Journal of Agricultural and Food Chemistry · 2001 · 33 citations · 14 references
AgricultureFood SciencePlant SciencesFruit ScienceWine AnalysisWine ChemistryFruit Flavor ChemistryFruit QualityGrape Maturity AssessmentPh AnalysisAroma VariationGrape Quality AssessmentMultiple RegressionOrganoleptic ProfileSoluble Solids ContentSoluble Solids Content AssessmentSoluble Solids Content MeasurementSoluble Solids Determination
Table grapes of cv. Mystery and Prime were harvested from 10 farms in two growing areas of Israel over two seasons. The grapes were separated on the basis of sucrose solutions from 12 to 18%; soluble solids content (SSC), titratable acidity (TA), and pH were determined; and taste tests were conducted. SSC gave the best correlation with taste tests, and multiple regression of SSC, TA, and pH improved the correlation. There were both seasonal and regional differences in the measured maturity parameters. Lower TA and higher pH were found in grapes from the Jordan Valley. Volatiles were predominantly C(6) compounds hexanal and 2-hexanal, contributing a fresh aroma to the grapes. It is concluded that Mystery and Prime grapes have good organoleptic quality if harvested at SSC levels of >14%.
14