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Kuasnei M, Benvenutti L, Fernando dos Santos D, Ferreira SRS, Pinto VZ, Ferreira Zielinski AA. Efficient Anthocyanin Recovery from Black Bean Hulls Using Eutectic Mixtures: A Sustainable Approach for Natural Dye Development. Foods 2024; 13:1374. [PMID: 38731745 PMCID: PMC11083087 DOI: 10.3390/foods13091374] [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: 04/03/2024] [Revised: 04/23/2024] [Accepted: 04/26/2024] [Indexed: 05/13/2024] Open
Abstract
There is a growing interest in exploring new natural sources of colorants. This study aimed to extract anthocyanins from broken black bean hulls (Phaseolus vulgaris L.) by modifying water with a eutectic mixture (choline chloride:citric acid (ChCl:Ca)). Ultrasound-assisted extraction (UAE) was employed and optimized in terms of temperature (30-70 °C), ultrasound power (150-450 W), and eutectic mixture concentration in water (1-9% (w/v)), resulting in an optimal condition of 66 °C, 420 W, and 8.2% (w/v), respectively. The main quantified anthocyanins were delphinidin-3-O-glycoside, petunidin-3-O-glycoside, and malvidin-3-O-glycoside. The half-life of the anthocyanins at 60 °C increased twelvefold in the eutectic mixture extract compared to the control, and when exposed to light, the half-life was 10 times longer, indicating greater resistance of anthocyanins in the extracted eutectic mixture. Additionally, the extracts were concentrated through centrifuge-assisted cryoconcentration, with the initial cycle almost double the extract value, making this result more favorable regarding green metrics. The first concentration cycle, which showed vibrant colors of anthocyanins, was selected to analyze the color change at different pH levels. In general, the technology that uses eutectic mixtures as water modifiers followed by cryoconcentration proved to be efficient for use as indicators in packaging, both in quantity and quality of anthocyanins.
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Affiliation(s)
- Mayara Kuasnei
- Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, Florianópolis 88040-900, SC, Brazil; (M.K.); (L.B.); (S.R.S.F.)
| | - Laís Benvenutti
- Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, Florianópolis 88040-900, SC, Brazil; (M.K.); (L.B.); (S.R.S.F.)
| | | | - Sandra Regina Salvador Ferreira
- Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, Florianópolis 88040-900, SC, Brazil; (M.K.); (L.B.); (S.R.S.F.)
| | - Vânia Zanella Pinto
- Food Engineering, Federal University of Fronteira Sul, Laranjeiras do Sul 85301-970, PR, Brazil;
| | - Acácio Antonio Ferreira Zielinski
- Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, Florianópolis 88040-900, SC, Brazil; (M.K.); (L.B.); (S.R.S.F.)
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Abdelfattah EM, Elzanaty H, Elsharkawy WB, Azzam MA, Elqahtani ZM, Alotibi S, Alyami M, Fahmy T. Enhancement of the Structure, Thermal, Linear/Nonlinear Optical Properties, and Antibacterial Activity of Poly (vinyl alcohol)/Chitosan/ZnO Nanocomposites for Eco-Friendly Applications. Polymers (Basel) 2023; 15:4282. [PMID: 37959962 PMCID: PMC10648650 DOI: 10.3390/polym15214282] [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: 08/17/2023] [Revised: 09/20/2023] [Accepted: 09/27/2023] [Indexed: 11/15/2023] Open
Abstract
The preparation of poly (vinyl alcohol)/chitosan/ZnO (PVA/Cs/ZnO) nanocomposite films as bioactive nanocomposites was implemented through an environmentally friendly approach that included mixing, solution pouring, and solvent evaporation. The nanocomposite films were characterized using various techniques such as X-ray diffraction (XRD), Fourier-transform infrared (FT-IR) spectroscopy, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and UV-Vis spectroscopy. The XRD study revealed the encapsulation of nanoparticles by the PVA/Cs blend matrix. The DSC results showed that the addition of ZnO NPs increased glass transition and melting temperature values of the PVA/Cs blend. ATR-FTIR spectra detected an irregular shift (either red or blue) in some of the characteristic bands of the PVA/Cs nanocomposite, indicating the existence of intra/intermolecular hydrogen bonding creating an interaction between the OH groups of PVA/Cs and ZnO nanoparticles. A thermogravimetric (TGA) analysis demonstrated that the nanocomposites achieved better thermal resistance than a pure PVA/Cs blend and its thermal stability was enhanced with increasing concentration of ZnO nanoparticles. UV analysis showed that with an increase in the content of ZnO NPs, the optical bandgap of PVA/Cs was decreased from 4.43 eV to 3.55 eV and linear and nonlinear parameters were enhanced. Our optical results suggest the use of PVA/Cs/ZnO nanocomposite films for various optoelectronics applications. PVA/Cs/ZnO nanocomposites exhibited significant antibacterial activity against Gram-positive and Gram-negative bacteria. It was found that nanocomposite samples were more effective against Gram-positive compared to Gram-negative bacteria.
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Affiliation(s)
- E. M. Abdelfattah
- Physics Department, College of Science and Humanities, Prince Sattam Bin Abdulaziz University, Alkharj 11942, Saudi Arabia; (E.M.A.); (W.B.E.); (S.A.); (M.A.)
- Physics Department, Faculty of Science, Zagazig University, Zagazig 44519, Egypt
| | - H. Elzanaty
- Department of Basic Science, Faculty of Engineering, Delta University, Mansoura 11152, Egypt;
| | - W. B. Elsharkawy
- Physics Department, College of Science and Humanities, Prince Sattam Bin Abdulaziz University, Alkharj 11942, Saudi Arabia; (E.M.A.); (W.B.E.); (S.A.); (M.A.)
| | - M. A. Azzam
- Chemistry Department, College of Science and Humanities, Prince Sattam Bin Abdulaziz University, Alkharj 11942, Saudi Arabia;
| | - Z. M. Elqahtani
- Department of Physics, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - S. Alotibi
- Physics Department, College of Science and Humanities, Prince Sattam Bin Abdulaziz University, Alkharj 11942, Saudi Arabia; (E.M.A.); (W.B.E.); (S.A.); (M.A.)
| | - M. Alyami
- Physics Department, College of Science and Humanities, Prince Sattam Bin Abdulaziz University, Alkharj 11942, Saudi Arabia; (E.M.A.); (W.B.E.); (S.A.); (M.A.)
| | - T. Fahmy
- Polymer Research Group, Physics Department, Faculty of Science, Mansoura University, Mansoura 35516, Egypt;
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Segneanu AE, Vlase G, Vlase T, Sicoe CA, Ciocalteu MV, Herea DD, Ghirlea OF, Grozescu I, Nanescu V. Wild-Grown Romanian Helleborus purpurascens Approach to Novel Chitosan Phyto-Nanocarriers-Metabolite Profile and Antioxidant Properties. PLANTS (BASEL, SWITZERLAND) 2023; 12:3479. [PMID: 37836219 PMCID: PMC10574898 DOI: 10.3390/plants12193479] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 09/27/2023] [Accepted: 09/29/2023] [Indexed: 10/15/2023]
Abstract
The current nanomedicinal approach combines medicinal plants and nanotechnology to create new scaffolds with enhanced bioavailability, biodistribution and controlled release. In an innovative approach to herb encapsulation in nanosized chitosan matrices, wild-grown Romanian Helleborus purpurascens was used to prepare two new chitosan nanocarriers. The first carrier preparation involved the nanoencapsulation of hellebore in chitosan. The second carrier emerged from two distinct stages: hellebore-AgNPs phyto-carrier system succeeded by nanoencapsulation in chitosan. The morphostructural characteristics and thermal behavior of these newly prepared nanocarriers were examined using FT-IR, XRD, DLS, SEM, EDS and thermogravimetric analyses. In addition, the encapsulation yield, encapsulation efficiency and encapsulation contents were investigated. The antioxidant activity was estimated using four in vitro, noncompetitive methods: total phenolic assay; 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay; phosphomolybdate (i.e., total antioxidant capacity); and iron(III)-phenanthroline antioxidant assay. Moreover, this study reports the first low-molecular-weight metabolite profile of wild-grown Romanian Helleborus purpurascens Waldst. & Kit. A total of one hundred and five secondary metabolites were identified in the mass spectra (MS)-positive mode from fourteen secondary metabolite categories (alkaloids, butenolides, bufadienolides, phytoecdysteroids, amino acids and peptides, terpenoids, fatty acids, flavonoids, phenolic acids, sterols, glycosides, carbohydrates, nucleosides and miscellaneous). The collective results suggest the potential application is a promising new antioxidant vehicle candidate in tumor therapeutic strategy.
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Affiliation(s)
- Adina-Elena Segneanu
- Institute for Advanced Environmental Research-West, University of Timisoara (ICAM-WUT), Oituz Nr. 4, 300086 Timisoara, Romania; (G.V.); (T.V.)
| | - Gabriela Vlase
- Institute for Advanced Environmental Research-West, University of Timisoara (ICAM-WUT), Oituz Nr. 4, 300086 Timisoara, Romania; (G.V.); (T.V.)
- Research Centre for Thermal Analysis Environmental Problems, West University of Timisoara, Pestalozzi St. 16, 300115 Timisoara, Romania
| | - Titus Vlase
- Institute for Advanced Environmental Research-West, University of Timisoara (ICAM-WUT), Oituz Nr. 4, 300086 Timisoara, Romania; (G.V.); (T.V.)
