Changes in norisoprenoid levels with long-term nitrogen fertilization in different vintages of Vitis vinifera var. Riesling wines
نویسندگان
چکیده
• Norisoprenoids are important compounds that contribute to the aroma of wines. Examples of norisoprenoids are ß-ionone and ß-damascenone , which contribute intense fruity aromas; TDN (trimethyldihydro-naphtalene), which contributes the typical kerosene, or petrol, note in wines (in high concentrations, TDN may be considered a defect); and actinidol and vitispirane , which contribute other complex aging aromas. Chardonnay contains many types of norisoprenoids, whereas Riesling has fewer.
منابع مشابه
Timing of cluster light environment manipulation during grape development affects C13 norisoprenoid and carotenoid concentrations in Riesling.
Sunlight exposure of winegrape clusters is frequently reported to increase C(13)-norisoprenoids in resulting wines, but the timing and mechanism of this influence is not well understood. Fruit zone leaf removal was applied to Vitis vinifera cv. Riesling at three timings: 2, 33 and 68 days past berry set (PBS), and compared to an untreated control. Free and total 1,1,6-trimethyl-1,2-dihydronapht...
متن کاملFree Monoterpene Isomer Profiles of Vitis Vinifera L. cv. White Wines
Monoterpene compounds contribute floral and fruity characters to wine and are desired by grape growers and winemakers for many white wines. However, monoterpene isomers, especially monoterpene enantiomers, have been little explored. It is possible to identify and quantitate 17 monoterpene isomers in 148 varietal wines from eight grape varieties; Chardonnay, Gewürztraminer, Muscat, Pinot gris, R...
متن کاملCore Microbiota and Metabolome of Vitis vinifera L. cv. Corvina Grapes and Musts
The composition and changes of the fungal population and of the metabolites present in grapes and in ferments of Vitis vinifera L. cv. Corvina, one of the major components of the Amarone musts, were dissected aiming at the identification of constant characteristics possibly influenced by the productive process. The fungal populations and metabolomic profiles were analyzed in three different vin...
متن کاملColor of Riesling and Vidal Wines as Affected by Bentonite, Cufex°
Browning has been controlled by sulfur dioxide (SO2 ) in wine for many years, but other compounds also have the potential to reduce browning. Bentonite, Cufex and SO2 were applied to juice from Riesling grapes Vitis vinifera L. and Vidal grapes, a French-American Hybrid to compare their effects on wine browning. Seven treatments (control, 35 mg/L SO2, 70 mg/L SO2, 120 mg/L bentonite, 240 mg/L b...
متن کاملPhenolic profiles and antioxidant properties of young wines made from Yan73 (Vitis vinifera L.) and Cabernet Sauvignon (Vitis vinifera L.) grapes treated by 24-epibrassinolide.
The grape berries of two varieties, Yan73 (Vitis vinifera L.) and Cabernet Sauvignon (CS) (Vitis vinifera L.) were treated with 0.40 mg/L 24-epibrassinolide (EBR), 1.00 mg/L brassinazole (Brz), and deionized water (control), at the veraison period. The EBR treatment significantly increased total phenolic content (TPC), total tannin content (TTC) and total anthocyanin content (TAC) of Yan73 and ...
متن کامل