and deteriorate rapidly with the high susceptibility to fungal infections by a broad range of bacterial phytopathogens, resulting in severe economic losses. Rhizopus stolonifer (Ehrenb. ex Fr.) Vuill. is a representative necrotrophic fungal
Authors:V. Parrag, J. Felföldi, L. Baranyai, A. Geösel, and F. Firtha
From the nineteen-nineties, cobweb disease caused serious losses for the mushroom sector in Europe, in the USA, and in Australia (Fletcher & Gaze, 2008), so it is one of the most notable fungal infections of cultivated white button mushroom (Agaricus bisporus). The aim of this study was to identify cobweb disease (Cladobortyum dendroides) caused cap spotting and brownish rot on the mushroom sporocarp, and to find a proper discrimination method in the case of this infection.Fruiting body samples were divided into 4 groups, a control one and three others treated with different chemicals that are tested against fungal infections. The groups were subdivided into 2 portions and the first was infected with cobweb disease. Images of the caps were recorded and their hyperspectral images were acquired in the wavelength range of 900–1700 nm.On the hyperspectral images infected and healthy areas were selected, on these average spectra differences were found around the known water peaks (1200 and 1450 nm). The spatial distribution of the water content can be used for the detection of the spoilage, because the infected areas showed different reflection values at these water absorption peaks.Support Vector Machine method was applied successfully to discriminate between the infected and control groups and Monte Carlo cross-validation was carried out.
Authors:V. Parrag, Z. Gillay, Z. Kovács, A. Zitek, K. Böhm, B. Hinterstoisser, R. Krska, M. Sulyok, J. Felföldi, F. Firtha, and L. Baranyai
Introduction The detection of fungal infections is of great importance in food science since one of the most serious problems of food safety is the presence of mycotoxins produced by microscopic fungi. Molds can grow on many kinds of substrates
, D. , Hutchinson , J. , Kelly , S. , … & the Canadian Nosocomial Infection Surveillance Program ( 2010 ): Hypervirulent Clostridium difficile strains in hospitalized patients, Canada . Emerg. Infect. Dis. , 16 , 678 – 681