- Research Centre for Thermal Analysis Environmental Problems, West University of Timisoara, Pestalozzi St. 16, 300115 Timisoara, Romania
| | - Crina Andreea Sicoe
- Faculty of Chemistry, Biology, Geography, West University of Timisoara, Pestalozzi St. 16, 300115 Timisoara, Romania;
| | - Maria Viorica Ciocalteu
- Faculty of Pharmacy, University of Medicine and Pharmacy Craiova, St. Petru Rareș 2, 200349 Craiova, Romania; (M.V.C.); (V.N.)
| | - Dumitru Daniel Herea
- National Institute of Research and Development for Technical Physics, 47 Mangeron Blvd., 700050 Iasi, Romania;
| | - Ovidiu-Florin Ghirlea
- Faculty of Medicine, “Victor Babes” University of Medicine and Pharmacy, square Eftimie Murgu No. 2, 300041 Timisoara, Romania;
| | - Ioan Grozescu
- CAICON Department, University Politehnica Timisoara, 300006 Timisoara, Romania;
| | - Valentin Nanescu
- Faculty of Pharmacy, University of Medicine and Pharmacy Craiova, St. Petru Rareș 2, 200349 Craiova, Romania; (M.V.C.); (V.N.)
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Ngasotter S, Xavier KAM, Porayil L, Balange A, Nayak BB, Eapen S, Adarsh KJ, Sreekala MS, Sharma R, Ninan G. Optimized high-yield synthesis of chitin nanocrystals from shrimp shell chitin by steam explosion. Carbohydr Polym 2023; 316:121040. [PMID: 37321734 DOI: 10.1016/j.carbpol.2023.121040] [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: 01/29/2023] [Revised: 04/17/2023] [Accepted: 05/19/2023] [Indexed: 06/17/2023]
Abstract
This study attempted for the first time to prepare chitin nanocrystals (ChNCs) from shrimp shell chitin using steam explosion (SE) method. Response surface methodology (RSM) approach was used to optimize the SE conditions. Optimum SE conditions to acquire a maximum yield of 76.78 % were acid concentration (2.63 N), time (23.70 min), and chitin to acid ratio (1:22). Transmission electron microscopy (TEM) revealed the ChNCs produced by SE had an irregular spherical shape with an average diameter of 55.70 ± 13.12 nm. FTIR spectra showed ChNCs were slightly different than chitin due to a shift in peak positions to higher wavenumber and higher peak intensities. XRD patterns indicated ChNCs were a typical α-chitin structure. Thermal analysis revealed ChNCs were less thermally stable than chitin. Compared to conventional acid hydrolysis, the SE approach described in this study is simple, fast, easy, and requires less acid concentration and acid quantity, making it more scalable and efficient for synthesizing ChNCs. Furthermore, the characteristics of the ChNCs will shed light on the potential industrial uses for the polymer.
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Affiliation(s)
- Soibam Ngasotter
- ICAR-Central Institute of Fisheries Education, Mumbai 400061, Maharashtra, India
| | - K A Martin Xavier
- ICAR-Central Institute of Fisheries Education, Mumbai 400061, Maharashtra, India.
| | - Layana Porayil
- ICAR-Central Institute of Fisheries Education, Mumbai 400061, Maharashtra, India
| | - Amjad Balange
- ICAR-Central Institute of Fisheries Education, Mumbai 400061, Maharashtra, India
| | - Binaya Bhusan Nayak
- ICAR-Central Institute of Fisheries Education, Mumbai 400061, Maharashtra, India
| | - Shibu Eapen
- STIC, Cochin University of Science and Technology, Kerala 682022, India
| | - K J Adarsh
- STIC, Cochin University of Science and Technology, Kerala 682022, India
| | - M S Sreekala
- School of Chemical Sciences, Mahatma Gandhi University, Kerala 686560, India
| | - Rupam Sharma
- ICAR-Central Institute of Fisheries Education, Mumbai 400061, Maharashtra, India
| | - George Ninan
- ICAR-Central Institute of Fisheries Technology, Kerala 682029, India
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5
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Medany SS, Hefnawy MA. Nickel–cobalt oxides decorated Chitosan electrocatalyst for ethylene glycol oxidation. SURFACES AND INTERFACES 2023; 40:103077. [DOI: https:/doi.org/10.1016/j.surfin.2023.103077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
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Al-Kadhi NS, Hefnawy MA, S. Nafee S, Alamro FS, Pashameah RA, Ahmed HA, Medany SS. Zinc Nanocomposite Supported Chitosan for Nitrite Sensing and Hydrogen Evolution Applications. Polymers (Basel) 2023; 15:2357. [DOI: https:/doi.org/10.3390/polym15102357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2023] Open
Abstract
Nanoparticles of ZnO-Chitosan (Zn-Chit) composite were prepared using precipitation methods. Several analytical techniques, such as scanning electron microscope (SEM), transmitted electron microscope (TEM), powder X-ray diffraction (XRD), infrared spectroscopy (IR), and thermal analysis, were used to characterize the prepared composite. The activity of the modified composite was investigated for nitrite sensing and hydrogen production applications using various electrochemical techniques. A comparative study was performed for pristine ZnO and ZnO loaded on chitosan. The modified Zn-Chit has a linear range of detection 1–150 µM and a limit of detection (LOD) = 0.402 µM (response time ~3 s). The activity of the modified electrode was investigated in a real sample (milk). Furthermore, the anti-interference capability of the surface was utilized in the presence of several inorganic salts and organic additives. Additionally, Zn-Chit composite was employed as an efficient catalyst for hydrogen production in an acidic medium. Thus, the electrode showed long-term stability toward fuel production and enhanced energy security. The electrode reached a current density of 50 mA cm−2 at an overpotential equal to −0.31 and −0.2 V (vs. RHE) for GC/ZnO and GC/Zn-Chit, respectively. Electrode durability was studied for long-time constant potential chronoamperometry for 5 h. The electrodes lost 8% and 9% of the initial current for GC/ZnO and GC/Zn-Chit, respectively.
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Affiliation(s)
- Nada S. Al-Kadhi
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Mahmoud A. Hefnawy
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Sherif S. Nafee
- Physics Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Fowzia S. Alamro
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Rami Adel Pashameah
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah 24230, Saudi Arabia
| | - Hoda A. Ahmed
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Shymaa S. Medany
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
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7
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Al-Kadhi NS, Hefnawy MA, S. Nafee S, Alamro FS, Pashameah RA, Ahmed HA, Medany SS. Zinc Nanocomposite Supported Chitosan for Nitrite Sensing and Hydrogen Evolution Applications. Polymers (Basel) 2023; 15:2357. [PMID: 37242932 PMCID: PMC10221157 DOI: 10.3390/polym15102357] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/12/2023] [Accepted: 05/15/2023] [Indexed: 05/28/2023] Open
Abstract
Nanoparticles of ZnO-Chitosan (Zn-Chit) composite were prepared using precipitation methods. Several analytical techniques, such as scanning electron microscope (SEM), transmitted electron microscope (TEM), powder X-ray diffraction (XRD), infrared spectroscopy (IR), and thermal analysis, were used to characterize the prepared composite. The activity of the modified composite was investigated for nitrite sensing and hydrogen production applications using various electrochemical techniques. A comparative study was performed for pristine ZnO and ZnO loaded on chitosan. The modified Zn-Chit has a linear range of detection 1-150 µM and a limit of detection (LOD) = 0.402 µM (response time ~3 s). The activity of the modified electrode was investigated in a real sample (milk). Furthermore, the anti-interference capability of the surface was utilized in the presence of several inorganic salts and organic additives. Additionally, Zn-Chit composite was employed as an efficient catalyst for hydrogen production in an acidic medium. Thus, the electrode showed long-term stability toward fuel production and enhanced energy security. The electrode reached a current density of 50 mA cm-2 at an overpotential equal to -0.31 and -0.2 V (vs. RHE) for GC/ZnO and GC/Zn-Chit, respectively. Electrode durability was studied for long-time constant potential chronoamperometry for 5 h. The electrodes lost 8% and 9% of the initial current for GC/ZnO and GC/Zn-Chit, respectively.
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Affiliation(s)
- Nada S. Al-Kadhi
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Mahmoud A. Hefnawy
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Sherif S. Nafee
- Physics Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Fowzia S. Alamro
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Rami Adel Pashameah
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah 24230, Saudi Arabia
| | - Hoda A. Ahmed
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Shymaa S. Medany
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
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Cabrera-Barjas G, Jimenez R, Romero R, Valdes O, Nesic A, Hernández-García R, Neira A, Alejandro-Martín S, de la Torre AF. Value-added long-chain aliphatic compounds obtained through pyrolysis of phosphorylated chitin. Int J Biol Macromol 2023; 238:124130. [PMID: 36963553 DOI: 10.1016/j.ijbiomac.2023.124130] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 03/03/2023] [Accepted: 03/18/2023] [Indexed: 03/26/2023]
Abstract
In this work, chitin, as a biobased polymer, is used as a precursor to obtain a phosphorylated derivatives. The influence of the different degree of phosphorylation in chitin on pyrolysis pattern was investigated. In order to understand the pyrolysis mechanism and the potential application of phosphorylated chitins, the samples were pyrolyzed at different temperatures and analyzed by FTIR, SEM, and Py-GC/MS analysis. Moreover, the thermal degradation and the evolved gases during chitin degradation and its derivatives were measured. The results showed that phosphorylation of chitin decreased the thermal stability of biopolymer and significantly changed the pattern of pyrolysis compared to neat chitin. The production of long-chain hydrocarbons was detected during pyrolysis of phosphorylated chitin, whereas this was not the case with raw chitin. Those two effects were more pronounced as the degree of phosphorylation increased. Chitin with the degree of phosphorylation (DS 1.35) exhibited the highest selectivity (91 %) towards production of long-chain hydrocarbons (C12-C17) at 500 °C. Moreover, the obtained results allowed to propose, for the first time, the mechanism of pyrolysis of phosphorylated chitin.
