PL EN


Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
Tytuł artykułu

Study on biological activity of chitosan after radiation processing

Treść / Zawartość
Identyfikatory
Warianty tytułu
Konferencja
International Conference on Recent Developments and Applications of Nuclear Technologies (15-17.09 2008 ; Białowieża, Poland)
Języki publikacji
EN
Abstrakty
EN
In recent years there is a trend in industry to limit the usage of chemical compounds. Natural polymers are new promising materials that possess important properties like biodegrability or lack of toxicity. Radiation processing of natural occurring polymers is an area of current research for development of new applications. The aim of this study was to determine the impact of ionizing radiation modification on bioactivity of a natural polysaccharide. Chitosan with different molecular weights was investigated as a biostimulator – a biologically active substance that stimulates some growth processes in plants. Chitosan in solid state was irradiated with electron beam from an electron beam accelerator Elektronika 10-10 with a dose range from 50 to 300 kGy. The effects of irradiation on the molecular weight of chitosan were investigated by viscosity and GPC measurements. Non-irradiated and irradiated chitosan at concentrations 0.001, 0.01, 0.1 and 1 g/dm3 were used for greenhouse tests of its activity for growth promotion of Salix viminalis L. var. gigantea plant. Uniform rooted cuttings (20 per combination) were selected for the test and cultivated in aerated hydroponics culture containing Hoagland’s nutrient solutions plus respective amounts of chitosan. After six weeks of plant exposure to chitosan, data of selected parameters of plant growth were collected. In most cases, except the highest concentration, both forms of chitosan had stimulatory effect on leaf area, length of roots and of newly developed shoots. Also fresh and dry weights of these organs were greater in chitosan treated plants. The highest concentration of chitosan was stimulatory only for a number of roots and newly developed shoots while for other parameters was inhibitory. In comparable concentrations the stimulatory effect was greater for chitosan irradiated in comparison with the non-irradiated one.
Słowa kluczowe
Czasopismo
Rocznik
Strony
73--76
Opis fizyczny
Bibliogr. 17 poz., rys.
Twórcy
autor
  • Experimental Plant for Food Irradiation, Institute of Nuclear Chemistry and Technology, 1a Fasolowa Str., 02-482 Warsaw, Poland, Tel.: +48 22 8638439, Fax: +48 22 8639935
  • Warsaw Uniwersity of Life Sciences, 159 Nowoursynowska Str., 02-787 Warsaw, Poland
autor
  • Experimental Plant for Food Irradiation, Institute of Nuclear Chemistry and Technology, 1a Fasolowa Str., 02-482 Warsaw, Poland, Tel.: +48 22 8638439, Fax: +48 22 8639935
  • Warsaw Uniwersity of Life Sciences, 159 Nowoursynowska Str., 02-787 Warsaw, Poland
  • Department of Nuclear Methods in Process Engineering, Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland
Bibliografia
  • 1.Arnon DI, Hoagland DR (1940) Crop production in artificial solutions and soils with special reference to factors influencing yield and absorption of inorganic nutrients. Soli Sci 50:463–471
  • 2. Bautista-Banos S, Hernandez-Lauzardo AN, Velazquez--del Valle MG et al. (2006) Chitosan as a potential natural compound to control pre and postharvest diseases of horticultural commodities. Crop Protection 25:108–118
  • 3. Ben-Shalom N, Ardi R, Pito R, Aki C, Fallik E (2003) Controlling gray mould caused by Botrytis cinerea in cucumber plants by means of chitosan. Crop Protection 22:285–290
  • 4. Chmielewski AG, Migdal W, Swietoslawski J, Swietoslawski J, Jakubaszek U, Tarnowski T (2007) Chemical--radiation degradation of natural oligoamino-polysaccharides for agricultural application. Radiat Phys Chem 76:1840–1842
  • 5. Choi WS, Ahn KJ, Lee DW, Byun MW, Park HJ (2002) Preparation of chitosan oligomers by irradiation. Polym Degrad Stab 78:533–538
  • 6. Feng T, Du Y, Li J, Hu Y, Kennedy JF (2008) Enhancement of antioxidant activity of chitosan by irradiation. Carbohydr Polym 73:126–132
  • 7. Gawrońska H, Przybysz A, Szalacha E, Słowiński A (2008) Physiological and molecular mode of action of Asahi SL biostimulator under optimal and stress conditions. In: Gawrońska H (ed) Biostimulators in modern agriculture. General aspects. Monographs series. Wies Jutra, Warszawa, pp 54–76
  • 8. Harish Prashanth KV, Tharanthan RN (2007) Chitin/ chitosan: modifications and their unlimited application potential – an overview. Trends Food Sci Technol 18:117–131
  • 9. Hien QN (2004) Radiation degradation of chitosan and some biological effects. IAEA-TECDOC-1422. IAEA, Vienna
  • 10. Hien QN, Nagasawa, N, Tham LX et al. (2000) Growth-promotion of plants with depolymerized alginates by irradiation. Radiat Phys Chem 59:97–101
  • 11. Kume T, Nagasawa N, Yoshii F (2002) Utilization of carbohydrates by radiation processing. Radiat Phys Chem 63;3/6:625–627
  • 12. Migdal W, Maciszewski W, Gryzlow A (1995) Application of “ELEKTRONIKA 10-10” electron linac for food irradiation. Radiat Phys Chem 46:749–752
  • 13. Nge KL, New N, Chandrkrachang S, Stevens WF (2006) Chitosan as a growth stimulator in orchid tissue culture. Plant Science 170:1185–1190
  • 14. Pospieszny H (1997) Antiviroid activity of chitosan. Crop Protection 16;2:105–106
  • 15. Shepherd R, Reader S, Falshaw A (1997) Chitosan functional properties. Glycoconj J 14:535–542
  • 16. Tham LX, Nagasawa N, Matsuhashi S, Ishioka NS, Ito T, Kume T (2001) Effect of radiation-degraded chitosan on plants stressed with vanadium. Radiat Phys Chem 61:171–175
  • 17. Zeng Z, Lian-Ying Z, Jiang-Feng Z (2003) Study on antimicrobial activity of chitosan with different molecular weights. Carbohydr Polym 54:527–530
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-d2e2234b-8328-4d1f-aee0-0ec0851485a4
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.