Aims: To investigate the volatile fractions of 16 essential oils for activity against more common fungi causing spoilage bakery products, Eurotium amstelodami, E. herbariorum, repens, rubrum, Aspergillus flavus, A. niger and Penicillium corylophilum. Methods Results: The study applied 50 μl pure in a sterilized filter paper, were carried out at pH 6 different water levels (0·80–0·90). First, wheat flour based agar medium was used, where cinnamon leaf, clove, bay, lemongrass thyme found to...

The effects of water activity (a w , 0.994–0.90 ≡ 0.4–14.0 (–)MPa potential), temperature (4–45 °C), and pH (3.6, 5.5, 7.0), their interactions on growth isolates Fusarium moniliforme proliferatum were determined in vitro a maize extract agar medium. Growth two F. four significantly influenced by regardless solute type used (NaCl, glycerol, or glucose). However, at steady-state levels, was optimum 0.994–0.98 reduced 0.92 . Further detailed studies with one isolate (25N) (73N, 13 IN) showed...

Abstract BACKGROUND: The aim of this study was to screen the multicontamination by mycotoxins in a wide variety aromatic and/or medicinal herb samples collected Spain. Mycotoxins studied were aflatoxins (AFs), ochratoxin A (OTA), zearalenone (ZEA), deoxynivalenol (DON), T‐2 toxin (T‐2), citrinin and fumonisins (FBs). analysed ELISA after clean‐up step with multifunctional columns (AFs, ZEA, DON, FBs T‐2) or polyamide column (citrinin). RESULTS: Of 84 99% contaminated T‐2, 98% 96% AFs, 63%...

Sorghum, which is consumed in Tunisia as human food, suffers from severe colonization by several toxigenic fungi and contamination mycotoxins. The Tunisian climate characterized high temperature humidity that stimulates mold proliferation mycotoxin accumulation foodstuffs. This study investigated the effects of (15, 25 37 °C), water activity (aw, between 0.85 0.99) incubation time (7, 14, 21 28 d) on fungal growth aflatoxin B1 (AFB1) production three Aspergillus flavus isolates (8, 10 14)...

Roll-to-roll (R2R) processing on film substrates has been demonstrated to have the potential for achieving high throughput manufacturing of organic electronic systems at low cost. However, ever-growing mobile devices market accompanied by developments in information and communication technologies require performance very power operation, sometimes larger having sizes range a few metres. Organic electronics often fall short fulfilling required computing requirements most common use cases....

Deoxynivalenol (DON) is the most occurring mycotoxin in oat and oat-based products. Near-infrared hyperspectral imaging (NIR-HSI) has been proposed as a promising methodology for analysing DON contamination food industry. The present study aims to apply NIR-HSI detection kernels quantify classify naturally DON-contaminated samples. Unground ground samples were scanned by before their content was determined HPLC. data pre-treated analysed PLS regression four classification methods. efficient...

Oat and oat-based products are expected to present the highest levels of some Fusarium mycotoxins, such as T-2 HT-2 toxins. The content these trichothecenes has been increasing in oats last few years. Moreover, oat consumption is expanding, so it even more relevant control their mycotoxin at reception food feed companies. Near-infrared hyperspectral imaging (NIR-HSI) considered a promising technique for determining mycotoxins cereals because quicker, cheaper sustainable than conventional...

This study compared the effect of temperature (5-45 degrees C), water availability (water activity, aw; 0.995-0.75) and their interactions on temporal rates germination mycelial growth three mycotoxigenic strains Aspergillus ochraceus one isolate each A. flavus, niger, Penicillium aurantiogriseum P. hordei in vitro a maize extract medium. Germination was very rapid at > 0.90 aw with an almost linear increase time for all species. However, < aw, flavus were slower. The minima usually lower...

The effect of different water activities (aw, 0.968, 0.956, 0.944, 0.925) and temperature (25 degrees C 30 C) on colonization production fumonisin B1 (FB1) B2 (FB2) sterile layers maize by Fusarium proliferatum F. moniliforme isolates was determined over periods 6 weeks. Generally, both grew faster with increasing aw best at C. All three produced more FB1 than FB2 regardless or temperature. Very little were 0.925 aw, maximum 0.956 0.968 temperatures tested. Most (25N), followed (73N 131N)....

The effects of water activity (0.90-0.99 a(w)), temperature (15-37 degrees C), and their interaction on growth ochratoxin A (OTA) production by eight isolates Aspergillus carbonarius were investigated synthetic nutrient medium (SNM) with composition similar to grapes.Growth data modelled an multiple linear regression response surface models obtained. grew much faster at 30 C than the other levels tested its rate increased increasing a(w), maximum being between 0.95 0.99 a(w). In general,...