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Affiliation(s)
- Gustavo Cabrera-Barjas
- Universidad de Concepción, Unidad de Desarrollo Tecnológico, UDT, Av. Cordillera 2634, Parque Industrial Coronel, Coronel, Biobío, Chile.
| | - Romel Jimenez
- Carbon and Catalysis Laboratory (CarboCat), Department of Chemical Engineering, Universidad de Concepción, Concepción, Chile
| | - Romina Romero
- Departamento Química Analítica e Inorgánica Facultad de Ciencias Químicas, Universidad de Concepción, Concepción, Chile
| | - Oscar Valdes
- Centro de Investigación de Estudios Avanzados del Maule (CIEAM), Vicerrectoría de Investigación y Postgrado, Universidad Católica del Maule, Talca, Chile.
| | - Aleksandra Nesic
- University of Belgrade, Vinca Institute of Nuclear Sciences-National Institute of the Republic of Serbia, 12-14 Mike Petrovića Street, Belgrade, 11000, Serbia
| | - Ruber Hernández-García
- Centro de Investigación de Estudios Avanzados del Maule (CIEAM), Vicerrectoría de Investigación y Postgrado, Universidad Católica del Maule, Talca, Chile
| | - Andrónico Neira
- Department of Biological and Animal Science, University of Chile, Santa Rosa 11735, La Pintana, Santiago, Chile
| | | | - Alexander F de la Torre
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Concepción, Casilla 160-C, Concepción, Chile
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Marouani ME, El Hamdaoui L, Boulhaoua M, Pienaar A, Trif L, Costa G, Simo‐Tagne M, Kifani‐Sahban F. Non‐Isothermal Kinetics of Phoenix Dactylifera
L
. Date Palm Seeds Pyrolysis Using Model Fitting and Iso‐Conversional Model Free Methods. ChemistrySelect 2023. [DOI: 10.1002/slct.202203946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Affiliation(s)
- Maryam El Marouani
- Department of Chemistry, College of Sciences University of Hafr Al Batin Hafr Al Batin the Kingdom of Saudi Arabia
| | - Lahcen El Hamdaoui
- Laboratory of Materials Nanotechnology and Environment Faculty of Sciences Mohammed V University in Rabat Rabat Morocco
| | - Mohammed Boulhaoua
- ELTE Eötvös Loránd University Institute of Chemistry Pázmány Péter sétány 1/A. H-1117 Budapest Hungary
| | - Andrew Pienaar
- EPCM Global Engineering, Centurion Republic of South Africa
| | - László Trif
- Institute of Materials and Environmental Chemistry Research Centre for Natural Sciences Magyar tudósok körútja, 2 Hungary
| | - Guy Costa
- Laboratoire Peirene, Equipe SylvaLIM (EA 7500) Faculté des Sciences et Techniques 87060 Limoges Cedex France
| | | | - Fatima Kifani‐Sahban
- Team of Modeling and Simulation in Mechanics and Energetic Department of Physics Faculty of Sciences Mohammed V University in Rabat Rabat Morocco
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10
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Kumari N, Behera M, Singh R. Facile synthesis of biopolymer decorated magnetic coreshells for enhanced removal of xenobiotic azo dyes through experimental modelling. Food Chem Toxicol 2023; 171:113518. [PMID: 36436617 DOI: 10.1016/j.fct.2022.113518] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/01/2022] [Accepted: 11/17/2022] [Indexed: 11/27/2022]
Abstract
Since contamination of xenobiotics in water bodies has become a global issue, their removal is gaining ample attention lately. In the present study, nZVI was synthesized using chitosan for removal of two such xenobitic dyes, Bromocresol green and (BCG) and Brilliant blue (BB), which have high prevalence in freshwater and wastewater matrices. nZVI functionalization prevents nanoparticle aggregation and oxidation, enhancing the removal of BCG and BB with an efficiency of 84.96% and 86.21%, respectively. XRD, FESEM, EDS, and FTIR have been employed to investigate the morphology, elemental composition, and functional groups of chitosan-modified nanoscale-zerovalent iron (CS@nZVI). RSM-CCD model was utilized to assess the combined effect of five independent variables and determine the best condition for maximum dye removal. The interactions between adsorbent dose (2-4 mg), pH (4-8), time (20-40 min), temperature (35-65 0C), and initial dye concentration (40-60 mg/L) was modeled to study the response, i.e., dye removal percentage. The reaction fitted well with Langmuir isotherm and pseudo-first-order kinetics, with a maximum qe value of 426.97 and 452.4 mg/g for BCG and BB, respectively. Thermodynamic analysis revealed the adsorption was spontaneous, and endothermic in nature. Moreover, CS@nZVI could be used up to five cycles of dye removal with remarkable potential for real water samples.
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Affiliation(s)
- Nisha Kumari
- Department of Environmental Science, School of Earth Sciences, Central University of Rajasthan, Ajmer, 305817, Rajasthan, India
| | - Monalisha Behera
- Department of Environmental Science, School of Earth Sciences, Central University of Rajasthan, Ajmer, 305817, Rajasthan, India
| | - Ritu Singh
- Department of Environmental Science, School of Earth Sciences, Central University of Rajasthan, Ajmer, 305817, Rajasthan, India.
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Preparation of hypoglycemic anthocyanins from mulberry (Fructus mori) fruits by ultrahigh pressure extraction. INNOV FOOD SCI EMERG 2022. [DOI: 10.1016/j.ifset.2022.103255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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12
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de Araújo MJG, Barbosa FC, Fook MVL, Silva SML, Leite IF. Influence of Quaternary Ammonium Salt Functionalized Chitosan Additive as Sustainable Filler for High-Density Polyethylene Composites. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7418. [PMID: 36363010 PMCID: PMC9657044 DOI: 10.3390/ma15217418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 07/18/2022] [Accepted: 07/22/2022] [Indexed: 06/16/2023]
Abstract
In this study, an antimicrobial packaging material was successfully developed with blends of high-density polyethylene (HDPE) and chitosan (CS) made by melt processing. In the different HDPE/CS composites, the CS content effect (up to 40%), and the addition of quaternary ammonium salt functionalized chitosan (CS-CTAB) as an additive were evaluated by X-ray diffraction (XRD), differential scanning calorimetry (DSC), thermogravimetric analyses (TG), tensile strength, scanning electron microscopy (SEM) and antimicrobial activity. When analyzing the effect of the additive in the different HDPE/CS composites, it was observed that the compositions with 10 and 20 %wt of chitosan showed better elongation values (~13% and 10%) as well as a higher decomposition temperature at 20% mass loss (T20) varying from (321-332 °C and 302-312 °C), respectively, in relation to the other compositions, regardless of the type of additive used, it acted as an antimicrobial agent, promoting inhibition of microbial growth against the strains gram-positive and gram-negative used in this work, making the different HDPE/CS composites suitable candidates for use in food packaging.
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Affiliation(s)
- Maria José G. de Araújo
- Graduate Program in Science and Materials Engineering, Federal University of Paraíba, João Pessoa 58051-900, Brazil
| | - Francivandi C. Barbosa
- Department of Materials Engineering, Federal University of Campina Grande, Campina Grande 58429-900, Brazil
| | - Marcus Vinícius L. Fook
- Department of Materials Engineering, Federal University of Campina Grande, Campina Grande 58429-900, Brazil
| | - Suédina Maria L. Silva
- Department of Materials Engineering, Federal University of Campina Grande, Campina Grande 58429-900, Brazil
| | - Itamara F. Leite
- Department of Materials Engineering, Federal University of Paraíba, João Pessoa 58051-900, Brazil
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Leite ML, Anselmi C, Soares IPM, Manso AP, Hebling J, Carvalho RM, de Souza Costa CA. Calcium silicate-coated porous chitosan scaffold as a cell-free tissue engineering system for direct pulp capping. Dent Mater 2022; 38:1763-1776. [DOI: 10.1016/j.dental.2022.09.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 09/19/2022] [Accepted: 09/23/2022] [Indexed: 11/29/2022]
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ALSamman MT, Sánchez J. Chitosan- and Alginate-Based Hydrogels for the Adsorption of Anionic and Cationic Dyes from Water. Polymers (Basel) 2022; 14:polym14081498. [PMID: 35458248 PMCID: PMC9025658 DOI: 10.3390/polym14081498] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/28/2022] [Accepted: 03/30/2022] [Indexed: 02/04/2023] Open
Abstract
Novel hydrogel systems based on polyacrylamide/chitosan (PAAM/chitosan) or polyacrylic acid/alginate (PAA/alginate) were prepared, characterized, and applied to reduce the concentrations of dyes in water. These hydrogels were synthetized via a semi-interpenetrating polymer network (semi-IPN) and then characterized by Fourier transformed infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA), and their swelling capacities in water were measured. In the adsorption experiments, methylene blue (MB) was used as a cationic dye, and methyl orange (MO) was used as an anionic dye. The study was carried out using a successive batch method for the dye absorption process and an equilibrium system to investigate the adsorption of MO on PAAM/chitosan hydrogels and MB on PAA/alginate in separate experiments. The results showed that the target hydrogels were synthetized with high yield (more than 90%). The chemical structure of the hydrogels was corroborated by FTIR, and their high thermal stability was verified by TGA. The absorption of the MO dye was higher at pH 3.0 using PAAM/chitosan, and it had the ability to remove 43% of MO within 10 min using 0.05 g of hydrogel. The presence of interfering salts resulted in a 20–60% decrease in the absorption of MO. On the other hand, the absorption of the MB dye was higher at pH 8.5 using PAA/alginate, and it had the ability to remove 96% of MB within 10 min using 0.05 g of hydrogel, and its removal capacity was stable for interfering salts.
