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New FT-IR method to control the evolution of the volatile constituents of vinegar during the acetic fermentation process

机译:新的FT-IR方法可控制醋酸发酵过程中醋中挥发性成分的释放

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摘要

FT-IR calibrations have been made to estimate the aromatic compounds present in vinegars during the acetic fermentation process. A change in the concentration of the major species takes place in this process; ethanol drops from values of around 12% to <1%, while acetic acid increases from values of <0.02% to >10%. To perform these FT-IR calibrations specific zones of the IR spectrum have been employed, which have permitted the calibrations to be validated, with prediction error values below 10% for ethyl esters and higher alcohols, and with errors below 20% for fatty acids. For the case of derivatives of acetic acid and furfurals, the prediction errors in the validation of the method were between 20% and 30%.
机译:已经进行了FT-IR校准,以估计乙酸发酵过程中醋中存在的芳香族化合物。在此过程中,主要物种的浓度发生了变化。乙醇从约12%的值下降到<1%,而乙酸从<0.02%的值增加到> 10%。为了执行这些FT-IR校准,已使用了IR光谱的特定区域,这些区域允许对校准进行验证,其中乙酯和高级醇的预测误差值低于10%,脂肪酸的预测误差值低于20%。对于乙酸和糠醛的衍生物,该方法验证中的预测误差在20%至30%之间。

著录项

  • 来源
    《Food Chemistry》 |2010年第2期|575-579|共5页
  • 作者单位

    Grupo de Investigacion Quimico Analitica del Vino y Productos Agroalimentarios, Departamento de Quimica Analitica, Facultad de Ciencias, Universidad de Cadiz, P.O. Box 40, 11510 Puerto Real, Cadiz, Spain;

    Grupo de Investigacion Quimico Analitica del Vino y Productos Agroalimentarios, Departamento de Quimica Analitica, Facultad de Ciencias, Universidad de Cadiz, P.O. Box 40, 11510 Puerto Real, Cadiz, Spain;

    Grupo de Investigacion Quimico Analitica del Vino y Productos Agroalimentarios, Departamento de Quimica Analitica, Facultad de Ciencias, Universidad de Cadiz, P.O. Box 40, 11510 Puerto Real, Cadiz, Spain;

    Grupo de Investigacion Quimico Analitica del Vino y Productos Agroalimentarios, Departamento de Quimica Analitica, Facultad de Ciencias, Universidad de Cadiz, P.O. Box 40, 11510 Puerto Real, Cadiz, Spain;

    Grupo de Investigacion Quimico Analitica del Vino y Productos Agroalimentarios, Departamento de Quimica Analitica, Facultad de Ciencias, Universidad de Cadiz, P.O. Box 40, 11510 Puerto Real, Cadiz, Spain;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    FT-IR; vinegar aroma; acetic fermentation; SBSE;

    机译:红外光谱醋香气醋酸发酵上海证券交易所;

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