TY - JOUR
T1 - Rheological properties of hot pepper soybean-soybean paste
AU - Yoo, B.
PY - 2001/11
Y1 - 2001/11
N2 - Rheological properties of fermented hot pepper-soybean paste (HPSP) were evaluated at different total solid contents (TS, 43.6-54.7%) and temperatures (10-40C). HPSP samples at 20C are highly shear thinning fluids (n=0.25-0.33) with large magnitudes of Casson yield stresses (106-573 Pa). Consistency index (K) and apparent viscosity (ηa,20) increased with increase in TS. Apparent viscosity of HPSP obeyed the Arrhenius temperature relationship. The magnitudes of activation energy (7.6-20.4 kJ/mole) for HPSP increased with increase in TS. A single equation, combining the effects of temperature and concentration on ηa,20, was used to describe flow behavior of HPSP. The time-dependent model of Weltman was found to be most applicable (R2 = 0.97-0.99) for HPSP. Storage (G′) and loss (G″) moduli increased with increase in TS, while complex viscosity (η*) decreased. Magnitudes of G′ were higher than those of G″ over the entire range of frequencies (ω).
AB - Rheological properties of fermented hot pepper-soybean paste (HPSP) were evaluated at different total solid contents (TS, 43.6-54.7%) and temperatures (10-40C). HPSP samples at 20C are highly shear thinning fluids (n=0.25-0.33) with large magnitudes of Casson yield stresses (106-573 Pa). Consistency index (K) and apparent viscosity (ηa,20) increased with increase in TS. Apparent viscosity of HPSP obeyed the Arrhenius temperature relationship. The magnitudes of activation energy (7.6-20.4 kJ/mole) for HPSP increased with increase in TS. A single equation, combining the effects of temperature and concentration on ηa,20, was used to describe flow behavior of HPSP. The time-dependent model of Weltman was found to be most applicable (R2 = 0.97-0.99) for HPSP. Storage (G′) and loss (G″) moduli increased with increase in TS, while complex viscosity (η*) decreased. Magnitudes of G′ were higher than those of G″ over the entire range of frequencies (ω).
UR - http://www.scopus.com/inward/record.url?scp=0035511528&partnerID=8YFLogxK
U2 - 10.1111/j.1745-4603.2001.tb01050.x
DO - 10.1111/j.1745-4603.2001.tb01050.x
M3 - Article
AN - SCOPUS:0035511528
SN - 0022-4901
VL - 32
SP - 307
EP - 318
JO - Journal of Texture Studies
JF - Journal of Texture Studies
IS - 4
ER -