Jensen Pia H, Strobel Bjarne W, Hansen Hans Christian B, Jacobsen Ole Stig
Department of Basic Sciences and Environment, Faculty of Life Sciences (LIFE), University of Copenhagen, Thorvaldsensvej 40, DK-1871 Frederiksberg, Denmark.
J Agric Food Chem. 2009 Apr 8;57(7):2862-7. doi: 10.1021/jf803564v.
The toxic glycoalkaloids, alpha-solanine and alpha-chaconine, are present in all parts of the potato plant and are possibly transferred to the terrestrial environment. The amounts of glycoalkaloids in plant, soil, and groundwater were followed in a potato field to investigate their distribution and fate during the season. The amount of glycoalkaloids in the plants was up to 25 kg/ha during maturity and decreased to below 0.63 kg/ha during plant senescence. The glycoalkaloids were detected in the upper soil (up to 0.6 kg/ha); this amount accounted only for a minor fraction of the amount present in the plants. Maximum glycoalkaloid concentration of 2.8 mg/kg dry weight soil was detected in September. Dissipation during winter appeared to be slow because glycoalkaloids were still present in the soil in March. No traces of glycoalkaloids were detected in the groundwater (detection limit 0.2 microg/L). From these results, the leaching potential of the glycoalkaloids is evaluated to be small.
有毒糖苷生物碱，α-茄碱和α-查茄碱，存在于马铃薯植株的各个部位，并可能转移到陆地环境中。在一块马铃薯田中跟踪了植物、土壤和地下水中糖苷生物碱的含量，以研究其在生长季节中的分布和归宿。植株中糖苷生物碱的含量在成熟时高达25千克/公顷，在植株衰老时降至0.63千克/公顷以下。在上层土壤中检测到了糖苷生物碱（高达0.6千克/公顷）；这一含量仅占植株中糖苷生物碱含量的一小部分。9月检测到土壤干重中糖苷生物碱的最大浓度为2.8毫克/千克。冬季消散似乎缓慢，因为3月时土壤中仍存在糖苷生物碱。地下水中未检测到糖苷生物碱的痕迹（检测限为0.2微克/升）。根据这些结果，评估糖苷生物碱的淋溶潜力较小。
