Aroma compounds and characteristics of noble-rot wines of Chardonnay grapes artificially botrytized in the vineyard.
Food Chem
; 226: 41-50, 2017 Jul 01.
Article
in En
| MEDLINE
| ID: mdl-28254017
ABSTRACT
Aroma characteristics and their impact volatile components of noble-rot wines elaborated from artificial botrytized Chardonnay grapes, obtained by spraying Botrytis cinerea suspension in Yuquan vineyard, Ningxia, China, were explored in this work. Dry white wine made from normal-harvested grapes and sweet wine produced from delay-harvested grapes were compared. Wine aromas were analysed by trained sensory panelists, and aroma compounds were determined by SPME-GC-MS. Results indicated that esters, fatty acids, thiols, lactones, volatile phenols and 2-nonanone increased markedly in noble-rot wines. In addition to typical aromas of noble-rot wines, artificial noble-rot wines were found to contain significant cream and dry apricot attributes. Partial Least-Squares Regression models of aroma characteristics against aroma components revealed that non-fermentative odorants were the primary contributor to dry apricot attribute, especially, thiols, C13-norisoprenoids, lactones, terpenols and phenolic acid derivatives, while cream attribute was dependent on both fermentative and non-fermentative volatile components.
Key words
2-Nonanone (PubChem: 13187); 3-Methyl-3-sulfanyl butanol (PubChem: 520682); 3-Sulfanylhexanol (PubChem: 521348); Artificially botrytized grapes; Botrytis cinerea; Ethyl 4-hydroxybenzoate (PubChem: 8434); Ethyl isovalerate (PubChem: 7945); Isopentanoic acid (PubChem: 3085367); Partial Least-Squares Regression (PLSR); Phenyl acetic acid (PubChem: 999); Sensory analysis; Wine aroma; α-Terpineol (PubChem: 17100); γ-Decalactone (PubChem: 12813); γ-Nonalactone (PubChem: 7710)
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Wine
/
Volatile Organic Compounds
/
Crop Production
/
Food Handling
Type of study:
Prognostic_studies
Country/Region as subject:
Asia
Language:
En
Journal:
Food Chem
Year:
2017
Document type:
Article
Affiliation country:
China