天冬酰胺
蜜露
脯氨酸
地理标志
天冬氨酸
氨基酸
主成分分析
化学
谷氨酸
生物
植物
食品科学
生物化学
地理
数学
统计
区域科学
作者
Patrícia Brugnerotto,Adrián Fuente-Ballesteros,Beatriz Martín-Gómez,Ana M. Ares,Luciano Valdemiro Gonzaga,Roseane Fett,Ana Carolina Oliveira Costa,José Bernal
标识
DOI:10.1016/j.foodres.2023.113856
摘要
In this study, twenty free amino acids (FAA) were investigated in samples of bracatinga (Mimosa scabrella) honeydew honey (BHH) from Santa Catarina (n = 15) and Paraná (n = 13) states (Brazil), followed by chemometric analysis for geographic discrimination. The FAA determination was performed by gas chromatography-mass spectrometry (GC-MS) after using a commercial EZ:faast™ kits for GC. Eight FAA were determined, being proline, asparagine, aspartic and glutamic acids found in all BHH, with significant differences (p < 0.05). In addition, with the exception of proline, the others FAA (asparagine, aspartic and glutamic) normally showed higher concentrations in samples from Santa Catarina state, being that in these samples it was also observed higher FAA sums (963.41 to 2034.73 mg kg-1) when compared to samples from Paraná state. The variability in the results did not show a clear profile of similarity when the heatmap and hierarchical grouping were correlated with the geographic origin and the concentration of eight determined FAA. However, principal component analysis (PCA) demonstrated that serine, asparagine, glutamic acid, and tryptophan were responsible for the geographic discrimination among samples from Santa Catarina and Paraná states, since they were the dominant variables (r > 0.72) in the PCA. Therefore, these results could be useful for the characterization and authentication of BHH based on their FAA composition and geographic origin.
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