| effect of temperature and water activity on growth and ochratoxin a production by australian aspergillus carbonarius and a. niger isolates on a simulated grape juice medium. | the effect of water activity (0.92, 0.95, 0.965 and 0.98) and temperature (15 degrees c, 25 degrees c, 30 degrees c and 35 degrees c) on growth rate and ochratoxin a (oa) production by five strains of aspergillus carbonarius and two strains of a. niger isolated from australian vineyards was characterised on a synthetic grape juice medium. maximum growth for a. carbonarius occurred at ca 0.965 aw and 30 degrees c, and for a. niger, at ca 0.98 aw and 35 degrees c. the optimum temperature for oa pr ... | 2006 | 16824635 |