Optimisation of Retsina Wine Quality: Effects of Resin Concentration, Yeast Strain, and Oak Chip Type.

Retsina, Greece's most renowned traditional wine, has been produced for millennia, with archaeological and historical evidence supporting its legacy. It is legally defined as wine made exclusively in Greece using grape must infused with Aleppo pine resin (). This study examines the effects of varying resin concentrations (0.

Evaluation of Plant Origin Essential Oils as Herbal Biocides for the Protection of Caves Belonging to Natural and Cultural Heritage Sites.

The present study concerns the serious issue of biodeterioration of the caves belonging to natural and cultural heritage sites due to the development of various microorganisms. Thus, a series of 18 essential oils (EOs) extracted from various Greek plants were evaluated in vitro (concentrations of 0.1, 0.

Antioxidant Profiles of Vitis vinifera L. and Salvia triloba L. Leaves Using High-Energy Extraction Methodologies.

The profiles of Vitis vinifera L. and Salvia triloba L. leaf extracts have been studied via photometric assays on the basis of their total phenolic and flavonoid content as well as of their radical scavenging and antioxidant activities.

Evaluating the efficacy of turbimetric measurements as a rapid screening technique to assess fungal susceptibility to antimicrobial compounds as exemplified by the use of sodium metabisulfite.

The in vitro susceptibility to sodium metabisulphite (NaMBS) was investigated in 10 different food spoilage filamentous fungi, namely Aspergillus flavus, A. carbonarius, A. niger, A.

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.

Comparative study of growth responses and screening of inter-specific OTA production kinetics by A. carbonarius isolated from grapes.

The aim of this work was to assess OchratoxinA (OTA) production of different Aspergillus carbonarius isolates, evaluate their growth profile through different growth measurements, and reveal any underlying correlation between them. Ten different isolates of A. carbonarius isolated from Greek vineyards located in different geographical regions were examined in vitro for their OTA production potential after an incubation period of up to 11 days.

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.

Biodiversity and ITS-RFLP characterisation of Aspergillus section Nigri isolates in grapes from four traditional grape-producing areas in Greece.

A study on the occurrence of Aspergillus section Nigri species on grapes from four traditional grape-producing areas in Greece during the 2011/2012 vintage, and their capability to produce OTA was conducted. One hundred and twenty-eight black aspergilli isolates were characterised at the species level initially by the use of morphological criteria in accordance with appropriate keys, followed by molecular characterisation performed with Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP) of the 5.8 ribosomal RNA gene Internal Transcribed Spacer region (5.

A survey of ochratoxin A occurence in Greek wines.

A total of 150 wines, including 123 dry wines (64 red, 49 white and 10 rosé) and 27 dessert wines (14 red and 13 white), were obtained from various viticulture and oenological practices across Greece during the period 1999-2006 and analyzed for ochratoxin a (OTA) using immunoaffinity clean-up and HPLC with fluorescence detection. There was a high frequency of OTA in commercially available wines (69% positive samples). However, the level of contamination was relatively low, with only one sample marginally reaching the EU permitted maximum level (2.

Impact of water activity and temperature on growth and ochratoxin A production of two Aspergillus carbonarius isolates from wine grapes in Greece.

The aim of this study was to determine the effects of water activity (a(w); 0.85 to 0.98) and temperature (10 to 40 degrees C) on the radial growth rate and ochratoxin A (OA) production of two Aspergillus carbonarius isolates in vitro.