According to Official Guinness Records,
The most carrots peeled and chopped in one minute is 591 g (20.85 oz) by Rosalia Addis (Italy) on the set of Guinness World Records Smashed at Pinewood Studios, UK, on 7 April 2009. Rosalia is a chef at the Dorchester Hotel in London. She competed against Rik de Raynor, a chef working at the East Midlands Centre near Nottingham.
For a complete list of 2009 records, please visit 2009 Guinness Records in United Kingdom.