Temporal Check-All-That-Apply Characterization of Syrah Wine.
Temporal Check-All-That-Apply (TCATA) is a new dynamic sensory method for which analysis techniques are still being developed and optimized. In this study, TCATA methodology was applied for the evaluation of wine finish by trained panelists (n = 13) on Syrah wines with different ethanol concentrations (10.5% v/v and 15.5% v/v). Raw data were time standardized to create a percentage of finish duration, subsequently segmented into thirds (beginning, middle, and end) to capture panel perception. Results indicated the finish of the high ethanol treatments lasted longer (approximately 12 s longer) than the low ethanol treatment (P ≤ 0.05). Within each finish segment, Cochran's Q was conducted on each attribute and differences were detected amongst treatments (P ≤ 0.05). Pairwise tests showed the high ethanol treatments were more described by astringency, heat/ethanol burn, bitterness, dark fruit, and spices, whereas the low ethanol treatment was more characterized by sourness, red fruit, and green flavors (P ≤ 0.05). This study demonstrated techniques for dealing with the data generated by TCATA. Furthermore, this study further characterized the influence of ethanol on wine finish, and by extension wine quality, with implications to winemakers responsible for wine processing decisions involving alcohol management.
School of Food Science, Washington State Univ, PO Box 646376, Pullman, Wash., 99164, U.S.A.
Allison K
AK
Baker
Compusense Inc, 255 Speedvale Ave. W., Guelph, Ontario, N1H 1C5, Canada.
John C
JC
Castura
School of Food Science, Washington State Univ, PO Box 646376, Pullman, Wash., 99164, U.S.A.
Carolyn F
CF
Ross
D000328:Adult; D000431:Ethanol / Q000032:analysis; D005260:Female; D005504:Food Analysis; D005511:Food Handling; D063427:Food Quality; D005638:Fruit / Q000737:chemistry; D006801:Humans; D008297:Male; D008875:Middle Aged; D013649:Taste; D027843:Vitis / Q000737:chemistry; D014920:Wine / Q000032:analysis*; D055815:Young Adult
D000431:Ethanol
TCATA; ethanol; syrah; wine finish