Kinetics of ultrasonic degradation of polysaccharide from Porphyra yezoensis

马海乐 周存山 郑悦 骆琳 王振斌

您当前的位置：

首页 >

文章列表页 >

Kinetics of ultrasonic degradation of polysaccharide from Porphyra yezoensis

更新时间：2025-12-10

- Kinetics of ultrasonic degradation of polysaccharide from Porphyra yezoensis
- CIESC Journal Issue 3, (2007)
- 作者机构：
  
  1. 江苏大学食品与生物工程学院
  2. 江苏省农产品生物加工与分离工程技术研究中心
  3. 中国农业机械化科学研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 March 2007，
  
  Published：05 March 2007
- 稿件说明：
移动端阅览
马海乐周存山郑悦骆琳王振斌. Kinetics of ultrasonic degradation of polysaccharide from Porphyra yezoensis[J]. CIESC Journal, 2007, (3).
DOI：

马海乐周存山郑悦骆琳王振斌. Kinetics of ultrasonic degradation of polysaccharide from Porphyra yezoensis[J]. CIESC Journal, 2007, (3). DOI：

摘要

针对多糖化学降解、热裂解和生物降解存在的一些不足，采用超声波技术研究了紫菜多糖（PYPS）的降解问题。研究了以下几个基础问题：（1）PYPS浓度、超声功率和溶液温度对降解过程中反应产物特性粘度随处理时间变化的影响；（2）用于描述PYPS分子量与特性粘度之间关系的Mark-Houwink方程的建立；（3）超声降解反应动力学方程的建立；（4）超声降解反应活化能的计算。结果表明，超声功率和溶液温度的增加有利于PYPS超声降解作用的增强，浓度的影响不是单调变化的，在0.75g/dL时降解较快；PYPS在水溶液中25℃下的Mark-Houwink方程参数为KMH＝7.86×10-3和α＝0.626；超声降解动力学研究发现，反应速率常数与反应时间之间呈显著的指数关系；超声降解反应的活化能为52.13kJ/mol。超声降解反应的活化能的数值小于两例发表的酶解法活化能，初步认为超声降解法优于酶解法。

Abstract

Due to some deficiencies of the polysaccharides degradation by the methods of chemical，thermal or enzymatic treatment，sonication was introduced for the degradation of Porphyra yezoensis polysaccharide（PYPS）.The Mark-Houwink equation，showing the relationship between molecular weight and intrinsic viscosity，was set up.It was found from the results of the degradation dynamics that there was an exponential relation between the rate constant and treatment time of sonication，different from the traditional chemical，thermal or enzymatic treatment.The activation energy of the degradation was 52.13 kJ·mol-1，and it could be preliminarily concluded that ultrasonic degradation was better than the enzymatic ones.

关键词

Keywords

references

Views

399

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Multi objective optimization of flow and heat transfer characteristics of modified manifold microchannel heat sink based on machine learning

Corrosion health status assessment method for refining unit pipeline based on GLAE-MLP

Progress in research of selective oxidation of low carbon polyols over nano-Au catalysts with precise electronic effect regulation

Mechanism and regulation of supercooling behavior in imidazolium-based ionic liquids

Physics-informed spatio-temporal graph convolutional network for fermentation processes

Related Author

No data

Related Institution

No data

⁰