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Optimization of solid phase microextraction analysis for the headspace volatile compounds of parmesan cheese
Jae-Hwan Lee1, Raymond Diono, Gur-Yoo Kim
1Department of Food Science and Technology, The Ohio State University, 2015 Fyffe Court, Columbus 43210, USA.
Journal of Agricultural and Food Chemistry
|February 20, 2003
Summary
Optimizing solid phase microextraction (SPME) for Parmesan cheese volatile compounds enhances analysis. Reproducibility improved with controlled temperature and stirring, while sonication and salt solution boosted sensitivity significantly.
Area of Science:
- Analytical Chemistry
- Food Science
- Chromatography
Background:
- Volatile compounds are crucial for cheese aroma and flavor profiles.
- Accurate analysis of these compounds is essential for quality control and research.
- Solid Phase Microextraction (SPME) is a widely used technique for volatile analysis.
Purpose of the Study:
- To develop and optimize Solid Phase Microextraction (SPME) conditions for analyzing headspace volatile compounds in Parmesan cheese.
- To enhance the reproducibility and sensitivity of the SPME method for cheese analysis.
Main Methods:
- Optimization of SPME parameters including sampling temperature, sample stirring, sonication time, and salt concentration.
- Analysis of headspace volatile compounds from Parmesan cheese using SPME.
- Gas Chromatography-Mass Spectrometry (GC-MS) was implied for compound identification and quantification.
Main Results:
- Developed SPME conditions achieved a coefficient of variation of 2% for cheese volatile analysis.
- Reproducibility was enhanced through low-temperature sampling (-10°C), controlled temperature, and magnetic stirring.
- Sensitivity increased by 125% in total peak areas using 40 min sonication and 25% sodium phosphate solution compared to deionized water.
- Salt solution and sonication increased volatile compounds quantitatively without generating new ones.
Conclusions:
- The optimized SPME method provides a reproducible and sensitive approach for analyzing volatile compounds in Parmesan cheese.
- The study demonstrates the effectiveness of sonication and salt addition in enhancing SPME efficiency for food aroma analysis.
- This optimized method can be valuable for quality assessment and understanding the chemical basis of cheese flavor.