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Wang Y, Zheng Q, Li W, Ma Y, Zhao X, Zhang C. Measurement of free water in foods by secondary derivative thermogravimetry. CYTA - JOURNAL OF FOOD 2018. [DOI: 10.1080/19476337.2017.1416675] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Yubin Wang
- Beijing Vegetable Research Centre, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- Beijing Key Laboratory of Fruits and Vegetable Storage and Processing, Beijing, China
- Key Laboratory of Vegetable Postharvest Processing, Ministry of Agriculture, Beijing, China
| | - Qingyun Zheng
- Beijing Vegetable Research Centre, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- Beijing Key Laboratory of Fruits and Vegetable Storage and Processing, Beijing, China
- Key Laboratory of Vegetable Postharvest Processing, Ministry of Agriculture, Beijing, China
| | - Wu Li
- Beijing Vegetable Research Centre, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- Beijing Key Laboratory of Fruits and Vegetable Storage and Processing, Beijing, China
- Key Laboratory of Vegetable Postharvest Processing, Ministry of Agriculture, Beijing, China
| | - Yue Ma
- Beijing Vegetable Research Centre, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- Beijing Key Laboratory of Fruits and Vegetable Storage and Processing, Beijing, China
- Key Laboratory of Vegetable Postharvest Processing, Ministry of Agriculture, Beijing, China
| | - Xiaoyan Zhao
- Beijing Vegetable Research Centre, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- Beijing Key Laboratory of Fruits and Vegetable Storage and Processing, Beijing, China
- Key Laboratory of Vegetable Postharvest Processing, Ministry of Agriculture, Beijing, China
| | - Chao Zhang
- Beijing Vegetable Research Centre, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- Beijing Key Laboratory of Fruits and Vegetable Storage and Processing, Beijing, China
- Key Laboratory of Vegetable Postharvest Processing, Ministry of Agriculture, Beijing, China
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Vicente S, Nieto AB, Hodara K, Castro MA, Alzamora SM. Changes in Structure, Rheology, and Water Mobility of Apple Tissue Induced by Osmotic Dehydration with Glucose or Trehalose. FOOD BIOPROCESS TECH 2011. [DOI: 10.1007/s11947-011-0643-2] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Nakamura K, Sogami M, Era S, Matsushima S, Kinosada Y. Comparative 1H NMR studies of saturation transfer in copolymer gels and mouse lenses. NMR IN BIOMEDICINE 2010; 23:584-591. [PMID: 20232444 DOI: 10.1002/nbm.1499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Saturation transfer in cross-linked copolymer gels and excised intact and perforating trauma-induced cataract mouse lenses (4- or 8-week-old) were studied using intermolecular cross-relaxation rates (1/T(IS)(H(2)O); 1/T(IS)), monitored with f(2)-irradiation at -8.79, -4.00, and 7.13 ppm (gammaH(2)/2pi approximately 69 Hz). [1] The 1/T(IS)(7.13 ppm) vs dry weight [W (%)] profiles for hydrophilic copolymer gels were far steeper than those for hydrophobic copolymer gels, indicating the participation of an amount of bound water and a number of copolymer hydroxyl groups in the saturation transfer process. In contrast, the 1/T(IS)(-8.79 ppm) vs W (%) profiles exhibited little difference between the hydrophilic and hydrophobic copolymer gels, indicating the major participation of molecular rigidity, i.e. W (%) in the saturation transfer process. [2] The 1/T(IS)(7.13 ppm) values for cataractous mouse lenses were larger than those for intact lenses, indicating the formation of large, immobile lens protein associates or aggregates containing a sufficient amount of bound water for the saturation transfer. [3] The 1/T(IS)(7.13 ppm) vs W (%) profiles for the hydrophilic copolymer gels exhibited similar characteristics to the intact and cataractous mouse lenses with regard to the saturation transfer process.
