HPP – Summary of Specific Effects Vitamins B1, B2 and B6 – few studies, however results show high retention Vitamin B9 (folate) – unclear results Vitamin C – contradictory - oxygen and oxidative enzymes not controlled; however retention better than thermal treatment Carotenoids stable to HPP, may increase Phenolics unaffected by HPP, may increase Total fiber unaffected, some solubilization