More than one speed, or automatic adjustment, will also be useful as centrifugal juicers handle hard fruit at high speed, but need a slower one for soft fruit. (idealhome.co.uk)
Harder fruits like apples are also considered to have a high amount of pectin, but this stands at 1 % in comparison to the 30 % that citrus peels contain. (wander-crush.com)
It is still very important to avoid foods that pose a risk of choking for the first two years of life (or even longer), such as hard fruits and vegetables (e.g. raw carrots), stringy foods (ie. (babygourmet.com)