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Khoerunnisa F, Nurhayati M, Annisa NAA, Fatimah S, Nashrah N, Hendrawan H, Ko YG, Ng EP, Opaprakasit P. Effects of Benzalkonium Chloride Contents on Structures, Properties, and Ultrafiltration Performances of Chitosan-Based Nanocomposite Membranes. MEMBRANES 2022; 12:268. [PMID: 35323744 PMCID: PMC8952018 DOI: 10.3390/membranes12030268] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 02/05/2022] [Accepted: 02/07/2022] [Indexed: 02/05/2023]
Abstract
The effects of benzalkonium chloride (BKC) contents on the structure, properties, and ultrafiltration performance of chitosan-based nanocomposite membranes containing poly(ethylene glycol) and multi-walled carbon nanotube (chitosan/BKC/PEG/CNT) were examined. The membranes were prepared by a mixing solution method and phase inversion before being characterized with microscopic techniques, tensile tests, thermogravimetric analysis, water contact angle, and porosity measurements. The performance of the nanocomposite membranes in regard to permeability (flux) and permselectivity (rejection) was examined. The results show that the incorporation of BKC produced nanocomposite membranes with smaller pore structures and improved physico-chemical properties, such as an increase in porosity and surface roughness (Ra = 45.15 to 145.35 nm and Rq = 53.69 to 167.44 nm), an enhancement in the elongation at break from 45 to 109%, and an enhancement in the mechanical strength from 31.2 to 45.8 MPa. In contrast, a decrease in the membrane hydrophilicity (water contact angle increased from 56.3 to 82.8°) and a decrease in the average substructure pore size from 32.64 to 10.08 nm were observed. The membrane rejection performances toward Bovine Serum Albumin (BSA) increased with the BKC composition in both dead-end and cross-flow filtration processes. The chitosan/BKC/PEG/CNT nanocomposite membranes have great potential in wastewater treatments for minimizing biofouling without reducing the water purification performance.
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Affiliation(s)
- Fitri Khoerunnisa
- Department of Chemistry, Indonesia University of Education, Setiabudhi 229, Bandung 40154, Indonesia; (M.N.); (N.A.A.A.); (H.H.)
| | - Mita Nurhayati
- Department of Chemistry, Indonesia University of Education, Setiabudhi 229, Bandung 40154, Indonesia; (M.N.); (N.A.A.A.); (H.H.)
| | - Noor Azmi Aulia Annisa
- Department of Chemistry, Indonesia University of Education, Setiabudhi 229, Bandung 40154, Indonesia; (M.N.); (N.A.A.A.); (H.H.)
| | - Siti Fatimah
- School of Material Science & Engineering, Yeungnam University, Gyeongsan 38541, Korea; (S.F.); (N.N.); (Y.-G.K.)
| | - Nisa Nashrah
- School of Material Science & Engineering, Yeungnam University, Gyeongsan 38541, Korea; (S.F.); (N.N.); (Y.-G.K.)
| | - Hendrawan Hendrawan
- Department of Chemistry, Indonesia University of Education, Setiabudhi 229, Bandung 40154, Indonesia; (M.N.); (N.A.A.A.); (H.H.)
| | - Young-Gun Ko
- School of Material Science & Engineering, Yeungnam University, Gyeongsan 38541, Korea; (S.F.); (N.N.); (Y.-G.K.)
| | - Eng-Poh Ng
- School of Chemical Sciences, Universiti Sains Malaysia, USM, Penang 11800, Malaysia;
| | - Pakorn Opaprakasit
- School of Bio-Chemical Engineering and Technology, Sirindhorn International Institute of Technology (SIIT), Thammasat University, Khlong Luang 12121, Thailand
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Gharanjig H, Iri M, Hosseinnezhad M, Gharanjig K, Jafari SM. Enhanced thermal stability of anthocyanins through natural polysaccharides from Angum gum and cress seed gum. J Food Sci 2022; 87:585-598. [PMID: 34997936 DOI: 10.1111/1750-3841.16016] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 11/17/2021] [Accepted: 11/23/2021] [Indexed: 11/30/2022]
Abstract
Enhanced thermal stability of anthocyanins from black barberry was obtained using an optimum concentration of Angum gum (AG) and cress seed gum (CSG). To this goal initially, the phytochemical characteristics, and the thermal stability of purified and non-purified anthocyanins were investigated to perceive the effect of the purification process. Then the effect of each gum and its concentration was evaluated on the thermal degradation kinetics of anthocyanins. Results demonstrated that both gums enhanced the thermal stability of anthocyanins, while CSG had a superior effect. Findings also revealed that the half-life of anthocyanin was increased at 60°C from 366 ± 22.8 to 432 ± 4.2 and 636 ± 52.8 min in presence of AG and CSG, respectively. TGA results confirmed that the presence of SF-AG and CSG in their optimum concentration enhanced the heat stability of anthocyanin extract. Also, physical molecular bondings were confirmed by the FTIR spectrums where some peaks attributed to both of the extract and the gums were shifted. Plateau or flake-like micro-particles were detected by SEM which correspond with the most freeze-dried microcapsules. PRACTICAL APPLICATION: The results of this study may contribute to the enhanced thermal stability of anthocyanins from barberry that can be used as a coloring agent in beverage and food systems. Moreover, it can be used in preparation of natural nutraceuticals and pharmaceuticals.
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Affiliation(s)
- Hamid Gharanjig
- Department of Organic Colorants, Institute for Color Science and Technology, Tehran, Iran
| | - Marjan Iri
- Department of Organic Colorants, Institute for Color Science and Technology, Tehran, Iran
| | - Mozhgan Hosseinnezhad
- Department of Organic Colorants, Institute for Color Science and Technology, Tehran, Iran.,Center of Excellence for Color Science and Technology, Institute for Color Science and Technology, Tehran, Iran
| | - Kamaladin Gharanjig
- Department of Organic Colorants, Institute for Color Science and Technology, Tehran, Iran.,Center of Excellence for Color Science and Technology, Institute for Color Science and Technology, Tehran, Iran
| | - Seid Mahdi Jafari
- Department of Food Materials and Process Design Engineering, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
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Ali MA, Khan MAU, Rao AQ, Iqbal A, Din SU, Shahid AA. Biochemical evidence of epicuticular wax compounds involved in cotton-whitefly interaction. PLoS One 2021; 16:e0250902. [PMID: 33945542 PMCID: PMC8096116 DOI: 10.1371/journal.pone.0250902] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 04/15/2021] [Indexed: 11/18/2022] Open
Abstract
Sucking insects require a surface of plants on which the legs and the eggs of insects will adhere and to which insect mouthparts will access. The primary plant protection against insects is their surface property, which hinders the attachment of the insect’s legs and eggs. The epicuticular waxes chemistry influences the fine structure of the cuticular surface. In current study, an attempt was made to investigate the variation of chemical compounds in epicuticular waxes of four cotton species that classify them resistant or susceptible i.e., Gossypium abroreum, G. hirsutum, G. arboreum wax deficient mutant (GaWM3) and G. harknessi which were evaluated for their interaction with whitefly and CLCuV transmission. Gossypium hirsutum an insect and CLCuV susceptible cotton variety, was found to have four compounds namely Trichloroacetic acid, hexadecylester, P-xylenolpthalein, 2-cyclopentene-1-ol, 1-phenyl-and Phenol, 2,5-bis [1,1- dimethyl] which could interact with chitin of whitefly while only two compounds in Gossypium arboreum an insect and CLCuV resistant cotton variety could interact with chitin of whitefly. Similarly, GaWM3 and Gossypium harkasnessi were found to have only a single compound. Number of whiteflies found on leaves of G. hirsutum was much higher as compared to other cotton species. Keeping this fact in mind a wax biosynthetic gene CER3, from Arabidopsis thaliana was transformed into G. hirsutum and the plants were evaluated for their resistance against whitefly and CLCuV transmission. In microscopic analysis transgenic plants clearly showed higher amounts of leaf waxes as compared to non-transgenics. The least whitefly population and CLCuV titer of <10,000 units was found in transgenic plants compared to non-transgenic cotton where it was ≈4.5X106 units that confirmed the role of wax in insect interaction and ultimately to CLCuV transmission. This study provides novel insight on wax related compounds involved in cotton-whitefly interaction, which potentially can help in developing more efficient control strategies for this destructive pest.
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Affiliation(s)
- Muhammad Azam Ali
- Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan
- * E-mail:
| | | | - Abdul Qayyum Rao
- Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan
| | - Adnan Iqbal
- Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan
| | - Salah ud Din
- Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan
| | - Ahmad Ali Shahid
- Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan
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18
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Effect of Chitosan and Aloe Vera Extract Concentrations on the Physicochemical Properties of Chitosan Biofilms. Polymers (Basel) 2021; 13:polym13081187. [PMID: 33917123 PMCID: PMC8067903 DOI: 10.3390/polym13081187] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 03/26/2021] [Accepted: 04/03/2021] [Indexed: 12/23/2022] Open
Abstract
Chitosan films have been extensively studied as dressings in formulations for the treatment of chronic wounds. The incorporation of aloe vera (Aloe barbadensis Miller) into chitosan dressings could potentialize the healing process since aloe vera shows several pharmacological activities. This work aimed to evaluate the effect of aloe vera and chitosan concentrations on the physicochemical properties of the developed films. The films were obtained by casting technique and characterized with respect to their color parameters, morphology, barrier and mechanical properties, and thermal analysis. Results showed that the presence of aloe vera modified the films′ color parameters, changed barrier properties, increased fluid handling capacity (FHC), and decreased water-vapor permeability (WVP). The reduced elongation at break resulted in more rigid films. Aloe vera concentration did not significantly change film properties, but the presence of this gel increased the films’ stability at temperatures below 200 °C, showing similar behavior as chitosan films above 400 °C. The results suggest a crosslinking/complexation between chitosan and aloe vera, which combine appropriate physicochemical properties for application as wound dressing materials.
