Standards for essential composition and quality factors of commercial virgin coconut oil and its differentiation from RBD coconut oil and copra oil

• Main Authors: Dayrit, Fabian M, Buenafe, Olivia Erin M, Chainani, Edward T, de Vera, Ian Mitchelle S, Dimzon, Ian Ken D, Gonzales, Estrella G, Santos, Jaclyn Elizabeth R
• Format: text
• Published: Archīum Ateneo 2007
• Subjects: Biochemistry; Computer Sciences
• Online Access: https://archium.ateneo.edu/chemistry-faculty-pubs/105; http://philjournalsci.dost.gov.ph/26-past-issue-vol-136-no-2-2007/346-standards-for-essential-composition-and-quality-factors-of-commercial-virgin-coconut-oil-and-its-differentiation-from-rbd-coconut-oil-and-copra-oil
• Institution: Ateneo De Manila University

Commercial samples of virgin coconut oil (VCO), refined, bleached and deodorized coconut oil (RBD CNO), and copra oil were analyzed using standard chemical parameters: gas chromatography (GC) of the fatty acid methyl esters (FAME), % moisture by Karl Fischer titration, % volatile matter at 120° C, % free fatty acid, iodine value, peroxide value, and microbial contamination. Principal components analysis (PCA) of the GC-FAME results indicates that the various samples cannot be differentiated by their fatty acid composition, indicating that the fatty acid profile is not affected by the processing method. No trans-fatty acid was detected in all samples down to 0.01% (w/w) detection limit. VCO can be differentiated from RBD CNO and copra oil using the following tests: % moisture by Karl Fischer, % volatile matter volatile at 120° C, and peroxide value.