On the Mineral Components in Refuse portion of Vegetables

概要

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Most of domestic wastes are rubbish released from kitchen. When these wastes are burn, carbon dioxide, ash and dioxine etc. are produced. In order to prevent the pollution of stmosphere, the kitchen wastes must be dumped as little amounts as possible. most of these kitchen wastes are refuse portion of vegetables.<BR>Therefore, those utilization of wastes is very important for our life. In this report, various minerals contents in the non-utilized portion of vegetables were assayed. Cauliflower, Broccoli, Parsley, Cabbage and Jew's Marrou were ashed at 550°C by using electric furnace. These ash fractions were dissolved in hydrochloric acid and filtrated. Several kinds of minerals, calcium, magnesium, sodium, potassium, iron, zinc, copper, manganese and strontium, were measured by atomic absorption spectrophotometry. The amount of manganese in eatable portion on all samples was larger than that in non-utilized portion and the amount of potassium in non-utilized portion on all of samples, except Broccoli was larger than those in edible portion.
日本食生活学会の論文