Abstract
ABSTRACTA high quality white, fluffy, water‐soluble fish protein hydrolysate (FPH) powder can be prepared by pepsin hydrolysis of fish flesh. However, the use of this process is limited by the high cost of pepsin which must be purchased as pharmaceutical grade. A practical method was developed for producing crude pepsin preparations of sufficient purity to allow efficient operation of the FPH process. Samples of crude enzyme prepared by autodigestion of hog stomach mucosa, especially at pH 1.0, gave high pepsin activity. A detailed procedure is presented for preparing this high activity, low cost crude pepsin for the FPH process.
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