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Exopolysaccharides Production by Cultivating a Bacterial Isolate from the Hypersaline Environment of Salar de Uyuni (Bolivia) in Pretreatment Liquids of Steam-Exploded Quinoa Stalks and Enzymatic Hydrolysates of Curupaú Sawdust. FERMENTATION-BASEL 2021. [DOI: 10.3390/fermentation7010033] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The halotolerant bacterial strain BU-4, isolated from a hypersaline environment, was identified as an exopolysaccharide (EPS) producer. Pretreatment liquids of steam-exploded quinoa stalks and enzymatic hydrolysates of Curupaú sawdust were evaluated as carbon sources for EPS production with the BU-4 strain, and the produced EPS was characterized using FTIR, TGA, and SEM. Cultivation was performed at 30 °C for 48 h, and the cells were separated from the culture broth by centrifugation. EPS was isolated from the cell pellets by ethanol precipitation, and purified by trichloroacetic acid treatment, followed by centrifugation, dialysis, and freeze-drying. EPS production from quinoa stalks- and Curupaú sawdust-based substrates was 2.73 and 0.89 g L−1, respectively, while 2.34 g L−1 was produced when cultivation was performed on glucose. FTIR analysis of the EPS revealed signals typical for polysaccharides, as well as ester carbonyl groups and sulfate groups. High thermal stability, water retention capacity and gel-forming ability were inferred from SEM and TGA. The capability of the halotolerant isolate for producing EPS from pretreatment liquids and hydrolysates was demonstrated, and characterization of the EPS revealed their broad application potential. The study shows a way for producing value-added products from waste materials using a bacterium from a unique Bolivian ecosystem.
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20
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Filho ED, Brito EL, Nogueira DO, Fonseca JL. Thermal degradation and drug sorption in hybrid interpolyelectrolyte particles. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125894] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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21
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M Ahmed E, Saber D, Abd ElAziz K, Alghtani AH, Felemban BF, Ali HT, Megahed M. Chitosan-based nanocomposites: preparation and characterization for food packing industry. MATERIALS RESEARCH EXPRESS 2021; 8:025017. [DOI: 10.1088/2053-1591/abe791] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Abstract
In the present work, Cerium (IV)-Zirconium (IV) oxide nanoparticles (CeO4ZrNPs) was successfully dispersed into Chitosan/15Gelatin nanocomposites with different quantities. The obtained chitosan-based nanocomposites represented remarkable improvements in structural, morphological, mechanical, and thermal properties. Roughness increased from 74 nm to 6.4 nm, Young’s Modulus enhanced from 1.36 GPa to 2.99 GPa. The influence of dispersed CeO4ZrNPs contents on the phase transition temperature (T
g) and the non-isothermal degradation processes of chitosan-based nanocomposites were examined using Differential Scanning Galorimetry (DSC) with different heating rates. Kinetic parameters of the thermal degradation for chitosan-based nanocomposites were evaluated using Kissinger-Akahira-Sunose (KAS) and Kissenger (KIS) procedures. Chitosan-based nanocomposites showed an increase in the thermal degradation temperature with higher activation energies, indicating improved thermal stability. Thermal analysis demonstrated that chitosan-based nanocomposites became more ordered by increasing CeO4ZrNPs as inferred from the negative entropy increase. Moreover, the degradation of chitosan-based nanocomposites has been described as a non-spontaneous process. The resulting information is particularly important in applications in which there is a need to obtain chitosan nanocomposites with improved mechanical and thermal properties such as food packing industry.
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El Hamdaoui L, El Marouani M, El Bouchti M, Kifani‐Sahban F, El Moussaouiti M. Thermal Stability, Kinetic Degradation and Lifetime Prediction of Chitosan Schiff Bases Derived from Aromatic Aldehydes. ChemistrySelect 2021. [DOI: 10.1002/slct.202004071] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lahcen El Hamdaoui
- Laboratory of Materials, Nanotechnology and Environment, Center of Materials Sciences, Faculty of Sciences Mohammed V University in Rabat, Av Ibn Battouta B.P. 1014 Rabat 10000 Morocco
| | - Maryam El Marouani
- Department of Chemistry, College of Sciences University of Hafr Al Batin Hafr Al Batin Kingdom of Saudi Arabia
| | - Mehdi El Bouchti
- Laboratory REMTEX, ESITH Higher School of Textile and Clothing Industries) Casablanca Morocco
| | - Fatima Kifani‐Sahban
- Team of Modeling and Simulation in Mechanics and Energetic, Department of Physics, Faculty of Sciences Mohammed V University in Rabat, Av Ibn Battouta B.P. 1014 Rabat 10000 Morocco
| | - Mohammed El Moussaouiti
- Laboratory of Materials, Nanotechnology and Environment, Center of Materials Sciences, Faculty of Sciences Mohammed V University in Rabat, Av Ibn Battouta B.P. 1014 Rabat 10000 Morocco
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Degradation Kinetics and Shelf Life of N-acetylneuraminic Acid at Different pH Values. Molecules 2020; 25:molecules25215141. [PMID: 33167310 PMCID: PMC7663827 DOI: 10.3390/molecules25215141] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/30/2020] [Accepted: 11/02/2020] [Indexed: 11/24/2022] Open
Abstract
The objective of this study was to investigate the stability and degradation kinetics of N-acetylneuraminic acid (Neu5Ac). The pH of the solution strongly influenced the stability of Neu5Ac, which was more stable at neutral pH and low temperatures. Here, we provide detailed information on the degradation kinetics of Neu5Ac at different pH values (1.0, 2.0, 11.0 and 12.0) and temperatures (60, 70, 80 and 90 °C). The study of the degradation of Neu5Ac under strongly acidic conditions (pH 1.0–2.0) is highly pertinent for the hydrolysis of polysialic acid. The degradation kinetics of alkaline deacetylation were also studied. Neu5Ac was highly stable at pH 3.0–10.0, even at high temperature, but the addition of H2O2 greatly reduced its stability at pH 5.0, 7.0 and 9.0. Although Neu5Ac has a number of applications in products of everyday life, there are no reports of rigorous shelf-life studies. This research provides kinetic data that can be used to predict product shelf lives at different temperatures and pH values.
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Estrada-Montaño AS, Espinobarro-Velázquez D, Sauzameda M, Terrazas E, Reyes-Martínez R, Lardizábal D, Manjarrez-Nevárez LA, Zaragoza-Galán G. Photoluminescence in non-conjugated polyelectrolyte films containing 7-hydroxy-flavylium cation. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-019-02975-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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25
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Li W, Pang X, Xiao J, Wang X, He R, Zhao X. Degradation kinetics of pelargonidin-3-(p-coumaroyl)diglucoside-5-(malonyl)glucoside and pelargonidin-3-(feruloyl)diglucoside-5-(malonyl)glucoside in red radish during air-impingement jet drying. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109390] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Li W, Bi J, Li Y, Chen C, Zhao X, Zheng Q, Tan S, Gao X. Chemometric analysis reveals influences of hot air drying on the degradation of polyphenols in red radish. INTERNATIONAL JOURNAL OF FOOD ENGINEERING 2020. [DOI: 10.1515/ijfe-2019-0387] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractHot air drying is a commonly used technology in the preservation of red radish. This study was designed to investigate the correlations among total polyphenol content, total flavonoid content, antioxidant activities and polyphenol compounds in hot air dried red radish via chemometric analysis. UHPLC-QqQ-MS/MS analysis detected nine non-anthocyanin polyphenols and one anthocyanin in fresh and dried red radish samples, and found that hot air drying at 80 °C caused an increase in the p-coumaric acid and ferulic acid content of the red radish. The integral effect of hot air drying on the polyphenol profile of red radish was analyzed by principle component analysis, while sparse partial least squares-discriminant analysis showed that hot air drying induced changes mainly in the contents of poncirin, naringenin, phloetin and cyanidin-3-glucoside. These polyphenol degradations occurred as non-spontaneous and endothermic reactions during the hot air drying process, following first-order reaction kinetics.
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Affiliation(s)
- Wenfeng Li
- School of Life Science and Biotechnology, Yangtze Normal University, 16 Juxian Road, Fuling District, 408100, Chongqing, China
| | - Jiao Bi
- School of Life Science and Biotechnology, Yangtze Normal University, 408100, Chongqing, China
| | - Yuhong Li
- School of Life Science and Biotechnology, Yangtze Normal University, 408100, Chongqing, China
| | - Chunlian Chen
- School of Life Science and Biotechnology, Yangtze Normal University, 408100, Chongqing, China
| | - Xin Zhao
- Chongqing Collaborative Innovation Center for Functional Food, Chongqing University of Education, 400067, Chongqing, China
| | - Qiaoran Zheng
- School of Life Science and Biotechnology, Yangtze Normal University, 408100, Chongqing, China
| | - Si Tan
- School of Life Science and Biotechnology, Yangtze Normal University, 408100, Chongqing, China
| | - Xiaoxv Gao
- School of Life Science and Biotechnology, Yangtze Normal University, 408100, Chongqing, China
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Patnaik S, Kumar S, Panda AK. Thermal degradation of eco-friendly alternative plastics: kinetics and thermodynamics analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:14991-15000. [PMID: 32065367 DOI: 10.1007/s11356-020-07919-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 01/28/2020] [Indexed: 06/10/2023]
Abstract
This work reports the thermal degradation behaviour, kinetics and thermodynamics of two different eco-friendly plastics, viz. non-woven plastic and corn starch-based biodegradable plastics, which are commonly used nowadays as an alternative to synthetic plastics. In this context, thermogravimetric analysis of plastic waste samples was carried out at wide range of heating rates of 10, 20, 40, 60, 80 and 100 °C/min in nitrogen atmosphere, and activation energy is determined by first-order model-fitting method while thermodynamic parameters are determined on the basis of Eyring theory of activated complex. The regression coefficient obtained from kinetic study of thermal degradation of these plastics best fits to the first-order kinetic equation. The kinetics and thermodynamic parameters obtained for both the plastics are found very close to each other. So, this study would help design more effective conversion system for the recycling of both the wastes together.
