Differentiation and identification of grape-associated black aspergilli using Fourier transform infrared (FT-IR) spectroscopic analysis of mycelia.

The purpose of this study was to evaluate the potential of FT-IR spectroscopy as a high-throughput method for rapid differentiation among the ochratoxigenic species of Aspergillus carbonarius and the non-ochratoxigenic or low toxigenic species of Aspergillus niger aggregate, namely A. tubingensis and A. niger isolated previously from grapes of Greek vineyards.

Modelling the influence of temperature, water activity and sodium metabisulphite on the growth and OTA production of Aspergillus carbonarius isolated from Greek wine grapes.

The purpose of the present study was to develop a modelling approach to quantify the effect of temperature (15-38 °C), a(w) (0.88-0.98) and sodium metabisulphite (NaMBS) concentration (0-200 mg L(-1)) on the growth and OTA production of Aspergillus carbonarius on a Grape Juice based Medium (GJM).

Effect of water activity, temperature, and mixed fungal spore interactions on ochratoxin A production by Aspergillus carbonarius.

The purpose of this work was to investigate the potential of two nontoxigenic Aspergillus section Nigri species (Aspergillus tubingensis and Aspergillus japonicus) to influence the in vitro ochratoxin A (OTA) production of three toxigenic Aspergillus carbonarius isolates (Ac-28, Ac-29, and Ac-33) from Greek vineyards of different geographical areas. OTA accumulation was evaluated by inoculation of 0:100, 25:75, 50:50, 75:25, and 100:0 ratios of mixed spore suspensions on a synthetic grape juice medium for up to 28 days at different temperatures (15, 20, and 25°C), water activity (aw) levels (0.95 and 0.

Effect of interaction between Aspergillus carbonarius and non-ochratoxigenic grape-associated fungal isolates on growth and ochratoxin A production at different water activities and temperatures.

The effect of water activity (0.90, 0.94, and 0.