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The k cups for the keurig I get are bpa free...does that matter?
Chemex, or Bialetti is the way to goA few weeks back, I had a cup of coffee in the morning made with a ceramic Melita and a paper filter. In the afternoon, I had a cup from a Cuisinart machine with plastic parts. The difference in taste popped for me that day as it never had before. (Maybe because of dentist Dr. Ellie's oral-biome program that I have been following? But I digress.) That convinced me to finally shell out for a Chemex carafe and filters. (Highly rated on Amazon and elsewhere.) The Chemex coffee was a distinct, small step up from the ceramic cone and Melita filter. The key is the Chemex filter, which is thicker--and also patented, I think. The expensive carafe is non-essential.
In comparison with current values proposed by European agencies for food safety, the daily intake of plasticizers from espresso coffee was very low.
Four pre-packed coffee types were randomly chosen and purchased in July 2015 at local retail stores. We selected-compared coffee prepared using coffee packaged in a metal (type M), bio-degradable (type BD) and two different types of plastic (type P1 and P2, respectively) capsules.
Italian expresso coffees were prepared in the laboratory with HPLC-grade water using compatible system machines. Three espresso coffee machines were used: the first one was suitable for type M and BD capsules, the remaining two machines were suitable for type P1 and P2 capsule respectively.
All HI values are far less than 1 for all determined plasticizers, suggesting that the exposure to these contaminants is not expected to be harmful.
The contribution of Cd accounted for 0.2–3.0% of the TDI, with very low risk exposure for this heavy metal. On the other hand, a single cup content of Pb accounted for nearly 42%–79% of the TDI recognized for this metal depending on the type of capsule. Finally, the risk assessment to Ni exposure was the highest among the detected heavy metals, with the content of a single cup able to fulfill the entire TDI for BD, P1 and P2 capsules.
I found a couple studies on this
Probably very little. They did test emptied capsules of each type and still detected lead from two of the four capsule types (M and P1) but no nickel or cadmium. So it seems the coffee itself is the bearer of bad metals. Which is a bit bewildering on how they have such contaminated coffee. Makes me wonder about coffee in general.So I wonder how much nickel would come from just the hot water with neutral pH.
Whilst we found the presence of Pb both in the coffee surrogate and water infused with the empty capsule, most of the other heavy metals, Ni and Cd, detected were found on in the coffee surrogate, suggesting a major role of coffee powder in retaining heavy metals.
It's probably similar to cocoa beans. They are grown in countries that are lead contaminated and every step of the production process adds a tiny bit.Probably very little. They did test emptied capsules of each type and still detected lead from two of the four capsule types (M and P1) but no nickel or cadmium. So it seems the coffee itself is the bearer of bad metals. Which is a bit bewildering on how they have such contaminated coffee. Makes me wonder about coffee in general.
From the study discussion: