期刊
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
卷 48, 期 -, 页码 81-87出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jfca.2016.02.008
关键词
Rice; ICP-MS; Essential elements; Non-essential/toxic elements; Dietary intake; Food composition; Food analysis
资金
- European Union (FEDER funds through COMPETE)
- National Funds (FCT) [Pest-C/EQB/LA0006/2013]
- European Union (FEDER funds) [NORTE-07-0124-FEDER-000069]
Eighty-six rice samples, representing the most common rice brands sold in Portuguese and Spanish markets (either locally produced or imported), were analyzed for their content of 35 essential and non-essential/toxic elements using inductively coupled plasma-mass spectrometry (ICP-MS). The mean content of essential elements was: 1189 mg/kg (P), 746 mg/kg (K), 294 mg/kg (Mg), 84.7 mg/Kg (Ca), 13.3 mg/kg (Zn), 8.8 mg/kg (Na), 8.3 mg/kg (Mn), 7.5 mg/kg (Fe), 1.9 mg/kg (Cu), 0.55 mg/kg (Mo), 0.18 mg/kg (Se) and 0.12 mg/kg (Co). However, significant differences exist between the different types of rice, with brown rice showing the highest content of most essential elements. The daily intake of essential elements resulting from the average Iberian (Portugal and Spain) per capita consumption of rice was calculated and its contribution to the Recommended Dietary Allowance (RDA) or Adequate Intake (AI) was estimated. Data showed that rice can be an important dietary source of P, Zn, Mn, Cu, Mo and Se but does not significantly contribute to the daily dietary intake of Ca, Na and Fe. The content of toxic elements was very low, indicating that rice can be regarded as a very safe food. (C) 2016 Elsevier Inc. All rights reserved.
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