天然产物研究与开发 ›› 2024, Vol. 36 ›› Issue (12): 2074-2087.doi: 10.16333/j.1001-6880.2024.12.009 cstr: 32307.14.1001-6880.2024.12.009

• 开发研究 • 上一篇    下一篇

不同淀粉对魔芋葡聚糖凝胶特性的影响及复合凝胶的制备

齐   慧1,易春兰1,白菊红1,朱安妮1,2*,孙玉侠1,2,黄国保2,刘   亮3*   

  1. 1成都农业科技职业学院,成都 611130;2广西农产资源化学与生物技术重点实验室/玉林师范学院化学与食品科学学院,玉林 537000;3川北医学院,南充 637100
  • 出版日期:2024-12-26 发布日期:2024-12-26
  • 基金资助:
    成都市科技局项目(2022-YF05-00917-SN);广西农产资源化学与生物技术重点实验室开放基金(2021KF09);成都农业科技职业学院校级基金(23ZD001);川北医学院2024年本科教学工程项目(101/1017202418)

Effect of different starches on konjac glucomannan gel properties and preparation of composite gel

QI Hui1,YI Chun-lan1,BAI Ju-hong1,ZHU An-ni1,2*,SUN Yu-xia1,2,HUANG Guo-bao2,LIU Liang3   

  1. 1Chengdu Agricultural College,Chengdu 611130,China;2Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology,College of Chemistry and Food Science,Yulin Normal University,Yulin 537000,China;3North Sichuan Medical College,Nanchong 637100,China
  • Online:2024-12-26 Published:2024-12-26

摘要:

为探究不同淀粉及添加量对魔芋葡聚糖(konjac glucomannan,KGM)凝胶特性的影响,本研究选取了豌豆淀粉、红薯淀粉、玉米淀粉、土豆淀粉、木薯淀粉五种淀粉制备KGM/淀粉复合凝胶,通过质构仪、色差仪、感官评定、冷场扫描电镜分析其凝胶特性的变化,采用正交试验和综合评分设计优化KGM/淀粉复合凝胶配方。结果表明,这五种淀粉均能改善KGM凝胶感官性质、质构特性,提高凝胶强度和持水性(water-holding capacity,WHC),但不同淀粉间存在差异;通过优化配方,确定KGM/淀粉复合凝胶最佳配比为玉米淀粉添加量0.5%、豌豆淀粉添加量1.5%、土豆淀粉添加量1.5%,此条件制备的KGM/淀粉复合凝胶的持水率、凝胶强度、质构特性及色泽均良好,感官评分最高。通过扫描电子显微镜观察优化后的KGM/淀粉复合凝胶,三维结构更紧密,孔径更均匀,结构更稳定。因此,添加适量淀粉制备复合魔芋葡聚糖凝胶在一定程度上能够改善纯KGM凝胶现存的不足,可为其在魔芋凝胶食品的应用提供参考。

关键词: 魔芋葡聚糖, 不同淀粉, 正交试验, 凝胶特性

Abstract:

To investigate the effects of different starches and their additions on the properties of konjac glucomannan (KGM) gel,five kinds of starch (pea starch,sweet potato starch,corn starch,potato starch,and cassava starch were selected to prepare KGM/starch composite gels in this study.The changes of their properties were analyzed by texture meter,color difference meter,sensory evaluation and cold field scanning electron microscope.The formula of KGM/starch composite gels was optimized by orthogonal test and comprehensive score design.The results showed that these five kinds of starches could significantly improve the sensory properties,texture properties,strength and water-holding capacity(WHC)of KGM gel,but there were differences among different starches.By optimizing the formula,the optimal ratio of KGM/starch composite gel was determined to be 0.5% of corn starch,1.5% of pea starch,and 1.5% of potato starch which this condition water holding capacity,gel strength,texture characteristics and color of the KGM/starch composite gel prepared were on good form with the highest sensory score.The three-dimensional structure was more compact,the pore diameter was more uniform,and the structure was more stable of the optimized KGM/starch composite gel observed by scanning electron microscope.Therefore,the existing shortcomings of pure KGM gel to a certain extent can be improved by adding appropriate amount of starch to prepare compound konjac glucomannan gel,which can provide a reference for its application in konjac gel food.

Key words: konjac glucomannan, different starches, orthogonal experiment, gel properties

中图分类号:  TS213