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Affiliation(s)
- Satyanarayan Patnaik
- Department of Chemistry, Veer Surendra Sai University of Technology, Burla, Odisha, India
| | - Sachin Kumar
- Department of Energy Engineering and Centre of Excellence in Green & Efficient Energy Technology (CoE-GEET), Central University of Jharkhand, Ranchi, Jharkhand, 835205, India
| | - Achyut K Panda
- Department of Chemistry, Veer Surendra Sai University of Technology, Burla, Odisha, India.
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Marangoni Júnior L, De Bastiani G, Vieira RP, Anjos CAR. Thermal degradation kinetics of total anthocyanins in açaí pulp and transient processing simulations. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2340-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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29
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Synthesis of physically crosslinked PVA/Chitosan loaded silver nanoparticles hydrogels with tunable mechanical properties and antibacterial effects. Int J Biol Macromol 2020; 149:1262-1274. [DOI: 10.1016/j.ijbiomac.2020.02.048] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 02/04/2020] [Accepted: 02/06/2020] [Indexed: 11/18/2022]
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Franca JR, Fuscaldi LL, Ribeiro TG, Foureaux G, Cesar ALA, Castilho RO, Cronemberger S, Ferreira AJ, Fernandes SOA, Cardoso VN, Faraco AAG. Use of chitosan as pharmaceutical excipient in ocular drug delivery systems: Sterilization and pharmacokinetics. J Biomed Mater Res B Appl Biomater 2020; 108:2227-2237. [DOI: 10.1002/jbm.b.34560] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 12/13/2019] [Accepted: 01/08/2020] [Indexed: 11/09/2022]
Affiliation(s)
- Juçara R. Franca
- Department of Pharmaceutical Products, Faculty of PharmacyFederal University of Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - Leonardo L. Fuscaldi
- Department of Clinical and Toxicological Analysis, Faculty of PharmacyFederal University of Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - Tatiana G. Ribeiro
- Department of Pharmaceutical Products, Faculty of PharmacyFederal University of Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - Giselle Foureaux
- Department of Morphology, Institute of Biological SciencesFederal University of Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - Aina L. A. Cesar
- Department of Pharmaceutical Products, Faculty of PharmacyFederal University of Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - Rachel O. Castilho
- Department of Pharmaceutical Products, Faculty of PharmacyFederal University of Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - Sebastião Cronemberger
- Department of Ophthalmology and Otolaryngology, Faculty of MedicineFederal University of Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - Anderson J. Ferreira
- Department of Morphology, Institute of Biological SciencesFederal University of Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - Simone O. A. Fernandes
- Department of Clinical and Toxicological Analysis, Faculty of PharmacyFederal University of Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - Valbert N. Cardoso
- Department of Clinical and Toxicological Analysis, Faculty of PharmacyFederal University of Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - André A. G. Faraco
- Department of Pharmaceutical Products, Faculty of PharmacyFederal University of Minas Gerais Belo Horizonte Minas Gerais Brazil
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Oliveira LMD, Antelo F. Thermostability of the visual color and anthocyanins from Rio-Grande-Cherry (Eugenia involucrata DC). BRAZILIAN JOURNAL OF FOOD TECHNOLOGY 2020. [DOI: 10.1590/1981-6723.14019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract The extract of Rio-Grande-Cherry (Eugenia involucrata DC), pure and with stevia addition (0.75% and 1.5%) and sucrose addition (20% and 40%), was subjected to heat treatment at 10 °C, 25 °C and between 50 °C and 90 °C. Anthocyanins and the color parameters C* and TCD (total color difference) followed first-order reaction kinetics while h° followed a zero order kinetic model, under all conditions. The addition of sweeteners, through the reduction of water activity, influenced the thermal stability of the anthocyanins and of the color parameters C*, h° and TCD was the most pronounced effect in the latter. The lower the temperatures, the most relevant was the effect of the sweeteners on increasing half-life. Thermodynamically, the degradation reaction of anthocyanins was defined as endothermic, as well as non-spontaneous and transition state of the molecules more structurally organized than the reactants.
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Comprehensive evaluation of chitosan nanoparticle based phage lysin delivery system; a novel approach to counter S. pneumoniae infections. Int J Pharm 2019; 573:118850. [PMID: 31759993 DOI: 10.1016/j.ijpharm.2019.118850] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Revised: 10/21/2019] [Accepted: 11/04/2019] [Indexed: 12/18/2022]
Abstract
Cpl-1, an endolysin derived from Cp-1 phage has been found to be effective in a number of in-vitro and in-vivo pneumococcal infection models. However its lower bioavailability under in-vivo conditions limits its applicability as therapeutic agent. In this study, Cpl-1 loaded chitosan nanoparticles were set up in order to develop a novel therapeutic delivery system to counter antibiotic resistant S. pneumoniae infections. Interactions of chitosan and Cpl-1 were studied by in-silico docking analysis. Chitosan nanoparticles and Cpl-1 loaded chitosan nanoparticles were prepared by using ionic gelation method and the process was optimized by varying chitosan:TPP ratio, pH, stirring time, stirring rate and Cpl-1 concentration. Chitosan nanoparticles and Cpl-1 loaded chitosan nanoparticles were characterized to ascertain successful formation of nanoparticles and entrapment of Cpl-1 into nanoparticles. Chitosan nanoparticles and Cpl-1 loaded nanoparticles were also evaluated for nanoparticle yield, entrapment efficiency, in-vitro release, stability, structural integrity of Cpl-1, in-vitro bioassay, swelling studies, in-vitro biodegradation and heamolysis studies. Mucoadhesion behavior of chitosan nanoparticles and Cpl-1 loaded nanoparticles was explored using mucous glycoprotein assay and ex-vivo mucoadhesion assay, both preparations exhibited their mucoadhesive nature. Cellular cytotoxicity and immune stimulation studies revealed biocompatible nature of nanoparticles. The results of this study confirm that chitosan nanoparticles are a promising biocompatible candidate for Cpl-1 delivery with a significant potential to increase bioavailability of enzyme that in turn can increase its in-vivo half life to treat S. pneumoniae infections.
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Sprayed in-situ synthesis of polyvinyl alcohol/chitosan loaded silver nanocomposite hydrogel for improved antibacterial effects. Int J Biol Macromol 2019; 145:950-964. [PMID: 31669274 DOI: 10.1016/j.ijbiomac.2019.09.186] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 09/05/2019] [Accepted: 09/22/2019] [Indexed: 11/23/2022]
Abstract
To overcome the practical limitations of hydrogel preparations, applications and strength-based problems, the present study utilizes the use of sprayers for preparing polyvinyl alcohol/chitosan (PVA/CH) hydrogels. The particle size, morphology, stability, release studies and antibacterial activity of silver nanoparticles (AgNPs) had been studied. The particle size of AgNPs was found to be in the range of 4.59-10 nm (75 °C) with a polydispersity index (PDI) of 0.84. The morphological images exhibited inter-connecting porous structure with pore size in submicron's (<1 µm). Major infra-red spectral peaks of PVA (2946.67 cm-1; stretching of CH, 1142.72 cm-1; CO stretching) and CH (3287.49 cm-1; OH stretching, 2917.48 cm-1; CH stretching) maintain their place in PVA/CH and PVA/CH/Ag hydrogels. In addition, X-ray diffraction (XRD) pattern showed peaks with 2θ values at 38.08°, 44.29° and 64.50° corresponding to the crystal planes of (1 1 1), (2 0 0) and (2 2 0), respectively, allocated to face-centered cubic crystalline structure of AgNPs. The drug release and antibacterial studies showed a maximum release of 91.83% from hydrogels and a concentration dependent zone of inhibition (ZOI) for >24 h, respectively. Thus, the newly developed sprayed hydrogels could turn out to be a suitable dressing material for wound healing applications.
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Chen XL, Li F, Xie XJ, Li Z, Chen L. Nanoscale Zero-Valent Iron and Chitosan Functionalized Eichhornia crassipes Biochar for Efficient Hexavalent Chromium Removal. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16173046. [PMID: 31443402 PMCID: PMC6747384 DOI: 10.3390/ijerph16173046] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/04/2019] [Accepted: 08/19/2019] [Indexed: 02/06/2023]
Abstract
Sorption is widely used for the removal of toxic heavy metals such as hexavalent chromium (Cr(VI)) from aqueous solutions. Green sorbents prepared from biomass are attractive, because they leverage the value of waste biomass and reduce the overall cost of water treatment. In this study, we fabricated biochar (BC) adsorbent from the biomass of water hyacinth (Eichhornia crassipes), an invasive species in many river channels. Pristine BC was further modified with nanoscale zero-valent iron (nZVI) and stabilized with chitosan (C) to form C–nZVI–BC. C–nZVI–BC adsorbent showed high hexavalent chromium sorption capacity (82.2 mg/g) at pH 2 and removed 97.34% of 50 mg/L Cr(VI) from aqueous solutions. The sorption capacity of chitosan–nZVI-modified biochar decreased while increasing the solution pH value and ionic strength. The results of a sorption test indicated that multiple mechanisms accounted for Cr(VI) removal by C–nZVI–BC, including complexation, precipitation, electrostatic interactions, and reduction. Our study suggests a way of adding value to biomass waste by considering environmental treatment purposes.
