Objective measures of grape quality: From Cabernet Sauvignon grape composition to wine sensory characteristics

Publication date: Available online 27 January 2020Source: LWTAuthor(s): Jun Niimi, Oliver Tomic, Tormod Næs, Susan E.P. Bastian, David W. Jeffery, Emily L. Nicholson, Suzanne M. Maffei, Paul K. BossAbstractIn an investigation of objective measures that link grape composition to wine quality, this study sought to identify Cabernet Sauvignon grape parameters that predict the sensory properties of the corresponding wines. Eleven chemical measures comprising volatile and non-volatile compounds, enzyme activity plus standard industry harvest measurements were applied to grape samples obtained from different regions throughout South Eastern Australia over three vintages. Grapes underwent controlled vinification and the resulting wines evaluated with sensory descriptive analysis. The entire multi-vintage data sets were combined and modelled using a combination of partial least squares (PLS) and sequential and orthogonalised (SO) -PLS regression techniques. Optimal models were obtained with single sensory attributes rather than global modelling with the entire sensory profile. Five grape chemical measures, which in the main were harvest parameters, were used along and orthogonalised to model 14 sensory attributes of the Cabernet Sauvignon wines. The seven remaining measures were not used due to their poor ability to model wine sensory attributes, with enzyme activity and tannin by HPLC explaining the least. The study revealed new insights into the relationship between grape che...
Source: LWT Food Science and Technology - Category: Food Science Source Type: research

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Source: Thoracic Cancer - Category: Cancer & Oncology Authors: Tags: ORIGINAL ARTICLE Source Type: research
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Source: Thoracic Cancer - Category: Cancer & Oncology Authors: Tags: ORIGINAL ARTICLE Source Type: research
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Source: BMC Pharmacology and Toxicology - Category: Drugs & Pharmacology Tags: BMC Pharmacol Toxicol Source Type: research
Date: Friday, 02 28, 2020; Speaker: Jonathan Wasserman, Staff Physician, SickKids; BG 10-CRC; FAES 1&2
Source: NIH Calendar of Events - Category: American Health Source Type: events
Date: Tuesday, 03 03, 2020; Speaker: TBD, TBD; Dr. Jeremy Veenstra-VanderWeele, Columbia University; Building: Building 10 (Clinical Center); Lipsett Auditorium; CME Credit
Source: NIH Calendar of Events - Category: American Health Source Type: events
Date: Tuesday, 03 10, 2020; Speaker: TBD, TBD; Dr. Jeff Elias, University of Virginia School of Medicine; Building: Building 10 (Clinical Center); Lipsett Auditorium; CME Credit
Source: NIH Calendar of Events - Category: American Health Source Type: events
Date: Tuesday, 03 10, 2020; Speaker: Staff NIH Library; Building: Building 10 (Clinical Center); NIH Library Training Room
Source: NIH Calendar of Events - Category: American Health Source Type: events
Date: Wednesday, 03 11, 2020; Speaker: Staff NIH Library; Building: Building 10 (Clinical Center); This class is presented as a webinar only; Videocast Event
Source: NIH Calendar of Events - Category: American Health Source Type: events
Date: Thursday, 03 12, 2020; Speaker: BTRIS instructor; Building: Building 10 (Clinical Center); NIH Library Training Room
Source: NIH Calendar of Events - Category: American Health Source Type: events
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