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Ravi D, Rajalekshmy GP, Rekha MR, Joseph R. Ascorbic acid-loaded gellan-g-poly(ethylene glycol) methacrylate matrix as a wound-healing material. Int J Biol Macromol 2023; 251:126243. [PMID: 37582430 DOI: 10.1016/j.ijbiomac.2023.126243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 07/24/2023] [Accepted: 08/07/2023] [Indexed: 08/17/2023]
Abstract
Ascorbic acid (AA) is one of the important biomolecules involved in all phases of wound healing. The aim of this study was to develop a new hydrogel system that offers topical delivery of ascorbic acid to wounds during wound care management. In this work, we grafted poly (ethylene glycol) methacrylate onto a renewable biopolymer gellan, and the graft copolymer (GPMA) formed was crosslinked covalently and ionically, and used as a matrix for delivering AA to the wounds. By the processes of grafting and crosslinking, the mechanical properties of the gellan increased several fold compared to mechanically weak native gellan. In vitro cytotoxicity evaluation showed that GPMA was non-cytotoxic to fibroblast cells. GPMA hydrogel matrix allowed the sustained release of AA. When AA was incorporated in GPMA, a significant improvement in wound closure was observed in scratch wound assay performed with keratinocytes. Since AA acts as a cofactor in collagen synthesis, the controlled delivery of AA to the wound microenvironment favors the up-regulation of colα1 gene expression. This study revealed that ascorbic acid, at a concentration of 150 μM, has a favorable impact on wound healing when tested in vitro. Overall results indicate that the GPMA matrix could be a promising material for wound healing applications.
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Affiliation(s)
- Dharavath Ravi
- Division of Biosurface Technology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences & Technology, Poojappura, Thiruvananthapuram, Kerala, India
| | - G P Rajalekshmy
- Division of Biosurface Technology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences & Technology, Poojappura, Thiruvananthapuram, Kerala, India
| | - M R Rekha
- Division of Biosurface Technology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences & Technology, Poojappura, Thiruvananthapuram, Kerala, India.
| | - Roy Joseph
- Polymeric Medical Devices, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences & Technology, Poojappura, Thiruvananthapuram, Kerala, India
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Leal AR, Oliveira LDS, Farias LM, Alves CAN, Costa JND, Mata P, Sousa PHMD. Elaboration of mixed structured fruit formulations with agar and gellan gum: Texture, physicochemical, and sensory properties. Int J Gastron Food Sci 2021. [DOI: 10.1016/j.ijgfs.2020.100294] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Tong K, Xiao G, Cheng W, Chen J, Sun P. Large amplitude oscillatory shear behavior and gelation procedure of high and low acyl gellan gum in aqueous solution. Carbohydr Polym 2018; 199:397-405. [PMID: 30143144 DOI: 10.1016/j.carbpol.2018.07.043] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 07/09/2018] [Accepted: 07/13/2018] [Indexed: 11/19/2022]
Abstract
The rheological properties of gellan fluid gels were investigated using large amplitude oscillatory shear (LAOS) technique in both linear and non-linear viscoelastic regimes, with consideration of high acyl (HA)/low acyl (LA) gellan ratio and Ca2+ concentration. The Lissajous curves and Chebyshev coefficients were used to analyze the LAOS data and successfully provided visual and quantitative representation of microstructural differences between HA and LA gellan gum, respectively. Temperature sweep measurements were performed to monitor the gelation procedure of gellan gum solution. The results show that HA gellan gum forms softer but more stable gels than LA gellan gum, especially at high temperature. And a synergistic interaction between HA and LA gellan gum may exist in the presence of abundant Ca2+ ions. The abovementioned study can allow a better understanding of structural characteristic of gellan gum and provide a practical approach to rheological assessment that facilitates the processing and diversified application of mixed gellan gum.
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Affiliation(s)
- Kefeng Tong
- Shanghai Chicmax Cosmetic Co., Ltd., Shanghai 200233, China.
| | - Guoping Xiao
- Shanghai Institute of Applied Physics, Chinese Academy of Science, Shanghai 201800, China
| | - Weifeng Cheng
- Shanghai Chicmax Cosmetic Co., Ltd., Shanghai 200233, China
| | - Jing Chen
- Shanghai Chicmax Cosmetic Co., Ltd., Shanghai 200233, China
| | - Peiwen Sun
- Shanghai Chicmax Cosmetic Co., Ltd., Shanghai 200233, China
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Hernández-Morales MDLÁ, Maldonado-Astudillo YI, Jiménez-Hernández J, Salazar R, Ramírez-Sucre MO, Ibarz A, Utrilla-Coello RG, Ortuño-Pineda C. Physicochemical and rheological properties of gum seed and pulp from Hymenaea courbaril L. CYTA - JOURNAL OF FOOD 2018. [DOI: 10.1080/19476337.2018.1513955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
| | - Yanik Ixchel Maldonado-Astudillo
- Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Guerrero, Ciudad Universitaria sur, Chilpancingo de los Bravo, Guerrero, México
- Universidad Autónoma de Guerrero, Calle Pino s/n, Acapulco, Guerrero, México
| | - Javier Jiménez-Hernández
- Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Guerrero, Ciudad Universitaria sur, Chilpancingo de los Bravo, Guerrero, México
- Universidad Autónoma de Guerrero, Calle Pino s/n, Acapulco, Guerrero, México
| | - Ricardo Salazar
- CONACyT-Universidad Autónoma de Guerrero, Chilpancingo de los Bravo, Guerrero, México
| | - Manuel Octavio Ramírez-Sucre
- Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C. Unidad Sureste, Carretera Sierra Papacal-Chuburná Puerto, Yucatán, México
| | - Albert Ibarz
- Department of Food Technology, School of Agricultural and Forestry Engineering, Universidad of Lleida, Lleida, Spain
| | | | - Carlos Ortuño-Pineda
- Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Guerrero, Ciudad Universitaria sur, Chilpancingo de los Bravo, Guerrero, México
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Morales-Contreras BE, Rosas-Flores W, Contreras-Esquivel JC, Wicker L, Morales-Castro J. Pectin from Husk Tomato (Physalis ixocarpa Brot.): Rheological behavior at different extraction conditions. Carbohydr Polym 2017; 179:282-289. [PMID: 29111053 DOI: 10.1016/j.carbpol.2017.09.097] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 09/26/2017] [Accepted: 09/28/2017] [Indexed: 01/25/2023]
Abstract
A rheological study was carried out to evaluate formulations of test dispersions and gels of high methoxyl pectins (HTHMP) obtained at different conditions from husk tomato waste (Physalis ixocarpa Brot.). The effect of extraction agent (hydrochloric acid or citric acid), blanching time (10 or 15min) and extraction time (15, 20 or 25min) on the rheology of the tested samples was evaluated. Flow behavior and activation energy were evaluated on the test dispersions, while (Ea) frequency sweeps, temperature sweep, creep-recovery test and penetration test were performed on the gels. HTHMP dispersions showed shear thinning flow behavior, while showing a good fit to Cross model. Extraction agent, blanching time and extraction time did not have effect on Cross parameters (ηz, η∞, C, and m). Ea decreased as blanching time and extraction time increased. Frequency sweeps revealed high dependence on frequency for both G' and G", while temperature sweeps (25- 95°C) showed thermostable husk tomato pectin gels. Hydrocloric acid (HCl) extracted pectin gels showed stronger structure than citric acid (CA) gels.
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Affiliation(s)
- Blanca E Morales-Contreras
- TECNM/Instituto Tecnológico de Durango, Blvd. Felipe Pescador 1803, Nueva Vizcaya, 34080 Durango, Dgo., Mexico
| | - Walfred Rosas-Flores
- TECNM/Instituto Tecnológico de Durango, Blvd. Felipe Pescador 1803, Nueva Vizcaya, 34080 Durango, Dgo., Mexico
| | - Juan C Contreras-Esquivel
- Universidad Autónoma de Coahuila, Facultad de Ciencias Químicas, Ing J. Cárdenas Valdez, República, Saltillo, Coah., Mexico
| | - Louise Wicker
- School of Nutrition and Food Sciences, Louisiana State University, Agricultural Center, Baton Rouge, LA 70808, USA; Department of Food Science and Technology, University of Georgia, Athens, GA 30602-7610, USA
| | - Juliana Morales-Castro
- TECNM/Instituto Tecnológico de Durango, Blvd. Felipe Pescador 1803, Nueva Vizcaya, 34080 Durango, Dgo., Mexico.
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Rafael EGC, Fredy CC, Arnulfo TD. Protection of Lactobacillus acidophilus under in vitro gastrointestinal conditions employing binary microcapsules containing inulin. ACTA ACUST UNITED AC 2017. [DOI: 10.5897/ajb2016.15700] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Gonçalves A, Rocha L, Dias J, Passarinha L, Sousa A. Optimization of a chromatographic stationary phase based on gellan gum using central composite design. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 957:46-52. [DOI: 10.1016/j.jchromb.2014.02.050] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Revised: 01/17/2014] [Accepted: 02/10/2014] [Indexed: 01/27/2023]
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Rosas-Flores W, Ramos-Ramírez EG, Salazar-Montoya JA. Microencapsulation of Lactobacillus helveticus and Lactobacillus delbrueckii using alginate and gellan gum. Carbohydr Polym 2013; 98:1011-7. [PMID: 23987441 DOI: 10.1016/j.carbpol.2013.06.077] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Revised: 06/28/2013] [Accepted: 06/29/2013] [Indexed: 11/25/2022]
Abstract
Sodium alginate (SA) at 2% (w/v) and low acylated gellan gum (LAG) at 0.2% (w/v) were used to microencapsulate Lactobacillus helveticus and Lactobacillus delbrueckii spp lactis by employing the internal ionic gelation technique through water-oil emulsions at three different stirring rates: 480, 800 and 1200 rpm. The flow behavior of the biopolymer dispersions, the activation energy of the emulsion, the microencapsulation efficiency, the size distribution, the microcapsules morphology and the effect of the stirring rate on the culture viability were analyzed. All of the dispersions exhibited a non-Newtonian shear-thinning flow behavior because the apparent viscosity decreased in value when the shear rate was increased. The activation energy was calculated using the Arrhenius-like equation; the value obtained for the emulsion was 32.59 kJ/mol. It was observed that at 400 rpm, the microencapsulation efficiency was 92.83%, whereas at 800 and 1200 rpm, the stirring rates reduced the efficiency to 15.83% and 4.56%, respectively, evidencing the sensitivity of the microorganisms to the shear rate (13.36 and 20.05 s(-1)). Both optical and scanning electron microscopy (SEM) showed spherical microcapsules with irregular topography due to the presence of holes on its surface. The obtained size distribution range was modified when the stirring rate was increased. At 400 rpm, bimodal behavior was observed in the range of 20-420 μm; at 800 and 1200 rpm, the behavior became unimodal and the range was from 20 to 200 μm and 20 to 160 μm, respectively.
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Affiliation(s)
- Walfred Rosas-Flores
- Department of Biotechnology and Bioengineering, CINVESTAV-IPN, Av. IPN 2508, P.O. Box 14-740, CP 07360, México city, Mexico
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