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Affiliation(s)
- Xue-Li Chen
- School of Civil Engineering & Transportation, South China University of Technology, Guangzhou 510640, China
| | - Feng Li
- School of Civil Engineering & Transportation, South China University of Technology, Guangzhou 510640, China.
| | - Xiao Jie Xie
- School of Civil Engineering & Transportation, South China University of Technology, Guangzhou 510640, China
| | - Zhi Li
- San Bernardino, California State University, San Bernardino, CA 92407, USA
| | - Long Chen
- Department of Civil and Environmental Engineering, Northeastern University, Boston, MA 02115, USA.
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35
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Faqhiri H, Hannula M, Kellomäki M, Calejo MT, Massera J. Effect of Melt-Derived Bioactive Glass Particles on the Properties of Chitosan Scaffolds. J Funct Biomater 2019; 10:E38. [PMID: 31412615 PMCID: PMC6787686 DOI: 10.3390/jfb10030038] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 08/05/2019] [Accepted: 08/08/2019] [Indexed: 11/16/2022] Open
Abstract
This study reports on the processing of three-dimensional (3D) chitosan/bioactive glass composite scaffolds. On the one hand, chitosan, as a natural polymer, has suitable properties for tissue engineering applications but lacks bioactivity. On the other hand, bioactive glasses are known to be bioactive and to promote a higher level of bone formation than any other biomaterial type. However, bioactive glasses are hard, brittle, and cannot be shaped easily. Therefore, in the past years, researchers have focused on the processing of new composites. Difficulties in reaching composite materials made of polymer (synthetic or natural) and bioactive glass include: (i) The high glass density, often resulting in glass segregation, and (ii) the fast bioactive glass reaction when exposed to moisture, leading to changes in the glass reactivity and/or change in the polymeric matrix. Samples were prepared with 5, 15, and 30 wt% of bioactive glass S53P4 (BonAlive ®), as confirmed using thermogravimetric analysis. MicrO-Computed tomography and optical microscopy revealed a flaky structure with porosity over 80%. The pore size decreased when increasing the glass content up to 15 wt%, but increased back when the glass content was 30 wt%. Similarly, the mechanical properties (in compression) of the scaffolds increased for glass content up to 15%, but decreased at higher loading. Ions released from the scaffolds were found to lead to precipitation of a calcium phosphate reactive layer at the scaffold surface. This is a first indication of the potential bioactivity of these materials. Overall, chitosan/bioactive glass composite scaffolds were successfully produced with pore size, machinability, and ability to promote a calcium phosphate layer, showing promise for bone tissue engineering and the mechanical properties can justify their use in non-load bearing applications.
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Affiliation(s)
- Hamasa Faqhiri
- Faculty of Medicine and Health Technology, Tampere University, 33720 Tampere, Finland
| | - Markus Hannula
- Faculty of Medicine and Health Technology, Tampere University, 33720 Tampere, Finland
| | - Minna Kellomäki
- Faculty of Medicine and Health Technology, Tampere University, 33720 Tampere, Finland
| | - Maria Teresa Calejo
- Faculty of Medicine and Health Technology, Tampere University, 33720 Tampere, Finland
| | - Jonathan Massera
- Faculty of Medicine and Health Technology, Tampere University, 33720 Tampere, Finland.
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36
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Wu ZH, Zhou B, Fan QX, Cai YJ. Thermal degradation kinetics investigation on Nano-ZnO/IFR synergetic flame retarded polypropylene/ethylene-propylene-diene monomer composites processed via different fields. E-POLYMERS 2019. [DOI: 10.1515/epoly-2019-0007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractIn the field of polymer processing, disperse phase exhibited better dispersion and distribution performance in elongational field rather than shearing field. This property commonly brought a better functional feature for polymer composites. It could also be applied to Nano-ZnO/IFR synergetic flame retarded polypropylene/ ethylene-propylene-diene monomer composites. An experiment was designed to study the mechanism of improving flame retardant properties. In the experiment, the same formulas of composites were extruded by vane extruder (represents elongational field) and three-screw extruder (represents shearing field). Then Kissinger method and Flynn-Wall-Ozawa method were used to mutually proved that Nano-ZnO with better dispersion condition catalysed a more intense esterification of IFR in the whole thermal degradation process.
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Affiliation(s)
- Zheng-Huan Wu
- National-Local Joint Engineering Laboratory of Intelligent Manufacturing Oriented Automobile Die & Mould, Tianjin University of Technology and Education, Tianjin300222, China
- National Mold Product Quality Supervision & Inspection Center (Guangdong), NO.10 lianhu road, Chang’an town, Dongguan city, Guangdong 523841, China
- Key Laboratory of Tianjin Automobile Injection Mold Enterprise, Tianjin300222, PR China
- College of Mechanical Engineering, Tianjin Key Laboratory of High Speed Cutting and Precision Machining, Tianjin University of Technology and Education, Tianjin300222, China
| | - Bin Zhou
- National Mold Product Quality Supervision & Inspection Center (Guangdong), NO.10 lianhu road, Chang’an town, Dongguan city, Guangdong 523841, China
| | - Qi-Xiang Fan
- College of Mechanical Engineering, Tianjin Key Laboratory of High Speed Cutting and Precision Machining, Tianjin University of Technology and Education, Tianjin300222, China
| | - Yu-Jun Cai
- National-Local Joint Engineering Laboratory of Intelligent Manufacturing Oriented Automobile Die & Mould, Tianjin University of Technology and Education, Tianjin300222, China
- Key Laboratory of Tianjin Automobile Injection Mold Enterprise, Tianjin300222, PR China
- College of Mechanical Engineering, Tianjin Key Laboratory of High Speed Cutting and Precision Machining, Tianjin University of Technology and Education, Tianjin300222, China
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Lahijani P, Mohammadi M, Mohamed AR. Catalytic CO 2 gasification of rubber seed shell-derived hydrochar: reactivity and kinetic studies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:11767-11780. [PMID: 30815812 DOI: 10.1007/s11356-019-04613-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 02/18/2019] [Indexed: 06/09/2023]
Abstract
In this study, hydrothermal carbonization (HTC) of a biomass was used as a means to improve the physicochemical properties of rubber seed shell (RSS) and enhance its reactivity in the char-CO2 gasification reaction, known as the Boudouard reaction (C + CO2 ↔ 2CO). Hydrochar samples were developed by hydrothermal treatment of RSS, without separating the solid residue from the liquid product, at 433, 473, 513, and 553 K under autogenous pressure. The CO2 gasification reactivity of the developed hydrochars was then investigated at different heating rates (5, 10, 20, and 30 K/min) by the non-isothermal thermogravimetric method. The hydrochars revealed higher reactivity and improved gasification characteristics compared to the untreated biomass, while the hydrochar which was filtered from the liquid slurry showed lower reactivity compared to the untreated biomass. This was due to the chemical and structural evolutions of the biomass during hydrothermal treatment as indicated by various analyses. The gasification reactivity of the hydrochar was substantially enhanced by introduction of a catalyst (NaNO3) during HTC. Kinetic analysis of the char-CO2 gasification reaction was carried out by applying Flynn-Wall-Ozawa (FWO), Kissinger-Akahira-Sunose (KAS), and Starink isoconversional methods, and thermodynamic parameters were also determined. The activation energy of the Na-loaded RSS hydrochar in CO2 gasification (120-154 kJ/mol) was considerably lower than that of the untreated biomass (153-172 kJ/mol). Thermodynamic studies also confirmed the promoting effect of hydrothermal treatment and catalyst impregnation on enhancement of reactivity of the virgin biomass and reduction of gasification temperature.
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Affiliation(s)
- Pooya Lahijani
- Low Carbon Economy (LCE) Research Group, School of Chemical Engineering, Universiti Sains Malaysia, 14300, Nibong Tebal, Pulau Pinang, Malaysia
| | - Maedeh Mohammadi
- Faculty of Chemical Engineering, Babol Noushirvani University of Technology, Babol, 47148, Iran
| | - Abdul Rahman Mohamed
- Low Carbon Economy (LCE) Research Group, School of Chemical Engineering, Universiti Sains Malaysia, 14300, Nibong Tebal, Pulau Pinang, Malaysia.
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38
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Synthesis, Nanomechanical Characterization and Biocompatibility of a Chitosan-Graft-Poly(ε-caprolactone) Copolymer for Soft Tissue Regeneration. MATERIALS 2019; 12:ma12010150. [PMID: 30621234 PMCID: PMC6337280 DOI: 10.3390/ma12010150] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 12/21/2018] [Accepted: 12/27/2018] [Indexed: 11/17/2022]
Abstract
Tissue regeneration necessitates the development of appropriate scaffolds that facilitate cell growth and tissue development by providing a suitable substrate for cell attachment, proliferation, and differentiation. The optimized scaffolds should be biocompatible, biodegradable, and exhibit proper mechanical behavior. In the present study, the nanomechanical behavior of a chitosan-graft-poly(ε-caprolactone) copolymer, in hydrated and dry state, was investigated and compared to those of the individual homopolymers, chitosan (CS) and poly(ε-caprolactone) (PCL). Hardness and elastic modulus values were calculated, and the time-dependent behavior of the samples was studied. Submersion of PCL and the graft copolymer in α-MEM suggested the deterioration of the measured mechanical properties as a result of the samples’ degradation. However, even after three days of degradation, the graft copolymer presented sufficient mechanical strength and elastic properties, which resemble those reported for soft tissues. The in vitro biological evaluation of the material clearly demonstrated that the CS-g-PCL copolymer supports the growth of Wharton’s jelly mesenchymal stem cells and tissue formation with a simultaneous material degradation. Both the mechanical and biological data render the CS-g-PCL copolymer appropriate as a scaffold in a cell-laden construct for soft tissue engineering.
