摘要
采用顶空固相微萃取-气相色谱-质谱联用技术研究预包装纯葡萄汁的香气成分,建立其香气成分的气相色谱-质谱指纹图谱,结合化学计量分析对3个产地的混合果汁、纯葡萄汁、葡萄汁饮料共3类预包装葡萄汁制品进行鉴别。结果表明:预包装纯葡萄汁中主要香气成分共38种,所建立香气成分的气相色谱-质谱指纹图谱中共分析出15个特征峰,其峰面积之和占总峰面积的95%以上。利用夹角余弦法和相关系数法对指纹图谱进行分析,发现气相色谱-质谱指纹图谱相似度与其品质呈正相关。所建立的香气成分指纹图谱结合化学计量分析能准确将预包装混合果汁、葡萄汁饮料和纯葡萄汁鉴别区分。
The aroma components of prepackaged pure grape juice were investigated and their gas chromatography-mass spectrometry(GC-MS) fingerprints were established by solid phase micro-extraction-gas chromatography-mass spectrometry(SPME-GC-MS) combined with similarity evaluation for the first time. By utilizing the fingerprinting, the qualities of 3 kinds of commercial grape juice from 3 regions were assessed. The results showed that 38 main aroma components were identified in commercial grape juice, with a total of 15 peaks being detected as the characteristic peaks, and their areas accounted for more than 95% of the total peak area. The GC-MS fingerprints were analyzed by angle cosine and correlation coefficient. It was concluded that a positive correlation was found between the similarity of GC-MS chromatograms and the quality of grape juice. Prepackaged mixed juice, grape juice beverage and pure grape juice could be accurately identified by their aroma components fingerprints. The GC-MS fingerprints of prepackaged pure grape juice can provide a scientific basis for the quality control and authenticity identification of grape juice.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2015年第8期156-161,共6页
Food Science
基金
国家质检总局公益性行业科研专项(2012104002-4)
关键词
预包装纯葡萄汁
香气成分
气相色谱-质谱指纹图谱
化学计量分析
质量评价
prepackaged pure grape juice
aroma component
gas chromatography-mass spectrometry fingerprints
chemometrics methods
quality evaluation
