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ARS Home » Southeast Area » New Orleans, Louisiana » Southern Regional Research Center » Food Processing and Sensory Quality Research » Research » Publications at this Location » Publication #421794
Research Project: Improving Product Quality in Farm-Raised Catfish

Location: Food Processing and Sensory Quality Research

Title: Determination of 2-methylisoborneol and geosmin from corn bins using Twister and TF-SPME extraction GC-MS

Author
item HARPER-KERR, MEGAN - Gerstel
item KFOURY, NICOLE - Gerstel
item Dupre, Rebecca
item DEBOLT, SETH - University Of Kentucky
item Smith, Brennan

Submitted to: Meeting Abstract
Publication Type: Other
Publication Acceptance Date: 5/7/2025
Publication Date: N/A
Citation: N/A

Interpretive Summary: Naturally-occurring chemicals with a musty odor can decrease product quality. Food and beverage producers would like to monitor for these chemicals on-site using convenient methods. Use of GERSTEL's solid phase microextraction devices to detect unwanted chemicals in corn bins is demonstrated in this publication.

Technical Abstract: Off-odors in grain, particularly compounds like 2-methylisoborneol (MIB) and geosmin, can significantly compromise product quality by introducing undesirable musty or earthy notes in food and beverage products. Monitoring the grain before harvest and distribution to food and beverage manufacturers is essential to ensure the highest quality of raw materials. GERSTEL’s Thin Film Solid Phase Microextraction (TF-SPME) membranes and Twister® stir bars enable passive sampling of volatile compounds in the field. This study outlines a suitable methodology for extracting MIB and geosmin from corn bins and emphasizes its practicality and ease of use.