Volatile aroma and sensory analysis of black raspberry wines fermented by different yeast strains

Robus coreanus Miquel is a small berry fruit used for Korean black raspberry (KBR) wine-making. Twelve different yeast strains were investigated by laboratory-scale fermentation to develop a wine with a high flavour quality. Volatile aroma compounds from the wines were analysed using headspace-solid phase microextraction-gas chromatography-mass spectrometry and sensory evaluation was performed to evaluate the flavour characteristics. The volatile aroma compounds that mostly contributed to the flavour of KBR wines were those related to fruity (esters) and floral (terpenes) aromas. Fifteen out of the 67 identified volatile compounds showed higher odour activity values than other compounds in the wines, and these compounds were considered as important contributors to the final aromas of the wine. Additionally, the KBR wine fermented by the M1 yeast strain had the highest sensory preference because of higher fruity and floral aroma characters compared with other wines. In addition to the M1 strain, the other yeast strains that produced favourable sensory characteristics included Enoferm CSM, Uvaferm VRB, Lalvin ICV GRE, Lalvin ICV Opale and LevureSeche Active. Of these strains, the M1 strain produced a particularly excellent black raspberry wine, and thus could be applied for further large-scale production of black raspberry wines. It is also expected that this work will expedite research on the production of high-quality black raspberry wines with beneficial physicochemical properties, functionality and good sensory characteristics. Copyright (C) 2015 The Institute of Brewing & Distilling