a Computational and Systems Biology Department , Rothamsted Research , Harpenden , UK.
Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2013;30(9):1493-500. doi: 10.1080/19440049.2013.805439. Epub 2013 Jul 4.
A dataset of manufacturers' measurements of acrylamide levels in 40,455 samples of fresh sliced potato crisps from 20 European countries for years 2002 to 2011 was compiled. This dataset is by far the largest ever compiled relating to acrylamide levels in potato crisps. Analysis of variance was applied to the data and showed a clear, significant downward trend for mean levels of acrylamide, from 763 ± 91.1 ng g⁻¹ (parts per billion) in 2002 to 358 ± 2.5 ng g⁻¹ in 2011; this was a decrease of 53% ± 13.5%. The yearly 95th quantile values were also subject to a clear downward trend. The effect of seasonality arising from the influence of potato storage on acrylamide levels was evident, with acrylamide in the first 6 months of the year being significantly higher than in the second 6 months. The proportion of samples containing acrylamide at a level above the indicative value of 1000 ng g⁻¹ for potato crisps introduced by the European Commission in 2011 fell from 23.8% in 2002 to 3.2% in 2011. Nevertheless, even in 2011, a small proportion of samples still contained high levels of acrylamide, with 0.2% exceeding 2000 ng g⁻¹.
编译了 2002 年至 2011 年间来自 20 个欧洲国家的 40455 个新鲜切片薯片制造商测量的丙烯酰胺水平的数据集。这个数据集是迄今为止有关薯片丙烯酰胺含量的最大数据集。对数据进行方差分析，结果表明丙烯酰胺的平均水平呈明显、显著的下降趋势，从 2002 年的 763±91.1ng g⁻¹（十亿分之几）降至 2011 年的 358±2.5ng g⁻¹；降幅为 53%±13.5%。每年的第 95 个分位数也呈明显下降趋势。由于土豆储存对丙烯酰胺水平的影响而产生的季节性影响是明显的，即当年前 6 个月的丙烯酰胺含量明显高于后 6 个月。在 2011 年欧盟委员会引入的 1000ng g⁻¹指示值以上的丙烯酰胺含量的薯片样本比例从 2002 年的 23.8%下降到 2011 年的 3.2%。尽管如此，即使在 2011 年，仍有一小部分样本含有高浓度的丙烯酰胺，其中 0.2%的丙烯酰胺含量超过 2000ng g⁻¹。
