Effects of high intensity ultrasonic treatment on molecular structure and functional properties of citrus pectin

  • CHEN Qianqian ,
  • ZHANG Meng ,
  • WANG Haiyan ,
  • HUANG Mengling ,
  • LIU Fengxia
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  • (College of Food Science and Technology, Huazhong Agricultural University,Key Laboratory of Environment Correlative Dietology, Ministry of Education, Wuhan 430070, China)

Received date: 2018-03-01

  Online published: 2019-02-21

Abstract

Effects of different ultrasonic treatments with different intensities and lengths of treatment on molecular structure, physic-chemical properties, and functional properties of citrus pectin were investigated. The results showed that the molecular weight of citrus pectin was significantly decreased with increased ultrasonic intensity and treatment time, while there were no significant differences in galacturonic acid, protein, and total sugar content (P>0.05). Moreover, the apparent viscosity of citrus pectin decreased significantly after increasing the length and intensity of ultrasonic treatment, and its structure showed to form elastic activity area more easily. Regarding to emulsions prepared by different citrus pectins, the droplet size decreased and storage stability increased in ultrasonic treated samples, indicating that ultrasound treatment could increase the emulsifying capacity of citrus pectin to some extent.

Cite this article

CHEN Qianqian , ZHANG Meng , WANG Haiyan , HUANG Mengling , LIU Fengxia . Effects of high intensity ultrasonic treatment on molecular structure and functional properties of citrus pectin[J]. Food and Fermentation Industries, 2019 , 45(2) : 87 -94 . DOI: 10.13995/j.cnki.11-1802/ts.017144

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