Protein Concentrate from the Thinned-Unripened Pears and Its Amino Acid Composition
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概要
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Thinned-unripened pear, although low its dry matter, contains a good portion of protein (18-20%) on dry bases. The amounts of extracted protein, however, were between 37-38% when the extraction was made at the solution of which pH was below 10.0. Extremely high pH was needed to increase the amounts of extractable protein. In this work, the proteins were extracted by mild pH solution containing a surface active agent, such as between 9 and 10. The protein concentrate was precipitated by adding an equal volume of EtOH after adjusting the pH of extracted solution to 3.2. The results of amino acid analysis showed that the content of sulfur-containing amino acids of this protein extracts was a little low but its other essential amino acid pattern was fairly high in comparison with that of FAO/WHO which was reported in 1973.
- 公益社団法人 日本栄養・食糧学会の論文
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