Effect of refining on quality and composition of sunflower oil
The odour of the refined oil was agreeable and had no offensive smell which might be due to low FFA content of the oil. The peroxide value reduced from 22.5 to 7.9 meq/kg during refining which was less than the standard specified value of 10 meq/kg. The reduction is probably due to the absorbance of peroxide compounds by bleaching earth.
Sell Sunflower Oil High Quality Refined Sunflower Seed Carrier Oil For Sale. sn Parameter(s) values Range 1 Shelf life years 2 2.33 2 Specific density at 200 c kg-m3 0.916 0.916-0.923 3 Refractive index at 400 c 1.475 1.475-1.476 4 Acidity mg koh %gm oil max 1.4% 1.0-2.0 5 Peroxide value mmol- oil max 1 3 max 6 Color value iodine mg max 10 15 max 7
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Specification & MSDS for Activated Bleaching Earth. Bleaching Earth, Fuller earth, XY-1 is very suitable for refining soybean oil. Bleaching Earth XY-2 is very suitable for refining edible oil(for example refining soybean oil, rapeseed oil, groundnut oil, coconut oil, mustard oil,corn oil, linseed oil, castor),and animal oils and fats.
Bleaching: The major purpose of bleaching is the removal of off-colored materials in the oil. The heated oil is treated with various bleaching agents such as fuller's earth, activated carbon, or activated clays. Many impurities, including chlorophyll and carotenoid pigments, are absorbed by this process and removed by filtration.
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The once refined corn oil product 116 has a composition of a free fatty acid content of less than 1% by weight and a moisture content ranging from about 0.09% to about 0.35% by weight. "Once refined corn oil product" refers to distillers corn oil, which has processed through a refining process, such as alkali refining.
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As the focus of this paper would suggest, optimization of the bleaching process is considerably important to both (1) achieving high quality refined oil products and (2) the economic viability of the oil purification process. Figure 1. Processing efficiency process-dependent removal of
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Bleaching Earth and Activated carbon is added to the oil through a dosing unit which is controlled by PLC. The Bleacher is proprietary designed with internal partitions and set of high efficiency turbine agitators to avoid short cycling and
