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Hermund DB, Anagnostara I, Hou X, Mikkelsen MD, Rhein‐Knudsen N, Bjerre A, Meyer AS, Jacobsen C. Physical and oxidative stability of n‐3 delivery emulsions added seaweed‐based polysaccharide extracts from Nordic brown algae
Saccharina latissima. J AM OIL CHEM SOC 2022. [DOI: 10.1002/aocs.12566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ditte B. Hermund
- National Food Institute, Department of Food Technology Technical University of Denmark Kgs. Lyngby Denmark
| | - Ioanna Anagnostara
- National Food Institute, Department of Food Technology Technical University of Denmark Kgs. Lyngby Denmark
| | - Xiaoru Hou
- Danish Technological Institute Taastrup Denmark
| | - Maria Dalgaard Mikkelsen
- DTU Bioengineering, Department of Biotechnology and Biomedicine Technical University of Denmark Kgs. Lyngby Denmark
| | - Nanna Rhein‐Knudsen
- DTU Bioengineering, Department of Biotechnology and Biomedicine Technical University of Denmark Kgs. Lyngby Denmark
| | | | - Anne S. Meyer
- DTU Bioengineering, Department of Biotechnology and Biomedicine Technical University of Denmark Kgs. Lyngby Denmark
| | - Charlotte Jacobsen
- National Food Institute, Department of Food Technology Technical University of Denmark Kgs. Lyngby Denmark
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2
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Xu E, Ma S, Wu Z, Wang W, Zhang X, Tian J, Li D, Zhou J, Liu D. Bifunctional Fe 3O 4 nanoparticles as magnet and inducer in bioextruded fabrication of starch-based composite with hierarchical pore architecture. Int J Biol Macromol 2021; 190:876-886. [PMID: 34534582 DOI: 10.1016/j.ijbiomac.2021.09.050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 08/27/2021] [Accepted: 09/09/2021] [Indexed: 10/20/2022]
Abstract
Starch (St) was used as green and renewable matrix (> 80%, db) for the preparation of Zn-St-MOCP/nFe3O4 composite via bioextrusion. Bifunction of Fe3O4 NPs as magnet and pore-inducer was confirmed and could be more homogeneously embedded in the St-based framework with hierarchical porous structure via SEM-EDS mapping. For the nFe3O4-induced microstructure of Zn-St-MOCP/nFe3O4 composite, submicronic pores and nanopores were observed with Fe3O4 NPs onto the inner surface of micron channels. According to the XPS, XRD, FTIR, TGA analyses, it is probably due to the coordination between Fe3+/2+ and Zn2+/hydroxy groups and the recombination of St chains in crystalline/amorphous zones interfered by Fe3O4 NPs. Saturation magnetization value was measured with an excellent separation behavior. Seven kinetic equations were conducted for the fitting of dye adsorption data. Overall, the nFe3O4-assisted bioextrusion strategy is developed for the continuous fabrication of bio-based materials with rapid magnetic separation and hierarchical-pore architecture promising in practical adsorption.
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Affiliation(s)
- Enbo Xu
- College of Biosystems Engineering and Food Science, State Key Laboratory of Fluid Power and Mechatronic Systems, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China; Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
| | - Shuohan Ma
- College of Biosystems Engineering and Food Science, State Key Laboratory of Fluid Power and Mechatronic Systems, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China; Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
| | - Zhengzong Wu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Wenjun Wang
- College of Biosystems Engineering and Food Science, State Key Laboratory of Fluid Power and Mechatronic Systems, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China; Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
| | - Ximing Zhang
- College of Biosystems Engineering and Food Science, State Key Laboratory of Fluid Power and Mechatronic Systems, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China; Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
| | - Jinhu Tian
- College of Biosystems Engineering and Food Science, State Key Laboratory of Fluid Power and Mechatronic Systems, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China; Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
| | - Dandan Li
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Jianwei Zhou
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, China; School of Mechanical and Energy Engineering, NingboTech University, Ningbo 315100, China.
| | - Donghong Liu
- College of Biosystems Engineering and Food Science, State Key Laboratory of Fluid Power and Mechatronic Systems, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China; Ningbo Research Institute, Zhejiang University, Ningbo 315100, China.
