title: Ultrasensitive and simultaneous determination of twenty-one amino acids and amines in culture media, red wine and beer.
abstract: Ultrasensitive and simultaneous determination of amino acids and amines (AAs) in media and winemaking products is very important for evaluating the relationship profile between the depletion of AAs and aroma compounds formation. In this work, by combing the advantages of Taguchi's scheme with Pareto graphs and Range analysis pattern, an analytical method with efficiently improving fluorescence intensity and resolutions of AAs while saving the time and resources is developed to simultaneously and ultrasensitively detect 21 AAs in media, wine and beer. The results indicate the detection limit (DL) could be reached at ng L(-1) level (3.34-284.3 ng L(-1)), which is 10(6) higher than that of DL obtained by general method. Furthermore, the linear ranges are also established so that the proposed method could be accurately applied. These results demonstrate the method provides an easy and effective way to ultrasensitively and simultaneously analyse AAs in complex products.
authors.affiliation: College of Food Science and Engineering, Northwest A&F University, Yang Ling 712100, Shaanxi Province, China.
authors.forename: Zhongqiu
authors.initials: Z
authors.lastname: Hu
authors.affiliation: College of Food Science and Engineering, Northwest A&F University, Yang Ling 712100, Shaanxi Province, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Li
authors.affiliation: College of Food Science and Engineering, Northwest A&F University, Yang Ling 712100, Shaanxi Province, China.
authors.forename: Yahong
authors.initials: Y
authors.lastname: Yuan
authors.affiliation: College of Food Science and Engineering, Northwest A&F University, Yang Ling 712100, Shaanxi Province, China. Electronic address: yuetl305@nwsuaf.edu.cn.
authors.forename: Tianli
authors.initials: T
authors.lastname: Yue
mesh_terms: D000434:Alcoholic Beverages / Q000032:analysis*; D000588:Amines / Q000032:analysis*; D000596:Amino Acids / Q000032:analysis*; D001515:Beer / Q000032:analysis*; D003470:Culture Media; D014920:Wine / Q000032:analysis
chemical_list: D000588:Amines; D000596:Amino Acids; D003470:Culture Media
keywords: Fluorescence intensity and resolutions; Pareto graphs and Range analysis pattern; Taguchi’s scheme; The improved determination limit; Validation in matrices