A Validated Method for Cholesterol Determination in Turkey Meat Products Using Relative Response Factors

Area of Science:

• Food Science
• Analytical Chemistry
• Biochemistry

Background:

• Accurate quantification of cholesterol in food products is essential for nutritional labeling and quality control.
• Existing methods may require modifications for specific food matrices like turkey meat.
• Development of precise analytical techniques is crucial for reliable food safety assessments.

Purpose of the Study:

• To develop and validate a precise and accurate method for quantifying cholesterol in turkey meat products.
• To adapt a previously established method for plant sterol determination for cholesterol analysis.
• To establish the reliability and range of the developed method for food industry applications.

Main Methods:

• Modification of a published plant sterol determination method.
• Quantification using relative response factors.
• Method validation including linearity, precision, accuracy, recovery, and matrix effects.
• Analysis of cholesterol in turkey meat samples spiked at different levels before and after saponification.

Main Results:

• The method demonstrated excellent linearity (r² ≥ 0.991) within the 1-20 µg/mL concentration range.
• Precision and accuracy met U.S. Food and Drug Administration (FDA) guidelines for method validation.
• High recovery rates (94%-105%) and negligible matrix effects (90%-112% recovery) were observed.
• The method is reliable for quantifying cholesterol in turkey meat within the 0.4-8 mg/g range.

Conclusions:

• A validated, precise, and accurate method for cholesterol quantification in turkey meat products has been successfully developed.
• The method's reliability is confirmed by its performance against FDA validation criteria and minimal matrix interference.
• This analytical approach provides a robust tool for assessing cholesterol content in turkey meat, supporting food safety and quality assurance.