被引排行
Research Progress on Recycling of Organic Solid Wastes Based on Aerobic Compost
ZHOU Ji-hao;SHEN Xiao-dong;ZHANG Ping;SHI Jie;ZHAO Zhi-wei;ZHANG Shuai;MAI Zheng-jun;Rapid increase of population and urbanization make the generation of solid wastes increase around the world,and aerobic compost is an efficient way to dispose organic solid wastes,recycle organic matters,and improve soil structure and fertility.The principle,development situation,influencing factors,and control parameters of aerobic compost of organic solid wastes are introduced.The utilization of compost products is reviewed,the harmless evaluation indexes are summarized,the beneficial effects of compost application on soil and plants are analyzed,the potential problems of utilizing compost products are pointed out,and the development trend of aerobic compost of organic solid wastes is prospected.
Synthesis of γ-Aminobutyric Acid
WANG Jin-ling1,YUAN Jun1,LIU Deng-cai2 (1.College of Science,Huazhong Agricultural University,Wuhan 430070,China;2.College of Animal Science and Veterivary Medicine,Huazhong Agricultural University,Wuhan 430070,China)γ-Aminobutyric acid was synthesised using 2-pyrrolidone as starting material under basic condition.Through derivatization of γ-aminobutyric acid with phenyl isothiolyanate,the purity of γ-aminobutyric acid determined by UV-HPLC was 99%,and its yield was 80%.
Application Status and Development Potential of Straw Biomass Energy
LOU Yue-yun1,ZHANG Hui-fang2 (1.College of Chemistry and Chemical Engineering,Nanjing University of Technology, Nanjing 210009,China;2.Library of Hubei University,Wuhan 430062,China)In this paper,the application status,development potential of straw biomass energy were reviewed.The related technology issues were analyzed,and the suggestions were put forward.
Determination of Ethylene Release Rate in Rape by Gas Chromatography
LIU Zhi-yong,SHEN Chun-zhang,DONG Yuan-yan(Department of Chemistry,College of Science,Huazhong Agricultural University,Wuhan 430070,China)A gas chromatography(GC) was applied for the determination of ethylene in this article.Using capillary column and quantitative determination by peak high,result showed RSD was 1.10%,ethylene release rate in rape induced by 1.4% Huashaling WP1 was(1.47 μL·g-1·h-1),but in CK was(0.06 μL·g-1·h-1).The result obviously indicated the change of the ethylene release rate between the rape induced with Huashaling and the CK.The determination method was satisfactory with convenience,high speed and high sensitivity.
Study on Extraction Technique and Antibacterial Activity for Essential Oil from Platycladus Orientalis
GONG Yan-ling1,JIN Hong1,WANG Hong-bo2(1.Department of Pharmaceutical,College of Chemical Engineering,Qingdao University of Science and Technology,Qingdao 266042,China;2.People′s Hospital of Jimo,Jimo 266200,China)The optimal extraction technique and antibacterial activity for the essential oil from Platycladus orientalis were investigated.The essential oil was extracted by the method of steam distillation and the essential oil yield was evaluated as main indicator.The essential oil was analyzed by TLC and GC.The antibacterial activity of essential oil was measured by the diameter of antibacterial circle.The optimal extraction process for essential oil from Platycladus orientalis was obtained through orthogonal experiment as follows:the powder of 20~30 eyelets was soaked for 12 h with 6 times water and then extracted for 5 h.The essential oil had obvious antibacterial activity on Micrococcus tetragenus,Staphycoccus aureus,Escherichia coli and Enterobacter aerogenus,but had no obvious antibacterial activity on Bacillus subtilis.
The New Development of Research on Copolymer Scale Inhibitor in China
ZHAO Yan-sheng,SUN Feng-er,LIU Yong-mei,DANG Zai-qing,WANG Hua(College of Chemistry and Chemical Engineering,Taiyuan University of Technology,Taiyuan 030024,China)Copolymer scale inhibitor is widely used in the treatment of circulating cooling water.In this paper,the new development of research on copolymer scale inhibitor and dispersant was introduced in details from several aspects,such as natural polymer scale inhibitors,carboxylic acid copolymer scale inhibitors,sulfonic acid copolymer scale inhibitors,phosphor-containing polymer scale inhibitors and new green copolymer scale inhibitors etc..Some advices on the development of research on copolymer scale inhibitor were put forward.
Scavenging Effects of Spirulina and Polysaccharides Spirulina Platensis on Active Oxygens and Its Antioxidation in vitro
LI Ling1,GAO Yun-tao2,DAI Yun2,YANG Yi-lin2,WANG Xue-mei2(1.Baoshan Teachers′College,Baoshan 678000,China;2.School of Chemistry and Bio-Science,Yunnan Nationalities University,Kunming 650031,China)Scavenging effects of Spirulina and polysaccharides Spirulina platensis on active oxygen species ·OH and ·O-2 generated by Fenton reaction and riboflavine photosensitization in vitro were investigated by the means of spectrophotometry.The inhibition effects of Spirulina and polysaccharides Spirulina platensis on the lipid peroxidation and damage of DNA chain induced by hydroxyl radical were observed by lipid peroxidation system mediated by FeSO4 and thiobarbituric acid spectrophotometry.The results showed that Spirulina and polysaccharides Spirulina platensis could scavenge ·OH、·O-2 efficiently.It could also significantly inhibit lipid peroxidation and damage of DNA by radical.
Research Progress of Pathways and Mechanisms of Decarboxylation
GONG Yan,LIN Lu,SUN Yong,PANG Chun-sheng(State Key Lab of Pulp and Paper Engineering,Department of Resources Science and Engineering,South China University of Technology,Guangzhou 510640,China)Decarboxylation is increasingly applied in the fields of chemical engineering,biological engineering,medicine and foodstuff,ect.More and more advanced methods of decarboxylation which include thermal-chemical decarboxylation found at the first,then electrochemical,photochemical,photo-electrochemical,and catalytic decarboxylation have been discovered by degrees.Some improve the velocity of decarboxylation,and others make the possibility of decarboxylation of some substance,which can reuse the castoff from the fields of industries and living,and be benefit to exploit the resource and protect the environment,promoting the improvement of society and development of economy.The research progress of pathways and mechanisms of decarboxylation are stated in this article.
Research Progress of Microwave Aided Extraction Technique on the Extraction of Natural Active Constituents
SHI Guo-rong, RAO Li-qun (College of Science,Hunan Agricultural University ,Changsha 410128,China)This paper presents the principle of the microwave aided extraction technique(MAE) and reviews its recent research progress on the extraction of natural active constituents.
Advances of Research on Synthesis of Ionic Liquids and Its Application
ZHANG Jin-sheng,BIAN Lu-ning,LI Li-hua(Petrochemical Processing College,Liaoning University of Petrol and Chemical Technology,Fushun 113001,China)Ionic liquids is a kind of widely used solvent with outstanding properties.The particle introduces the synthesis techniques and applications of ionic liquids,and summarizes the relative merits and shortcomings of each synthetic method.The synthesis by microwave is put forward and the optimum synthetic method is generalized.