Frying stability of rice bran oil and palm olein

Fan, Hui Yin and Sharifudin Md. Shaarani and Hasmadi Mamat and Chew, H. M. (2013) Frying stability of rice bran oil and palm olein. International Food Research Journal, 20. pp. 403-407. ISSN 2231-7546

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A study to measure frying quality and stability of rice bran oil (RBO) compared to palm olein (PO) was conducted. The oils were used to fry French fries continuously for six hours a day up to five days at a temperature of 185 ± 5°C. Oil samples were collected and analyzed for free fatty acid (FFA), peroxide value (PV), smoke point, p-anisidine value (p-AV), iodine value (IV) and colour. At the end of the frying period for both oil samples, FFA, PV, colour and p-AV were increased whereas the IV and smoke point decreased. The rate of FFA formation of RBO was slightly lower which increased from 0.142% to 0.66% compared to PO which was from 0.079% to 0.93%. The PV of RBO showed consistent increased from 3.9 meq/kg to 13.4 meq/kg whereas PO with initial value at 3.4 meq/kg increased to 34.6 meq/kg on the fifth day. Smoke point of RBO and PO progressively dropped from 235°C to 188°C and 220°C to 178°C, respectively. The level of p-AV for RBO increased from 12.19 to 32.65 from the initial to the end of frying day whereas PO had higher rate of changes in p-AV which was from 10.45 to 60.75. The IV decreased over frying time where IV of RBO decreased from 94.5 to 66.5 while IV of PO decreased from 50.9 to 44.6. The colour of RBO showed increased in redness and yellowness but PO was darker at the end of the frying trial. In general, RBO showed better stability than the PO in deep frying of French fries.

Item Type: Article
Keyword: Rice bran oil , Palm olein , Frying stability
Subjects: S Agriculture > SB Plant culture > SB1-1110 Plant culture > SB183-317 Field crops Including cereals, forage crops, grasses, legumes, root crops, sugar plants, textile plants, alkaloidal plants, medicinal plants
T Technology > TS Manufactures > TS1-2301 Manufactures > TS2120-2159 Cereals and grain. Milling industry
Department: FACULTY > Faculty of Food Science and Nutrition
Date Deposited: 22 Nov 2021 09:50
Last Modified: 22 Nov 2021 09:50

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