血豆腐质构感官评定与机械测定的相关性分析  

Improved Correlation between Sensory and Mechanical Measurement of Blood Tofu Texture

作　　者：李翔[1] 

机构地区：[1]重庆三峡职业学院,重庆404155

出　　处：《食品研究与开发》2016年第7期145-149,共5页Food Research and Development

基　　金：重庆市教委科学技术研究项目(KJ1403304)

摘　　要：为探索血豆腐的质构性质的机械评价方法,以猪血豆腐和鸭血豆腐为考察对象,测定其质构的感官指标和机械指标,通过对各指标之间的相关性分析,分析出各指标间的相互关系,并进一步利用SPSS 17.0中的回归拟合得到感官指标的预测模型。结果表明:剪切模式和穿刺模式的大多机械指标对除多汁性以外的所有感官指标都存在显著相关性,5个感官指标均可由机械指标拟合出回归方程,其中,多汁性由TPA模式的机械指标拟合,而其他感官指标均由剪切模式和穿刺模式的机械指标拟合,其拟合方程分别为:嫩度=5.266-0.026×破裂力;多汁性=12.5-0.348×可恢复功-6.822×内聚性+0.055×咀嚼性;Ln(细腻度)=4.572-0.529×Ln(剪切力)+0.118×Ln(剪切断裂形变);Ln(弹性)=4.951-1.556×Ln(破裂断裂性)+0.349×Ln(剪切断裂性);Ln(总体接受性)=4.279-0.752×Ln(剪切力)+0.12×Ln(剪切断裂形变)+0.473×Ln(破裂力)。In order to explore the evaluation methods of the textural nature of blood tofu by mechanical index,with pig and duck blood tofu as inspection object, this paper measured sensory index and mechanical index of their texture, analyzing the mutuality between the various indicators through the analysis of the correlation between the various indicators, and further obtains prediction model of sensory indicators using regression fitting in SPSS 17.0. The results showed that： most mechanical indicators of shear mode and puncture pattern were significantly correlated with all sensory indicators except juiciness; all the 5 sensory indexes could be fitted by the mechanical index of the regression equation. Among them, the juiciness was fitted by mechanical indicators of TPA mod, and other sensory indicators were fitted by mechanical indicators of shear mode and puncture pattern, The fitting equations were respectively： Tenderness =5.266-0.026 × Breaking force;Juiciness =12.5-0.348× Recoverable Work Done-6.822× Cohesiveness ＋0.055× Chewiness;Ln（ Exquisiteness） =4.572-0.529×Ln（ Shearing force） ＋0.118Ln（ 1st Fracture distance for shearing force）;Ln（ Springiness） =4.951-1.556×Ln（ 1st Fracture for breaking force） ＋0.349×Ln（ 1st Fracture for shearing force）;Ln（ Overall Acceptability） =4.279-0.752×Ln（ Shearing force） ＋0.12×Ln（ 1st Fracture distance for shearing force） ＋0.473×Ln（ Breaking force） 。

关 键 词：血豆腐 质构分析(TPA) 感官指标 相关性分析 回归分析 

分 类 号：TS251.93[轻工技术与工程—农产品加工及贮藏工程]