부산대학교 도서관

Study on the effect of herbicides flumioxazin (Pledge 50 WP); s-metolachlor + terbuthylazine + mesotrione (Lumax 538 SC) and pyraflufen-ethyl + glyphosate (Guild) on the content of esters, higher alcohols, aldehydes and terpenes in red wines from Cabernet Sauvignon variety was conducted. The gas chromatographic (GC-FID) analysis identified 14 volatile compounds in the variants. The highest total amount of volatile compounds was found in the wine obtained after treatment with Pledge 50 WP (326.62 mg.dm-3). Five higher alcohols, five esters, two terpenes, one aldehyde and methyl alcohol have been identified. Higher levels of higher alcohols in the wines obtained after treatment of the experimental variants with herbicides have been established. The dominant higher alcohol was 3-methyl-1-butanol. There was a trend of higher ethyl alcohol levels in the wines from experimental variants compared to the untreated control variant. The highest ester content in the Pledge 50 WP variant wine (65.61 mg.dm-3) was found. The esters were dominated by ethyl acetate which in the established concentrations (15.28 - 21.01 mg.dm-3) produced the pleasant fruity flavor. Lower levels of acetaldehyde were found in the wines from experimental variants compared to the control. The herbicidal treatments have a positive effect on the synthesis of geraniol terpene in the vine. Treating the areas with the studied herbicides led to an improved overall volatile and aromatic profile of the red wines obtained from Cabernet Sauvignon variety. This study demonstrated the advantages of conventional agriculture by the observed beneficial effects of the treatment with herbicides. They were a guarantee for stable and controlled development of the vine from Cabernet Sauvignon variety, which reflected in the improved volatile and aromatic quality in red wines produced from it. [ABSTRACT FROM AUTHOR]