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Affiliation(s)
- Koji Nakamura
- Department of Physiology and Biophysics, Gifu University Graduate School of Medicine, Gifu, Japan
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Deuticke B. Properties and structural basis of simple diffusion pathways in the erythrocyte membrane. Rev Physiol Biochem Pharmacol 2005; 78:1-97. [PMID: 322240 DOI: 10.1007/bfb0027721] [Citation(s) in RCA: 159] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Das S, Singhal GS. Role of interfacial structured water in membrane: osmotic properties of L-alpha-egg lecithin liposomes. J Membr Biol 1985; 86:221-7. [PMID: 4046010 DOI: 10.1007/bf01870601] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The role of large amounts of membrane-bound water in regulating various functions of the membrane is not clear at present. We have investigated the effect of perturbing the interfacial water structure on the osmotic shrinkage properties, such as water permeability and extent of shrinkage of egg lecithin liposomes. Water structure was perturbed by a series of reagents which have been earlier reported to affect phase transition of dipalmitoyl phosphatidylcholine liposomes by perturbing interfacial water structure. Anomalous variations of osmotic shrinkage properties with concentration of structure maker and breaker reagents have been interpreted to arise from concentration-dependent structural transitions of the ordered water at the membrane-aqueous interface. Various modes of interaction of these reagents on interfacial structured water have been suggested. Influence of molecular size and functional groups on the molecule in actions of some structure makers and breakers were also observed.
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Peemoeller H, Sharp A. N.m.r. study of cellulose-water systems: Water proton spin-lattice relaxation in the rotating reference frame. POLYMER 1985. [DOI: 10.1016/0032-3861(85)90128-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Escanye JM, Canet D, Robert J. Frequency dependence of water proton longitudinal nuclear magnetic relaxation times in mouse tissues at 20 degrees C. BIOCHIMICA ET BIOPHYSICA ACTA 1982; 721:305-11. [PMID: 7171630 DOI: 10.1016/0167-4889(82)90083-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
We have measured the proton longitudinal relaxation times of tissue water of healthy and tumor-bearing mice as a function of the Larmor frequency in the range 6.7 to 90 MHz. These data can be rationalized according to T1-1 = A v -1/2 +B, where A and B are constants specific to the tissue species. We present an interpretation of this frequency dependence within the Fast Exchange Two States model. It is shown that involving a distribution of correlation times for water proton-proton interaction does not yield consistent results, whereas a physically meaningful translational diffusion model pertinent to the dipolar interaction between water protons and macromolecules protons leads to the required frequency dependence. Essentially tissues would differ by the 'bound' versus 'free' proportion, or by structural properties of cells, rather than by the time-scales governing water motion.
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Koivula A, Suominen K, Timonen T, Kiviniitty K. The spin-lattice relaxation time in the blood of healthy subjects and patients with malignant blood disease. Phys Med Biol 1982; 27:937-47. [PMID: 7111398 DOI: 10.1088/0031-9155/27/7/005] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
To establish which constituents of blood influence the NMR relaxation time T1 of water protons in malignant blood diseases, 55 blood samples were studied (20 from healthy donors and 35 from patients with leukaemia, myelofibrosis and multiple myeloma). Relaxation time measurements were performed at 19.8 MHz resonance frequency and at a temperature of 33 +/- 1 degree C. There is a significant elevation of T1 over the normal level in whole blood, packed cells, and plasma of patients with blood disease. The relaxation rate R1 (= 1/T1) depends very strongly on the ratio of dry solids to water, which is in accordance with the three-state fast-exchange relaxation model.
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Gaggelli E, Niccolai N, Valensin G. 1H-NMR relaxation investigation of water bound to bovine rod outer segment disk membranes. Biophys J 1982; 37:559-61. [PMID: 7059654 PMCID: PMC1328837 DOI: 10.1016/s0006-3495(82)84701-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Spin-lattice relaxation times T(1) in deuterated aqueous dispersions of lecithin and rod outer segment disk membranes were measured at various concentrations and temperatures. Fast chemical exchange between two loosely defined phases of water molecules was shown to fit the data, allowing the dynamic features of "bound" water and the hydration of the biological membrane to be evaluated. The state of the water was shown to be also involved in vision physiology.
