Interesting, so far no evidence? I did some googling and found LOTS of claims. I did find a mention of evidence, so far can't find the source (see below). BTW the juice press looks interesting, I'm thinking of building one using a Harbor Freight $13 4 ton press.
http://www.thejuicepress.co.uk/ *Jerome Bailey (a US chemist) found that using a combination of the Champion Juicer with a juice press the last 10% of the juice contained the highest levels of vitamins and minerals.* * * *It seems that the last ten percent of juice comes out with a far higher content than the first ten percent. Efficient pulping and pressing results in a higher percentage of nutrients being extracted (up to 30% more*), even if the quantity of juice extracted remains the same. * * * *Using a juice press with an electric juicer makes perfect sense for the most nutritious juice.* * * *Buy One Today!! <http://www.thejuicepress.co.uk/ourshop/> * * * **Calcium data from 2.5 kg carrots* * * - * Champion Juicer 1458 mg* - * Champion Juicer + Press 2708 mg* -- Alan Jones "The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people." (Tenth Amendment to the US Constitution)