• Corpus ID: 7809621

Amino acid composition and solubility of proteins isolated from sunflower meal produced in Bulgaria.

@article{Ivanova2013AminoAC,
  title={Amino acid composition and solubility of proteins isolated from sunflower meal produced in Bulgaria.},
  author={Petya Ivanova and Vesela I. Chalova and Lidia Koleva and Ivan Pishtiyski},
  journal={international food research journal},
  year={2013},
  volume={20},
  pages={2995-3000}
}
Two protein isolates (PI1 and PI2) were prepared from sunflower meal produced in Bulgaria. They were obtained by using isoelectric or ethanol precipitation following the extraction of the proteins with 10% NaCl. Their amino acid composition and water solubility as a function of pH and presence of NaCl were investigated. Lysine was established as the first limiting amino acid in the protein isolates with amino acid scores of 35.81% (PI1) and 43.09% (PI2). Both protein isolates contained… 

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References

SHOWING 1-10 OF 39 REFERENCES

OptimizatiOn Of prOtein extractiOn frOm sunflOwer meal prOduced in Bulgaria

It was established that increases of pH in the range from 2 to 10 constantly enhanced protein extractability, and by extracting 10% sunflower meal with 10% NaCl, at pH6 and 40оС for the period of 60-75 min, a protein yield greater than 50% at diminished protein-phenol interaction could be achieved.

Isolation and characterization of the major protein fraction of sunflower seeds.

The major protein fraction in sunflower seeds was isolated in a form judged homogeneous by gel filtration, gel electrophoresis and ultracentrifugation, and information on molecular conformation from circular dichroism studies is presented.

Physico-chemical and functional properties of sunflower proteins

Keywords: Sunflower protein, Helianthus annuus , helianthinin , albumins, solubility, structure, denaturation , pH, temperature, ionic strength, phenolic compounds, chlorogenic acid, foams,

Preparation of colorless sunflower protein products: Effect of processing on physicochemical and nutritional properties

A comparison was made of the different technological treatments for the preparation of colorless sunflower protein products from the viewpoint of the effect of processing conditions on the extraction

Sunflower Protein Concentrates and Isolates Prepared from Oil Cakes Have High Water Solubility and Antioxidant Capacity

Increasing the applications of industrial by-products is of great interest. Therefore, in the present study, sunflower oil cake from a local oil manufacturing company was used to obtain soluble

Characterization of enzymic sunflower protein hydrolyzates

Sunflower meal (SFM) proteins are denatured during the process of oil extraction, which greatly limits their functional and nutritional properties. Protein hydrolysates were prepared from defatted

Study on Amino Acid Content in Selected Varieties of Pisum sativum ( peas ) by Ion Exchange Chromatography

The Pisum sativum (Peas), is a widely grown legume in the Central Europe. Many countries spend high expenditure for importing Glycine max (soya beans) because it is the most popular and main protein

Sunflower Protein Concentrates and Isolates’ Low in Polyphenols and Phytate

Protein concentrates and isolates from sunflower (Helianthus annuus L.), essentially free of polyphenols and/or low in phytate, were prepared from dehulled seeds by a sequential extraction procedure

Sunflower proteins: overview of their physicochemical, structural and functional properties

This review provides detailed information about sunflower seed composition and processing, including processes to remove phenolic compounds from meals and the structure and functionality of the two major protein fractions, helianthinin and 2S albumins.