1
|
Carvalho R, Pedrosa C, Leal A, Palermo L, Mansur C. Extraction, characterization and rheological behavior of galactomannans in high salinity and temperature conditions. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2021. [DOI: 10.1080/1023666x.2021.1930748] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Raíssa Carvalho
- Laboratório de Macromoléculas e Colóides na Indústria de Petróleo, Instituto de Macromoléculas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Programa de Engenharia Metalúrgica e de Materiais-PEMM/COPPE, Universidade Federal do Rio de Janeiro, Brazil
| | - Carolina Pedrosa
- Laboratório de Macromoléculas e Colóides na Indústria de Petróleo, Instituto de Macromoléculas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alyce Leal
- Laboratório de Macromoléculas e Colóides na Indústria de Petróleo, Instituto de Macromoléculas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Luiz Palermo
- Laboratório de Macromoléculas e Colóides na Indústria de Petróleo, Instituto de Macromoléculas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Claudia Mansur
- Laboratório de Macromoléculas e Colóides na Indústria de Petróleo, Instituto de Macromoléculas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Programa de Engenharia Metalúrgica e de Materiais-PEMM/COPPE, Universidade Federal do Rio de Janeiro, Brazil
| |
Collapse
|
2
|
Freitas TKFS, Almeida CA, Manholer DD, Geraldino HCL, de Souza MTF, Garcia JC. Review of Utilization Plant-Based Coagulants as Alternatives to Textile Wastewater Treatment. TEXTILE SCIENCE AND CLOTHING TECHNOLOGY 2018. [DOI: 10.1007/978-981-10-4780-0_2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
3
|
Komlaga G, Cojean S, Dickson RA, Beniddir MA, Suyyagh-Albouz S, Mensah MLK, Agyare C, Champy P, Loiseau PM. Antiplasmodial activity of selected medicinal plants used to treat malaria in Ghana. Parasitol Res 2016; 115:3185-95. [DOI: 10.1007/s00436-016-5080-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 04/19/2016] [Indexed: 11/29/2022]
|
4
|
Bravo-Anaya LM, Rinaudo M, Martínez FAS. Conformation and Rheological Properties of Calf-Thymus DNA in Solution. Polymers (Basel) 2016; 8:polym8020051. [PMID: 30979142 PMCID: PMC6432584 DOI: 10.3390/polym8020051] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 02/03/2016] [Accepted: 02/05/2016] [Indexed: 11/30/2022] Open
Abstract
Studies of DNA molecule behavior in aqueous solutions performed through different approaches allow assessment of the solute-solvent interactions and examination of the strong influence of conformation on its physicochemical properties, in the presence of different ionic species and ionic concentrations. Firstly, the conformational behavior of calf-thymus DNA molecules in TE buffer solution is presented as a function of temperature. Secondly, their rheological behavior is discussed, as well as the evidence of the critical concentrations, i.e., the overlap and the entanglement concentrations (C* and Ce, respectively) from steady state flow and oscillatory dynamic shear experiments. The determination of the viscosity in the Newtonian plateau obtained from flow curves η (γ˙) allows estimation of the intrinsic viscosity and the specific viscosities at zero shear when C[η] < 40. At end, a generalized master curve is obtained from the variation of the specific viscosity as a function of the overlap parameter C[η]. The variation of the exponent s obtained from the power law η~γ˙−s for both flow and dynamic results is discussed in terms of Graessley’s analysis. In the semi-dilute regime with entanglements, a dynamic master curve is obtained as a function of DNA concentration (CDNA > 2.0 mg/mL) and temperature (10 °C < T < 40 °C).
Collapse
Affiliation(s)
- Lourdes Mónica Bravo-Anaya
- Grenoble Alpes University, Laboratoire Rhéologie et Procédés (LRP), F-38000, Grenoble 38000, France.
- Departamento de Ingeniería Química, Universidad de Guadalajara, Blvd. M. García Barragán, Guadalajara C.P. 44430, Jalisco, Mexico.
| | | | - Félix Armando Soltero Martínez
- Departamento de Ingeniería Química, Universidad de Guadalajara, Blvd. M. García Barragán, Guadalajara C.P. 44430, Jalisco, Mexico.
| |
Collapse
|
5
|
Nwokocha LM, Williams PA. Isolation and characterization of a novel polysaccharide from seeds of Peltophorum pterocarpum. Food Hydrocoll 2014. [DOI: 10.1016/j.foodhyd.2014.04.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
6
|
Hydrodynamic and rheological properties of Irvingia gabonensis gum. Carbohydr Polym 2014; 114:352-356. [DOI: 10.1016/j.carbpol.2014.07.071] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 07/22/2014] [Accepted: 07/23/2014] [Indexed: 11/21/2022]
|
7
|
Physicochemical and rheological characterization of Prosopis juliflora seed gum aqueous dispersions. Food Hydrocoll 2014. [DOI: 10.1016/j.foodhyd.2013.06.013] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
8
|
Albuquerque PBS, Barros W, Santos GRC, Correia MTS, Mourão PAS, Teixeira JA, Carneiro-da-Cunha MG. Characterization and rheological study of the galactomannan extracted from seeds of Cassia grandis. Carbohydr Polym 2014; 104:127-34. [PMID: 24607169 DOI: 10.1016/j.carbpol.2014.01.010] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2013] [Revised: 12/10/2013] [Accepted: 01/05/2014] [Indexed: 11/24/2022]
Abstract
Galactomannan extracted from seeds of Cassia grandis with 0.1M NaCl, followed by ethanol precipitation, presented a yield of 36 ± 8%. The polysaccharide has a constant mannose/galactose ratio (2.44:1). Methylation analysis, one and two dimensional NMR spectroscopy confirmed that the polysaccharide has a central core composed of 4-linked β-mannose units, with branches of galactose, linked to the carbohydrate core through α(1-6) linkage. The amorphous nature of the galactomannan was confirmed by X-ray diffraction. Rheological characterization exhibited Newtonian plateaus followed by shear-thinning zones characteristic of polymer solutions up to 1.5% (w/v) and above this value the system exhibited yield stress associated with a weak gel. Adjusting stress-strain curves confirmed a 1.6% (w/v) as the galactomannan concentration value for the sol-gel transition. These results indicate that the galactomannan extracted from C. grandis seeds presents rheological characteristics suitable for applications in pharmaceutical, biomedical, cosmetic and food industries.
Collapse
Affiliation(s)
- Priscilla B S Albuquerque
- Departamento de Bioquímica/Laboratório de Imunopatologia Keizo Asami-LIKA, Universidade Federal de Pernambuco, Avenue Prof. Moraes Rego s/n, Recife CEP: 50.670-420, PE, Brazil
| | - Wilson Barros
- Departamento de Física, Universidade Federal de Pernambuco, Avenue prof. Luiz Freire s/n, Recife CEP 50670-901, PE, Brazil
| | - Gustavo R C Santos
- Laboratório de Tecido Conjuntivo, Hospital Universitário Clementino Fraga Filho and Programa de Glicobiologia, Instituto de Bioquímica Médica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Maria T S Correia
- Departamento de Bioquímica/Laboratório de Imunopatologia Keizo Asami-LIKA, Universidade Federal de Pernambuco, Avenue Prof. Moraes Rego s/n, Recife CEP: 50.670-420, PE, Brazil
| | - Paulo A S Mourão
- Laboratório de Tecido Conjuntivo, Hospital Universitário Clementino Fraga Filho and Programa de Glicobiologia, Instituto de Bioquímica Médica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - José A Teixeira
- IBB-Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, Universidade do Minho, Campus de Gualtar, Braga 4710-057, Portugal
| | - Maria G Carneiro-da-Cunha
- Departamento de Bioquímica/Laboratório de Imunopatologia Keizo Asami-LIKA, Universidade Federal de Pernambuco, Avenue Prof. Moraes Rego s/n, Recife CEP: 50.670-420, PE, Brazil.
| |
Collapse
|
9
|
|
10
|
Doyle JP, Lyons G, Morris ER. New proposals on “hyperentanglement” of galactomannans: Solution viscosity of fenugreek gum under neutral and alkaline conditions. Food Hydrocoll 2009. [DOI: 10.1016/j.foodhyd.2008.09.007] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
11
|
Rinaudo M. Main properties and current applications of some polysaccharides as biomaterials. POLYM INT 2008. [DOI: 10.1002/pi.2378] [Citation(s) in RCA: 672] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
12
|
Ren Y, Picout DR, Ellis PR, Ross-Murphy SB, Reid JSG. A novel xyloglucan from seeds of Afzelia africana Se. Pers.—extraction, characterization, and conformational properties. Carbohydr Res 2005; 340:997-1005. [PMID: 15780264 DOI: 10.1016/j.carres.2005.01.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2004] [Accepted: 01/12/2005] [Indexed: 11/22/2022]
Abstract
This paper is the first multi-scale characterization of the xyloglucan extracted from seeds of the African tree Afzelia africana Se. Pers. It describes the extraction and characterization of this polysaccharide in terms of both primary monosaccharide and oligosaccharide composition. It also includes a study of the seed morphology. Morphological characterization includes optical, transmission, and scanning electron microscopy. The polysaccharide exists in thickened cell walls of the cotyledonary cells, and the extracted xyloglucan is structurally quite similar to those from tamarind seed and detarium. Nevertheless there are some subtle differences in the fine structure, particularly in the oligomeric xyloglucan composition. The chain flexibility of the polysaccharide is also discussed in the light of our recent measurements reported elsewhere [Biomacromolecules2004, 5, 2384-2391].
