著者

藤本 恵子 池本 敦 FUJIMOTO Keiko IKEMOTO Atsushi

出版者

秋田大学教育文化学部

雑誌

秋田大学教育文化学部研究紀要 自然科学 (ISSN:24334960)

巻号頁・発行日

no.75, pp.1-11, 2020-03-01

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The edible wild plants were anciently important food materials as sources of nutrients such as vitamins but their utilization has been decreasing in the present day. To elucidate the utilization of edible wild plants in Akita prefecture of Japan, we performed questionary survey targeting at the inhabitants of the wide age age group. Elatostema umbellatum (“Mizu”), Osmunda japonica (Asian royal fern, "Zenmai") and Oenanthe javanica, (Java waterdropwort. “Seri”) were eaten well most. Laportea cuspidate (“Aiko”), Parasenecio hastatus (“Honna”) and Parasenecio delphiniifolius (“Shidoke”) were utilized well in Tohoku region and their rate of experiences of eating exceeded 70%. It is observed that Chenopodium album (white goosefoot, “Shiroza”) grows on the roadside in Japan, but 82.4% of the inhabitants did not know that they were edible. We also performed questionary survey in Bangladesh, where Chenopodium album is cultivated and eaten well. In our investigation, all Bangladeshi had the experiences of eating and it was used as a materials of the traditional cuisine such as sauteed vegetables, bhorta and curry. The values of Chenopodium album as foods in emergency and its availabilities as the teaching materials for safeguard against disaster were also discussed.

著者

池本 敦 IKEMOTO Atsushi

出版者

秋田大学教育文化学部

雑誌

秋田大学教育文化学部研究紀要 人文科学・社会科学自然科学 (ISSN:13485296)

巻号頁・発行日

no.69, pp.121-129, 2014-03-31

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Omega 3 (n-3) polyunsaturated fatty acids such as α-linolenic acid, docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) show many beneficial effects for human health. However, omega 6 (n-6) fatty acids such as linoleic acid and arachidonic acid have the physiological effects opposite to omega 3 fatty acids. Therefore the essential fatty acid balance (n-6/n-3 ratio) is an important factor to evaluate the nutritional effect of dietary fats and oils. In this study, we collected health foods and dietary supplements containing omega 3 fatty acid and analyzed fatty acid composition and essential fatty acid n-6/n-3 balance. Approximately 200 kinds of products were available at the local market and we classified these products in four types (capsule type, drink type, edible oil type, and natural food type). The omega 3 fatty acid contents were high and omega 6 contents were low in the capsule type (DHA/EPA type). On the other hand, the omega 6 contents were high and omega 3 contents were low in the capsule type (other ingredients mixture/other fatty acids mixture type). The drink type showed effective fatty acid balances, but the absolute contents of omega 3 were low. The products except the perilla oil in the edible oil type had higher amount of omega 6 fatty acids. The levels of DHA and EPA were relatively low and the levels of omega 6 fatty acids such as linoleic acid were high in the natural food type (DHA/EPA type). In contrast, contents of linoleic acid were relatively low and contents of α-linolenic acid were high in the food type (α-linolenic acid type). The n-6/n-3 ratio of the Japanese average meal was 4.942. Essential fatty acid balance was improved most effectively using the products in the capsule type (DHA/EPA type).