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Sterigmatocystin Occurrence in Paddy and Processed Rice Produced in Italy in the Years 2014–2015 and Distribution in Milled Rice Fractions

机译：2014-2015年意大利生产的稻米和加工稻中的硬皮囊藻毒素的发生率以及碾米部分的分布

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摘要

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 μg·kg−1. 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 μg·kg−1; for parboiled rice, the incidence was 90.9% and the maximum level was 1.09 μg·kg−1. 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.
机译：调查了意大利生产的稻米和加工大米样品中的菌丝体毒素（STC）的发生情况。提取和纯化后，使用HPLC-MS / MS分析STC。在所有水稻样品中检测到STC（n = 49），范围为0.29–15.85μg·kg -1 。至于大米，在糙米和半熟米中发现了广泛的污染。所有糙米样品均被污染0.12至1.32μg·kg -1 ；熟米的发病率为90.9％，最高含量为1.09μg·kg -1 。白米中的污染显着降低（p <0.01）。通过脱壳和精炼过程获得的不同大米部分的STC分布进行了评估。脱壳后，糙米中剩余的STC百分比在21.2％–30.8％范围内。从糙米到白米的抛光过程进一步减少了污染。白米中残留的STC含量是水稻中的STC含量的2.2％–8.3％。

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