Abstract
Concentration dependence of mechanical modulus of two biopolymer systems, i.e., xanthan-locust bean (X/L) mixture and fish muscle protein (surimi) was evaluated and compared at a wide range of polymer concentrations. A small amplitude oscillatory shear test was performed to measure changes in storage (G′) modulus during gelation and after gelation. Critical concentration (Cc) of the X/L mixture and surimi gel was determined to be 0.15 g/100 mL of solvent and 2.04 g/100 g of solvent, respectively. Reduced concentration (CR=CL/Cc) was used to compare the power-law dependence of modulus of the two systems. The elasticity exponent of the X/L mixture and surimi gel was determined to be 2.4 and 1.97, respectively. The concentration dependence of two biopolymer gel systems such as physical gels (X/L) and chemicals gels (fish muscle protein) theoretically demonstrated that the difference of flexibility of junctions in the networks might distinguish the elasticity of each gel.
Original language | English |
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Pages (from-to) | 1601-1606 |
Number of pages | 6 |
Journal | Food Science and Biotechnology |
Volume | 22 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2013 Dec |
Bibliographical note
Funding Information:Acknowledgments This research was financially supported by the Korea Institute of Planning & Evaluation for Technology, Agriculture Forestry & Fisheries (IPET), C1007496-01-03.
Keywords
- concentration dependence
- elastic exponent
- gel
- surimi, xanthan and locust bean
ASJC Scopus subject areas
- Biotechnology
- Food Science
- Applied Microbiology and Biotechnology