• 滴滴,你的“美好出行”承诺何时能兑现 2019-05-20
  • 一诚长老:出去走一走 才知道有没有定力 2019-05-20
  • 玛莎拉蒂车型价格调整 最高降幅超13万元 2019-05-19
  • 国务院办公厅印发《意见》 推进奶业振兴保障乳品质量安全 2019-05-19
  • 一夜巨震!美联储打出加息"王炸":中国跟不跟? 2019-05-13
  • 习近平会见巴基斯坦总统侯赛因 2019-05-12
  • 重庆要闻--重庆频道--人民网 2019-05-11
  • 人民网A区地方频道IP定向板块--黑龙江频道--人民网 2019-05-07
  • 备孕体检孕前三个月最佳 2019-05-05
  • 苏宁418战报:全渠道增长156% 2019-05-05
  • 致敬经典 盘点虽停产却难以忘怀的车型 2019-05-01
  • “一周注射一次” 有效改善血糖达标 2019-05-01
  • (原创)不能放任拼多多沦为假货“集散地” 2019-04-26
  • 几十架战机起飞后消失,搜寻代价大,美军放弃寻找拿出巨额封口费 2019-04-25
  • 【理上网来喜迎十九大】姚树洁:世界看好中国的未来 2019-04-24
  • 我的账户 7×24小时客服热线:400-829-7929 语言:中超直播乐视
    热门产品: 原人参二醇,人参皂苷,虫草素,6-姜酚,中药成分化合物库
    产品分类
    在线咨询
    联系电话:
    销售:
    400-829-7929(7*24小时)
    028-82633397-801, 802, 803 
    028-82633860-801, 802, 803
    技术服务和产品定制:
    028-82633987
    在线服务:  
    沈帅 点击这里给我发消息 
    文静  点击这里给我发消息
    文献信息

    中甲赛程2018积分表:Precursor ion scan driven fast untargeted screening and semi-determination of caffeoylquinic acid derivatives in Cynara scolymus L.

    期刊名:Food Chemistry
    文献编号:
    文献地址: //www.sciencedirect.com/science/article/pii/S0308814614009169
    发表日期:2015 Jan.1.

    ?Proanthocyanidin screening by LC–ESI-MS of Portuguese red wines made with teinturier grapes

    Natércia Teixeira, Joana Azevedo, Nuno Mateus, Victor de Freitas, 

    Abstract

    中超直播乐视 www.twfpv.com Proanthocyanidins (PAs) are one of the most important polyphenolic compounds in wine. Among PAs, prodelphinidin (PD) dimers and trimers have not been widely detected in wines due to the lack of available commercial standards and the difficulty to detect and isolate them from natural sources. LC–ESI-MS (liquid chromatography–electrospray ionization-mass spectrometry) with the right chromatographic conditions has proven to be a powerful tool for PAs detection and identification in complex samples. This technique has been applied to an exhaustive study of PA composition of two Portuguese red wines made with teinturier grapes, especially for the identification of PD dimers and trimers. Tandem mass spectrometry (MS/MS) with ion trap provided additional information about the structures of these compounds through the fragmentation patterns of the pseudomolecular ions. A LC–ESI-MS method was optimized and 41 different compounds were found. Among them are included 8 PD dimers and 13 PD trimers.

     (-)Epigallocatechin (EGC) and (-)-epigallocatechin gallate (EGCG) were purchased from Biopurify Phytochemicals Ltd (Sichuan, China)

    在线客服系统
  • 滴滴,你的“美好出行”承诺何时能兑现 2019-05-20
  • 一诚长老:出去走一走 才知道有没有定力 2019-05-20
  • 玛莎拉蒂车型价格调整 最高降幅超13万元 2019-05-19
  • 国务院办公厅印发《意见》 推进奶业振兴保障乳品质量安全 2019-05-19
  • 一夜巨震!美联储打出加息"王炸":中国跟不跟? 2019-05-13
  • 习近平会见巴基斯坦总统侯赛因 2019-05-12
  • 重庆要闻--重庆频道--人民网 2019-05-11
  • 人民网A区地方频道IP定向板块--黑龙江频道--人民网 2019-05-07
  • 备孕体检孕前三个月最佳 2019-05-05
  • 苏宁418战报:全渠道增长156% 2019-05-05
  • 致敬经典 盘点虽停产却难以忘怀的车型 2019-05-01
  • “一周注射一次” 有效改善血糖达标 2019-05-01
  • (原创)不能放任拼多多沦为假货“集散地” 2019-04-26
  • 几十架战机起飞后消失,搜寻代价大,美军放弃寻找拿出巨额封口费 2019-04-25
  • 【理上网来喜迎十九大】姚树洁:世界看好中国的未来 2019-04-24