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Xu E, Wu Z, Ding T, Ye X, Jin Z, Liu D. Magnetic (Zn-St) 10Fe 0n ( n = 1, 2, 3, 4) Framework of Macro-Mesoporous Biomaterial Prepared via Green Enzymatic Reactive Extrusion for Dye Pollutants Removal. ACS APPLIED MATERIALS & INTERFACES 2019; 11:43553-43562. [PMID: 31644868 DOI: 10.1021/acsami.9b14750] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Biobased materials have the potential to be developed into green multifunctional products to replace their chemosynthetic counterparts, which have environmental and economic concerns. However, designing magnetic and porous biomaterials without pore spaces being occupied by exogenous magnets via traditional encapsulation, load, and/or deposition methods remains challenging. This paper describes a novel, facile, top-down strategy of fabricating zerovalent iron particles (Fe0 Ps) embedded into a three-dimensional (3D) zinc-modified starch (Zn-St) framework using the enzymatic reactive extrusion (eREX) method. Raw St underwent Zn-atom fortification, in situ Fe-atom deposition, and micromixing extrusion to produce (Zn-St)10Fe0n (n = 1, 2, 3, 4) extrudates (Es) in a continuous and large-scale mode. A hierarchical porous structure was formed during eREX processing, with mesopores (∼2-4 nm) and macropores (∼50-300 nm and ∼5-100 μm) generated regularly. The (Zn-St)10Fe0n Es were excellent at dye adsorption and magnetic separation, with high levels of St (>70%) as a biodegradable resource. For instance, (Zn-St)10Fe02 Es (St > 83%) removed 61.03 mg/g of methylene blue (∼19 times higher than that of raw St) at 298 K and pH 4.0 via simultaneous physisorption and degradation and were successfully separated due to their saturation magnetization (Ms) value of 25.41 emu/g. The dye adsorption rate and Ms of the (Zn-St)10Fe0n Es can be increased by manipulating the amount of Fe0 Ps. Thus, the novel 3D (Zn-St)10Fe0n Es are promising biomaterials for water purification applications, as well as other food, biological, and environmental fields.
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Affiliation(s)
- Enbo Xu
- College of Biosystems Engineering and Food Science , Zhejiang University , Hangzhou 310058 , China
| | - Zhengzong Wu
- State Key Laboratory of Biobased Material and Green Papermaking , Qilu University of Technology, Shandong Academy of Sciences , Jinan 250353 , China
| | - Tian Ding
- College of Biosystems Engineering and Food Science , Zhejiang University , Hangzhou 310058 , China
- Ningbo Research Institute , Zhejiang University , Ningbo 315100 , China
- National Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science , Zhejiang University , Hangzhou 310058 , China
| | - Xingqian Ye
- College of Biosystems Engineering and Food Science , Zhejiang University , Hangzhou 310058 , China
- Ningbo Research Institute , Zhejiang University , Ningbo 315100 , China
- National Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science , Zhejiang University , Hangzhou 310058 , China
| | - Zhengyu Jin
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Joint International Research Laboratory on Food Safety , Jiangnan University , Wuxi 214122 , China
| | - Donghong Liu
- College of Biosystems Engineering and Food Science , Zhejiang University , Hangzhou 310058 , China
- Ningbo Research Institute , Zhejiang University , Ningbo 315100 , China
- National Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science , Zhejiang University , Hangzhou 310058 , China
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4
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Vukosav P, Mlakar M, Selmani A, BregoviĿ N, GašparoviĿ B. Electroanalytical characterization of Zn (II) complexes with D-mannosamine and Glycine in aqueous solutions. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2015.12.054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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5
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Salvia-Trujillo L, Decker EA, McClements DJ. Influence of an anionic polysaccharide on the physical and oxidative stability of omega-3 nanoemulsions: Antioxidant effects of alginate. Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2015.07.035] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Luo Z, Cheng W, Chen H, Fu X, Peng X, Luo F, Nie L. Preparation and properties of enzyme-modified cassava starch-zinc complexes. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:4631-4638. [PMID: 23607452 DOI: 10.1021/jf4016015] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Starch-zinc complexes were synthesized by reaction of enzyme-modified starch with zinc acetate. The effect of reaction parameters such as hydrolysis rate, reaction temperature, reaction time, pH value, and concentration of zinc acetate on the zinc content and zinc conversion rate was studied. The zinc content and conversion rate of the product prepared under optimal conditions were 100.24 mg/g and 87.06%, respectively. The results of scanning electron microscopy (SEM) demonstrated that the obtained starch-zinc complexes displayed a porous appearance. The results of Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and (13)C cross-polarization/magic-angle spinning nuclear magnetic resonance ((13)C CP/MAS NMR) showed that zinc was mainly coordinated to the oxygen atoms of the glucose unit 6-CH2OH. The formation of starch-zinc complexes was also indirectly confirmed by the results of conductivity measurements. Thermal properties of the complexes were influenced by the zincatation process. This study revealed that nonallergenic starch might be used effectively as a carrier of zinc for zinc supplementation purpose.
