Mroczek E, Konieczny P, Kleiber T, Waśkiewicz A
a Department Food Quality Management , Poznań University of Life Sciences , Poznań , Poland.
Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2014;31(8):1399-405. doi: 10.1080/19440049.2014.926401. Epub 2014 Jun 11.
The aim was to assess acrylamide monomer (AMD) uptake by hydroponically grown lettuce. Lettuce was cultivated by applying plant tissue testing in a recycled system by the use of nutrient solutions prepared with two water-soluble flocculants F3 and F4 containing 176 and 763 mg kg(-1) of AMD, respectively. The effects on growth, fresh weight and plant leaf quality were evaluated by comparing these treatments and one control standard nutrient solution typically recommended for lettuce hydroponic cultivation. To assess the nutritional status of lettuce, samples were collected and lyophilised before determination of the selected micro- and macro-element contents. An HPLC with photodiode array detector method was applied to determine AMD in both selected flocculants and dried plant samples. Results show that lettuces cultivated under the conditions described above absorb AMD from nutrient solutions into their leaves. The AMD presence in recycled nutrient solutions has a negative influence on the growth of lettuce, reducing their average fresh weight and average number of leaves. The study confirmed that the problem of AMD mobility and its accumulation risk in plants should to be an important topic with respect to safe polyacrylamide (PAM) handling in the agro food area.
目的是评估水培生菜对丙烯酰胺单体（AMD）的吸收情况。通过在循环系统中应用植物组织检测方法，使用分别含有176和763 mg kg⁻¹ AMD的两种水溶性絮凝剂F3和F4配制的营养液来种植生菜。通过比较这些处理方法与一种通常推荐用于生菜水培种植的对照标准营养液，评估其对生菜生长、鲜重和叶片质量的影响。为了评估生菜的营养状况，在测定所选微量元素和常量元素含量之前，采集样本并进行冻干处理。采用配备光电二极管阵列检测器的高效液相色谱法测定所选絮凝剂和干燥植物样本中的AMD。结果表明，在上述条件下种植的生菜会将营养液中的AMD吸收到叶片中。循环营养液中AMD的存在对生菜生长有负面影响，降低了它们的平均鲜重和平均叶片数。该研究证实，就农业食品领域安全处理聚丙烯酰胺（PAM）而言，AMD在植物中的迁移问题及其积累风险应成为一个重要课题。
