Preparation of Oligoalginate Plant Growth Promoter by 纬 Irradiation of Alginate Solution Containing Hydrogen Peroxide

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• 作者：Le Quang Luan ; Vo Thi Thu Ha ; Nguyen Huynh Phuong Uyen ; Le Thi Thuy Trang ; Nguyen Quoc Hien
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2012
• 出版时间：February 22, 2012
• 年：2012
• 卷：60
• 期：7
• 页码：1737-1741
• 全文大小：338K
• 年卷期：v.60,no.7(February 22, 2012)
• ISSN：1520-5118

文摘

Degraded alginate compounds with molecular weights of 7鈥?6, 40鈥?7, or 11鈥?6 kDa were obtained by 纬 irradiation, hydrogen peroxide (5% H₂O₂) treatment, or a combination treatment involving ionizing radiation and H₂O₂, 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 纬 irradiation in the presence of H₂O₂ were statistically equivalent to those of the oligoalginate prepared by 纬 irradiation only. The combination of 纬 irradiation and H₂O₂ reduced the required irradiation dosage by a factor of 9 relative to the oligoalginate produced by 纬 irradiation only. The combination treatment (纬 irradiation/H₂O₂) may be carried out on a large scale at low cost to produce oligoalginate for use as a plant growth promoter in agricultural industries.

Keywords:

Degradation; 纬 irradiation; hydrogen peroxide; oligoalginate