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Affiliation(s)
- Zhigang Luo
- Carbohydrate Lab, College of Light Industry & Food Sciences, South China University of Technology, Guangzhou 510640, China.
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Kopitzki S, Thiem J. Short Synthetic Route to Benzaldehyde-Functionalized Idose and Talose Derivatives by Acetoxonium Ion Rearrangements. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201648] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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8
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Merli D, Profumo A, Dossi C. An analytical method for Fe(II) and Fe(III) determination in pharmaceutical grade iron sucrose complex and sodium ferric gluconate complex. J Pharm Anal 2012; 2:450-453. [PMID: 29403781 PMCID: PMC5760929 DOI: 10.1016/j.jpha.2012.05.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Accepted: 05/18/2012] [Indexed: 11/30/2022] Open
Abstract
A robust voltammetric method has been developed and validated for the determination of Fe(II) and Fe(III) in pharmaceutical iron polysaccharidic complexes. Undesirable low molecular weight iron complexes, at concentration about 3% in the pharmaceutical formulation, can be easily determined with good accuracy and precision. This methodology can be proposed as a viable, environmentally sustainable substitute for the conventional Normal Pulse Polarographic method in US Pharmacopeia, with better analytical figures of merit, and reduced Hg consumption. A deeper insight in Fe(II) and Fe(III) composition can be gained by the combined use of a new potentiometric technique after chemical decomposition of the complex.
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Affiliation(s)
- Daniele Merli
- Dipartimento di Chimica, Università degli Studi di Pavia, Via Taramelli 12/14/16, 27100 Pavia Italy
| | - Antonella Profumo
- Dipartimento di Chimica, Università degli Studi di Pavia, Via Taramelli 12/14/16, 27100 Pavia Italy
- Corresponding author. Tel.: +39 0382 987581; fax: +39 0382 528544.
| | - Carlo Dossi
- Dipartimento di Scienze Teoriche ed Applicate (DSTA), Università dell'Insubria, Via Dunant, 7, 21100 Varese Italy
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Pokrovsky OS, Pokrovski GS, Shirokova LS, Gonzalez AG, Emnova EE, Feurtet-Mazel A. Chemical and structural status of copper associated with oxygenic and anoxygenic phototrophs and heterotrophs: possible evolutionary consequences. GEOBIOLOGY 2012; 10:130-149. [PMID: 22039921 DOI: 10.1111/j.1472-4669.2011.00303.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Copper adsorption on the surface and intracellular uptake inside the cells of four representative taxons of soil and aquatic micro-organisms: aerobic rhizospheric heterotrophs (Pseudomonas aureofaciens), anoxygenic (Rhodovulum steppense) and oxygenic (cyanobacteria Gloeocapsa sp. and freshwater diatoms Navicula minima) phototrophs were studied in a wide range of pH, copper concentration, and time of exposure. Chemical status of adsorbed and assimilated Cu was investigated using in situ X-ray absorption spectroscopy. In case of adsorbed copper, XANES spectra demonstrated significant fractions of Cu(I) likely in the form of tri-coordinate complexes with O/N and/or S ligands. Upon short-term reversible adsorption at all four studied micro-organisms' cell surface, Cu(II) is coordinated by 4.0 ± 0.5 planar oxygens at an average distance of 1.97 ± 0.02 Å, which is tentatively assigned to the carboxylate groups. The atomic environment of copper incorporated into diatoms and cyanobacteria during long-term growth is similar to that of the adsorbed metal with slightly shorter distances to the first O/N neighbor (1.95 Å). In contrast to the common view of Cu