Article (Scientific journals)
Physicochemical characterization of colored soluble protein fractions extracted from Spirulina (Spirulina platensis)
Barka, Abakoura
2018In Food Science and Technology International
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Keywords :
Spirulina,surface tension; physicochemical, compression isotherm; interface
Abstract :
[en] The aim of this study was to evaluate the physicochemical properties of Spirulina colored soluble protein fractions extracted from spray-dried Spirulina powder. Three fractions, including the blue soluble Spirulina protein, the green soluble Spirulina protein, and the total soluble Spirulina protein fractions were obtained. Investigations on their behavior at air/water interface were carried out using dynamic methods of drop volume and bubble pressure surface tension measurements. Evaluation of their monolayer films’ mechanical behavior was done via compression isotherms using Langmuir film balance. The protein contents of the fractions were 82.76, 82.29, and 74.53% for the blue, the green, and the total fractions, respectively. Surface tension decay increased with increasing concentration for all the fractions. No significant difference in surface tension decay was observed between the samples at 0.3% (w/w). Surface tension decay was less important at pH 3 for all the fractions. The total fraction and the blue fraction appeared to form more elastic films than the green fraction. The blue soluble fraction also presented the highest collapse pressure and initial expansion area.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Barka, Abakoura ;  Université de Liège - ULiège > Gembloux Agro-Bio Tech
Language :
English
Title :
Physicochemical characterization of colored soluble protein fractions extracted from Spirulina (Spirulina platensis)
Alternative titles :
[en] Propriétés physico-chimiques des fractions solubles de protéines de spiruline (Spirulina platensis)
Publication date :
17 July 2018
Journal title :
Food Science and Technology International
ISSN :
1082-0132
eISSN :
1532-1738
Publisher :
SAGE publishing
Special issue title :
Soluble protein fractions from Spirulina
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 01 August 2018

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