title: Development of palm-based reference materials for the quantification of fatty acids composition.
abstract: Characterisation of fatty acids composition of three palm-based reference materials was carried out through inter-laboratory proficiency tests. Twelve laboratories collaborated in these tests and the fatty acids compositions of palm oil, palm olein and palm stearin were determined by applying the MPOB Test Methods p3.4:2004 and p3.5:2004. Determination of consensus values and their uncertainties were based on the acceptable statistical agreement of results obtained from the collaborating laboratories. The consensus values and uncertainties (%) for each palm oil reference material produced are listed as follows : 0.20% (C12:0), 1.66+/-0.05% (C14:0), 43.39+/-0.39% (C16:0), 0.14+/-0.06% (C16:1), 3.90+/-0.11% (C18:0), 40.95+/-0.23% (C18:1), 9.68+/-0.21% (C18:2), 0.16+/-0.07% (C18:3) and 0.31+/-0.08% (C20:0) for fatty acids composition of palm oil; 0.23+/-0.04% (C12:0), 1.02+/-0.04% (C14:0), 39.66+/-0.19% (C16:0), 0.18+/-0.07% (C16:1), 3.81+/-0.04% (C18:0), 44.01+/-0.08% (C18:1), 10.73+/-0.08% (C18:2), 0.20+/-0.06% (C18:3) and 0.34+/-0.04% (C20:0) for fatty acids composition of palm olein; and 0.20% (C12:0), 1.14+/-0.05% (C14:0), 49.42+/-0.25% (C16:0), 0.16+/-0.08% (C16:1), 4.15+/-0.10% (C18:0), 36.14+/-0.77% (C18:1), 7.95+/-0.29% (C18:2), 0.11+/-0.07% (C18:3) and 0.30+/-0.08% (C20:0) for fatty acids composition of palm stearin.
authors.affiliation: Analytical and Quality Development Unit, Malaysian Palm Oil Board, Persiaran Institusi, Bandar Baru Bangi, Selangor, Malaysia. azmil_haizam@mpob.gov.my
authors.forename: Azmil Haizam Ahmad
authors.initials: AH
authors.lastname: Tarmizi
authors.forename: Siew Wai
authors.initials: SW
authors.lastname: Lin
authors.forename: Ainie
authors.initials: A
authors.lastname: Kuntom
mesh_terms: D028023:Arecaceae / Q000737:chemistry*; D002623:Chemistry Techniques, Analytical / Q000379:methods*; D005227:Fatty Acids / Q000032:analysis* / Q000737:chemistry*; D000073878:Palm Oil; D010938:Plant Oils / Q000032:analysis / Q000737:chemistry; D018514:Plant Structures / Q000737:chemistry*; D012015:Reference Standards
chemical_list: D005227:Fatty Acids; D010938:Plant Oils; D000073878:Palm Oil