status in phototrophic micro-organisms, XAFS failed to detect sulfur in the nearest atomic environment of Cu assimilated by freshwater plankton (cyanobacteria) and periphyton (diatoms). The appearance of S in Cu 1st coordination shell at 2.27-2.32 Å was revealed only after long-term interaction of Cu with anoxygenic phototrophs (and Cu uptake by soil heterotrophs), suggesting Cu scavenging in the form of sulfhydryl, histidine/carboxyl or a mixture of carboxylate and sulfhydryl complexes. These new structural constraints suggest that adsorbed Cu(II) is partially reduced to Cu(I) already at the cell surface, where as intracellular Cu uptake and storage occur in the form of both Cu(I)-S linked proteins and Cu(II) carboxylates. Obtained results allow to better understand how, in the course of biological evolution, micro-organisms elaborated various mechanisms of Cu uptake and storage, from passive adsorption and uptake to active, protein-controlled surface reduction, and intracellular storage.
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Affiliation(s)
- O S Pokrovsky
- Géosciences Environnement Toulouse (GET), Université de Toulouse, Toulouse, France.
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10
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Gianguzza A, Giuffrè O, Piazzese D, Sammartano S. Aqueous solution chemistry of alkyltin(IV) compounds for speciation studies in biological fluids and natural waters. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2011.06.027] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Phadungath C, Metzger L. Effect of sodium gluconate on the solubility of calcium lactate. J Dairy Sci 2011; 94:4843-9. [DOI: 10.3168/jds.2011-4549] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2011] [Accepted: 07/05/2011] [Indexed: 11/19/2022]
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12
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Hosseini SS, Bhadbhade M, Clarke RJ, Rutledge PJ, Rendina LM. Synthesis, carbohydrate- and DNA-binding studies of cationic 2,2′:6′,2′′-terpyridineplatinum(ii) complexes containing N- and S-donor boronic acid ligands. Dalton Trans 2011; 40:506-13. [DOI: 10.1039/c0dt00892c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Yang Y, Shah RB, Faustino PJ, Raw A, Yu LX, Khan MA. Thermodynamic stability assessment of a colloidal iron drug product: sodium ferric gluconate. J Pharm Sci 2010; 99:142-53. [PMID: 19492341 DOI: 10.1002/jps.21806] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A high performance gel permeation chromatography (HP-GPC) method was developed, validated and used to determine the molecular weight (MW) of sodium ferric gluconate following various stress conditions. The intra-day accuracy (90-103%), intra-day precision (1.5-2.7%), inter-day accuracy (91-105%), inter-day precision (1.3-3.2%) were within acceptable range stated in FDA guidance. The MW of sodium ferric gluconate remained unchanged after: (1) autoclaving (121 degrees C), (2) moderate thermal stress (30 days at 50 degrees C or 7 days at 70 and 90 degrees C), (3) excipient dilution, (4) basic buffer dilution (pH of 8 and 9), (5) ultracentrifugation, (6) dialysis, and (7) electrolyte dilution. However sodium ferric gluconate showed signs of instability at higher temperatures (>90 degrees C) after 30 days and at pH of 10-11. Sodium ferric gluconate was found to be a lypophilic colloidal solution with an average particle size of 10 nm and a zeta potential of -13 mV. The colloid osmotic pressure was 3.5 mmHg and remained unchanged after moderate thermal stress. Additionally, in-house drug products with similar MW to sodium ferric gluconate were produced by three different synthetic procedures, suggesting that this colloidal iron drug product might be thermodynamically stable.
