Comparison of concentration dependence of mechanical modulus in two biopolymer gel systems using scaling analysis

Hakjung Kim, Byong Yong Kim, Sundaram Gunasekaran, Jae W. Park, Won Byong Yoon

Research output: Contribution to journalArticle

4 Citations (Scopus)

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 languageEnglish
Pages (from-to)1601-1606
Number of pages6
JournalFood Science and Biotechnology
Volume22
Issue number6
DOIs
Publication statusPublished - 2013 Dec 30
Externally publishedYes

Fingerprint

Biopolymers
biopolymers
Grasshoppers
xanthan gum
Gels
gels
surimi
Fish Proteins
Muscle Proteins
Elasticity
muscle protein
gelation
elasticity (mechanics)
fish
shears
polymers
Polymers
locust beans
testing

ASJC Scopus subject areas

  • Food Science
  • Biotechnology
  • Applied Microbiology and Biotechnology

Cite this

Comparison of concentration dependence of mechanical modulus in two biopolymer gel systems using scaling analysis. / Kim, Hakjung; Kim, Byong Yong; Gunasekaran, Sundaram; Park, Jae W.; Yoon, Won Byong.

In: Food Science and Biotechnology, Vol. 22, No. 6, 30.12.2013, p. 1601-1606.

Research output: Contribution to journalArticle

Kim, Hakjung ; Kim, Byong Yong ; Gunasekaran, Sundaram ; Park, Jae W. ; Yoon, Won Byong. / Comparison of concentration dependence of mechanical modulus in two biopolymer gel systems using scaling analysis. In: Food Science and Biotechnology. 2013 ; Vol. 22, No. 6. pp. 1601-1606.
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