STUDY OF THERMAL PROPERTIES, TURBIDITY, EFFECTIVE FACTORS ON PARTICLE SIZE AND OSCILLATORY RHEOLOGY OF PECTIN-CASEINATE BIOPOLYMER NANOCOMPLEXES

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BAHRANI SAJEDEH; GHANBARZADEH BABAK; HAMISHEHKAR HAMED; HOSEINI MOHAMMADYAR

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Journal: Iranian Journal of Polymer Science and Technology Year:2013 | Volume:25 | Issue:6 (ISSUE NO. 122) Page(s): 434-447

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Title

STUDY OF THERMAL PROPERTIES, TURBIDITY, EFFECTIVE FACTORS ON PARTICLE SIZE AND OSCILLATORY RHEOLOGY OF PECTIN-CASEINATE BIOPOLYMER NANOCOMPLEXES

Author(s)

BAHRANI SAJEDEH | GHANBARZADEH BABAK | HAMISHEHKAR HAMED | HOSEINI MOHAMMADYAR | Issue Writer Certificate

Keywords

CASEINATE-PECTINQ2

NANOCOMPLEXESQ2

PARTICLE SIZEQ2

DSCQ2

TURBIDITYQ2

OSCILLATORY RHEOLOGYQ2

Abstract

The biopolymer-based NANOCOMPLEXES are a group of nanocapsules that are used for encapsulation and control delivery of nutraceuticals. They are formed by binding of proteins and polysaccharides. In this study, complex formation between pectin and sodium caseinate was taken place by addition of pectin solutions (0.2, 0.45 and 0.7 %w/v) into the caseinate solutions (0.5, 1 and 1.5 %w/v) and adjusted their pH below isoelecteric point of sodium caseinate. The effect of various factors such as biopolymer concentration, salt concentration, temperature and time of ultrasound on the properties of pectin-casein NANOCOMPLEXES was investigated. Differential scanning calorimetry (DSC) and PARTICLE SIZE analyzer were used for study of complex formation and PARTICLE SIZE determination, respectively. The results of DSC and turbidimetry showed complex formation between the pectin and casein at pH below 5 and the results of PARTICLE SIZE showed formation of stable dispersion with a minimum size of 86 nm at pH 4.1, caseinate of 1 %w/v and pectin 0.45 %w/v concentration. The ultrasound for more than 1 min reduced PARTICLE SIZE and addition of salt at high and low concentrations had different effects on the stability of the colloidal system. The lowering of temperature from 21 to 4oC resulted in smaller PARTICLE SIZE of NANOCOMPLEXES. The oscillatory rheological results showed that with increasing pectin concentration, viscoelastic moduli were increased and loss moduli were higher than storage modulus.

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APA: Copy

BAHRANI, SAJEDEH, GHANBARZADEH, BABAK, HAMISHEHKAR, HAMED, & HOSEINI, MOHAMMADYAR. (2013). STUDY OF THERMAL PROPERTIES, TURBIDITY, EFFECTIVE FACTORS ON PARTICLE SIZE AND OSCILLATORY RHEOLOGY OF PECTIN-CASEINATE BIOPOLYMER NANOCOMPLEXES. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), 25(6 (ISSUE NO. 122)), 434-447. SID. https://sid.ir/paper/6108/en

Vancouver: Copy

BAHRANI SAJEDEH, GHANBARZADEH BABAK, HAMISHEHKAR HAMED, HOSEINI MOHAMMADYAR. STUDY OF THERMAL PROPERTIES, TURBIDITY, EFFECTIVE FACTORS ON PARTICLE SIZE AND OSCILLATORY RHEOLOGY OF PECTIN-CASEINATE BIOPOLYMER NANOCOMPLEXES. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN)[Internet]. 2013;25(6 (ISSUE NO. 122)):434-447. Available from: https://sid.ir/paper/6108/en

IEEE: Copy

SAJEDEH BAHRANI, BABAK GHANBARZADEH, HAMED HAMISHEHKAR, and MOHAMMADYAR HOSEINI, “STUDY OF THERMAL PROPERTIES, TURBIDITY, EFFECTIVE FACTORS ON PARTICLE SIZE AND OSCILLATORY RHEOLOGY OF PECTIN-CASEINATE BIOPOLYMER NANOCOMPLEXES,” IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), vol. 25, no. 6 (ISSUE NO. 122), pp. 434–447, 2013, [Online]. Available: https://sid.ir/paper/6108/en

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