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Affiliation(s)
- Yongsheng Yang
- Division of Product Quality Research, Food and Drug Administration, Center for Drug Evaluation and Research, 10903 New Hampshire Avenue, Silver Spring, Maryland 20993
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Abstract
AbstractBioactive copper complexes with pullulan or dextran oligosaccharides are the subject of intensive research mainly because of their possible application in veterinary and human medicine. The thermal stability and stability under oxidative conditions of the Cu(II) complexes with reduced low-molar pullulan or dextran were investigated in this paper, using a conductometric method. The influence of ligand constitutions on the stability of the complexes was examined on the basis of ligand property. Forced degradation studies were performed on bulk sample of complexes by using heat (25, 40 and 60°C) and an oxidation agent (0.1, 0.5, 1.0 and 10.0% v/v hydrogen peroxide). It can be concluded, according to the results obtained (by examining conductivity during the forced degradation studies), that Cu(II) complexes show a large pharmaceutical stability for both tests.
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Chen B, McClements DJ, Decker EA. Role of continuous phase anionic polysaccharides on the oxidative stability of menhaden oil-in-water emulsions. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:3779-3784. [PMID: 20158199 DOI: 10.1021/jf9037166] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The antioxidant role of selected polysaccharides was studied in the continuous phase of a Menhaden oil-in-water emulsion coated by polyoxyethylene(23) lauryl ether (Brij 35) at neutral pH. The addition of low-methoxyl (LM) and high-methoxyl (HM) pectin (0.02-0.1 wt %) reduced the formation of lipid hydroperoxides and thiobarbituric acid reactive substances with an inhibition that increased with increasing polysaccharide concentration in the continuous phase. alpha-Carrageenan and sodium alginate were less effective antioxidants than pectin and were prooxidative under certain conditions. None of the polysaccharides impacted the physical properties of the emulsions as determined by droplet particle size (d(43) approximately 0.32 microm) and creaming index. LM and HM pectins had higher iron-binding capacities as compared to alpha-carrageenan and sodium alginate, which may relate to their higher antioxidant activities. These results suggest that the addition of anionic polysaccharides to the continuous phase of oil-in-water emulsions could be used to increase the oxidative stability of oil-in-water emulsions and thus prolong shelf life.
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Affiliation(s)
- Bingcan Chen
- Department of Food Science, University of Massachusetts, Amherst, Massachusetts 01003, USA
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16
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FTIR spectroscopic characterization of Cu(II) coordination compounds with exopolysaccharide pullulan and its derivatives. J Mol Struct 2009. [DOI: 10.1016/j.molstruc.2009.01.019] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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17
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Bernal-Uruchurtu MI, Metta-Magaña AJ, Guerrero-Álvarez JA, Reyes-Martínez R, Tlahuext H. Theoretical study of the experimental coordination behavior of N-(2-aminophenyl)-D-glycero-D-gulo-heptonamide to Hg(II) ion. Carbohydr Res 2008; 343:2804-12. [PMID: 18774555 DOI: 10.1016/j.carres.2008.08.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2008] [Revised: 07/26/2008] [Accepted: 08/03/2008] [Indexed: 12/01/2022]
Abstract
The reactivity of N-(2-aminophenyl)-d-glycero-d-gulo-heptonamide (adgha), with the group 12 cations, Zn(II), Cd(II), and Hg(II), was studied in DMSO-d(6) solution. The studied system showed a selective coordination to Hg(II), and the products formed were characterized by (1)H and (13)C NMR in DMSO-d(6) solution and fast atom bombardment (FAB(+)) mass spectra. The expected coordination compounds, [Hg(adgha)](NO(3))(2) and [Hg(adgha)(2)](NO(3))(2), were observed as unstable intermediates that decompose to bis-[2-(d-glycero-d-gulo-hexahydroxyhexyl)-benzimidazole-κN]mercury(II) dinitrate, [Hg(ghbz)(2)](NO(3))(2). The chemical transformation of the complexes was followed by NMR experiments, and the nature of the species formed is sustained by a theoretical study done using DFT methodology. From this study, we propose the structure of the complexes formed in solution, the relative stability of the species formed, and the possible role of the solvent in the observed transformations.
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Affiliation(s)
- Margarita I Bernal-Uruchurtu
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Cuernavaca 62209, Mexico.
