ハトムギのミネラル

Minerals inJob's tears

佐藤 明

赤井 達男

今村 経明

広島大学生物生産学部紀要

Journal of the Faculty of Applied Biological Science, Hiroshima University

ミネラルの面からハトムギの食品価値を探るために、偏光ゼーマン原子吸光光度計を用いて12種の元素量を測定し、米、小麦、大豆と比較した。灰分は米の約2倍、小麦の約1.5倍であった。12種の元素はK、Mg、 Fe、Zn、Ca、Mn、Na、Cu、Mo、Ni、Cr、Coの順に多く含まれていた。対照とした3食品に比べてMoとZnが多く、Caが少なかった。とくにZnは、日常摂取する植物性食品では最も多いものの一つである大豆よりも多かった。乾物100g中の各元素は、K 513mg.Mg 271mg、Fe 7.01mg、Zn 6.76mg、Ca 4.39mg、Mn 2.91mg、Na 0.67mg、Cu 502μg、Mo 243μg、Ni 64.3μg、Cr 51.7μg、Co 4.00μgであった。精白すればこれら元素の一部はふすまへ移るが、その程度はMnに顕著で、逆にCrの移行は少なかった。そしてZnの移行も比較的少なかった。

Individuality of Job's tears in minerals-pattern was examined with a polarized Zeeman absorption spectrophotometer, in order to extend the food value of this material. Any evaluation based on such view point has not been reported. Judging the individuality was done by comparison of ash composition of Job's tears to those of rice, wheat, and soybean. Elements investigated were K, Mg, Fe, Zn, Ca, Mn, Na, Cu, Mo, Ni, Cr, and Co. Each amount was as much as the above order. As a whole, the ash composition of Job's tears was superior to that of either rice or wheat. Severally consideration on the constituents of ash of each food showed that a superior point of Job's tears was found on the higher contents of Mo and Zn. The Mo content was 243μg/100g of dry matter and the level was about 3.5 times as much as that of rice, 5.8 times that of wheat, and 6.6 times that of soybean. Zn content was 6.76 mg/100g of dry matter and it was higher level than the content in soybean which is known as an excellent source of Zn among cereals and vegetables. Ca in Job's tears was 1.7 times as much as that of rice, while the level was 1/20 to that of soybean. Distribution of the twelve elements in the grain of Job's tears was also examined. Ash content of the germ was 4.8 times as much as that of the whole grain, but the contents of Cr, Mo, and Ca were not so much. Contrary, Co concentrated in this part. Element which concentrated in the milled grain was Mo alone.

農業 [ 610 ]

日本語

広島大学生物生産学部

農林水産研究情報センター

[ISSN] 0387-7647

[NCID] AN00213621