Acrylamide-forming potential of potatoes grown at different locations, and the ratio of free asparagine to reducing sugars at which free asparagine becomes a limiting factor for acrylamide formation

卷:220

Muttucumaru, Nira ; Powers, Stephen J. ; Elmore, J. Stephen ; Dodson, Andrew ; Briddon, Adrian ; Mottram, Donald S. ; Halford, Nigel G.

Rothamsted Res

关键词: Acrylamide;    Asparagine, crop composition;    Food safety;    Post-harvest storage;    Processing contaminant;    Reducing sugars;   

DOI  :  10.1016/j.foodchem.2016.09.199

学科分类：食品科学和技术

【 摘 要 】

Acrylamide is produced from free asparagine and reducing sugars during high-temperature cooking and food processing, and potato products are major contributors to dietary acrylamide intake. The present study analysed twenty varieties of potatoes grown at two sites (Doncaster and Woburn) in the United Kingdom to assess the effect of location of cultivation on acrylamide-forming potential. Analysis of variance revealed a full site by variety nested within type (French fry, boiling and crisping) by storage interaction for acrylamide (p < 0.003, F-test), reducing sugars and total sugars (p < 0.001, F-test). There was much greater free asparagine in potatoes grown at the Doncaster site compared with the Woburn site. Modelling of the relationship between the ratio of free asparagine to reducing sugars and the levels of acrylamide identified a value of 2.257 +/- 0.149 as the tipping point in the ratio below which free asparagine concentration could affect acrylamide formation. (C) 2016 The Authors. Published by Elsevier Ltd.