Journal
JOURNAL OF FOOD SCIENCE
Volume 80, Issue 1, Pages C20-C28Publisher
WILEY-BLACKWELL
DOI: 10.1111/1750-3841.12691
Keywords
chemometric; organic acids; phenolic compounds; ultra-performance liquid chromatography; wine
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Funding
- Project of China Natl. Programs for Hi-tech Research and Development (863 Program) [2013AA102108]
- Fundamental Research Funds for the Central Universities [JUSRP1002]
- Program for Taishan Scholars, Shandong Province
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Characteristics of 106 wines from 5 major grape varieties and 3 typical geographic regions in China were investigated by means of profiling of organic acids and phenolic compounds analysis. An ultra-performance liquid chromatography method was developed and thus, large number of samples could be determined in a quick and reliable way. The results showed that different origins and varieties were characteristic of various profiles of organic acid and phenolic compounds. In order to investigate possible correlation between organic acids and phenolic compounds content and grape variety and/or geographical origin, analysis of variance and linear discriminant analysis (LDA) were conducted. A satisfactory LDA result for red wines according to geographic origin was obtained, in which the correct classification was 100% and the leave-one-out validation accuracy was 90%. The corresponding results of white wines were 91% and 86%, respectively. When LDA was processed, according to grape varieties, the proportionality of successfully classified wines was 96%, while the leave-one-out validation accuracy was 94%. The organic acids and phenolic compounds profiles were useful in the classification of Chinese wines according to grape variety and geographic origin.
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