Preparation of oligoalginate plant growth promoter by γ irradiation of alginate solution containing hydrogen peroxide
| Autor: | Le Thi Thuy Trang, Le Quang Luan, Nguyen Huynh Phuong Uyen, Nguyen Quoc Hien, Vo Thi Thu Ha |
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| Rok vydání: | 2012 |
| Předmět: |
Plant growth
Molecular mass Alginates Hexuronic Acids Radiochemistry Growth promotion General Chemistry Hydrogen Peroxide Lettuce γ irradiation Ionizing radiation Molecular Weight Solutions chemistry.chemical_compound chemistry Glucuronic Acid Plant Growth Regulators Gamma Rays Spectroscopy Fourier Transform Infrared Irradiation General Agricultural and Biological Sciences Hydrogen peroxide Combined method Nuclear chemistry Mustard Plant |
| Zdroj: | Journal of agricultural and food chemistry. 60(7) |
| ISSN: | 1520-5118 |
| Popis: | Degraded alginate compounds with molecular weights of 7-26, 40-77, or 11-26 kDa were obtained by γ irradiation, hydrogen peroxide (5% H(2)O(2)) treatment, or a combination treatment involving ionizing radiation and H(2)O(2), respectively. The 14 kDa oligoalginate, prepared by the combined method, promoted the growth of mustard greens and lettuce at an optimal concentration of 75 mg/L. The growth promotion effects of the oligoalginate prepared by γ irradiation in the presence of H(2)O(2) were statistically equivalent to those of the oligoalginate prepared by γ irradiation only. The combination of γ irradiation and H(2)O(2) reduced the required irradiation dosage by a factor of 9 relative to the oligoalginate produced by γ irradiation only. The combination treatment (γ irradiation/H(2)O(2)) may be carried out on a large scale at low cost to produce oligoalginate for use as a plant growth promoter in agricultural industries. |
| Databáze: | OpenAIRE |
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