迅速自動固液抽出器の試作

概要

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An automatic solid-liquid extraction apparatus was developed for rapid and exhaustive extraction. The extractor body was extremely simplified by the novel arrangement of a filter paper thimble. The number of joints is kept to a minimum. Wide filteration area, which is close to that in a regular soxhlet, was obtained and there was no flow resistance through the filter paper. A filter paper thimble is placed firmly between the filter plug and the socket by pressing down the plug on which the thimble has been placed. Contents in the extraction reservoir are heated exhaustively by the solvent vapor(e. g., at 79.5℃ in using water) and stirred in order to increase the extraction efficiency remarkably. Continuous flow of the condensed solvent agitated with the sample keeps a stable boiling, rather than batchwise as in a soxhlet. The present extractors with 11 ml and 57 ml of reservoir capacities were applied to crude fat extraction from ground soybean. The extractor with 11 ml capacity completed the extraction within 20 min., whereas the soxhlet with 72 ml capacity did not complete even in more than 90 min. The plain extraction reservoir is helpful for finding the end stage of extraction. The present apparatus is simple to be made, durable to be used, easy to be cleaned, and should be useful for the rapid and exhaustive solid-liquid extraction.
社団法人日本分析化学会の論文
1985-04-05