中文摘要：本研究建立了一种利用核磁共振（NMR）和化学计量技术对不同来源啤酒进行鉴定的方法。应用核磁共振波谱法分析了罗什福尔8特拉普啤酒、其他特拉普啤酒和非特拉普啤酒共223个样本。结果表明：与非特拉普啤酒相比，特拉普啤酒中蚁酸和丙酮酸含量较高、乙酸和丙氨酸含量较低；与非罗什福尔地区产的啤酒相比，罗什福尔啤酒丙醇和异戊醇含量较高。罗什福尔8丙酮酸含量最高，五倍子酸、反丁烯二酸、乙酸、腺苷、尿苷、苯乙醇、伽马氨基丁酸和丙氨酸含量最低。
 
外文摘要：An NMR and chemometric analytical approach to classify beers according to their brand identity was developed within the European TRACE project (FP6-2003-FOOD-2-A, contract number: 0060942). Rochefort 8 Trappist beers (47 samples), other Trappist beers (76 samples) and non-Trappist beers (110 samples) were analyzed by H-1 NMR spectroscopy. Selected NMR signals were measured and used to build classification models. Three different classification problems were identified, namely Trappist versus non-Trappist, Rochefort versus Non-Rochefort, and Rochefort 8 versus non-Rochefort 8. In all the three cases, both a discriminant and a modeling approaches were followed, using partial least squares discriminant analysis (PLS-DA) and soft independent modeling of class analogies (SIMCA), respectively, leading to very high classification accuracy as evaluated by external validation. Information regarding chemical composition was also obtained: Trappist beers contain a higher amount of formic and pyruvic acids and a lower amount of acetic acid and alanine with respect to non-Trappist ones. Rochefort beers turned out to have also a higher content of propanol and isopentanol with respect to non-Rochefort samples. Finally, Rochefort 8, shows the highest content of pyruvic acid and the lowest content of gallic, fumaric, acetic acids, adenosine, uridine, 2-phenylethanol, GABA, and alanine.
 
外文关键词：Beer authentication； Nuclear magnetic resonance； Partial least squares discriminant analysis； Soft independent modeling of class analogies； Trappist beer
作者：Mannina, L; Marini, F; Antiochia, R; Cesa, S; Magr, A; Capitani, D; Sobolev, AP
作者单位：罗马萨皮恩扎大学
期刊名称：ELECTROPHORESIS
期刊影响因子：2.482
出版年份：2016
出版刊次：10
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