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Bowen ML, Orvig C. 99m-Technetium carbohydrate conjugates as potential agents in molecular imaging. Chem Commun (Camb) 2008:5077-91. [PMID: 18956031 DOI: 10.1039/b809365b] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
This feature article covers recent reports of work towards the development of (99m)Tc-carbohydrate based agents for use in SPECT imaging, particularly of cancerous tissue. An outline of some of the key biological functions and coordination chemistry of carbohydrates is given, along with an introduction to bioconjugation and molecular imaging. Technetium coordination chemistry and the subset of this involving bioconjugates are discussed before moving into the focus of the article: glycoconjugates of (99m)Tc(v) and the more recently developed [(99m)Tc(I)(CO)(3)](+). Significant work in the last decade has featured the very attractive [(99m)Tc(CO)(3)](+) core, and the ligand sets designed for this core are discussed in detail.
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Affiliation(s)
- Meryn L Bowen
- Medicinal Inorganic Chemistry Group, Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC, CanadaV6T 1Z1
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Nikolić GS, Cakić M, Mitić Ž, Ilić L. Deconvoluted Fourier-transform LNT-IR study of coordination copper(II) compounds with dextran derivatives. RUSS J COORD CHEM+ 2008. [DOI: 10.1134/s1070328408050023] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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20
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Synthesis and X-ray crystal structures of two transition metal complexes based on functionalised 1,5-anhydro-2-deoxy-d-galactitol and methyl 2-deoxy-α-d-galactopyranoside. Carbohydr Res 2008; 343:530-5. [DOI: 10.1016/j.carres.2007.11.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2007] [Revised: 11/04/2007] [Accepted: 11/15/2007] [Indexed: 11/23/2022]
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21
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Gray IJ, Kluger R. Chelation-controlled regioselectivity in the lanthanum-promoted monobenzoylation of monosaccharides in water. Carbohydr Res 2007; 342:1998-2002. [PMID: 17572400 DOI: 10.1016/j.carres.2007.05.024] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2007] [Revised: 05/16/2007] [Accepted: 05/19/2007] [Indexed: 11/30/2022]
Abstract
Monosaccharides are selectively converted to monobenzoates in a base-catalyzed reaction with benzoyl methyl phosphate (BzMP) and a lanthanum salt in water. Yields are reported in terms of formation of the ester, which competes with hydrolysis of BzMP, to give an estimate of the efficiency of the conversion of the sugar. Higher conversions can be achieved using excess reagent. Regioselectivity is influenced by the structure of the glycoside. For example, the reaction leads to different product distributions from alpha- and beta-anomers of the glycosides. The reaction combination provides a basis for efficient ester formation in specific geometric situations, providing a means of identification as well as modification.
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Affiliation(s)
- Ian James Gray
- Davenport Chemistry Laboratory, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
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Nagy L, Szorcsik A, Jankovics H, Yamaguchi T, Yoshida K, Scopelliti M, Pellerito L, Sletten E. Preparation and XAFS studies of organotin(IV) complexes with adenosine and related compounds and calf thymus DNA. J Radioanal Nucl Chem 2007. [DOI: 10.1007/s10967-007-6958-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Dabrowska A, Jacewicz D, Chylewska A, Wojtczak A, Chmurzyński L. Crystal structures of ethyl 3-azido-2,3-dideoxy-D-arabino-hexopyranoside anomers. Carbohydr Res 2007; 342:1450-5. [PMID: 17553474 DOI: 10.1016/j.carres.2007.05.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2006] [Revised: 04/27/2007] [Accepted: 05/02/2007] [Indexed: 11/20/2022]
Abstract
The structures of the title alpha (1) and beta (2) anomers of ethyl 3-azido-2,3-dideoxy-d-arabino-exopyranoside (C(8)H(15)N(3)O(4)) are reported. The single-crystal structures of C(8)H(15)N(3)O(4) were determined by X-ray crystallography at 293K. It has been found that both title compounds crystallize in the orthorhombic space group. In both cases, the unit cell contains four asymmetric molecules. From intensity measurements, it has been shown that each of these molecules adopts a (4)C(1) chair conformation. The packing arrangement in the unit cell displays a stratified structure. Moreover, medium strength O-H...O hydrogen bonds in both crystal lattices can be observed.
