Study of Composition and Ratio of Fatty Acid and Shelf Life of Winterized Lard Oil
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Abstract
This research aims to study composition and ratio of fatty acid and shelf life of Kurobuta and Three-Crossbred lard oils in order to use as primary data for the development of industrial lard oil production. Lard oils from the 2 pig breeds were prepared by rendering ground fats at 90-140 ºC, 1 hour and winterizing the lard oils in two steps: (1) at 28 ºC, 48 hours and (2) at 26 ºC, 48 hours. Rendering yields of Kurobuta and Three-Crossbred lard oils were measured at 60.96% and 59.14%. Winterization yields from Three-Crossbred lard oil was 25.13% and the yield from Kurobuta lard oil was 20.54%. Saturated fatty acid (SFA), monounsaturated fatty acid (MUFA) and polyunsaturated fatty acid (PUFA) from Kurobuta lard oil were 34.28%, 42.37% and 18.37%, respectively. SFA, MUFA and PUFA content of Three-Crossbred lard oil were 33.76%, 41.41% and 19.83%. Kurobuta lard oil contained 1.03, 17.32, 2.24 and 40.11 g/100g of omega 3, 6, 7 and 9. Three-Crossbred lard oil contained 1.15, 18.68, 2.04 and 39.35 g/100g of omega 3, 6, 7 and 9. Trans-fat was not found in the lard oils. Shelf life of Kurobuta and Three-Crossbred lard oils at 24±1 ºC under lighted conditions were 75 and 60 days, respectively.
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