The first process to which mutton tallow was subjected was rendering, which was intended to separate the fat from the remains of other tissues. The tallow was then subjected to a bleaching process to remove unwanted haem pigments. For this purpose, the rendered tallow in the amount of 150 g was transferred into a 250 mL round-bottomed flask and heated to 80 °C by means of a heating mantle, and bleaching earth was added in an amount equal to 2% w/w of the mass of fat to be bleached. The process was carried out at 80 °C for one hour under reflux. After the process the bleaching earth was separated from the fat using hot filtration (70 °C).
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Rendering and Bleaching of Mutton Tallow
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Corresponding Organization :
Other organizations : Kazimierz Pułaski University of Technology and Humanities in Radom, Krakow University of Economics, Warsaw University of Life Sciences
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Variable analysis
independent variables
- Amount of bleaching earth added (2% w/w of the mass of fat to be bleached)
- Effectiveness of bleaching process (removal of unwanted haem pigments)
- Temperature (80 °C)
- Duration of bleaching process (1 hour)
- Apparatus (round-bottomed flask and heating mantle)
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