Identyfikatory
Warianty tytułu
Języki publikacji
Abstrakty
New application of positron annihilation lifetime spectroscopy (PALS) to development of food processing techniques is tested. Dehydrated leeks were an object of the study. Three experiments were performed consisting of evacuating air and volatile compounds from the sample, applying thermal treatment and rehydrating the sample. Distinct changes in positron lifetime spectra allowed the monitoring of alterations in the sample structure. The most likely origin of the particular components present in the spectra was able to be proposed from these data. Changes of the components were ascribed to the various processes occurring in the samples.
Czasopismo
Rocznik
Tom
Strony
73--78
Opis fizyczny
Bibliogr. 24 poz., rys.
Twórcy
autor
autor
autor
- Institute of Physics, Maria Curie-Skłodowska University, 1 M. Curie-Skłodowskiej Sq., 20-031 Lublin, Poland, Tel.: +48 81 537 6225, Fax: +48 81 537 6191, radek.zaleski@umcs.pl
Bibliografia
- 1. Banga JR, Paul Singh R (1994) Optimization of air drying of foods. J Food Eng 23;2:189–211
- 2. Brusa RS, Naia MD, Margoni D, Zecca A (1995) Positron mobility in polyethylene in the 60–400 K temperature range. Appl Phys A: Mater Sci Process 60;5:447–453
- 3. Cao H, Zhang R, Sundar CS et al. (1998) Degradation of polymer coating systems studied by positron annihilation spectroscopy. 1. UV irradiation effect. Macromolecules 31;19:6627–6635
- 4. Deng Q, Zandiehnadem F, Jean YC (2002) Free-volume distributions of an epoxy polymer probed by positron annihilation: temperature dependance. Macromolecules 25;3:1090–1095
- 5. Dlubek G, Eichler S, Hübner C, Nagel C (1999) Does the MELT program accurately reveal the lifetime distribution in polymers? Phys Status Solidi A 174;2:313–325
- 6. Dlubek G, Hübner C, Eichler S (1998) Do the CONTIN or the MELT programs accurately reveal the o-Ps lifetime distribution in polymers? Analysis of experimental lifetime spectra of amorphous polymers. Nucl Instrum Methods Phys Res B 142;1/2:191–202
- 7. Doymaz I (2008) Influence of blanching and slice thickness on drying characteristics of leek slices. Chem Eng Process 47;1:41–47
- 8. FAO, The Food and Agriculture Organization of the United Nations Statistical Database. http://faostat.fao.org.Accessed: 20 August 2009
- 9. Ferrell RA (1957) Long lifetime of positronium in liquid helium. Phys Rev 108;2:167–168
- 10. Golonka P, Dryzek J, Kluza M (2002) Bean cotyledons microporosity under hydration conditions. Nukleonika 47;4:137–140
- 11. Habrdova K, Hovorka S, Bartovska L (2004) Concentration dependence of surface tension for very dilute aqueous solutions of organic non-electrolytes. J Chem Eng Data 49;4:1003–1007
- 12. Kansy J (1996) Microcomputer program for analysis of positron annihilation lifetime spectra. Nucl Instrum Methods Phys Res A 374;2:235–244
- 13. Kleitz F, Schmidt W, Schüth F (2001) Evolution of mesoporous materials during the calcination process: structural and chemical behavior. Microporous Mesoporous Mater 44/45:95–109
- 14. Levay B, Vertes A (2002) Bubble formation around positronium atoms in high surface-tension aqueous solutions of inorganic materials. J Phys Chem 80;1:37–40
- 15. Mondy N, Duplat D, Christides JP, Arnault I, Auger J (2002) Aroma analysis of fresh and preserved onions and leek by dual solid-phase microextraction-liquid extraction and gas chromatography-mass spectrometry. J Chromatogr A 963;1/2:89–93
- 16. Roudaut G, Duplâtre G (2009) Positronium as a probe in natural polymers: decomposition in starch. Phys Chem Chem Phys 11;41:9556–9561
- 17. Shukla A, Peter M, Hoffmann L (1993) Analysis of positron lifetime spectra using quantified maximum entropy and a general linear filter. Nucl Instrum Methods Phys Res A 335;1/2:310–317
- 18. Stepanov SV, Byakov VM, Hirade T (2007) To the theory f Ps formation. New interpretation of the e+ lifetime spectrum in water. Radiat Phys Chem 76;2:90–95
- 19. Stępień B (2008) Rehydration of carrot dried using various methods. Acta Agrophys 11;1:239–251
- 20. Tao SJ (1972) Positronium annihilation in molecular substances. J Chem Phys 56;11:5499–5510
- 21. Teyssier C, Amiot MJ, Mondy N, Auger J, Kahane R, Siess MH (2001) Effect of onion consumption by rats on hepatic drug-metabolizing enzymes. Food Chem Toxicol 39;10:981–987
- 22. Tuckermann R (2007) Surface tension of aqueous solutions of water-soluble organic and inorganic compounds. Atmos Environ 41;29:6265–6275
- 23. Zaleski R, Wawryszczuk J (2008) Positron porosimetry studies of template removal from as-synthesized MCM-41 silica. Acta Phys Pol A 113;5:1543–1550
- 24. Zhang ZM, Wu WW, Li GK (2006) HSSPME-GC/MS study of the aroma volatiles of Allium species and chemometric interpretation for the aroma characteristics. J Plant Sci 1;4:315–323
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BUJ7-0014-0015