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Food physical chemistry : ウィキペディア英語版
Food physical chemistry
Food physical chemistry is considered to be a branch of Food chemistry〔John M. de Man.1999. ''Principles of Food Chemistry'' (Food Science Text Series), Springer Science, Third Edition〕〔John M. de Man. 2009. Food process engineering and technology, Academic Press, Elsevier: London and New York, 1st edn.〕 concerned with the study of both physical and chemical interactions in foods in terms of physical and chemical principles applied to food systems, as well as the applications of physical/chemical techniques and instrumentation for the study of foods.〔Pieter Walstra. 2003. ''Physical Chemistry Of Foods''. Marcel Dekker, Inc.: New York, 873 pages〕〔''Physical Chemistry Of Food Processes: Fundamental Aspects''.1992.van Nostrand-Reinhold vol.1., 1st Edition,〕〔Henry G. Schwartzberg, Richard W. Hartel. 1992. ''Physical Chemistry of Foods''. IFT Basic Symposium Series, Marcel Dekker, Inc.:New York, 793 pages〕〔''Physical Chemistry of Food Processes, Advanced Techniques, Structures and Applications''.1994. van Nostrand-Reinhold vols.1-2., 1st Edition, 998 pages; 3rd edn. Minuteman Press, 2010; vols. 2-3, fifth edition (''in press'')〕 This field encompasses the'' "physiochemical principles of the reactions and conversions that occur during the manufacture, handling, and storage of foods"''〔Pieter Walstra. 2003. ''Physical Chemistry Of Foods''. Marcel Dekker, Inc.: New York, 873 pages〕
Food physical chemistry concepts are often drawn from rheology, theories of transport phenomena, physical and chemical thermodynamics, chemical bonds and interaction forces, quantum mechanics and reaction kinetics, biopolymer science, colloidal interactions, nucleation, glass transitions and freezing,〔Pieter Walstra. 2003. ''Physical Chemistry Of Foods''. Marcel Dekker, Inc.: New York, 873 pages〕〔''Physical Chemistry Of Food Processes: Fundamental Aspects''.1992.van Nostrand-Reinhold vol.1., 1st Edition,〕 disordered/noncrystalline solids.
Techniques utilized range widely from dynamic rheometry, optical microscopy, electron microscopy, AFM, light scattering, X-ray diffraction/neutron diffraction,〔''Physical Chemistry of Food Processes, Advanced Techniques, Structures and Applications''.1994. van Nostrand-Reinhold vols.1-2., 1st Edition, 998 pages; 3rd edn. Minuteman Press, 2010; vols. 2-3, fifth edition (''in press'')〕 to MRI, spectroscopy (NMR,〔http://www.nobelprize.org/nobel_prizes/physics/laureates/1952/ First Nobel Prize for NMR in Physics, in 1952〕 FT-NIR/IR, NIRS, ESR and EPR,〔http://www.ismrm.org/12/aboutzavoisky.htm ESR discovery in 1941〕〔Abragam, A.; Bleaney, B. ''Electron paramagnetic resonance of transition ions''. Clarendon Press:Oxford, 1970, 1,116 pages.〕 CD/VCD,〔''Physical Chemistry of Food Processes, Advanced Techniques, Structures and Applications''.1994. van Nostrand-Reinhold vols.1-2., 1st Edition, 998 pages; 3rd edn. Minuteman Press, 2010; vols. 2-3, fifth edition (''in press'')〕 Fluorescence, FCS,〔Magde, D., Elson, E. L., Webb, W. W. Thermodynamic fluctuations in a reacting system: Measurement by fluorescence correlation spectroscopy,(1972) ''Phys Rev Lett'', 29, 705–708.〕〔Ehrenberg, M., Rigler, R. Rotational brownian motion and fluorescence intensity fluctuations,(1974) ''Chem Phys'', 4, 390–401.〕〔Elson, E. L., Magde, D. Fluorescence correlation spectroscopy I. Conceptual basis and theory,(1974) ''Biopolymers'', 13, 1–27.〕〔Magde, D., Elson, E. L., Webb, W. W. Fluorescence correlation spectroscopy II. An experimental realization,(1974) ''Biopolymers'', 13, 29–61.〕〔Thompson N L 1991 Topics in Fluorescence Spectroscopy Techniques vol 1, ed J R Lakowicz (New York: Plenum) pp 337–78〕 HPLC, GC-MS, and other related analytical techniques.
Understanding food processes and the properties of foods requires a knowledge of physical chemistry and how it applies to specific foods and food processes. Food physical chemistry is essential for improving the quality of foods, their stability and food product development. Because food science is a multi-disciplinary field, food physical chemistry is being developed through interactions with other areas of food chemistry and food science, such as: food analytical chemistry, food process engineering/food processing, food and bioprocess technology, food extrusion, food quality control, food packaging, food biotechnology and food microbiology.
==Topics in Food physical chemistry==
The following are examples of topics in food physical chemistry that are of interest to both food industry and food science:
* Water in foods
*
* Local structure in liquid water
*
* Micro-crystallization in ice cream emulsions
* Dispersion and surface-adsorption processes in foods
* Water and protein activities
* Food hydration and shelf-life
* Hydrophobic interactions in foods
* Hydrogen bonding and ionic interactions in foods
* Disulfide bond breaking and formation in foods
* Food dispersions
* Structure-functionality in foods
* Food micro- and nano- structure
* Food gels and gelling mechanisms
* Cross-linking in foods
* Starch gelatinization and retrogradation
* Physico-chemical modification of carbohydrates
* Physico-chemical interactions in food formulations
* Freezing effects on foods and freeze concentration of liquids
* Glass transition in wheat gluten and wheat doughs
* Drying of foods and crops
* Rheology of wheat doughs, cheese and meat
* Rheology of extrusion processes
* Food enzyme kinetics
* Immobilized enzymes and cells
* Microencapsulation
* Carbohydrates structure and interactions with water and proteins
* Maillard browning reactions
* Lipids structures and interactions with water and food proteins
* Food proteins structure, hydration and functionality in foods
* Food protein denaturation
* Food enzymes and reaction mechanisms
* Vitamin interactions and preservation during food processing
* Interaction of salts and minerals with food proteins and water
* Color determinations and food grade coloring
* Flavors and sensorial perception of foods
* Properties of food additives

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