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在1992年9月6日北京举办的“β-胡萝卜素及抗氧化维生素在预防疾病上的功能”科学研讨会上,中美两国科学家围绕主题作了广泛的交流,并建议大众每人每日食入β-胡萝卜素6毫克。
At the Scientific Symposium on the Function of β-Carotene and Antioxidant Vitamins in Preventing Diseases held on September 6, 1992 in Beijing, scientists from China and the United States made extensive exchanges on the theme and suggested to the general public Solar eclipse β-carotene 6 mg.