TY - JOUR T1 - Analysis of volatiles in Pinotage wines by stir bar sorptive extraction and chemometric profiling. AU - Weldegergis,Berhane T, AU - Crouch,Andrew M, Y1 - 2008/10/22/ PY - 2008/10/23/pubmed PY - 2009/1/1/medline PY - 2008/10/23/entrez SP - 10225 EP - 36 JF - Journal of agricultural and food chemistry JO - J Agric Food Chem VL - 56 IS - 21 N2 - A fast, simple, cost-effective, and reliable method based on stir bar sorptive extraction (SBSE) in the headspace mode was used for the analysis of 39 volatile components in Pinotage wines. The method was sensitive, with LODs ranging from 50.0 pg/L to 281 ng/L and LOQs between 180 pg/L and 938 ng/L. Precision was between 6 and 20%. The intermediate precision was within the acceptable range. Moreover, good calibration curves with R(2) > 0.99 for all compounds were achieved. The method was successfully applied for the analysis of 87 young Pinotage wines of vintages 2005 and 2006 collected from various South African regions. To characterize the results based on vintage and origin, the obtained concentrations of the compounds were subjected to chemometric analysis. Exploratory factor analysis (FA), principal component analysis (PCA), and analysis of variance (one-way ANOVA) were consecutively done. The chemometrics approach revealed a reasonable correlation among the volatile components of these wines, as well as with respect to their year of production. SN - 1520-5118 UR - https://www.unboundmedicine.com/medline/citation/18939846/Analysis_of_volatiles_in_Pinotage_wines_by_stir_bar_sorptive_extraction_and_chemometric_profiling_ L2 - https://doi.org/10.1021/jf8015706 DB - PRIME DP - Unbound Medicine ER -