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. 2016 Oct 3;90(12):2885–2916. doi: 10.1007/s00204-016-1850-4

Table 2.

Silicon and Silicon dioxide (silica particle) intakes from different sources

Source Daily intake References
Silicon (Si) mg/day mg/kg bw/day
Food (naturally and from additives), Western population 20–50 0.3–0.8 EFSA (2004), Jugdaohsingh (2007) and Jurkić et al. (2013)
Food (mainly plant based) 140–204 Cited in Jugdaohsingh (2007)
Food (BE) 18.6 ± 8.5 Robberecht et al. (2009)
Beer (1 litre) 6.4–56.5 Casey and Bamforth (2010)
Dietary supplements 1–75, up to 700 0.017–1.5, up to 12 EFSA (2004, 2009)
Silica (SiO2)
E 551 in food (NL) 658
124 (“nanosilica”)
9.4 (“dissolved”)
1.8 (“nanosilica”a)
Dekkers et al. (2011)
E 551 in food 0.28–4.53 (FCRA 2016)
Dietary supplements up to 1500 up to 25 EFSA (2009)
Mixed silicate particles in food 35 (0–254) Lomer et al. (2004)
Toothpaste containing 30 % SAS 41 0.65 Using intake data from (SCCS 2015)b
E 551 in medicines 0.2 Based on two oral tablets/day à 0.5 g with 0.02 % E 551

aParticle size range 1–200 nm

b(SCCS 2015): daily intake, toothpaste = 138 mg or 2.16 mg/kg bw