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Old 07-24-2011, 04:03 PM   #1
skyccnicke
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Default 洗菜去农药先用碱水泡

  大多数有机磷类杀虫剂在碱性环境下,光波炉,可迅速分解,因此,如果担心买回来的蔬菜残留农药洗不干净,可以在500毫升的清水中加入食用碱5~10 克配制成碱水,将初步冲洗后的蔬菜置入碱水中,光波炉和电磁炉的区别,根据菜量多少配足碱水,浸泡5~15分钟后,红外线光波炉,再用清水冲洗即可,这样重复洗涤3次效果更好。而某些农药在存放过程中会随着时间的推移缓慢分解为对人体 无害的物质。如果条件允许,最好将某些适合于储存保管的蔬菜存放一段时间(10~15天),食用前再清洗, 可以更好地去除农药。
  芹菜、圆白菜、青椒、豆角等一般使用氨基甲酸酯类杀虫剂,这些杀虫剂会随着温度升高而加快分解速度,因 此,可以将清洗后的蔬菜放在沸水中焯2~5分钟后立即捞出,然后用清水洗1~2遍后,即可置于锅中烹饪成菜 肴。
  而绿叶类蔬菜,如菠菜、生菜、小白菜等,先用清水冲洗掉表面的污物,再用清水漫过蔬菜部分5厘米左右, 以流水浸泡不少于10分钟,这样可以增加农药的溶出。如此清洗浸泡2~3次,基本上可去除蔬菜上绝大部分残 留的农药成分。
  需要注意的是,临近节假日,某些人为了抢收蔬菜,往往加重农药的喷洒剂量,光波炉团购,这时不要大量购买,可选购含农药较少或对病虫害抵抗力较强的蔬菜,如具有特殊气味的洋葱、大蒜等;当发现 蔬菜表面有药斑,或有不正常的刺鼻化学药剂味道时,就不要选购;而连续性采收的农作物(可长期而连续多次采 收),如菜豆、豌豆、韭菜花、小黄瓜、芥蓝等,需要长期且连续地喷洒农药,更应注意清洗,以降低其农药残留 量。
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