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中国精品科技期刊2020
崔晓, 韦依侬, 刘胜男, 薛勇, 薛长湖. 可得然胶-魔芋胶复配对高温杀菌(120℃)鱼糜凝胶特性的影响[J]. 食品工业科技, 2018, 39(17): 212-216,224. DOI: 10.13386/j.issn1002-0306.2018.17.035
引用本文: 崔晓, 韦依侬, 刘胜男, 薛勇, 薛长湖. 可得然胶-魔芋胶复配对高温杀菌(120℃)鱼糜凝胶特性的影响[J]. 食品工业科技, 2018, 39(17): 212-216,224. DOI: 10.13386/j.issn1002-0306.2018.17.035
CUI Xiao, WEI Yi-nong, LIU Sheng-nan, XUE Yong, XUE Chang-hu. Effects of Curdlan and Konjac Gum Complex Gel Properties on the 120 ℃-heating Surimi Products[J]. Science and Technology of Food Industry, 2018, 39(17): 212-216,224. DOI: 10.13386/j.issn1002-0306.2018.17.035
Citation: CUI Xiao, WEI Yi-nong, LIU Sheng-nan, XUE Yong, XUE Chang-hu. Effects of Curdlan and Konjac Gum Complex Gel Properties on the 120 ℃-heating Surimi Products[J]. Science and Technology of Food Industry, 2018, 39(17): 212-216,224. DOI: 10.13386/j.issn1002-0306.2018.17.035

可得然胶-魔芋胶复配对高温杀菌(120℃)鱼糜凝胶特性的影响

Effects of Curdlan and Konjac Gum Complex Gel Properties on the 120 ℃-heating Surimi Products

  • 摘要: 本文研究了可得然胶-魔芋胶复配对高温杀菌鱼糜凝胶特性的影响。将可得然胶和魔芋胶按不同比例(3:7、5:5、7:3、9:1)复配,并添加到鱼糜中,通过测定破断力、破断距离、白度、持水力、热稳定性和微观结构等指标,研究复合体系的凝胶变化。结果表明:可得然胶-魔芋胶复配不利于鱼糜的凝胶形成,表现为破断力、破断强度降低,当体系中添加的可得然胶浓为2%时,凝胶破断力、破断强度最大,随着魔芋胶比例的增加而不断降低;持水力及白度的下降,规律与凝胶强度类似,持水力从92.4%降低至87.7%,白度从63.5降低至58.3;流变学、扫描电镜结果显示,蛋白网络结构交联弱化,但是随着复配胶中可得然胶比例的上升,鱼糜的凝胶特性逐渐优化,但依旧弱于2%可得然胶对鱼肉蛋白的影响。因此,可得然胶与魔芋胶的复配为拮抗作用,不能良好地改善鱼糜高温处理后的凝胶特性,但适当地增加魔芋胶,对于降低成本有一定意义。

     

    Abstract: In this paper, the effects of curdlan-konjac gum complex on the gel properties of surimi were studied. The curdlan and konjac gum were mixed in different proportions (3:7, 5:5, 7:3, 9:1) and added to surimi. The complex gel changes were determined by breaking force, breaking distance, whiteness, water holding capacity, thermal stability and microstructure as indexes.The results showed that, the two kinds of rubber compounding was not conducive to the formation of surimi gel, the breaking force, breaking distance decreased, when the system was added to the gel concentration of 2%, the breaking force and breaking distance reached maximums, then decreased with the increasing proportion of konjac gum. The decreasing of water and whiteness was similar to that of gel strength, which decreased from 92.4% to 87.7% and 63.5 to 58.3, respectively. Rheology and scanning electron microscopy showed that the protein network structure was weakened. However, with the increasing of the proportion of curdlan in the compound gels, the characteristics were gradually optimized, but still weaker than only 2% of curdlan. Therefore, it was obtained that the combination of curdlan and konjac gum did not play a good role in improving the gel characteristics after the high-temperature processing of the surimi. It was an antagonistic effect. However, the appropriate addition of konjac gum for cost reduction had some significance.

     

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