口腔加工对广叶绣球菌多糖剪切流变特性的影响  

Effects of Oral Processing on Shear Rheological Properties of Sparassis latifolia Polysaccharides

作　　者：贾丰荧 吴佳蔓 靳雯 郭静 云少君[1,2] 冯翠萍 JIA Fengying;WU Jiaman;JIN Wen;GUO Jing;YUN Shaojun;FENG Cuiping(College of Food Science and Engineering,Shanxi Agricultural University,Jinzhong 030801,China;Shanxi Key Laboratory of Edible Fungi in Loess Plateau,Jinzhong 030801,China)

机构地区：[1]山西农业大学食品科学与工程学院,山西晋中030801 [2]黄土高原食用菌山西省重点实验室,山西晋中030801

出　　处：《山西农业科学》2024年第5期152-158,共7页Journal of Shanxi Agricultural Sciences

基　　金：食用菌山西省科技创新团队项目(201805D131009);山西省基础研究计划(202103021224126);山西省重点研发计划(重点)项目(201603D211201)。

摘　　要：为了探讨口腔加工对广叶绣球菌多糖(SLPs)流变性的影响,为SLPs作为一种新型功能性原料提供理论依据,试验将制备得到的SLPs与人工唾液以1∶1(V/V)制备0.125%、0.25%、0.5%、1%、2%、4%混合液,采用流变仪测定其静态及动态流变特性,使用纳米粒度及电位分析仪测定0.5%、1%、2%、4%的SLPs溶液及混合液的粒径分布及平均粒径,并分析其粒径分布。结果表明,随着角频率的增加,SLPs溶液与混合液在0.25%~4.00%下表观黏度降低,在0.125%时增加,混合液的表观黏度大于SLPs溶液;SLPs溶液与混合液的剪切应力随剪切速率的增加而增大,混合液的剪切应力大于SLPs溶液,随着多糖浓度增加,剪切应力增大;SLPs溶液为0.125%~2.000%时tanδ值大于1,在4%时低频率扫描下tanδ值小于1,高频率扫描下大于1,混合液为0.125%~4.000%时tanδ值大于1。SLPs溶液为0.5%~4.0%时粒径分布主要集中在10~100 nm,极少部分分布在100~1000 nm。混合液相比于SLPs溶液,不同浓度混合液粒径分布更均匀,少量粒径集中在100~1000 nm,大部分均匀集中在10~100 nm。由此可见,口腔加工能够影响SLPs的流变学特性与粒径分布,且SLPs与人工唾液之间具有一定的协同作用。In order to explore the effect of oral processing on the rheological properties of Sparassis latifolia polysaccharides(SLPs),provide theoretical basis for SLPs as a novel functional raw material,in this experiment,the prepared SLPs was mixed with artificial saliva at a ratio of 1∶1(V/V)to prepare 0.125%,0.25%,0.5%,1%,2%,and 4%of mixed solutions,and their static and dynamic rheological properties were determined by rheometer.The particle size distribution and average particle size of SLPs solution with concentrations of 0.5%,1%,2%and 4%and the mixed solutions were determined by nano-particle size and potential analyzer,and their particle size distribution was analyzed.The results showed that with the increase of angular frequency,the apparent viscosity of SLPs solution and the mixed solutions decreased at 0.25%~4.00%concentration and increased at 0.125%concentration,and the apparent viscosity of the mixed solutions was greater than that of SLPs solution.The shear stress of SLPs solution and the mixed solutions increased with the increase of shear rate,and the shear stress of the mixed solutions was greater than that of SLPs solution,and increased with the increase of polysaccharide concentration.Tanδvalue was greater than 1 when the concentration of SLPs solution was 0.125%~2.000%,the valued was less than 1 under low frequency scanning at 4%and greater than 1 under high frequency scanning,and greater than 1 when the concentration of the mixed solutions was 0.125%~4.000%.When the concentration of SLPs solution was 0.5%~4.0%,the particle size distribution was mainly concentrated in 10~100 nm,and a few parts were in 100~1000 nm.Compared with SLPs solution,the particle size distribution of the mixed solutions with different concentrations was more uniform,a small amount of particle size concentrated in 100~1000 nm and most of them uniformly concentrated in 10~100 nm.It could be seen that oral processing could affect the rheological properties and particle size distribution of SLPs,and there was a certain synergy be

关 键 词：广叶绣球菌多糖 口腔加工 剪切流变特性 

分 类 号：TS201.2[轻工技术与工程—食品科学]