The chemical analysis of lipids remains from Jomon pottery

我们已经报道了与甘油或脂肪酸相比，被困在陶器中的甾醇具有很高的稳定性。在此基础上，从吸附在陶器不同部位的甾醇的回收入手，讨论了绳纹浅盘和深盘的使用。并将绳纹饮食与现代饮食进行了比较。虽然陶器碎片似乎没有黏附物，但它们都含有固醇。当从表面（直接从碎片中提取）和核心（直接从粉碎后的碎片中提取）回收甾醇时，发现更多的甾醇留在核心。提取的标准方法是将表面磨薄，按原样提取碎片。然而，目前的研究结果表明，仍有大量的脂质未被真正的方法提取。这个浅盘子底部的总甾醇含量高于陶器的主体或顶部。另一方面，在深盘中，身体和底部比顶部发现了更多的总甾醇。从考古学的角度来看，浅盘是用来盛食物的，而深盘是用来做饭的。目前的研究结果支持了考古学的观点，因为当食物放在盘子上时，脂肪会积聚在底部，当食物在汤中煮熟时，脂肪会漂浮到身体的上部，并且在喝汤时留在底部。在浅盘和深盘之间，以及表面和核心之间，植物甾醇与胆固醇的比率没有统计学差异。这些结果表明，浅盘和深盘中都含有相似的食物。绳纹日粮中植物总甾醇/胆固醇的平均值与现代日粮相似，表明绳纹日粮与现代日粮具有可比性。

We have reported the high stability of sterols trapped within pottery compared to glycerides or fatty acids. Based on this finding, the usage of Jomon (Kasori E) shallow and deep dishes were discussed from the recovery of sterols adsorbed to the different parts of pottery. In addition, Jomon diet was compared with present diet.Although pottery shards seemed free of adhered materials, all contained sterols. When sterols were recovered from the surface (extracted from shards directly) as well as the core (extracted from pulverized shards after direct extraction), more sterols were found to remain at the core. The standard method of extraction is to thinly grind the surface and extract the shards as is. However, present finding indicated that large amount of lipids still remain unextracted under authentic method.The shallow dish contained more total sterol at the base than the body or the top of the pottery. On the other hand, more total sterol was found at the body and the base than the top in the deep dish. Archaeologically, the shallow dish is defined to serve food, where as the deep dish is used for cooking. Present findings support archaeological viewpoint since when food is served on a dish, fat will accumulate at the bottom, and when food is cooked in a soup, fat will float to the upper section of the body as well as remain at the bottom when soup is consumed. There were no statistical differences in the ratio of total plant sterol to cholesterol between shallow and deep dishes or the surface and the core. These results indicate that similar food was contained in both shallow and deep dishes.The average value of total plant sterol to cholesterol ratio was similar to that of present meal, indicating Jomon diet was comparable to present diet.