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39
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Chitosan/Copaiba oleoresin films for would dressing application. Int J Pharm 2019; 555:146-152. [DOI: 10.1016/j.ijpharm.2018.11.054] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 11/16/2018] [Accepted: 11/19/2018] [Indexed: 12/23/2022]
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40
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Amriani F, Bani O, Muryanto M, Sari AA, Sudiyani Y. The enhancement of black liquor treatment by applying a natural flocculant and converting its sludge to a high‐benefit product. CAN J CHEM ENG 2018. [DOI: 10.1002/cjce.23300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Feni Amriani
- Research Center for ChemistryIndonesian Institute of SciencesKawasan PUSPIPTEK SerpongBanten 15314Indonesia
| | - Okta Bani
- Department of Chemical EngineeringUniversity of Sumatera UtaraPadang BulanMedanIndonesia 20155
| | - Muryanto Muryanto
- Research Center for ChemistryIndonesian Institute of SciencesKawasan PUSPIPTEK SerpongBanten 15314Indonesia
| | - Ajeng Arum Sari
- Research Center for ChemistryIndonesian Institute of SciencesKawasan PUSPIPTEK SerpongBanten 15314Indonesia
| | - Yanni Sudiyani
- Research Center for ChemistryIndonesian Institute of SciencesKawasan PUSPIPTEK SerpongBanten 15314Indonesia
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41
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Janković B. Reliable method for determining the complete kinetic and thermodynamic information for thermal degradation of polymers in a multi-step process. Colloid Polym Sci 2018. [DOI: 10.1007/s00396-018-4366-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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42
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Morlando A, Sencadas V, Cardillo D, Konstantinov K. Suppression of the photocatalytic activity of TiO 2 nanoparticles encapsulated by chitosan through a spray-drying method with potential for use in sunblocking applications. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2018.01.057] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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43
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Thermosensitive chitosan/phosphate hydrogel-composites fortified with Ag versus Ag@Pd for biomedical applications. Life Sci 2018; 194:185-195. [DOI: 10.1016/j.lfs.2017.12.021] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 12/06/2017] [Accepted: 12/14/2017] [Indexed: 01/04/2023]
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44
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Zhang H, Lu Y, Wang Y, Zhang X, Wang T. d-Glucosamine production from chitosan hydrolyzation over a glucose-derived solid acid catalyst. RSC Adv 2018; 8:5608-5613. [PMID: 35542433 PMCID: PMC9078138 DOI: 10.1039/c7ra12490b] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 01/18/2018] [Indexed: 11/22/2022] Open
Abstract
A glucose-based solid acid catalyst (GSA) was synthesized by hydrothermal carbonization and its physicochemical properties were explored by various characterization techniques including IR, TG and SEM. In addition, its catalytic performance towards d-glucosamine formation from the hydrolysis of chitosan was extensively investigated to determine the effects of reaction parameters, such as reaction temperature, time and mass ratio of catalyst and reactants. The experimental results revealed that the yield of targeted product d-glucosamine could reach as high as 98.1% under optimal conditions (temperature: 110 °C; time: 6 h). After six catalytic cycles, no evident deactivation was observed, suggesting the satisfactory stability of the investigated solid acid catalyst. This might provide insight on the development of suitable catalyst systems for d-glucosamine formation to replace homogeneous catalysts. A method for preparing d-glucosamine in aqueous phase by chitosan degradation by a solid acid, which resulted in high yields.![]()
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Affiliation(s)
- Hongkui Zhang
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116023
- China
| | - Yuting Lu
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116023
- China
| | - Yuanhao Wang
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116023
- China
| | - Xingrong Zhang
- State Key Laboratory of Mineral Processing
- Beijing General Research Institute of Mining and Metallurgy
- Beijing 102600
- China
| | - Tingyu Wang
- College of Chemistry, Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215006
- China
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45
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Lago CC, Noreña CPZ. Thermodynamic and kinetics study of phenolics degradation and color of yacon ( Smallanthus sonchifolius) microparticles under accelerated storage conditions. Journal of Food Science and Technology 2017; 54:4197-4204. [PMID: 29184225 DOI: 10.1007/s13197-017-2887-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 09/17/2017] [Accepted: 09/22/2017] [Indexed: 10/18/2022]
Abstract
This study aimed to investigate the kinetics and thermodynamic of the phenolics degradation and the kinetics of degradation of the total color difference of yacon juice microcapsules produced by spray drying using Gum Arabic and polydextrose as wall materials. The degradation of the microcapsule was evaluated by accelerated tests under controlled conditions at 35 and 45 °C, and relative humidity of 75 and 90%, for 35 days. Degradation of phenolics followed the first order model and the degradation constant was in the range of 0.0124-0.0209 days-1. The microparticles with gum Arabic were more stable than those with polydextrose for all conditions studied, with longer half-lives. Both wall materials showed similar thermodynamic characteristics, indicating similar mechanism of degradation of phenolics. With respect to the color parameters, the first order model adjusted to data of the total color difference, and no significant differences were observed for the conditions studied.
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Affiliation(s)
- Camila Carvalho Lago
- Institute of Food Science and Technology, Federal University of Rio Grande do Sul, Av. Bento Gonçalves, no 9500, Porto Alegre, RS CEP 91501-970 Brazil
| | - Caciano P Zapata Noreña
- Institute of Food Science and Technology, Federal University of Rio Grande do Sul, Av. Bento Gonçalves, no 9500, Porto Alegre, RS CEP 91501-970 Brazil
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46
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Viotto RS, Maia AAD, Yamaji FM, de Morais LC. Thermogravimetric investigation of spent shiitake substrate to solid biofuel. CAN J CHEM ENG 2017. [DOI: 10.1002/cjce.23026] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Renata Silva Viotto
- Institute of Science and Technology; São Paulo State University (UNESP) “Júlio de Mesquita Filho” Av. Três de Março; 511, Alto da Boa Vista, 18087-180 Sorocaba São Paulo Brazil
| | - Amanda Alves Domingos Maia
- Institute of Science and Technology; São Paulo State University (UNESP) “Júlio de Mesquita Filho” Av. Três de Março; 511, Alto da Boa Vista, 18087-180 Sorocaba São Paulo Brazil
| | - Fábio Minoru Yamaji
- Department of Environmental Sciences; Federal University of São Carlos (UFSCar); Rodovia João Leme dos Santos km 110, Itinga, 18052-780 Sorocaba, São Paulo Brazil
| | - Leandro Cardoso de Morais
- Institute of Science and Technology; São Paulo State University (UNESP) “Júlio de Mesquita Filho” Av. Três de Março; 511, Alto da Boa Vista, 18087-180 Sorocaba São Paulo Brazil
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47
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Peron D, Fraga S, Antelo F. Thermal degradation kinetics of anthocyanins extracted from juçara ( Euterpe edulis Martius) and “Italia” grapes ( Vitis vinifera L.), and the effect of heating on the antioxidant capacity. Food Chem 2017; 232:836-840. [DOI: 10.1016/j.foodchem.2017.04.088] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 10/24/2016] [Accepted: 04/15/2017] [Indexed: 11/30/2022]
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48
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Kuck LS, Wesolowski JL, Noreña CPZ. Effect of temperature and relative humidity on stability following simulated gastro-intestinal digestion of microcapsules of Bordo grape skin phenolic extract produced with different carrier agents. Food Chem 2017; 230:257-264. [DOI: 10.1016/j.foodchem.2017.03.038] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 02/16/2017] [Accepted: 03/08/2017] [Indexed: 12/19/2022]
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Zhou M, Chen Q, Bi J, Wang Y, Wu X. Degradation kinetics of cyanidin 3-O-glucoside and cyanidin 3-O-rutinoside during hot air and vacuum drying in mulberry (Morus alba L.) fruit: A comparative study based on solid food system. Food Chem 2017; 229:574-579. [DOI: 10.1016/j.foodchem.2017.02.131] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 02/23/2017] [Accepted: 02/28/2017] [Indexed: 10/20/2022]
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Thermal, structural and acetylation behavior of snail and periwinkle shells chitin. Prog Biomater 2017; 6:97-111. [PMID: 28726011 PMCID: PMC5597570 DOI: 10.1007/s40204-017-0070-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 07/06/2017] [Indexed: 02/01/2023] Open
Abstract
This article reports a successful removal of CaCO3 from snail and periwinkle shells for the purpose of producing high quality chitin for possible application as bio-fillers in bone fixation materials. Experiment was designed with varying concentrations of acid and alkali for demineralization, deproteinization and deacetylation of the samples. Thermal characteristics, morphology, degree of de-acetylation, crystalline structure and hydrogen bonding characteristics of the extracted chitin were examined. Infra-red spectra, thermogravimetric analysis and X-ray diffraction patterns show that demineralization with 1.7 M HCl led to a successful removal of CaCO3. Subsequent deproteinization and deacetylation with 1.2 M NaOH led to a development of chitosan having a degree of deacetylation of 77 and 60% for periwinkle and snail shells, respectively. Generally, all results show that different treatments led to different chitin structure and consequently different properties.
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