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Reduction of 4(5)-Methylimidazole Using Cookie Model Systems.

Min-Chul Jung1, Mina K Kim2, Kwang-Geun Lee1

  • 1Dept. of Food Science and Biotechnology, Dongguk Univ.-Seoul, 32, Dongguk-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do, Republic of Korea.

Journal of Food Science
|September 12, 2017
PubMed
Summary

Baking cookies longer at lower temperatures effectively reduces 4(5)-methylimidazole (4-MI) levels. This process modification achieves significant 4-MI reduction without negatively impacting consumer acceptance of baked goods.

Keywords:
4(5)-methylimidazole (4-MI)Maillard reaction productscaramel coloringscookiegas chromatography-mass spectrometry (GC-MS)

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Area of Science:

  • Food Science
  • Analytical Chemistry
  • Process Engineering

Background:

  • Consumer awareness of 4(5)-methylimidazole (4-MI) toxicity is increasing.
  • Existing studies primarily focus on food additives for 4-MI reduction.
  • This research explores process modification for 4-MI reduction in cookies.

Purpose of the Study:

  • To determine the reduction of 4(5)-methylimidazole (4-MI) under various baking conditions.
  • To develop and validate an analytical method for 4-MI quantification.
  • To optimize baking parameters for 4-MI reduction while maintaining consumer acceptance.

Main Methods:

  • Gas chromatography-mass spectrometry (GC-MS) was used for 4-MI analysis.
  • Method validation included linearity, recovery, and precision assessments.
  • Cookie model systems were used to test various baking times and temperatures.

Main Results:

  • A validated GC-MS method with high sensitivity (LOD 18.5 μg/kg) was established.
  • 4-MI levels in commercial cookies ranged from 71.5 to 1254.8 μg/kg.
  • Baking at 140°C for 16 min reduced 4-MI by 28% with minimal impact on consumer liking.
  • A strong correlation (r² = 0.9981) was observed between caramel colorant and 4-MI levels.

Conclusions:

  • Process modification, specifically longer baking at lower temperatures, effectively reduces 4-MI in cookies.
  • Optimal conditions (140°C for 16 min) balance 4-MI reduction and consumer acceptance.
  • Findings offer practical solutions for the bakery industry to enhance product safety.