Zhang Hao, Yang Minmin, Luan Qian, Tang Hu, Huang Fenghong, Xiang Xia, Yang Chen, Bao Yuping
Department of Product Processing and Nutriology, Hubei Key Laboratory of Lipid Chemistry and Nutrition, Ministry of Agriculture Key Laboratory of Oil Crops Biology, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences , Wuhan 430062, China.
Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Sesame Genetic Improvement Laboratory, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences , Wuhan 430062, China.
J Agric Food Chem. 2017 May 17;65(19):3785-3791. doi: 10.1021/acs.jafc.6b05815. Epub 2017 May 5.
Cellulose anionic hydrogels were successfully prepared by dissolving TEMPO-oxidized cellulose nanofibers in NaOH/urea aqueous solution and being cross-linked with epichlorohydrin. The hydrogels exhibited microporous structure and high hydrophilicity, which contribute to the excellent water absorption property. The growth indexes, including the germination rate, root length, shoot length, fresh weight, and dry weight of the seedlings, were investigated. The results showed that cellulose anionic hydrogels with suitable carboxylate contents as plant growth regulators could be beneficial for seed germination and growth. Moreover, they presented preferable antifungal activity during the breeding and growth of the sesame seed breeding. Thus, the cellulose anionic hydrogels with suitable carboxylate contents could be applied as soilless culture mediums for plant growth. This research provided a simple and effective method for the fabrication of cellulose anionic hydrogel and evaluated its application in agriculture.
通过将TEMPO氧化的纤维素纳米纤维溶解在NaOH/尿素水溶液中并与环氧氯丙烷交联，成功制备了纤维素阴离子水凝胶。该水凝胶呈现出微孔结构和高亲水性，这有助于其优异的吸水性能。研究了包括种子发芽率、根长、茎长、鲜重和干重在内的生长指标。结果表明，具有合适羧酸盐含量的纤维素阴离子水凝胶作为植物生长调节剂有利于种子发芽和生长。此外，它们在芝麻育种和生长过程中表现出较好的抗真菌活性。因此，具有合适羧酸盐含量的纤维素阴离子水凝胶可作为植物生长的无土培养基。本研究为纤维素阴离子水凝胶的制备提供了一种简单有效的方法，并评估了其在农业中的应用。
