• Home
  • Search Results
  • Effect of combining conventional frying with radio-frequency post-drying on acrylamide level and quality attributes of potato chips.

Effect of combining conventional frying with radio-frequency post-drying on acrylamide level and quality attributes of potato chips.

Journal of the science of food and agriculture (2013-12-07)
Esra Koklamaz, T Koray Palazoğlu, Tolgahan Kocadağlı, Vural Gökmen
ABSTRACT

In conventional manufacturing of potato chips, achieving an extremely low moisture content (2% by weight) in the final product necessitates prolonged exposure of potato slices to high oil temperatures. This promotes acrylamide formation and causes an exponential increase in acrylamide level toward the end of the frying process. In this regard, frying potato slices partially in hot oil followed by a radio-frequency (RF) drying treatment to selectively heat the remaining moisture appears to be a viable approach in terms of limiting acrylamide formation. RF post-drying of partially fried potato slices resulted in lower acrylamide levels (80.4 ng g(-1) for control, 59.4 ng g(-1) for RF post-dried potato slices partially fried for 95 s, 54.8 ng g(-1) for RF post-dried potato slices partially fried for 80 s). This process modification also led a to 12% reduction in oil content in the final product. According to instrumental analysis results, RF post-dried samples had lower hardness and a slightly lower degree of browning in comparison to control. No significant difference (α = 0.05) was found between samples in terms of sensory characteristics. Results demonstrate that RF post-processing may be an effective strategy for minimising acrylamide levels of potato chips without adversely affecting quality attributes.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
D-(+)-Glucose, ≥99.5% (GC)
Sigma-Aldrich
D-(+)-Glucose, powder, BioReagent, suitable for cell culture, suitable for insect cell culture, suitable for plant cell culture, ≥99.5%
Sigma-Aldrich
L-Arginine, reagent grade, ≥98%
Sigma-Aldrich
D-(+)-Glucose, ACS reagent
Sigma-Aldrich
Acrylamide, suitable for electrophoresis, ≥99%
Sigma-Aldrich
Acrylamide, for molecular biology, ≥99% (HPLC)
Sigma-Aldrich
L-Arginine, from non-animal source, meets EP, USP testing specifications, suitable for cell culture, 98.5-101.0%
Sigma-Aldrich
D-(+)-Glucose, BioXtra, ≥99.5% (GC)
Sigma-Aldrich
Dextrose, meets EP, BP, JP, USP testing specifications, anhydrous
Sigma-Aldrich
L-Asparagine, ≥98% (HPLC)
Supelco
Dextrose, Pharmaceutical Secondary Standard; Certified Reference Material
SAFC
L-Arginine
Sigma-Aldrich
Acrylamide, suitable for electrophoresis, ≥99% (HPLC), powder
Sigma-Aldrich
L-Arginine, BioUltra, ≥99.5% (NT)
Sigma-Aldrich
L-Asparagine, BioReagent, suitable for cell culture, suitable for insect cell culture
Sigma-Aldrich
Acrylamide solution, 40%, suitable for electrophoresis, sterile-filtered
Sigma-Aldrich
Potassium, chunks (in mineral oil), 98% trace metals basis
Sigma-Aldrich
D-(+)-Glucose, BioUltra, anhydrous, ≥99.5% (sum of enantiomers, HPLC)
Sigma-Aldrich
L-Arginine, 99%, FCC, FG
Supelco
Acrylamide, analytical standard
USP
Dextrose, United States Pharmacopeia (USP) Reference Standard
Sigma-Aldrich
Potassium hydride, 30 wt % dispersion in mineral oil
Supelco
D-(+)-Glucose, analytical standard
Supelco
L-Arginine, Pharmaceutical Secondary Standard; Certified Reference Material
Sigma-Aldrich
Potassium, cubes (in mineral oil), 99.5% trace metals basis
Sigma-Aldrich
D-(+)-Glucose, suitable for mouse embryo cell culture, ≥99.5% (GC)
Sigma-Aldrich
Acrylamide, purum, ≥98.0% (GC)
Sigma-Aldrich
D-(+)-Glucose, Hybri-Max, powder, BioReagent, suitable for hybridoma
Sigma-Aldrich
Potassium hydride, in paraffin
Supelco
Acrylamide, certified reference material, TraceCERT®