Collapse
Affiliation(s)
- Yilong Ren
- Department of Life Sciences, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, UK
| | | | | | | | | |
Collapse
|
13
|
Mazeau K, Rinaudo M. The prediction of the characteristics of some polysaccharides from molecular modeling. Comparison with effective behavior. Food Hydrocoll 2004. [DOI: 10.1016/j.foodhyd.2004.04.004] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
14
|
Abstract
This paper concerns the influence of the chemical structure on the physical properties of some polysaccharides. Especially, we proposed to discuss the role of the substituents on these properties. In some cases, non-carbohydrate substituents play a minor role on rheological properties in the presence of a salt excess as shown on xanthan and succinoglycan. The rheology of aqueous solution of these stereoregular polysaccharides is controlled by the conformation (helical conformation) whose stability is not largely influenced by these substituents. On the other hand, the interaction between galactomannan and xanthan depends on the presence of acetyl substituents on xanthan but also on the xanthan conformation. However, for polymers such as gellan, XM-6 or BEC 1615, complete deacetylation induces the ability to form physical gels in given thermodynamic conditions. The presence of carbohydrate substituents or short side chains was also examined. Especially in the gellan family, the role of position of substitution (position 3 on the glucose unit C or position 6 on the A glucose) was presented. It is concluded that the substituents giving the higher stability for the helical conformation (higher DeltaH and Tm values) also cause a lower salt sensitivity for the helical stability. The role of the substituents on the properties is also described for natural polymers and their chemically or enzymatically modified derivatives.
Collapse
Affiliation(s)
- M Rinaudo
- Centre de Recherche sur les Macromolécules Végétales, CNRS, associated with Joseph Fourier University, BP 53, 38041 Grenoble Cedex 9, France.
| |
Collapse
|
15
|
Joshi H, Kapoor VP. Cassia grandis Linn. f. seed galactomannan: structural and crystallographical studies. Carbohydr Res 2003; 338:1907-12. [PMID: 12932375 DOI: 10.1016/s0008-6215(03)00258-1] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Cassia grandis is a small or medium sized tree, found in abundance throughout India. The seeds contain about 50% endosperm gum and possess the characteristics of becoming a potential source of seed gum. The purified polysaccharide has been characterized as a pure galactomannan having a mannose-galactose ratio of 3.15; molecular weight (Mw) 80,200; polydispersity (Mw/Mn), 1.35 and intrinsic viscosity [eta], 848 mL/g. Methylation, periodate oxidation, Smith degradation and 13C NMR studies confirm that the polysaccharide has the basic structure of legume galactomannans consisting of a beta-(1-->4)-linked main mannan backbone to which galactose units are attached at O-6. The orthorhombic lattice constants of the hydrated gum are as follows: a=9.00, b=24.81, c=10.30 A. The crystallographic data establish that the probable space group symmetry of the unit cell is P2(1)2(1)2. The results are in contradiction to earlier reports (Indian J. Chem. 16B (1978) 966; J. Indian Chem. Soc. 55 (1978) 1216) in which a non-galactomannan polysaccharide structure has been assigned having a main chain of (1-->4)-linked galactose and mannose units in the molar ratio 6:3, where 50% of the galactose units branched with two galactose and one mannose through 1-->3 linkage.
Collapse
Affiliation(s)
- Harsha Joshi
- National Botanical Research Institute, Rana Pratap Marg, Lucknow 226 001, India
| | | |
Collapse
|
16
|
Rinaudo M. Relation between the molecular structure of some polysaccharides and original properties in sol and gel states. Food Hydrocoll 2001. [DOI: 10.1016/s0268-005x(01)00041-8] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
17
|
|
18
|
Kapoor VP, Taravel FR, Joseleau JP, Milas M, Chanzy H, Rinaudo M. Cassia spectabilis DC seed galactomannan: structural, crystallographical and rheological studies. Carbohydr Res 1998; 306:231-41. [PMID: 9691448 DOI: 10.1016/s0008-6215(97)00241-3] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The seeds of Cassia spectabilis DC (family: Leguminoseae), an Indian fast growing spreading tree, contain about 40% of endosperm and possess the characteristics of becoming a potential source of commercial gum. The purified galactomannan shows Mw 1.1 x 10(6), intrinsic viscosity [eta] 615ml/g with k' = 1.706 x 10(-1), and a mannose to galactose ration of 2.65. The hydrolysis of the fully methylated polysaccharide reveals clearly the expected structure of legume galactomannans. The orthorhombic lattice constants of the hydrated gums are as follows: a = 9.12 A, b = 25.63 A and c = 10.28 A. The results of X-ray fiber studies show that the b dimension of the unit cell is very sensitive to relative humidity (RH), galactose substitution and orientation of the films. The probable space group symmetry of the unit cell is P2(1)2(1)2. Rheological studies of the galactomannan have shown that the transition from semi-dilute to dilute regime occurs at a critical concentration Cc* = 2.75. The slope of the log-log plot of specific viscosity versus C at zero shear rate is 5.87 in the more concentrated regime. The viscoelastic and critical shear rate behavior indicate the characteristics of a coil polymer. The large dependence of the viscosity on the coil overlap parameter is probably due to polymer-polymer interactions and peculiarity of the galactose distribution along the chain. Above 20 g/L concentration, the rheological behavior of the gum is like the one of a weak-gel.
Collapse
Affiliation(s)
- V P Kapoor
- National Botanical Research Institute (CSIR), Lucknow, India
| | | | | | | | | | | |
Collapse
|