著者

辻村 卓 荒井 京子 日笠 志津

出版者

日本ビタミン学会

雑誌

ビタミン (ISSN:0006386X)

巻号頁・発行日

vol.74, no.12, pp.579-581, 2000-12-25

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Spinach nutrient levels seem to change considerably throughout the year. In this paper, we measured the levels of proximate composition, minerals, carotene, niacin and vitamin C in spinach in spring, summer and winter. The water content in summer was significantly high (p<0.001) compared to that in other seasons, while the levels of protein and carbohydrates were low (p<0.001). Levels of lipid and ash tended to increase in spring. Mineral contents depended on the individual specificity. Vitamin content decreased in summer. In particular, the levels of niacin and vitamin C were significantly lower in summer.