Elements in rice on the Swedish market: 2. chromium, copper, iron, manganese, platinum, rubidium, selenium and zinc

Lars O. Jorhem (1) , Christina Åstrand (2) , Birgitta Sundström (2) , Malcolm Baxter (3) , Penny Stokes (3) , John Lewis (3) , Kierstin Grawé (4)

1 NFA - National Food Administration
2 R&D
3 Central Science Laboratory
4 R&D

A survey of the levels of some essential and non-essential trace elements in different types of rice available on the Swedish retail market was carried out in 2001 – 2003. The types of rice included long and short grain, brown, white and parboiled white rice. The mean levels found were; Cr: 0.008 mg kg-1, Cu: 1.9 mg kg-1, Fe: 4.7 mg kg-1, Mn: 16 mg kg-1, Pt: < 0.0003 mg kg-1, Rb: 3.3 mg kg-1, Se: 0.1 mg kg-1 and Zn: 15 mg kg-1. ICP-MS was used for the determination of Pt, Rb and Se, after acid digestion. All other elements were determined using AAS, after dry ashing. Intake calculations were performed and it was concluded that rice may contribute considerably to the daily requirements of the essential elements Cu, Fe, Mn, Se and Zn if the rice consumption is high. The levels of some elements , e.g. Fe and Mn, were significantly higher in brown compared to white rice.

Mots clés: Life Sciences

Lars O. Jorhem, Christina Åstrand, Birgitta Sundström, Malcolm Baxter, Penny Stokes, et al.. Elements in rice on the Swedish market: 2. chromium, copper, iron, manganese, platinum, rubidium, selenium and zinc. Food Additives and Contaminants, 2008, 25 (07), pp.841-850. ⟨10.1080/02652030701701058⟩. ⟨hal-00577412⟩