Li Xiong, Yao Wanzi, Hu Cebin, Lin Congyu, You Lijun, Mao Jian
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China.
School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China.
Gels. 2024 Jul 11;10(7):454. doi: 10.3390/gels10070454.
Polysaccharides derived from diverse sources exhibit distinct rheological and gel properties, exerting a profound impact on their applicability in the food industry. In this study, we collected five samples from distinct geographical regions, namely Rizhao (RZ), Lianyungang (LYG), Ningde (ND), Beihai (BH), and a wild source from Beihai (BHW). We conducted analyses on the chemical composition, viscosity, and rheological properties, as well as gel properties, to investigate the influence of chemical composition on variations in gel properties. The results revealed that the total sugar, sulfate content, and monosaccharide composition of polysaccharides exhibit similarity; however, their anhydrogalactose content varies within a range of 15.31% to 18.98%. The molecular weight distribution of polysaccharides ranged from 1.85 to 2.09 × 10 kDa. The apparent viscosity of the LYG and BHW polysaccharides was relatively high, whereas that of RZ and ND was comparatively low. The gel strength displayed a similar trend. BHW and LYG exhibited solid-like behavior, while ND, RZ, and BH demonstrated liquid-like characteristics at low frequencies. The redundancy analysis (RDA) analysis revealed a positive correlation between the texture profile analysis (TPA) characteristics and anhydrogalactose. The study could provide recommendations for the diverse applications of polysaccharides derived from different geographical regions.
来自不同来源的多糖表现出不同的流变学和凝胶特性，对其在食品工业中的适用性产生深远影响。在本研究中，我们从不同地理区域收集了五个样本，即日照（RZ）、连云港（LYG）、宁德（ND）、北海（BH）以及北海的一个野生来源（BHW）。我们对其化学成分、粘度、流变学特性以及凝胶特性进行了分析，以研究化学成分对凝胶特性变化的影响。结果表明，多糖的总糖、硫酸盐含量和单糖组成具有相似性；然而，它们的脱水半乳糖含量在15.31%至18.98%的范围内变化。多糖的分子量分布范围为1.85至2.09×10 kDa。LYG和BHW多糖的表观粘度相对较高，而RZ和ND的表观粘度相对较低。凝胶强度呈现出类似的趋势。BHW和LYG表现出类固体行为，而ND、RZ和BH在低频下表现出类液体特征。冗余分析（RDA）表明，质地剖面分析（TPA）特征与脱水半乳糖之间存在正相关。该研究可为不同地理区域来源的多糖的多样化应用提供建议。