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Affiliation(s)
- Aleksandra Dabrowska
- Department of Chemistry, University of Gdańsk, 18/19 Sobieski St, PL-80 952 Gdańsk, Poland.
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Gu WX, Xia WS. A Novel Synthesis of 2-Amino-2-deoxy-D-gluconic Acid and Its Complexation with Cu(II) in Alkaline Medium. CHINESE J CHEM 2006. [DOI: 10.1002/cjoc.200690274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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25
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Buck-Koehntop BA, Porcelli F, Lewin JL, Cramer CJ, Veglia G. Biological chemistry of organotin compounds: Interactions and dealkylation by dithiols. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2005.12.047] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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26
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Cerchiaro G, Sant'Ana AC, Temperini MLA, da Costa Ferreira AM. Investigations of different carbohydrate anomers in copper(II) complexes with d-glucose, d-fructose, and d-galactose by Raman and EPR spectroscopy. Carbohydr Res 2005; 340:2352-9. [PMID: 16125686 DOI: 10.1016/j.carres.2005.08.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2005] [Accepted: 08/03/2005] [Indexed: 11/17/2022]
Abstract
With the aim of verifying different carbohydrate anomers coordinated to copper(II) ions, some copper(II) complexes with D-glucose (Glc), D-fructose (Fru), and D-galactose (Gal) were prepared and investigated by spectroscopic techniques. Their compositions were verified by elemental, ICP-AES and thermal analyses, in addition to conductivity measurements. The compounds isolated were consistent with the formula Na2[Cu2(carbohydrate)3].8H2O and Na[Cu2(carbohydrate)3].6H2O for the aldoses Glc and Gal, respectively, and Na2[Cu3(carbohydrate)4].8H2O in the case of the ketose, Fru. EPR spectra of these solids showed a rhombic environment around the metal center and suggested the presence of different anomers of the carbohydrates in each case. By Raman spectroscopy, it was possible to verify the predominance of the beta anomer of d-glucose in the corresponding copper complex, while in the free ligand the alpha anomer is predominant. In the case of the analogous complex with d-galactose, the spectrum of the complex shows bands of both anomers (alpha and beta) in approximately the same relative intensities as those observed in the isolated free ligand spectrum. On the other hand, for the complex with d-fructose a mixture of both furanose (five-membered ring) and pyranose (six-membered ring) structures was detected with prevalence of the furanose structure. Based on variations in the relative intensities of characteristic Raman bands, the binding site for copper in the fructose ligand was identified as most likely the 1-CH2OH and the anomeric 1-OH, while in beta-D-glucose it is presumably the anomeric 1-OH and the O-5 atom. These results indicated that EPR and Raman spectroscopy are suitable supporting techniques for the characterization of carbohydrate anomers coordinated to paramagnetic ions.
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Affiliation(s)
- Giselle Cerchiaro
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, PO Box 26077, São Paulo 05513-970, SP, Brazil
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Gaidamauskas E, Norkus E, Vaiciūniene J, Crans DC, Vuorinen T, Jaciauskiene J, Baltrūnas G. Evidence of two-step deprotonation of d-mannitol in aqueous solution. Carbohydr Res 2005; 340:1553-6. [PMID: 15882852 DOI: 10.1016/j.carres.2005.03.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2004] [Revised: 03/24/2005] [Accepted: 03/24/2005] [Indexed: 11/29/2022]
Abstract
Deprotonation of D-mannitol was studied in aqueous basic solutions by means of potentiometry and (13)C NMR spectroscopy. Two-step dissociation in the pH range from 12 to 13.8 was shown, and successive dissociation constants K(a1) and K(a2) were determined. In a solution with ionic strength I = 1.0 M (NaOH + NaNO(3)) pK(a1) = 13.1 +/- 0.1 and pK(a2) = 13.8 +/- 0.2. With increasing ionic strength from 0.75 to 3.0 M, both pK(a1) and pK(a2) values decrease. Deprotonation-induced chemical shifts in pH-variable (13)C NMR spectra show that the OH-groups next to internal carbon atoms C-3 and C-4 dissociate to a greater extent compared to OH-groups next to external carbon atoms C-1 and C-6.
