Food Science and Technology International, Tokyo
Online ISSN : 1881-3976
Print ISSN : 1341-7592
ISSN-L : 1341-7592
Original papers
Aggregate Formation of Peptic Globin Digest
ジャーナル フリー

1998 年 4 巻 1 号 p. 44-47


Peptic globin digest (PG) was prepared from porcine blood globin, and the peptides were characterized by separation processes such as gel filtration chromatography, hydrophobic chromatography and sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Aggregation of the peptides was indicated by high-performance liquid chromatography (HPLC). Two fractions (F1 and F2) were obtained from PG by gel filtration chromatography. Hydrophobic chromatography of fraction F1 was carried out, and a peak corresponding to the aggregate was found in fractions F1b-F1e. These fractions, which showed an aggregate peak by HPLC, were subjected to SDS-PAGE, and two major peptide bands with molecular weight of 5000 and 6000 were found. Amino acid sequence indicated the N-terminal amino acid of these peptides to be 42-47 (Phe-Asp) and 86-92 (Ala-Leu) of β-globin, respectively. Furthermore, it was predicted that the Mw 5000 and 6000 peptides may possibly be 42-85 (Mw 4749) and 86-141 (Mw 6117) of β-globin, respectively, based on the specificity of pepsin.

© 1998 by the Japanese Society for Food Science and Technology
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