检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:李萌[1] 章慧莺[1] 张宁[1] 陈海涛[1] 孙宝国[1] 张玉玉[1]
出 处:《精细化工》2014年第2期218-224,共7页Fine Chemicals
基 金:"十二五"国家科技支撑项目(2011BAD23B01);北京市教育委员会科技发展计划重点项目(KZ201110011015)~~
摘 要:采用顶空固相微萃取与GC-MS联用方法对煎鸡蛋中挥发性成分进行提取与分析,考察萃取头、萃取温度和吸附时间对分析结果的影响,得到优化的顶空固相微萃取条件为:黑色萃取头(75μm Carboxen/PDMS),吸附温度75℃,吸附时间70 min。在优化的条件下分析,共鉴定出50种挥发性风味成分,其中,醛类16种(40.588%)、含氮化合物14种(23.639%)、醇类8种(7.156%)、烃类3种(4.800%)、酚类及杂环化合物3种(1.755%)、酮类3种(0.868%)及含硫化合物3种(0.563%)。鉴定出含量较高(相对质量分数大于2.5%)的物质有:2,5-二甲基吡嗪、3-甲基丁醛、2-甲基吡嗪、壬醛、苯甲醛、反,反-2,4-癸二烯醛、辛醛、2-甲基丁醛、反-2-癸烯醛、3,7-二甲基-1,6-辛二烯、1-辛烯-3-醇。Volatile flavor components of fried eggs were extracted by head space solid phase microextraction(HS-SPME) and analyzed by gas chromatography-mass spectrometry(GC-MS). A 75 μm Carboxen/PDMS, adsorption time of 70 min, and a temperature of 75 ℃, were selected as the optimum conditions. This optimized method was applied to analyze a real sample. A total of 50 volatile compounds were identified in fried eggs, including 16 aldehydes (40. 588% ) , 14 nitrogen-containing compounds(23. 639% ) ,8 alcohols(7. 156% ) ,3 hydrocarbons(4. 800% ) ,3 phenols and heterocyclic compounds ( 1. 755 % ) ,3 ketones (0. 868% ), and 3 sulfocompounds (0. 563 % ). The relative contents of the main volatiles ( above 2.5% ) were as follows : 2,5-dimethyl-pyrazine, 3-methyl-butanal, methyl- pyrazine, nonanal, benzaldehyde, ( E, E) -2,4-decadienal, octanal, 2-methyl-butanal, ( E ) -2-decenal, 3, 7-dimethyl-1,6-octadiene, 1-octen-3-ol, et al.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.66