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Pope JM, Chandra S, Balfe JD. Changes in the state of water in senile cataractous lenses as studied by nuclear magnetic resonance. Exp Eye Res 1982; 34:57-63. [PMID: 7056311 DOI: 10.1016/0014-4835(82)90008-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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McGrath J, Fallahi A. THERMODYNAMIC MODELING AND COMPUTER SIMULATION OF FACTORS AFFECTING HEMOLYSIS KINETICS. Bioengineering (Basel) 1981. [DOI: 10.1016/b978-0-08-027207-8.50062-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Mathur-De Vré R. The NMR studies of water in biological systems. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 1980; 35:103-34. [PMID: 387052 DOI: 10.1016/0079-6107(80)90004-8] [Citation(s) in RCA: 146] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Schneider AS, Middaugh CR, Oldewurtel MD. Role of bound water in biological membrane structure: fluorescence and infrared studies. JOURNAL OF SUPRAMOLECULAR STRUCTURE 1979; 10:265-75. [PMID: 459513 DOI: 10.1002/jss.400100215] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Bound water is a major component of biological membranes and is required for the structural stability of the lipid bilayer. It has also been postulated that it is involved in water transport, membrane fusion, and mobility of membrane proteins and lipids. We have measured the fluorescence emission of membrane-bound 1-anilino-8-naphthalenesulfonate (ANS) and the infrared spectra of membranes, both as a function of hydration. ANS fluorescence is sensitive to polarity and fluidity of the membrane-aqueous interface, while infrared absorption is sensitive to the hydrogen bonding and vibrational motion of water and membrane proteins and lipids. The fluorescence results provide evidence of increasing rigidity and/or decreasing polarity of the membrane-aqueous interface with removal of water. The membrane infrared spectra show prominent hydration-dependent changes in a number of bands with possible assignments to cholesterol (vinyl CH bend, OH stretch), protein (amide A, II, V), and bound water (OH stretch). Further characterization of the bound water should allow its incorporation into current models of membrane structure and give insight into the role of membrane hydration in cell surface function.
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Berger S. Nuclear Magnetic Relaxation: Recent Problems and Progress. ADVANCES IN PHYSICAL ORGANIC CHEMISTRY 1978. [DOI: 10.1016/s0065-3160(08)60089-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Pieri C, Nagy IZ, Nagy VZ, Giuli C, Bertoni-Freddari C. Energy dispersive x-ray microanalysis of the electrolytes in biological bulk specimen. II. Age-dependent alterations in the monovalent ion contents of cell nucleus and cytoplasm in rat liver and brain cells. JOURNAL OF ULTRASTRUCTURE RESEARCH 1977; 59:320-31. [PMID: 864827 DOI: 10.1016/s0022-5320(77)90042-9] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Zipp A, Kuntz ID, James TL. Hemoglobin-water interactions in normal and sickle erythrocytes by proton magnetic resonance T1p measurements. Arch Biochem Biophys 1977; 178:435-41. [PMID: 836043 DOI: 10.1016/0003-9861(77)90213-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Abstract
The implications of a double polar-nonpolar-polar leaflet construction of the plasma membrane are investigated. Experimental data from transmission electron microscopic and enzymologic characterization of plasma membranes are advantageously interpreted in these terms compared to interpretation in terms of lipid bilayer. X-ray diffraction and electron spin resonance studies do not differentiate between the present and previous models for the structure of plasma membranes but electron spin resonance data that fail to indicate a statistical distribution of spin labels also fail to support the fluid mosaic model for cell membranes. Results from experiments involving vectorial digestion and labelling of plasma membranes as well as freeze fracture electron microscopic data are compatible with the present model. The molecular composition of the human erythrocyte membrane is investigated whereby the band III protein and glycophorin are suggested to be the structural proteins of the outer leaflet and the spectrins those of the inner leaflet.
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Affiliation(s)
- E Cervén
- Institute of Medical and Physiological Chemistry, Biomedical Center, University of Uppsala, Uppsala, Sweden
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Zipp A, Kuntz ID, James TL. An investigation of “bound” water in frozen erythrocytes by proton magnetic resonance spin-lattice, spin-spin, and rotating frame spin-lattice relaxation time measurements. ACTA ACUST UNITED AC 1976. [DOI: 10.1016/0022-2364(76)90120-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mollay C. Effect of melitin and melittin fragments on the thermotropic phase transition of dipalmitoyllecithin and on the amount of lipid-bound water. FEBS Lett 1976; 64:65-8. [PMID: 1269764 DOI: 10.1016/0014-5793(76)80250-5] [Citation(s) in RCA: 45] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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