DOI: 10.12187/2025.01.002
Effect of blended ratio on microstructure and rheological properties of gelatin-hydroxypropyl methylcellulose aqueous two-phase system
HU Xinnan
ZHU Chengkai
HU Zhongze
JI Zhili
JIN Weiping
GUO Cheng
SHEN Wangyang
Abstract：To improve the processability and film-forming properties of hydroxypropyl methylcellulose(HPMC),the effects of the blended ratios(0∶10,3∶7,4∶6,5∶5,6∶4,and 10∶0)of gelatin(GA)and HPMC on the microstructure,physical stability,and rheological properties of the GA-HPMC aqueous two-phase system were investigated by using zein-pectin composite particles as stabilizers.The results showed that adding 0.3％zein-pectin composite particles could reduce the phase separation rate and phase separation degree of GA and HPMC,and this stability effect was enhanced with increasing HPMC proportion(4％～7％);Under the same mass fraction of zein-pectin composite particles,these systems with proportion of GA＜5％formed a water-in-water structure with GA as the dispersed phase and HPMC as the continuous phase,and with the increase of the GA ratio,the viscosity and gel strength of GA-HPMC aqueous two-phase system increased;The gelling temperature(58.90～54.19 ℃)of the GA-HPMC aqueous two-phase system was significantly lower than that of pure HPMC solution(61.63 ℃),and its melting temperature(28.80～32.23 ℃)was positively correlated with the proportion of GA.The effect of the blended ratios on the stability and rheological properties of the GA-HPMC aqueous two-phase system showed an opposite trend,so a suitable blended ratio should be selected according to the actual requirements.
Keywords：gelatinhydroxypropyl methylcelluloseaqueous two-phase systemzein-pectin composite particlemicrostructurerheological property
Publication Date：2025-02-14
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 11-20 )