title: Effects of Botrytis cinerea and Erysiphe necator fungi on the aroma character of grape must: A comparative approach.
abstract: Botrytis cinerea and Erysiphe necator are among the most relevant fungi in viticulture. In order to deepen our knowledge about their potential impact on wine quality, their effects on the aroma character of the initial stage of wine production, i.e. the must were studied. The main aroma compounds were determined by gas chromatography-olfactometry (GC-O) and ranked according to their relative intensities by means of aroma extract dilution analysis (AEDA). Clear differences between healthy and infected samples were observed. Botrytis cinerea had a positive impact on fruity and floral notes while several earthy smelling compounds were developed as result of the infection. Unlike in previous studies, however, we did not observe any clear differences in the quantities of earthy-mushroom-like smelling substances as result of the infection process with Erysiphe necator.
authors.affiliation: Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schuhstrasse 9, 91052 Erlangen, Germany. Electronic address: angela.lopez.pinar@fau.de.
authors.forename: Angela
authors.initials: A
authors.lastname: Lopez Pinar
authors.affiliation: Hochschule Geisenheim University, Department of Microbiology and Biochemistry, Von-Lade-Strasse 1, 65366 Geisenheim, Germany. Electronic address: doris.rauhut@hs-gm.de.
authors.forename: Doris
authors.initials: D
authors.lastname: Rauhut
authors.affiliation: Hochschule Geisenheim University, Department of Grapevine Breeding, Von-Lade-Strasse 1, 65366 Geisenheim, Germany. Electronic address: ernst.ruehl@hs-gm.de.
authors.forename: Ernst
authors.initials: E
authors.lastname: Ruehl
authors.affiliation: Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schuhstrasse 9, 91052 Erlangen, Germany; Fraunhofer Institute for Process Engineering and Packaging IVV, Department Sensory Analytics, Giggenhauserstrasse 35, 85354 Freising, Germany. Electronic address: andrea.buettner@fau.de.
authors.forename: Andrea
authors.initials: A
authors.lastname: Buettner
mesh_terms: D001203:Ascomycota / Q000737:chemistry*; D020171:Botrytis / Q000737:chemistry*; D002849:Chromatography, Gas; D005638:Fruit / Q000382:microbiology*; D009181:Mycoses; D012903:Smell; D027843:Vitis / Q000382:microbiology*; D055549:Volatile Organic Compounds / Q000032:analysis*
chemical_list: D055549:Volatile Organic Compounds
keywords: Botrytis cinerea; Erysiphe necator; Gas chromatography-olfactometry (GC-O); Must