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28
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Diéguez M, Pàmies O, Ruiz A, Dı́az Y, Castillón S, Claver C. Carbohydrate derivative ligands in asymmetric catalysis. Coord Chem Rev 2004. [DOI: 10.1016/j.ccr.2004.04.009] [Citation(s) in RCA: 161] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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29
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Kudasheva DS, Lai J, Ulman A, Cowman MK. Structure of carbohydrate-bound polynuclear iron oxyhydroxide nanoparticles in parenteral formulations. J Inorg Biochem 2004; 98:1757-69. [PMID: 15522403 DOI: 10.1016/j.jinorgbio.2004.06.010] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2004] [Revised: 04/28/2004] [Accepted: 06/11/2004] [Indexed: 11/16/2022]
Abstract
Intravenous iron therapy is used to treat anemia associated with chronic kidney disease. The chemical structures of parenteral iron agents have not been characterized in detail, and correlations between structure, efficiency of iron delivery, and toxicity via catalysis of oxygen-derived free radical creation remain to be established. In this study, two formulations of parenteral iron have been characterized by absorption spectroscopy, X-ray diffraction analysis (XRD), transmission electron microscopy (TEM), atomic force microscopy (AFM), and elemental analysis. The samples studied were Venofer (Iron Sucrose Injection, USP) and Ferrlecit (Sodium Ferric Gluconate in Sucrose Injection). The 250-800-nm absorption spectra and the XRD patterns showed that both formulations contain a mineral core composed of iron oxyhydroxide in the beta-FeOOH mineral polymorph known as akaganeite. This was further confirmed for each formulation by imaging using TEM and AFM. The average core size for the nanoparticles, after dialysis to remove unbound or loosely bound carbohydrate, was approximately 3+/-2 nm for the iron-sucrose, and approximately 2+/-1 nm for the iron-gluconate. Each of the nanoparticles consists of a mineral core, surrounded by a layer of bound carbohydrate. The overall diameter of the average bead in the dialyzed preparations was approximately 7+/-4 nm for the iron-sucrose, and 3+/-1 nm for the iron-gluconate. Undialyzed preparations have particles with larger average sizes, depending on the extent of dilution of unbound and loosely bound carbohydrate. At a dilution corresponding to a final Fe concentration of 5 mg/mL, the average particle diameter in the iron-sucrose formulation was approximately 22+/-9 nm, whereas that of the iron-gluconate formulation was approximately 12+/-5 nm.
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Affiliation(s)
- Dina S Kudasheva
- Othmer Department of Chemical and Biological Sciences and Engineering, Polytechnic University, Six Metrotech Center, Brooklyn, NY 11201, USA
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Zhang W, Jiang T, Ren S, Zhang Z, Guan H, Yu J. Metal–N-saccharide chemistry: synthesis and structure determination of two Cu(II) complexes containing glycosylamines. Carbohydr Res 2004; 339:2139-43. [PMID: 15280058 DOI: 10.1016/j.carres.2004.05.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2004] [Accepted: 05/15/2004] [Indexed: 10/26/2022]
Abstract
Two new complexes [Cu(N,N',N"-(D-Glc)3-tren)Cl]Cl (1) and [Cu(N,N',N"-(maltose)-tren)]Cl2.H2O (2), have been synthesized and characterized by elementary analysis, and the IR and UV spectra suggest that complex 1 and complex 2 are arranged in trigonal bipyramidal configuration and square-pyramidal configuration, respectively. The crystal structure of complex 1 has been determined by X-ray diffraction as: a = 9.3476(8), b = 17.4236(13), c = 9.7836(8) angstroms, beta = 91.197 degrees, and V = 1593.1(2) Angstroms3, Z = 2, and R = 0.0325, which shows that three secondary amine groups (N-1, N-2, N-3) of the glycosylamine ligand forms the equatorial plane, and the tertiary amine (N-4) and one Cl- are located at the apical positions.
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Affiliation(s)
- Wei Zhang
- Marine Drug and Food Institute, Ocean University of China, Qingdao 266003, China
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