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Roasted Rye as a Coffee Substitute: Methods for Reducing Acrylamide.

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This summary is machine-generated.

Reducing acrylamide in roasted rye, a coffee substitute, is crucial for food safety. Lowering free asparagine in raw rye and long-term storage significantly decreased acrylamide levels, meeting EU standards after six months.

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Area of Science:

  • Food Science
  • Analytical Chemistry
  • Food Safety

Background:

  • Acrylamide is a potential carcinogen, necessitating reduction in food products.
  • EU legislation sets reference values for acrylamide content.
  • Roasted rye is explored as a coffee substitute, requiring acrylamide assessment.

Purpose of the Study:

  • To evaluate roasted rye as a coffee substitute concerning acrylamide content.
  • To investigate factors influencing acrylamide formation in roasted rye.
  • To determine methods for reducing acrylamide in roasted rye products.

Main Methods:

  • Roasted rye was analyzed for acrylamide using GC-MS and HPLC-CAD.
  • The study examined the impact of process modifiers (CaCl2, asparaginase, pH) and storage.
  • Free asparagine content and carbohydrate composition were analyzed.

Main Results:

  • Pre-roast treatments (CaCl2, asparaginase, pH adjustment) did not reduce acrylamide.
  • Lower free asparagine in raw rye significantly decreased final acrylamide levels.
  • Acrylamide content decreased significantly after 3 and 6 months of storage, with 6-month samples meeting EU limits (<500 µg kg⁻¹).

Conclusions:

  • Reducing free asparagine in raw rye is key to lowering acrylamide in roasted products.
  • Long-term storage is an effective strategy for reducing acrylamide in roasted rye.
  • Roasted rye stored for 6 months meets EU acrylamide requirements, making it a viable coffee substitute.