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研究乙醇和芦丁稳定的乳清分离蛋白-大豆油预乳化液作为脂肪替代物对低脂肉丸品质的影响。通过测定预乳化液的乳化稳定性、质构、黏度、粒径及流变特性,选择预乳化的最佳大豆油含量;以25%、50%、75%和100%比例对肉丸中的脂肪进行替代,以未替代的肉丸为对照组,通过测定蒸煮损失、色差、质构、气味、黏度、感官及抗氧化性,确定肉丸的最佳脂肪替代比例。结果表明:大豆油含量为72%的预乳化液乳化稳定性最好,凝胶形态良好且具有最大黏度;大豆油含量超过72%时,预乳化液的粒径增大,弹性模量下降;与对照组相比,脂肪替代比例为25%肉丸的蒸煮损失、色差(ΔE)、质构、黏度及感官得分均无显著变化,且氮氧化物、甲基类、硫化物等没有增加;贮藏9 d时,添加脂肪替代物的各组样品的硫代巴比妥酸反应物值显著低于未添加组(P<0.05)。因此,含大豆油72%的乳清分离蛋白预乳化液作为脂肪替代物最佳,肉丸中脂肪替代比例25%效果最好。 相似文献
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KCl部分替代NaCl腌制对干腌肉制品蛋白质水解和感官品质的影响 总被引:2,自引:0,他引:2
以猪后腿肉为原料,利用添加量20%~60%的KCl部分替代NaCl对原料肉块进行腌制,NaCl腌制为对照组,对干腌肉块的理化、蛋白水解和感官指标进行测定。结果表明:KCl替代NaCl比例在0~60%时,对产品蛋白水解指数、氨基氮、肽氮和丙氨酰胺肽酶活力均无显著影响;感官评定结果表明KCl替代比例不超过40%时,对产品的各项感官指标的影响均无显著差异(P>0.05);说明KCl替代NaCl最佳比例为40%,产品中NaCl含量降低至3.14%,且蛋白降解指标和风味不产生明显变化。 相似文献
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目的:通过感官评价正交试验确定软糖最佳配方。方法:以具有清咽利喉功效的药食同源食品薄荷、胖大海、罗汉果为原料,熬煮浓缩3款不同可溶性固形物含量的植物浸膏,经食品专业人员感官评定后确定最佳浸膏配方作为本研究软糖原料浸膏。以不同明胶、变性淀粉比例、糖醇液与糖醇粉比例以及原料浸膏添加比例为考察因素,以感官评分为考察指标,通过正交试验确定软糖最佳配方。结果:3款植物浸膏整体感官评分无明显差异,色泽、甜度、口感及风味评分显示3款植物浸膏风味项变异系数最大(>10%),因此选择风味项作为原料浸膏选择依据,最终选择试验3植物浸膏为本研究软糖原料浸膏。结论:本研究软糖最佳配比为明胶、变性淀粉比例7∶3,麦芽糖醇液、麦芽糖醇粉比例46∶4,原料浸膏添加比例7%。各因素对产品感官影响排序为明胶、变性淀粉比例>原料浸膏添加比例>糖醇液和糖醇粉比例。 相似文献
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介绍胶基糖对香精香料的要求,胶基糖的香味评价,香精对胶基糖生产的影响,胶基糖香精的质量问题和可能原因分析,香精水溶性的快速测定,一些胶基糖配方的设计思路和一些花色品种的研发创意。 相似文献
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介绍胶基糖对香精香料的要求,胶基糖的香味评价,香精对胶基糖生产的影响,胶基糖香精的质量问题和可能原因分析,香精水溶性的快速测定,一些胶基糖配方的设计思路和一些花色品种研发创意。 相似文献
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桃胶与阿拉伯胶都可用于食品增稠剂,本文对其透明度、稳定性、表面张力、保持香气能力等方面与阿拉伯胶进行了比较,并对流变曲线进行了测定,对温度、pH和电解质对它们粘度的影响进行了研究和比较。从研究结果来看,桃胶与阿拉伯胶的流变性质相似,甚至有些性质方面,桃胶要明显优于阿拉伯胶。 相似文献
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A Casas A
F Mohedano F García‐Ochoa 《Journal of the science of food and agriculture》2000,80(12):1722-1727
The viscosity of diluted guar gum solutions and the viscosity of xanthan and guar gum mixture solutions have been studied. Guar gum solutions showed pseudoplastic behaviour. Apparent viscosity increased with gum concentration and decreased with the temperature at which viscosity was measured. A maximum in the plot of viscosity versus increasing dissolution temperature was observed at 60 °C. This behaviour was related to differences in molecular structure of the polymers solved at different temperatures. Mixtures of xanthan and guar gum showed a higher combined viscosity than that occurring in each separate