Aflatoxin contamination of nuts is an increasing concern to the consumer's health. Portugal is a big producer of almonds, but there is no scientific knowledge on the safety of those nuts, in terms of mycotoxins. The aim of this paper was to study the incidence of aflatoxigenic fungi and aflatoxin contamination of 21 samples of Portuguese almonds, and its evolution throughout the various stages ...

An a-D-galactosidase (EC 3.2.1.22) and a fl-D-mannanase (EC 3.2.1.78), which were secreted into the growth medium when Aspergillus tamarii was cultivated in the presence of galactomannan, were purified by a procedure including chromatography on hydroxyapatite and DEAE-cellulose columns. Each of these enzymes showed a single protein band, corresponding to their respective activities, on polyacry...

Enzyme cocktails can alter the lignin and hemicellulose content in wood cell walls, improving bleaching process during pulp production offsetting need for toxic chemicals. In this study, brown was biobleached with a mixture of crude fungal extracts rich xylanase laccase, respectively produced from Aspergillus tamarii Kita Trametes versicolor on waste materials. The optimal conditions biobleachi...