Mineral Contents in Soybeans with Different Cooking Methods
2017
Kim, S.Y., Korea Food Research Institute, Wanju, Republic of Korea | Hwang, J., Korea Food Research Institute, Wanju, Republic of Korea | Park, J.S., Korea Food Research Institute, Wanju, Republic of Korea | Choi, Y., Functional Food and Nutrition Division, Rural Development Administration, Jeonju, Republic of Korea | Nam, J.S., Suwon Women's College, Suwon, Republic of Korea | Lee, J.H., Suwon Women's College, Suwon, Republic of Korea | Seo, D., Korea Food Research Institute, Wanju, Republic of Korea
The purpose of this study was to compare the of ash and minerals contents in different types of soybeans (Baektae, Seoritae, Heuk Tae and Seomoktae) with different cooking methods. Raw, boiled and pan-fried soybean samples were prepared by the Rural Development Administration. Samples were digested by using a microwave and analyzed using ICP-OES and ICP-MS for determining the ash and minerals contents. Ash content in four raw soybeans ranged from 5.07 to 5.59 g/100g. There was no significant difference in the ash contents in raw and pan-fried soybeans (p greater tahn 0.05). However, the ash content of boiled soybeans was 9 to 14% lower than that of raw soybeans (p less than 0.05). The minerals contents of Baektae and Seomoktae were high and the major minerals of various soybeans were K, P, Mg, and Ca, which accounted for ash 60.80 - 65.61%, 20.73 - 24.26%, 6.90 - 8.46% and 5.79'8.60%, respectively. The mineral contents of soybeans were significantly different depending on the type of cultivar (p less tahn 0.05), but the tendency was not constant. Because the process of soaking and boiling of soybeans made the soluble minerals elute, the ash and mineral contents were reduced. And process of pan-frying of soybeans make Because process of soaking and boiling of soybeans make soluble minerals elute (Ed- this section is very confused and seems to have 2 sentences combined: please check your intended meaning), the ash and mineral contents were reduced. As the soybeans are cooked by pan-frying, the water in the soybeans is evaporated and the mineral content is concentrated or kept constant. These results can serve as the basic data of mineral content during processing and cooking of soybeans.
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