gum. This synergistic interaction was affected by the gum ratio in the mixture and dissolution temperature of both gums. The effect of polysaccharide concentration (1.0, 1.5 and 2.0 kg m−3), xanthan/guar gum ratio (1/5, 4/2, 3/3, 4/2 and 5/1) and dissolution temperature (25, 40, 60 and 80 °C for both gums) on the viscosity of solutions of mixtures were studied. The highest viscosities were observed when 2.0 kg m−3 gum concentration was used together with a ratio of xanthan/guar gum of 3/3 (w/w) and dissolution temperature of 40 and 80 °C for xanthan and guar gum, respectively. © 2000 Society of Chemical Industry 相似文献
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降解黄原胶与降解瓜胶在一定条件下共混,形成凝胶体系.通过对其流变特性进行研究,表明该体系具有显著的黏弹性和剪切变稀性.考察了总胶浓度、蔗糖、共混比例及降解食品多糖的分子量等因素对共混凝胶体系流变特性的影响.研究了该凝胶体系的本构方程,结果表明,修正Williamous-Oldroyld-4参数模型可确切描述凝胶体系的黏度曲线,计算值与实验值吻合良好. 相似文献
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Fenugreek gum (extruded and non-extruded) was substituted for wheat flour at 0%, 5% and 10% (w/w) and the rheological effects and breadmaking characteristics were determined. Bread containing fenugreek gum (FG) at 5% and 10% showed volumes and texture comparable with a control bread. Quality was high due to sheeting the dough twice as well as the use of the three-fold-turn puff pastry laminating method during processing of dough, instead of the standard rounding of dough. The three-fold-turn method is believed to have caused a higher incorporation of air into the dough as well as facilitated better distribution and incorporation of the fenugreek gum into bread dough. Extruding FG also improved its solubility in bread. Fenugreek gum (FG) resulted in an increase in dough farinograph water absorption compared with the control, but extruding the gum caused an even greater increase in water absorption when compared with the non-extruded gum. The addition of FG to bread dough caused an increase in G′ and G″. Starch pasting using RVA showed an increase in peak viscosity, final viscosity, breakdown and setback in a dose-related response when compared with a control. 相似文献
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将总浓度为1%的刺云实胶(TG)与黄原胶(XTG)按照不同的质量比复配,采用质构仪和流变仪对复配体系的凝胶特性和流变学特性进行测定,通过Carreau模型对流动曲线进行拟合分析,并利用电子扫描显微镜分析复配体系网络形成机理。结果表明:在质构分析中TG与XTG质量比为64时有最大的凝胶强度;在流变分析中TG与XTG质量比为64时呈现最大表观黏度并且在频率扫描和温度扫描中表现出最大的储能模量(G′)。因此,TG与XTG的最佳复配比例为质量比64。在pH为5~10时,最佳复配比例体系的黏度保持相对稳定;当添加盐离子(Na+、Ca2+)后,体系黏度降低,Ca2+降低的趋势更为显著。通过电子扫描显微镜(SEM)分析,表明在TG与XTG之间存在明显的协同增效作用,可形成良好的凝胶网络结构。 相似文献