洗浄に関する研究 (第14報) : 天然汚こう成分の季節による相違ならびに洗浄力起ホウ力に対する影響

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By analyzing natural soil components adherred to collars and undershirts which were worn and soiled in each season, the authors investigated seasonal changes of natural soil components and influence to detergency and foaming.<BR>The results is as follows.<BR>1) The amount of the soil on worn undershirts in summer season is about 1% o.w.f., which is one half of that in winter season, and the soil contains less triglyserides and much nitrogen compounds and sodium chloride. On the other hand, no difference was observed between the soils of spring and autumn season.<BR>2) It was found that the soil of summer season was easier to remove with detergent than that of winter season.<BR>3) No difference was observed on foaming property in the soil of each season. This seems to come from no difference recognized in the amount of fatty acids and squalene in the soil of each season, which will give remarkable effect on foaming property.
社団法人日本油化学会の論文