegradable polymer composites. Recently, a variety of ionic liquids have also been applied in the fabrication of the polymer composites. In this brief review, two types of fillers that are utilized for the fabrication of biodegradable polymer composites, specifically organic fillers and inorganic fillers, are described. Three types of synthetic biodegradable polymers that are commonly used in biodegradable polymer composites, namely polylactic acid (PLA), polybutylene succinate (PBS), and polycaprolactone (PCL), are reviewed as well. Additionally, the influence of two types of ionic liquid, namely alkylimidazolium- and alkylphosphonium-based ionic liquids, on the mechanical, thermal, and chemical properties of the polymer composites, is also briefly reviewed. This review may be beneficial in providing insights into polymer composite investigators by enhancing the properties of biodegradable polymer composites via the employment of ionic liquids.
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Affiliation(s)
- Ahmad Adlie Shamsuri
- Laboratory of Biocomposite Technology, Institute of Tropical Forestry and Forest Products, Universiti Putra Malaysia, UPM Serdang 43400, Selangor, Malaysia
| | - Siti Nurul Ain Md. Jamil
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, UPM Serdang 43400, Selangor, Malaysia;
- Centre of Foundation Studies for Agricultural Science, Universiti Putra Malaysia, UPM Serdang 43400, Selangor, Malaysia
| | - Khalina Abdan
- Laboratory of Biocomposite Technology, Institute of Tropical Forestry and Forest Products, Universiti Putra Malaysia, UPM Serdang 43400, Selangor, Malaysia
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15
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Hu C, Lu W, Mata A, Nishinari K, Fang Y. Ions-induced gelation of alginate: Mechanisms and applications. Int J Biol Macromol 2021; 177:578-588. [PMID: 33617905 DOI: 10.1016/j.ijbiomac.2021.02.086] [Citation(s) in RCA: 143] [Impact Index Per Article: 47.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 02/05/2021] [Accepted: 02/12/2021] [Indexed: 01/16/2023]
Abstract
Alginate is an important natural biopolymer and has been widely used in the food, biomedical, and chemical industries. Ca2+-induced gelation is one of the most important functional properties of alginate. The gelation mechanism is well-known as egg-box model, which has been intensively studied in the last five decades. Alginate also forms gels with many other monovalent, divalent or trivalent cations, and their gelation can possess different mechanisms from that of Ca2+-induced gelation. The resulted gels also exhibit different properties that lead to various applications. This study is proposed to summarize the gelation mechanisms of alginate induced by different cations, mainly including H+, Ca2+, Ba2+, Cu2+, Sr2+, Zn2+, Fe2+, Mn2+, Al3+, and Fe3+. The mechanism of H+-induced gelation of alginate mainly depends on the protonation of carboxyl groups. Divalent ions-induced gelation of alginate show different selection towards G, M, and GM blocks. Trivalent ions can bind to carboxyl groups of uronates with no selection. The properties and applications of these ionotropic alginate gels are also discussed. The knowledge gained in this study would provide useful information for the practical applications of alginate.
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Affiliation(s)
- Chuhuan Hu
- Glyn O. Phillips Hydrocolloid Research Centre, School of Food and Biological Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Wei Lu
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Analucia Mata
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Katsuyoshi Nishinari
- Glyn O. Phillips Hydrocolloid Research Centre, School of Food and Biological Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Yapeng Fang
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
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Formation of Stereocomplex Crystal and Its Effect on the Morphology and Property of PDLA/PLLA Blends. Polymers (Basel) 2020; 12:polym12112515. [PMID: 33126708 PMCID: PMC7694064 DOI: 10.3390/polym12112515] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/25/2020] [Accepted: 10/27/2020] [Indexed: 11/16/2022] Open
Abstract
Stereocomplex-polylactic acid (SC-PLA) is obtained in poly(D-lactic) acid/poly(L-lactic) acid (PDLA/PLLA) blends under adjusting processing conditions. It is found that the degree of crystallinity of overall SC-PLA is up to 43.7% in PDLA/PLLA blends of 1:1 mass ratio. Formation of stereocomplex (SC) crystals forces molecular chains in the blends to be more closely arranged and further enhances interaction between molecular chains, thus forming a physical cross-linking network in the SC crystals, resulting in the blends having a special microstructure. The mechanism of formation of the SC crystal physical cross-linking network is elucidated by dielectric spectroscopy, and the relationships between homocomplex (HC) crystals, SC crystals, and amorphous regions in the blends are also analyzed. Interestingly, mechanical properties of the blends are significantly improved due to formation of an SC crystal cross-linking network.
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