美国癌症协会(ACS)曾提出蔬菜搭配的“彩虹原则”:蔬果的色彩大致有蓝、紫、绿、白、黄、橙及红等7色,多彩犹如雨后彩虹,而各种颜色蔬果的营养价值皆不尽相同,所以都应均衡食用。另外,在食用量上,“蔬果579”原则指出:2至6岁儿童,每天应摄取5份新鲜蔬果;6岁以上儿童及女性,每天应摄取7份蔬果;青少 The American Cancer Society (ACS) has proposed vegetable matching “Rainbow Principle ”: fruits and vegetables are roughly seven colors of blue, purple, green, white, yellow, orange and red, colorful like rain after the rainbow, and a variety of colors The nutritional value of fruits and vegetables are different, so should be balanced consumption. In addition, the amount of consumption, “fruits and vegetables 579 ” principle states: 2 to 6-year-old children, daily intake of 5 copies of fresh fruits and vegetables; children over 6 years of age and women, daily intake of 7 fruits and vegetables;