Abstract
This supplements an earlier article (1) which presented a method of calculating retention time required for countercurrent extraction of oilseeds from laboratory extraction rate data. The method is based on the empirical observation that extraction rate is governed largely by the rate at which undissolved oil goes into solution, resistance to diffusion from the flakes becoming of consequence only in thick flakes. This article introduces the concepts of parabolic concentration gradient in the flakes and of an apparent diffusivity which is an inherent property of the seed. The method is applied to the solution of several commercially important extractions.
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References
Karnofsky, G.,J. Am. Oil Chem. Soc. 63:1011 (1986).
Wingard, M.R., and W.C. Shand, Ibid.:442 (1949).
Karnofsky, G., Ibid.:564 (1949).
Frampton, V.L., and A.B. Pepperman, Ibid.:455 (1967).
Frampton, V.L., A.B. Pepperman, J. Simmons and W.H. King,Agric. and Food Chem. 15:790 (1967).
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Karnofsky, G. Design of oilseed extractors I. Oil extraction (supplement). J Am Oil Chem Soc 64, 1533–1536 (1987). https://doi.org/10.1007/BF02609361
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DOI: https://doi.org/10.1007/BF02609361