Abstract

Potato is one of the world's most widely grown tuber crop, in which starch is the predominant form of carbohydrates. Potatoes can be prepared in many ways: boiled, fried or roasted. Frying and roasting potatoes at high temperatures result in an appetizing crust, but at the same time acrylamide can form. In this study, the concentrations of the acrylamide precursors, asparagine and sugars, were determined in five different Swedish-grown potato varieties, together with the acrylamide content after typical home-cooking procedures; oven-roasting of potato wedges and pan-frying of cubes of boiled potatoes. Pan-frying of boiled potato cubes resulted in higher levels of acrylamide (530- 1100 mu g/kg) than in the wedges (140-250 mu g/kg). Blanching combined with a shorter roasting time was shown to be an efficient way of reducing the acrylamide content in roasted potato wedges, especially in the experiments performed after long-term storage, where the acrylamide content was reduced from 110-260 to 50-140 mu g/kg. No correlation was found between precursor content and acrylamide content, and this finding emphasizes the need for further studies on factors affecting acrylamide formation, for example, the availability of precursors at the surface during cooking.

Keywords

acrylamide; blanching; home cooking; potato; varieties

Published in

Molecular Nutrition and Food Research
2008, Volume: 52, number: 3, pages: 307-312
Publisher: WILEY-V C H VERLAG GMBH

SLU Authors

• Olsson, Kerstin

  • Department of Plant Breeding, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Food Science


Publication identifier

DOI: https://doi.org/10.1002/mnfr.200700240

Permanent link to this page (URI)

https://res.slu.se/id/publ/18852