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Abstrakty
Positron Annihilation Spectroscopy (PAS), proton Nuclear Magnetic Relaxation (NMR) and hydration kinetics measurements were applied to study the free volume formation process in the initial stages of bean cotyledons imbibition. These methods allowed us to analyse the behaviour of bound water in the bean cotyledon molecular structure, and to observe free volume regions formed there. They also made it possible to describe their dimensions and concentration quantitatively. Good correlation was found between the increase of the free volume radius and the amount of water bound to the bean cotyledon solid matrix.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
137--140
Opis fizyczny
Bibliogr. 19 poz., rys.
Twórcy
autor
- Department of Nuclear Spectroscopy, The Henryk Niewodniczanski Institute of Nuclear Physics, 152 Radzikowskiego Str., 31-342 Kraków, Poland, Tel.: +48 12/ 66 28 370, Fax: +48 12/ 637 18 81
autor
- Department of Nuclear Spectroscopy, The Henryk Niewodniczanski Institute of Nuclear Physics, 152 Radzikowskiego Str., 31-342 Kraków, Poland, Tel.: +48 12/ 66 28 370, Fax: +48 12/ 637 18 81
autor
- Collegium Maius, Jagiellonian University, 15 Jagiellońska Str., 31-010 Kraków, Poland
Bibliografia
- 1. Agbo G, Hosfield G, Ubersax M, Klomparens K (1987) Seed microstructure and its relationship to water uptake in isogenic lines and a cultivar of dry beans. Food Microstructure 6:91−102
- 2. Blicharska B, Kluza M (1996) NMR relaxation in cellulose pulp. Coll Surf A 115:137−140
- 3. Brandt W, Spirn I (1966) Positron lifetime spectra in molecular substances. Phys Rev 142:231−237
- 4. Dryzek J (1999) Calculation of annihilation rate of o-Ps in pick-off process. Acta Phys Pol A 95:527−532
- 5. Egli DB (1990) Seed water relations and the regulation of the duration of seed growth in soybean. J Exp Bot 41;223:243−248
- 6. Fukishima E, Roeder SBW (1981) Experimental NMR. A nuts and bolts approach. A-Wesley Publishing Co., Readding
- 7. Golonka P, Mayer J, Dryzek E (2001) Positron annihilation in cotton cellulose. Acta Phys Pol A 99:363−367
- 8. Goworek T (1998) Positronium as a probe of small free spaces in condensed media. UMCS, Lublin
- 9. Harańczyk H, Gaździński S, Olech M (1998) Initial stages of lichen hydration observed by proton magnetic relaxation. New Phytol 138:191−202
- 10. Harańczyk H, Strzałka K, Jasiński G, Mosna-Bojarska K (1996) The initial stages of wheat (Triticum aestivum L.) seed imbibition as observed by proton nuclear magnetic relaxation. Coll Surf A 115:47−54
- 11. Hosfield GL, Uebersax MA (1980) Variability in physico-chemical properties and nutritional components of tropical and domestic dry bean germplasm. J Amer Soc Hort Sci 105:246−252
- 12. Mogensen O (1995) Positron annihilation in chemistry. Springer, Berlin 13. Moh CC (1971) Mutation breeding in seed coat colors of beans (Phaseolus vulgaris L.). Euphytica 20:119−125
- 14. Mostafa N, Mohsen M, Jean YC, Ismail HA (1997) Study of free--volume distributions in polyisoprene by means of positron annihilation lifetime spectroscopy. Materials Sci Forum 255-257:372−374
- 15. Peemoeller H (1989) Spin grouping. Bull Magn Reson 11:19−22
- 16. Sefa-Dedeh S, Stanley DW (1979) Textural implications of the microstructure of legumes. Food Technol 33:77−83
- 17. Siles S, Moya G, Ahmed A Si, Kansy J (2001) Positron annihilation study of collagen biopolymer. Materials Sci Forum 363-365:331−334
- 18. Swanson BG, Hughes JS, Rasmussen HP (1985) Seed microstructure: review of water imbibition in legumes. Food Microstructure 4:115−121
- 19. Tao S (1972) Positron annihilation in molecular substances. Chem Phys 56:5499−5510
- 20. Węglarz W, Harańczyk H (2000) Two-dimensional analysis of the nuclear relaxation function in the time domain: the program CracSpin. J Phys D Appl Phys 33;15:1909−1920
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BUJ6-0006-0048