Gelation Properties of Low Acyl and High Acyl Mixed Acid Gellan Gels

被引：0
|
作者：
Chen Q. [1 ]
Zhou T. [1 ]
Cheng H. [1 ]
Han X. [1 ]
机构：
[1] School of Food Science and Biotehnology, Zhejiang Gongshang University, Hangzhou
来源：
Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery | 2020年 / 51卷 / 06期
关键词：
Acid gels; Equilibrium modulus; High acyl gellan gum; Low acyl gellan gum;
D O I：
10.6041/j.issn.1000-1298.2020.06.039
中图分类号：
学科分类号：
摘要：
Stress relaxation is the result of time-dependent decay of intermolecular forces under a constant imposed strain. A stress relaxation experiment is one of the most important evaluation tools to study the viscoelastic properties of materials and it reflects indirectly the microstructure changes without disrupting them during the processing. Aiming to investigate the gelation properties of low acyl (LA) and high acyl (HA) mixed acid gellan gum gels (L/H-GLG) using stress relaxation parameters. Influences of LA/HA weight ratio, gellan concentration and pH value on the gelation properties of L/H-GLG were studied. The results showed that the stress relaxation behavior of L/H-GLG fitted well with Peleg's empirical model. Meanwhile, LA/HA weight ratio, pH value and gellan concentration had a pronounced effect on the stress relaxation behavior of mixed acid gellan gum gels. The values of equilibrium modulus (EA) correlated well with gel hardness, indicating that EA could represent the gel strength. EA and k1 were increased firstly and then decreased with the increase of LA/HA weight ratio, reaching a maximum at around 50% high acyl gellan variant. This suggested that the biopolymers were now forming an interpenetrating network structure. The higher the gellan concentration was, the larger the EA was. In addition, high acyl gellan was less sensitive to changes in pH values, and subsequently no evidence of acid gelation was observed with high acyl gellan at higher proportion. The findings demonstrated that structuring as well as de-structuring of mixed gellan acid gels can be controlled in acidic environments similar to those that were presented in the stomach after food consumption. © 2020, Chinese Society of Agricultural Machinery. All right reserved.
引用
收藏
页码：360 / 365
页数：5
相关论文
共 24 条
  • [1] AMEYE H, SWINNEN J., Obesity, income and gender: the changing global relationship, Global Food Security, 23, pp. 267-281, (2019)
  • [2] DE LORENZO A, ROMANO L, RENZO L D., Obesity: a preventable, treatable, but relapsing disease, Nutrition, 71, (2019)
  • [3] LEE J Y, LEE Y, KIM H, Et al., Trends in obesity prevalence by occupation based on Korean National Health and Nutrition Examination Survey from 1998 to 2015 [J], Safety and Health at Work, 11, 1, pp. 97-102, (2020)
  • [4] HAEBICH S, MARK P, KHAN R J K, Et al., The influence of obesity on hip pain, function, and satisfaction 10 years following total hip arthroplasty [J], The Journal of Arthroplasty, 35, 3, pp. 818-823, (2020)
  • [5] LEAN M E J, LESLIE W S, BARNES A C, Et al., Primary care-led weight management for remission of type 2 diabetes (DiRECT): an open-label, cluster-randomised trial [J], The Lancet, 391, pp. 541-551, (2018)
  • [6] SUN Jian, NIU Tianjiao, CHANG Yuanyuan, Et al., Microrheological characteristics of agar-milk protein acid-induced gels, Transactions of the Chinese Society for Agricultural Machinery, 49, 2, pp. 334-338, (2018)
  • [7] LI Yang, WANG Diqiong, QI Baokun, Et al., Effect of ultrasonic treatment on structure and solubility of soybean lipophilic protein, Transactions of the Chinese Society for Agricultural Machinery, 51, 2, pp. 357-362, (2020)
  • [8] NORTON I T, FRITH W J, ABLETT S., Fluid gels, mixed fluid gels and satiety, Food Hydrocolloids, 20, pp. 229-239, (2006)
  • [9] ZHAO X, WANG Z., A pH-sensitive microemulsion-filled gellan gum hydrogel encapsulated apigenin: characterization and in vitro release kinetics, Colloids and Surfaces B: Biointerfaces, 178, pp. 245-252, (2019)
  • [10] AADIL K R, NATHANI A, SHARMA C S, Et al., Investigation of poly(vinyl) alcohol-gellan gum based nanofiber as scaffolds for tissue engineering applications, Journal of Drug Delivery Science and Technology, 54, (2019)
123