scholarly journals Water activity and temperature effects on growth and mycotoxin production byAlternaria alternatastrains isolated from Malbec wine grapes

2017 ◽  
Vol 122 (2) ◽  
pp. 481-492 ◽  
Author(s):  
L.P. Prendes ◽  
V.G.L. Zachetti ◽  
A. Pereyra ◽  
V.I. Morata de Ambrosini ◽  
M.L. Ramirez
Keyword(s):  
Water Activity ◽  
Temperature Effects ◽  
Wine Grapes ◽  
Mycotoxin Production

scholarly journals Effect of Temperature, Water Activity and Carbon Dioxide on Fungal Growth and Mycotoxin Production of Acclimatised Isolates of Fusarium verticillioides and F. graminearum

Toxins ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 478 ◽  
Author(s):  
Ladi Peter Mshelia ◽  
Jinap Selamat ◽  
Nik Iskandar Putra Samsudin ◽  
Mohd Y. Rafii ◽  
Noor-Azira Abdul Mutalib ◽  
...  
Keyword(s):  
Climate Change ◽  
Carbon Dioxide ◽  
Elevated Temperature ◽  
Water Activity ◽  
Fusarium Verticillioides ◽  
Fumonisin B1 ◽  
Fungal Growth ◽  
Effect Of Temperature ◽  
Mycotoxin Production ◽  
Co2 Levels

Climate change is primarily manifested by elevated temperature and carbon dioxide (CO2) levels and is projected to provide suitable cultivation grounds for pests and pathogens in the otherwise unsuitable regions. The impacts of climate change have been predicted in many parts of the world, which could threaten global food safety and food security. The aim of the present work was therefore to examine the interacting effects of water activity (aw) (0.92, 0.95, 0.98 aw), CO2 (400, 800, 1200 ppm) and temperature (30, 35 °C and 30, 33 °C for Fusarium verticillioides and F. graminearum, respectively) on fungal growth and mycotoxin production of acclimatised isolates of F. verticillioides and F. graminearum isolated from maize. To determine fungal growth, the colony diameters were measured on days 1, 3, 5, and 7. The mycotoxins produced were quantified using a quadrupole-time-of-flight mass spectrometer (QTOF-MS) combined with ultra-high-performance liquid chromatography (UHPLC) system. For F. verticillioides, the optimum conditions for growth of fumonisin B1 (FB1), and fumonisin B2 (FB2) were 30 °C + 0.98 aw + 400 ppm CO2. These conditions were also optimum for F. graminearum growth, and zearalenone (ZEA) and deoxynivalenol (DON) production. Since 30 °C and 400 ppm CO2 were the baseline treatments, it was hence concluded that the elevated temperature and CO2 levels tested did not seem to significantly impact fungal growth and mycotoxin production of acclimatised Fusarium isolates. To the best of our knowledge thus far, the present work described for the first time the effects of simulated climate change conditions on fungal growth and mycotoxin production of acclimatised isolates of F. verticillioides and F. graminearum.

Water Activity and Temperature Effects on Fungal Growth and Ochratoxin A Production by Ochratoxigenic Aspergillus carbonarius Isolated from Tunisian Grapes

2010 ◽  
Vol 75 (2) ◽  
pp. M89-M97 ◽  
Author(s):  
Salma Lasram ◽  
Souheib Oueslati ◽  
Ana Valero ◽  
Sonia Marin ◽  
Abdelwahed Ghorbel ◽  
...  
Keyword(s):  
Ochratoxin A ◽  
Water Activity ◽  
Temperature Effects ◽  
Fungal Growth ◽  
Aspergillus Carbonarius

Influence of water activity and temperature on growth and mycotoxin production by Alternaria alternata on irradiated soya beans

2011 ◽  
Vol 149 (2) ◽  
pp. 127-132 ◽  
Author(s):  
Maria Silvina Oviedo ◽  
Maria Laura Ramirez ◽  
Germán Gustavo Barros ◽  
Sofia Noemi Chulze
Keyword(s):  
Water Activity ◽  
Alternaria Alternata ◽  
Mycotoxin Production ◽  
Influence Of Water

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

2015 ◽  
Vol 49 ◽  
pp. 12-22 ◽  
Author(s):  
Angelos-Gerasimos Ioannidis ◽  
Efstathia A. Kogkaki ◽  
Pantelis I. Natskoulis ◽  
George-John E. Nychas ◽  
Efstathios Z. Panagou
Keyword(s):  
Water Activity ◽  
Aspergillus Carbonarius ◽  
Wine Grapes ◽  
Influence Of Temperature ◽  
Sodium Metabisulphite ◽  
Temperature Water
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