Center for Nuclear Techniques, Vietnam Atomic Energy Commission, Ho Chi Minh City, Vietnam.
J Agric Food Chem. 2012 Feb 22;60(7):1737-41. doi: 10.1021/jf204469p. Epub 2012 Feb 9.
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.
通过γ射线辐照、过氧化氢（5% H₂O₂）处理或辐照和 H₂O₂联合处理，分别得到分子量为 7-26、40-77 或 11-26 kDa 的降解褐藻酸钠化合物。通过联合方法制备的 14 kDa 寡褐藻酸钠在 75mg/L 的最佳浓度下促进芥菜和生菜的生长。在 H₂O₂存在下经γ射线辐照制备的寡褐藻酸钠的生长促进作用在统计学上与仅经γ射线辐照制备的寡褐藻酸钠相当。与仅用γ射线辐照制备的寡褐藻酸钠相比，γ射线和 H₂O₂的联合处理将所需的辐照剂量降低了 9 倍。该联合处理（γ射线/H₂O₂）可以在低成本的情况下进行大规模处理，以生产寡褐藻酸钠，用于农业产业中的植物生长促进剂。
