Improving the properties of fodder potato protein concentrate by enzymatic hydrolysis.
Protein hydrolysates of profitable properties were prepared from the fodder potato protein concentrate. The hydrolysis process was performed with the use of commercial available enzyme (Alcalase) over a 2 and 4 h incubation period. Chemical and amino acid composition as well as functional properties of resultant hydrolysates were determined. A 2 h long process occurred profitable to obtain preparations of well balanced amino acid composition as well as proved functional properties. The industrial preparation, modified within proteolytic enzyme, totally soluble (average 98%), was characterised by fivefold higher oil holding capacity (average 5.4 cm(3)/g) and much better foam capacity (more than 150%) as compared to the material underwent modification (13.00%, 2.1 cm(3)/g and 5.33%, respectively). Presented results suggested potential use of fodder potato protein not destined directly for food purposes as the suitable product for preparations characterised by high nutritive value and functional properties.
Department of Food Storage and Technology, Faculty of Food Science, Wroclaw University of Environmental and Life Sciences, Chełmońskiego Str. 37/41, 51-630 Wrocław, Poland. Electronic address: joanna.miedzianka@up.wroc.pl.
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Miedzianka
Department of Food Storage and Technology, Faculty of Food Science, Wroclaw University of Environmental and Life Sciences, Chełmońskiego Str. 37/41, 51-630 Wrocław, Poland.
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Pęksa
Department of Animal Products Technology and Quality Management, Faculty of Food Science, Wroclaw University of Environmental and Life Sciences, Chełmońskiego Str. 37/41, 51-630 Wrocław, Poland.
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Pokora
Department of Food Storage and Technology, Faculty of Food Science, Wroclaw University of Environmental and Life Sciences, Chełmońskiego Str. 37/41, 51-630 Wrocław, Poland.
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Rytel
Department of Food Storage and Technology, Faculty of Food Science, Wroclaw University of Environmental and Life Sciences, Chełmońskiego Str. 37/41, 51-630 Wrocław, Poland.
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Tajner-Czopek
Department of Food Storage and Technology, Faculty of Food Science, Wroclaw University of Environmental and Life Sciences, Chełmońskiego Str. 37/41, 51-630 Wrocław, Poland.
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Kita
D000596:Amino Acids / Q000737:chemistry / Q000378:metabolism; D000821:Animal Feed; D001407:Bacillus / Q000378:metabolism; D003124:Colorimetry; D005504:Food Analysis / Q000379:methods*; D006868:Hydrolysis; D008970:Molecular Weight; D009753:Nutritive Value; D010447:Peptide Hydrolases / Q000378:metabolism; D011492:Protein Hydrolysates / Q000737:chemistry*; D059748:Proteolysis; D015203:Reproducibility of Results; D011198:Solanum tuberosum / Q000737:chemistry*; D012995:Solubility; D013053:Spectrophotometry; D013381:Subtilisins / Q000378:metabolism
D000596:Amino Acids; D011492:Protein Hydrolysates; D010447:Peptide Hydrolases; D013381:Subtilisins
Amino acid composition; Functional properties; Potato protein hydrolysates