title: Stability of Silica- and Enzyme-Treated Palm Oil Under Deep Frying Conditions.
abstract: The oxidative and thermal stability of low diglycerides palm oil produced via silica treatment (sPO) and enzymatic treatment (ePO) compared with standard quality palm oil (SQ) and premium quality palm oil (PQ) was investigated. Both of the oils displayed better oxidative stability compared with SQ as well as significantly higher (P < 0.05) thermal resistance and oxidative strength than SQ and PQ due to lower amounts of partial glycerides. Although the initial induction periods (IPs) of sPO and ePO were significantly lower compared with SQ and PQ, both the oils showed slower drops in their IP values. The darkening effect after frying was significantly (P < 0.05) slower in sPO compared with SQ, PQ, and ePO. Besides, there is no difference p > 0.05 in the rate of FFA formation between sPO and PQ. The anisidine value and peroxide values were lowest in sPO, followed by ePO, PQ, and SQ.
authors.affiliation: Sime Darby Research Sdn Bhd, R&D Carey Island-Upstream, Carey Island, Selangor, Malaysia.
authors.forename: Nur Azwani Ab
authors.initials: NA
authors.lastname: Karim
authors.affiliation: Sime Darby Research Sdn Bhd, R&D Carey Island-Upstream, Carey Island, Selangor, Malaysia.
authors.forename: Ahmadilfitri Md
authors.initials: AM
authors.lastname: Noor
authors.affiliation: Inst. of Bioscience, Univ. Putra Malaysia, Serdang, Malaysia.
authors.forename: Yee-Ying
authors.initials: YY
authors.lastname: Lee
authors.affiliation: Inst. of Bioscience, Univ. Putra Malaysia, Serdang, Malaysia.|Dept. of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Univ. Putra Malaysia, Serdang, Malaysia.
authors.forename: Oi-Ming
authors.initials: OM
authors.lastname: Lai
mesh_terms: D003296:Cooking; D004075:Diglycerides / Q000378:metabolism*; D004798:Enzymes; D005230:Fatty Acids, Nonesterified / Q000378:metabolism; D005511:Food Handling / Q000379:methods*; D006358:Hot Temperature; D006801:Humans; D015227:Lipid Peroxidation; D010084:Oxidation-Reduction; D000073878:Palm Oil; D010545:Peroxides / Q000378:metabolism*; D010938:Plant Oils / Q000378:metabolism*; D050050:Protein Carbonylation; D012822:Silicon Dioxide
chemical_list: D004075:Diglycerides; D004798:Enzymes; D005230:Fatty Acids, Nonesterified; D010545:Peroxides; D010938:Plant Oils; D000073878:Palm Oil; D012822:Silicon Dioxide
keywords: enzyme; palm; silica; stability; triacylglycerols