Agave americana Var. Marginata Hort. （Agavaceae） is a perennial herb. This paper summarized its classification, distribution, morphological characteristics, habit, flowering and fruiting, cultivation and reproductio...Agave americana Var. Marginata Hort. （Agavaceae） is a perennial herb. This paper summarized its classification, distribution, morphological characteristics, habit, flowering and fruiting, cultivation and reproduction, as well as multiple uses in daily life, which provided references for the exploitation and utilization of Agave americana Vat. Marginata Hort. （Agavaceae）.展开更多
[ Objective] To better study the functional components of Iongan fruits. [ Method] The content of y-aminobutyric acid （GABA） in 23 longan species planted in Guangxi were analyzed by automatic amino acid analyzer. [ ...[ Objective] To better study the functional components of Iongan fruits. [ Method] The content of y-aminobutyric acid （GABA） in 23 longan species planted in Guangxi were analyzed by automatic amino acid analyzer. [ Result] The content of y-aminobutyric acid was different in different Iongan species, ranging from 780 to 2 400 mg/kg （FW）with an average of was 1 610 mg/kg （FW）. Shixia Iongan （Wuxuan） had the highest content, and Dongbao No. 9 was the second. The highest GABA content was 3.1 times that of the lowest in Dawuyuan, and 1.5 times that of the average. [ Conclusion] The study provided guidance for the evaluation of GABA content in Iongan and the exploitation of Iongan resources.展开更多
Abstract The removal of cypermethrin with a red macroalga, Gracilaria lemaneiformis, was studied under laboratory conditions. Results showed that the residue contents with G. lemaneiformis were significantly lower tha...Abstract The removal of cypermethrin with a red macroalga, Gracilaria lemaneiformis, was studied under laboratory conditions. Results showed that the residue contents with G. lemaneiformis were significantly lower than those corresponding groups without the algal thalli after 96 h treatment. The removal rates decreased with increasing concentrations, which were about 50% without G. lemaneiformis after 96h exposure, and increased to 89%, 73%, and 66% in flasks with G. lemaneiformis at the concentrations of 10, 100, and 1000 gg L-1, respectively. The amount of biosorption （absorption and adsorption） by G. lemaneiformis increased with the increasing concentration and exposure time. Adsorption was the main process for the removal by G. lemaneiformis, which accounted for 75%-97% of the total biosorption. However, biosorption only contributed 0.5%-19.3% to the total losses of cypermethrin, which was more efficient under the low concentration. Natural losses contributed the largest portion of losses, which was over 65% in all treatments during the experiment. The unknown pathway of removal, which might be the bio-decomposed by microorganisms attaching the algal thalli, also contributed a lot to the total removal. The results suggested that cultivation of G. lemaneiformis could significantly remove cypermethrin, especially at low concentrations, and large-scale cultivation of G. lemaneiformis has considerable potential of biorestoration of eutrophic and cypermethrin-poUuted coastal sea areas.展开更多
文摘Agave americana Var. Marginata Hort. （Agavaceae） is a perennial herb. This paper summarized its classification, distribution, morphological characteristics, habit, flowering and fruiting, cultivation and reproduction, as well as multiple uses in daily life, which provided references for the exploitation and utilization of Agave americana Vat. Marginata Hort. （Agavaceae）.
基金Supported by Guangxi Scientific Research and Technological Development Project(Gui 0815009-2-5)
文摘[ Objective] To better study the functional components of Iongan fruits. [ Method] The content of y-aminobutyric acid （GABA） in 23 longan species planted in Guangxi were analyzed by automatic amino acid analyzer. [ Result] The content of y-aminobutyric acid was different in different Iongan species, ranging from 780 to 2 400 mg/kg （FW）with an average of was 1 610 mg/kg （FW）. Shixia Iongan （Wuxuan） had the highest content, and Dongbao No. 9 was the second. The highest GABA content was 3.1 times that of the lowest in Dawuyuan, and 1.5 times that of the average. [ Conclusion] The study provided guidance for the evaluation of GABA content in Iongan and the exploitation of Iongan resources.
基金financially supported by the National Key Technology R&D Program(No.2012BA C07B05)by the National Natural Science Founda tion of China(No.41276154)
文摘Abstract The removal of cypermethrin with a red macroalga, Gracilaria lemaneiformis, was studied under laboratory conditions. Results showed that the residue contents with G. lemaneiformis were significantly lower than those corresponding groups without the algal thalli after 96 h treatment. The removal rates decreased with increasing concentrations, which were about 50% without G. lemaneiformis after 96h exposure, and increased to 89%, 73%, and 66% in flasks with G. lemaneiformis at the concentrations of 10, 100, and 1000 gg L-1, respectively. The amount of biosorption （absorption and adsorption） by G. lemaneiformis increased with the increasing concentration and exposure time. Adsorption was the main process for the removal by G. lemaneiformis, which accounted for 75%-97% of the total biosorption. However, biosorption only contributed 0.5%-19.3% to the total losses of cypermethrin, which was more efficient under the low concentration. Natural losses contributed the largest portion of losses, which was over 65% in all treatments during the experiment. The unknown pathway of removal, which might be the bio-decomposed by microorganisms attaching the algal thalli, also contributed a lot to the total removal. The results suggested that cultivation of G. lemaneiformis could significantly remove cypermethrin, especially at low concentrations, and large-scale cultivation of G. lemaneiformis has considerable potential of biorestoration of eutrophic and cypermethrin-poUuted coastal sea areas.
