期刊
BIOLOGICAL TRACE ELEMENT RESEARCH
卷 199, 期 1, 页码 382-388出版社
HUMANA PRESS INC
DOI: 10.1007/s12011-020-02151-6
关键词
Tofu; Essential elements; Dietary intake; Organic crop
Tofu, a commonly consumed soybean product, contains essential elements such as copper, iron, and sodium, with flavoured tofu having the highest content. This makes tofu an important source of essential elements, especially in diets where meat is avoided.
Tofu is one of the most consumed soybean products. Currently, tofu is consumed in vegan and vegetarian diets to avoid meat. However, it is necessary to determine the content of essential elements to assess the dietary intake. Essential elements (Na, K, Mg, Ca, Mn, Zn, Fe, Cu, Mo, Co) were determined in 130 samples of tofu by ICP-OES (inductively coupled plasma optical emission spectroscopy). The highest element content was found in flavoured tofu; the most notable were Na (2519 mg/kg wet weight) and Fe (19.5 mg/kg ww). Consumption of 200 g/day of flavoured tofu by adults would mean a high contribution of Cu (46.9% women, 38.1% men), Fe (55.7% women, 65.0% men) and Na (25.2% adults) to its AI (adequate intakes) sets by the EFSA (European Food Safety Authority). Natural tofu would mean a remarkably Mn contribution (50% adults) to the AI. Tofu could be an important source of essential elements such as Mg, Mn, Na, Cu and Fe.
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