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蛋白质和氨基酸存在于整个生物界中,是一切生物的普通成分,它们几乎构成所有多细胞动物和微生物干重的一半(Florkin,1949),但在高等植物中含量较少。蛋白质除了是生物的软组织成分外,也是骨髂、贝壳、毛发和一切几丁质(chitious)的成分。这些物质在地球表面上每年产量是巨大的,因此,它们在地质体中的存在、分布和命运,已成为有机地球化学的重要研究课题。
Proteins and amino acids, which are present in the entire organism and are common components of all living organisms, constitute almost half the dry weight of all multicellular animals and microorganisms (Florkin, 1949), but are less abundant in higher plants. Proteins, in addition to the soft tissue components of the organism, are also components of the bony ilium, shells, hair, and all chimps. The annual output of these substances on the Earth’s surface is huge. Therefore, their existence, distribution and destiny in geological bodies have become important research topics in organic geochemistry.