大豆分离蛋白-多糖体系对甜菊糖苷苦味的抑制作用及复合乳液稳定性研究  

Inhibitory Effect of Soybean Protein Isolate-Polysaccharide System on Stevia Glycoside Bitterness and Stability of Composite Emulsion

作　　者：邢琳琳 朱力杰 Xing Linlin;Zhu Lijie(College of Food Science and Technology,Bohai University,Jinzhou 121013,Liaoning)

机构地区：[1]渤海大学食品科学与工程学院,辽宁锦州121013

出　　处：《中国食品学报》2022年第9期153-162,共10页Journal of Chinese Institute Of Food Science and Technology

基　　金：辽宁省自然科学基金项目(2021-MS-311);国家自然科学基金项目(31601510)。

摘　　要：为探究大豆分离蛋白(SPI)、大豆多糖(SSP)体系对甜菊糖苷(STE)苦味有无抑制效果,本文以SPI、SSP、STE的质量分数为因素,感官综合评分为指标,研究SPI-SSP复合体系对STE的抑苦效果,结果表明:当SPI质量分数为1.0%、SSP质量分数为0.3%时,对STE的抑苦质量分数可达0.5%,且乳液的抑苦效果优于水溶液;进一步对抑苦效果较优的乳液体系进行了界面张力、粒径大小、Zeta-电位及稳定性等指标的测试,得知随SPI质量分数的不断增大,界面张力值呈现较大幅度的下降,说明大豆分离蛋白-多糖-甜菊糖苷在油-水界面相互结合形成较为稳定的界面膜。综上所述当复合乳液中STE质量分数为0.5%、SSP质量分数为0.3%时,SPI质量分数高于1.0%时可以形成较为稳定、无不良苦味的O/W乳液。In order to explore whether soybean protein isolate(SPI)and soybean polysaccharide(SSP)system had in hibitory effect on the bitter taste of stevioside(STE),this paper took the quality scores of SPI,SSP and STE as factors and sensory comprehensive score as indicators to study the inhibitory effect of SPI-SSP composite system on STE.The results showed that:When the mass fraction of SPI is 1.0%and the mass fraction of SSP is 0.3%,the mass fraction of STE can reach 0.5%,and the inhibition effect of emulsion is better than that of aqueous solution.Further pain suppression effect of interfacial tension,the optimum emulsion system of the indices such as particle size,Zeta potential and stability test,that with the increase of mass fraction of SPI,the interfacial tension values presented a significant decline,shows that soybean protein isolated polysaccharide-stevia glycoside in oil-water interface combination form relatively stable interfacial film.In conclusion,when the mass fraction of STE and SSP in the composite emulsion is 0.5%and 0.3%,the SPI mass fraction higher than 1.0%can form a relatively stable O/W emulsion without adverse bitter taste.

关 键 词：大豆分离蛋白 大豆多糖 甜菊糖苷 苦味 乳液稳定性 

分 类 号：TS201.2[轻工技术与工程—食品科学]