Contents of Nitrate and Nitrite of 9 Wild Vegetables ( Invasive Plants) in Guangdong Province

Authors QIU Heyuan

Journal Journal of Anhui Agricultural Sciences , 2008,20:36

Abstract [Objective] The aim was to provide scientific data for people''s food safety.[Method] The contents of nitrate and nitrite of 9 wild vegetables(invasive plants) collected from Chaozhou were determined by spectronhotometry.[Result] The contents of nitrate of 9 wild vegetables(invasive plants) ranged from 3.76 to 256.08 mg/kg.The content of Alternanthera philoxeroides was the highest and that of Oxalis corniculatawas the lowest.The content of nitrite of Malvastrum cormandelianum was the highest,next was Alternanther sessilis and Aster sublatus.The contents of nitrite in others were unchecked.[Conclusion] According to the evaluation standards for nitrate and nitrite pollution at home and aboard,9 wild vegetables were all the first class edible wild vegetables and they could be eaten anyway.

Species covered 喜旱莲子草 Alternanthera philoxeroides 酢浆草 Oxalis corniculata