title: Electronic detection of Drechslera sp. fungi in charentais melon ( Cucumis melo Naudin) using carbon-nanostructure-based sensors.
abstract: The development of chemical sensor technology in recent years has stimulated an interest regarding the use of characteristic volatiles and odors as a rapid and early indication of deterioration in fruit quality. The fungal infestation by  Drechslera  sp. in melons is a severe problem, and we demonstrate that electronic sensors based on carbon nanostructures are able to detect the presence of these fungi in melon. The responses of sensor conductance G and capacitance C at 27 kHz were measured and used to calculate their ΔG and ΔC variation over the full melon ripening process under shelf conditions with proliferation of  Drechslera  sp. fungi. The sensor response showed that these fungi can be electronically identified in charentais melon, constituting an effective and cheap test procedure to differentiate between infected and uninfected melon.
authors.affiliation: Departamento de Física, Universidade Federal do Paraná, Caixa Postal 19044, 81531-990 Curitiba, Brazil.
authors.forename: Márcia W C C
authors.initials: MW
authors.lastname: Greenshields
authors.forename: Messai A
authors.initials: MA
authors.lastname: Mamo
authors.forename: Neil J
authors.initials: NJ
authors.lastname: Coville
authors.forename: Andréa P
authors.initials: AP
authors.lastname: Spina
authors.forename: Diogo Filipe
authors.initials: DF
authors.lastname: Rosso
authors.forename: Elaine C
authors.initials: EC
authors.lastname: Latocheski
authors.forename: João Guilherme
authors.initials: JG
authors.lastname: Destro
authors.forename: Ida C
authors.initials: IC
authors.lastname: Pimentel
authors.forename: Ivo A
authors.initials: IA
authors.lastname: Hümmelgen
mesh_terms: D001203:Ascomycota / Q000302:isolation & purification*; D002244:Carbon / Q000737:chemistry*; D019662:Cucurbitaceae / Q000382:microbiology*; D004581:Electronics; D049329:Nanostructures
chemical_list: D002244:Carbon