在美国,马齿苋是一种麻烦的杂草.但最近发现,马齿苋也是脂肪酸、维生素E及其它重要营养物质的丰富来源,因而成为新蔬菜的主要候补者.马齿苋约有200种,科学家们集中研究一年生品种——P.oleracea.这种马齿苋,在世界各地和美国50个州都可发现,它以生命力强而著称,甚至可在有少量水的劣质土壤里生长,并抗病,它的种子可以存活40年.美国农业科研局的Helen A.Norman等研究人员,已经开始对P.oleracea进行广泛的研究,因为它含有很高Ω—3脂肪酸.这些与减少心脏病,有益于健康的营养物质是制造细胞膜所必需的.人类不能有效地制造Ω—3脂肪酸,必须直接从食物中获得.在高等食物中,这种脂肪酸的含量也较低,但马齿苋则例外.野草科学实验室的Norman、全美种质资源实验室的James A.Duke、遗传、营养、卫生中心的Artemis P.Simopoulos及科学家James E.Giuaspy都已证实,马齿苋(P.oleraced)比所研究的任何其它绿叶蔬菜含有的Ω—3脂肪酸(又称α—亚油酸)都多.马齿苋可以煮着吃或生吃.100g马齿苋中含有大约300—400mg的α—亚油酸,比菠菜高10多倍.他 Purslane is a cumbersome weed in the United States, but it has recently been discovered that Purslane is also a rich source of fatty acids, vitamin E and other important nutrients that make it a prime candidate for new vegetables. Species, scientists focus on the annual species - P. oleracea. This purslane, found in 50 countries around the world and the United States 50, it is known for its vitality, and even grow in poor soil with a small amount of water, And its seeds can survive for 40 years. Researchers from the Agricultural Research Service of the United States, Helen A. Norman, have started extensive research on P. oleracea because of its high omega-3 fatty acids, Diseases and wholesome nutrients are required to make the cell membrane.Human’s inability to efficiently manufacture omega-3 fatty acids must be obtained directly from foodstuffs, and in higher foods this fatty acid content is also low, but purslane The exceptions are Norman of the Weed Science Laboratory, James A. Duke of the National Germplasm Resources Laboratory, Artemis P. Simopoulos of the Genetics, Nutrition and Health Center, and James E. Giuaspy, a scientist at the National Germplasm Resources Laboratory, both of whom P.oleraced ) Than any of the other green leafy vegetables omega-3 fatty acids (also known as a-linoleic acid) studied. Purslane can be boiled or eaten raw .100g Purslane contains about 300-400mg of alpha - Linoleic acid, 10 times higher than spinach