ISSN:
1745-4514
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Potato tubers had 1.67% N/dry matter. Nitrogen was distributed in all anatomical regions of the tuber. Of the total N content, 43% was dialyzable-N and 32.9% true protein-N. The protein, by solubility fractionation, provided 67% albumin, 23% globulin, 1.4% prolamin and 9% glutelins. As revealed by sodium dodecyl sulfate electrophoresis (SDS-PAGE), the albumin had two major protein species, one of 45 × 103, the second of 12–25 × 103 daltons. Prolamin and glutelins contained protein bands coinciding in molecular weight with those of albumin and globulin.Protein hydrolysis with 4 N methanesulfonic acid was superior to that of 6 N HCL. Amino acid composition of proteins was determined by ion-exchange column chromatography. Some minor losses in protein composition of potatoes occurred during processing.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1745-4514.1988.tb00135.x
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