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A Comprehensive Analytical Study on the Quality Assessment of Commercially Available Packaged Coconut Oils: pH, Saponification Value, Acid Value and Sterol Content
M. Mohamed Ismail, Independent Researcher, Tiruchirappalli, Tamil Nadu, India.
Pages: 1-11 | First Published: 05 Sep 2025
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ABSTRACT

This study conducts a comprehensive quality assessment of five commercially available packaged coconut oils from local markets in Tiruchirappalli, India. Analytical parameters including pH, saponification value, acid value and sterol content was evaluated using standardized titrimetric and spectrophotometric methods to verify compliance with FSSAI standards and detect adulteration. Results indicated all samples had acceptable pH (5.25–5.57) and excellent acid values (1.24– 3.07 mg KOH/g), confirming freshness and absence of rancidity. Saponification values (200.3–277.4 mg KOH/g) showed significant variation, with four samples deviating from FSSAI standards (235–270 mg KOH/g), suggesting potential adulteration with other oils. However, all samples contained high and consistent sterol levels (24–27 mg/g), indicating nutritional quality. The study concludes that while the oils are safe and nutritious, purity concerns remain, highlighting the need for stringent market surveillance. Keywords: Coconut Oil, Adulteration, Quality Control, FSSAI, Saponification Value, Acid Value, Phytosterols.

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