Correlation Analyses between Price Levels and Aroma Characteristics of Imported Red Wines in China

HU Zhuyun;WANG Xingchen;TAO Yongsheng;FU Xiaomeng;ZHANG Fangfang;College of Enology,Northwest A&F University;Shaanxi Engineering Research Center for Viti-viniculture;

imported red wine;;price levels;;aroma characteristics;;principal component analysis(PCA);;partial least squares regression(PLSR)

The objective of this study was to assess the relationship between aroma characteristics and price levels of imported red wines in China.In this study,673 imported red wines with different price levels were selected.Aroma characteristics of the wines were described by sensory analysis and standardized using the aroma terms described in a wine aroma wheel.The frequency of appearance of each aroma term at different price levels was calculated.The aroma terms were divided into 12 aroma categories.The results obtained from principle component analysis revealed that wines with different price levels had specific aroma profiles.Additionally,there was a multiple linear relationship between aroma characteristics and price levels,with the exception of price level higher than 1 400 $(RMB yuan).Partial least square regression was used to confirm the mathematic relationship between aroma categories and price levels,that is,aroma characteristics from ageing were positively related to the price,and it was shown that the price level higher than 1 400 $ was an outlier.