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

Salgado, Pablo; Molina Ortiz, Sara; Petruccelli, Silvana; Mauri, Adriana
March 2011
Journal of the American Oil Chemists' Society (JAOCS);Mar2011, Vol. 88 Issue 3, p351
Academic Journal
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 protein concentrates and isolates with different content of phenolic compounds. All the extraction procedures evaluated resulted in concentrates and isolates with water solubility higher than 75% but with different chemical composition, color and physicochemical properties (i.e. surface hydrophobicity, thermal stability, and polypeptide composition). Since no extraction process led to a complete extraction of phenolic compounds, all the products exhibited antioxidant activity, which depended on the concentration of such compounds. Phenolic compounds give a dark color to sunflower protein concentrates and isolates; nevertheless their final color tone was more dependent on the conditions used in the preparation process than on the amount of phenolic compounds in the product. The results demonstrate the value of sunflower industrial oil cake as a source of proteins with high water solubility, good physicochemical properties and antioxidant activity.


Related Articles

  • CARACTERIZAÇÃO QUÍMICA E FÍSICO-QUÍMICA DA POLPA DO NONI (MORINDA CITRIFOLIA) CULTIVADO NO ESTADO DO CEARÁ. Correia, Antonia Alaís da Silva; Gonzaga, Maria Leônia da Costa; de Aquino, Andréa Cardoso; de Souza, Paulo Henrique Machado; de Figueiredo, Raimundo Wilane; Maia, Geraldo Arraes // Brazilian Journal of Food & Nutrition / Alimentos e Nutrição;Oct-Dec2011, Vol. 22 Issue 4, p609 

    This study aimed to evaluate the chemical and physical-chemical pulp noni grown in the state of Ceara. Ripe fruit from a plantation located in the city Horizonte (Ceara-Brazil) were pulped and the pulp extracted, packaged in polyethylene bags, sealed and stored at -20°C for further analysis....

  • Dynamic oil system holds quirks. Jiroutek, Steven; Sheble, Nicholas // InTech;May2006, Vol. 53 Issue 5, p20 

    The article highlights the efficiency of water-activity measurement in coping with the fluctuating saturation point of a dynamic oil system. Saturation point is the maximum amount of water that a fluid can contain in solution. Once the solution became saturated, free water is formed by a...

  • The Solubility of Salicylic Acid in Supercritical Carbon Dioxide. Maksudov, R.; Novikov, A.; Sabirzyanov, A.; Gumerov, F. // High Temperature;Nov2005, Vol. 43 Issue 6, p854 

    The possibility of using the method of supercritical fluid extraction for purifying the product of synthesis of salicylic acid is revealed and confirmed experimentally. A continuous-flow experimental setup is used to investigate the solubility of salicylic acid and phenol in supercritical CO2...

  • Effect of Novel Synthesised Policosanyl Phenolates on Lipid Oxidation. ZHIQIANG WANG; SEUNG HWAN HWANG; SOON SUNG LIM // Czech Journal of Food Science;2016, Vol. 34 Issue 5, p414 

    Lipophilic derivatisation of phenolic acids could greatly improve their antioxidant activities and solubility in hydrophobic environments, broadening their applications in food, pharmaceutical, and cosmetic industries. In this study, we conducted enzymatic lipophilisation of eight phenolates...

  • Water Solubility of Carbon Dioxide under Supercritical and Subcritical Conditions. Sabirzyanov, A. N.; Shagiakhmetov, R. A.; Gabitov, F. R.; Tarzimanov, A. A.; Gumerov, F. M. // Theoretical Foundations of Chemical Engineering;Jan/Feb2003, Vol. 37 Issue 1, p51 

    The solubility of carbon dioxide in water at t = 25, 50, 100, and 150°C and p = 10–80 MPa is studied experimentally by a static method in a constant-volume cell. The results are described by the entropy method of similarity theory. The calculated and experimental data are in...

  • Systems chemistry: Selecting complex behaviour. Bissette, Andrew J.; Fletcher, Stephen P. // Nature Chemistry;Jan2015, Vol. 7 Issue 1, p15 

    The article presents a study that investigates the complex behavior of chemical systems. Researchers used chemo-robotic equipment that utilizes artificial evolution in selecting preferred traits of chemcial systems of oil droplets of water. Moreover, they found that oil droplets' behavior is the...

  • The effect of phosphorus on manganocolumbite and mangaotantalite solubility in peralkaline to peraluminous granitic melts. YONG TANG; HUI ZHANG; BING RAO // American Mineralogist;2016, Vol. 101 Issue 2, p415 

    Solubility experiments of Mn-columbite (MnNb2O6) and Mn-tantalite (MnTa2O6) were conducted under water-saturated conditions in synthetic haplogranitic melts containing different amounts of phosphorus at 800 °C and 100 MPa. All experiments were carried out in cold-seal rapid quenching pressure...

  • Physical chemistry: Separating water by spin.  // Nature;1/27/2011, Vol. 469 Issue 7331, p447 

    The article offers information on the separation of water molecules through spin orientations of the hydrogen atoms.

  • Protein solubility: sequence based prediction and experimental verification. Pawel Smialowski; Antonio J. Martin-Galiano; Aleksandra Mikolajka; Tobias Girschick; Tad A. Holak; Dmitrij Frishman // Bioinformatics;Oct2007, Vol. 23 Issue 19, p2536 

    Motivation: Obtaining soluble proteins in sufficient concentrations is a recurring limiting factor in various experimental studies. Solubility is an individual trait of proteins which, under a given set of experimental conditions, is determined by their amino acid sequence. Accurate theoretical...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics