Detection of acrylamide in potato chips using a fluorescent sensing method based on acrylamide polymerization-induced...

Area of Science:

• Analytical Chemistry
• Materials Science
• Food Science

Background:

• Acrylamide is a neurotoxin and potential carcinogen found in thermally processed foods.
• Current detection methods can be time-consuming and costly.
• There is a need for simple, sensitive on-line detection methods for food safety.

Purpose of the Study:

• To develop a novel fluorescent sensing method for acrylamide detection.
• To utilize acrylamide polymerization-induced distance changes between quantum dots (QDs).
• To enable rapid, on-line monitoring of acrylamide in food products.

Main Methods:

• Functionalized QDs were prepared by binding with N-acryloxysuccinimide (NAS).
• NAS-modified QDs underwent polymerization under UV irradiation, causing fluorescence quenching.
• Acrylamide in samples interfered with polymerization, increasing fluorescence intensity.

Main Results:

• The method demonstrated a linear detection range from 3.5×10⁻⁵ to 3.5 g L⁻¹ (r²=0.94).
• A limit of detection of 3.5×10⁻⁵ g L⁻¹ was achieved.
• The method showed promise for rapid acrylamide detection in potato chips.

Conclusions:

• This novel QD-based fluorescence method provides a rapid and cost-effective alternative for acrylamide detection.
• While not as sensitive as LC-MS/MS, it is suitable for on-line food safety monitoring.
• The technique offers a promising tool for ensuring food safety in processing.