Abstract
The occurrence of sterigmatocystin (STC) in paddy and processed rice samples produced
in Italy was surveyed. After extraction and purification, STC was analysed using HPLC-MS/MS.
STC was detected in all paddy rice samples (n = 49), in the range 0.29–15.85 gkg1. As regards
processed rice, a widespread contamination was found in brown and parboiled rice. All the brown
rice samples were contaminated between 0.12 and 1.32 gkg1; for parboiled rice, the incidence was
90.9% and the maximum level was 1.09 gkg1. The contamination in white rice was significantly
lower (p < 0.01). The STC distribution in different rice fractions, obtained by the de-hulling and
polishing processes, was evaluated. After de-hulling, the STC percentage remaining in brown rice
was in the range 21.2%–30.8%. The polishing process, from brown to white rice, caused another
remarkable decrease of contamination; the STC remaining in white rice was 2.2%–8.3% of the amount
found in paddy rice.
Original language | English |
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Pages (from-to) | 85-96 |
Number of pages | 11 |
Journal | Toxins |
Volume | 2017 |
DOIs | |
Publication status | Published - 2016 |
Keywords
- paddy rice
- processed rice
- sterigmatocystin