低亚硫酸钠添加对腐竹品质指标的影响  

Effect of Sodium Hydrosulfite Addition on Quality Indexes of Yuba

作　　者：赵秋艳[1,2] 裴琪 宋莲军 黄现青[1,2] 赵广山 乔明武[1,2] 李宁 张平安 ZHAO Qiuyan;PEI Qi;SONG Lianjun;HUANG Xianqing;ZHAO Guangshan;QIAO Mingwu;LI Ning;ZHANG Ping’an(College of Food Science and Technology,Henan Agricultural University,Zhengzhou 450002,China;Zhengzhou City Key Laboratory for Soybean Refined Processing,Zhengzhou 450002,China)

机构地区：[1]河南农业大学食品科学技术学院,河南郑州450002 [2]郑州市大豆深加工重点实验室,河南郑州450002

出　　处：《食品科技》2024年第2期271-279,共9页Food Science and Technology

基　　金：河南省重点研发与推广专项(182102110112);2022年河南省研究生联合培养基地项目(YJS2022JD16);河南省高校科技创新团队支持计划项目(23IRTSTHN023)。

摘　　要：在腐竹制作过程中,添加0%~0.12%的低亚硫酸钠,测定其对腐竹成膜速率、出品率、抗拉伸强度、断裂延伸率、色泽等膜特性的影响。结合腐竹中二氧化硫的残留量,确定低亚硫酸钠的适宜添加量。结果表明,随着低亚硫酸钠添加量的增加,腐竹的出品率、成膜速率、抗拉伸强度先增后降,断裂延伸率下降,L^(*)值增加。0.02%~0.06%添加量时,可提高腐竹的成膜速率、出品率、抗拉伸强度和L^(*)值。添加量为0.02%时,出品率、成膜速率最大;添加量为0.04%时,抗拉伸强度最大。添加低亚硫酸钠,会使腐竹膜的断裂延伸率下降,但在0.02%~0.04%的添加量下,腐竹膜的断裂延伸率为可接受状态。添加量为0.04%~0.06%时,所有腐竹颜色均处于良好状态。但0.06%添加量时,揭竹后期腐竹存在低亚硫酸钠超标的安全风险。综合考虑色泽、出品率、成膜速率、膜的机械特性与使用安全性,腐竹中适宜的添加量为0.04%。腐竹断裂延伸率受浆液中二氧化硫残留量的影响更大。During the production of yuba,the effects of 0%–0.12% sodium hydrosulfite on the film forming rate,yield,tensile strength,elongation at break,color of yuba were determined.The appropriate addition amount of sodium hydrosulfite was got according to the residual amount of sulfur dioxide in the yuba.The results showed that the yield,film forming rate and tensile strength of the yuba increased first and then decreased,the elongation at break decreased and L^(*) value increased with the increase of sodium hydrosulfite addition.When 0.02%–0.06% sodium hydrosulfite was added,the film forming rate,yield,tensile strength and L^(*) value of yuba could be improved.When the addition is 0.02%,the yield and film forming rate reached the maximum.When the addition is 0.04%,the tensile strength reached the maximum,the elongation at break of yuba was decreased when sodium hydrosulfite was added.The elongation at break of yuba was acceptable at 0.02%–0.04% addition,when 0.04%–0.06%sodium hydrosulfite was added,the color of yuba was good.There was a safety risk of excessive sodium hydrosulfite in the later period of yuba processing when 0.06% sodium hydrosulfite was added.Considering the color,yield,film forming rate,mechanical properties and safety of the film,the appropriate addition was 0.04%.The elongation at break of yuba was more affected by the residual amount of sulfur dioxide in the soybean milk.

关 键 词：腐竹 低亚硫酸钠 机械特性 成膜速率 色泽 

分 类 号：TS214.2[轻工技术与工程—粮食、油脂及植物蛋白工程]