同位素标记技术的应用,使有关物质吸收代谢及生物转化的研究取得了相当瞩目的进展。但由于放射性同位素具有潜在的放射性危害,其应用受到了很大的限制,尤其是在婴幼儿、孕妇的研究应用中。因此寻求稳定同位素替代放射性同位素成为科学家新的关注点,天然的稳定同位素~(13)C 更是近年来颇受关注。1973年比利时的一家实验室第一个发现玉米制成 The application of isotope labeling technology has made considerable progress in the research on the absorption, metabolism and biotransformation of related substances. However, due to the potential radioactive hazards of radioisotopes, its application has been greatly limited, especially in infants and young children, pregnant women research applications. Therefore, the search for stable isotopes to replace radioisotopes has become a new concern of scientists. The natural stable isotope13C has drawn much attention in recent years. In 1973, a laboratory in Belgium found the first corn