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探讨了乙醇体积分数、卡拉胶质量分数以及卡拉胶与糖、盐共存时对牛奶酒体系稳定性的影响 .结果表明 ,随着乙醇体积分数的增加 ,牛奶酒体系粘度呈线性增加 ,当乙醇体积分数超过30 %时其稳定性被破坏 .卡拉胶的加入会对体系的稳定性产生一定的改善作用 ,而柠檬酸三钠的添加 ,能使这种改善作用明显提高 .添加质量分数为 10 %的蔗糖对稳定性不能起到改善作用 ,当柠檬酸三钠和蔗糖共同存在时 ,对体系的稳定性影响以蔗糖为主 .同时 ,在柠檬酸三钠存在下 ,将添加卡拉胶的牛奶酒在 4 0℃条件下进行加速贮藏试验 ,测定了这一过程中pH值、粘度和色度的变化 相似文献
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果汁型豆奶的生产及质量控制 总被引:3,自引:0,他引:3
在豆奶中加入酸性果汁,可改善豆奶的风味,但由于大豆蛋白的酸变性会影响豆奶的稳定性,为了解决果汁型豆奶的蛋白质稳定性问题,本文提出了对豆奶进行乳酸发酵等有效措施。 相似文献
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成改仙 《广州食品工业科技》2001,17(2):8-9
用不同的抗氧化剂对豆奶中脂肪氧化酶活性的影响进行了比较,并对各种抗氧化剂进行了不同水平试验,实验表明,在没食子酸丙酯(PG),HBA,BHT,抗坏血酸(AA)中,PG对抑制豆奶中脂肪氧化酶活性方面效果更好,EDTA,柠檬酸(CA),AA与PG结合实验表明,PG中加入CA,AA,能够增强PG对脂肪氧化的抑制效果。 相似文献
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对不同的抗氧化剂对豆奶中脂肪氧化酶的活性的影响进行了比较,并对各抗氧化剂进行了不同水平的试验,实验表明,在没食子酸丙酯(PG)、BHA、BHT、抗坏血酸(AA)中,PG对抑制豆奶中脂肪氧化酶活性方面效果更好。EDTA、柠檬酸(CA)、AA与PG结合实验表明,PG中加入CA、AA,能够增强PG对脂肪氧化酶的抑制效果。 相似文献
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以浓缩枣汁、大豆为原料研制复合蛋白饮料,探讨了复配乳化增稠剂对红枣豆奶稳定性的影响。在单因素的实验基础上,应用正交实验确定复合增稠剂的最佳配比和添加量范围,通过Box-Benhnken响应面法考察了复合增稠剂、蔗糖脂肪酸酯、蒸馏单硬脂酸甘油酯及其交互作用对红枣豆奶稳定性的影响,利用软件Design Expert 8.0.6.1对实验数据进行回归分析,得到二次多项式回归方程预测模型。结果表明,采用复合增稠剂0.6%(黄原胶∶瓜尔豆胶∶羧甲基纤维素钠之比为4∶2∶3)、蔗糖脂肪酸酯0.10%、蒸馏单硬脂酸甘油酯0.04%组合成的稳定剂能有效提高红枣豆奶的稳定性,产品口感细腻,品质最佳。 相似文献
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Pattavara Pathomrungsiyounggul Alistair S. Grandison Michael J. Lewis 《International Journal of Food Science & Technology》2010,45(11):2234-2240
Soymilk fortified with 25 mm Ca (Ca carbonate, Ca citrate, triCa phosphate, Ca gluconate or Ca lactate) was compared with the properties of unfortified soymilk (control). Calcium carbonate, Ca citrate and triCa phosphate did not significantly affect [Ca2+], absolute viscosity and particle size of soymilk, but Ca gluconate and Ca lactate significantly increased these properties. The pH of soymilk was significantly increased by adding Ca carbonate but significantly reduced by adding Ca gluconate and Ca lactate. Dry sediment of soymilk increased significantly with the addition of all Ca salts excluding triCa phosphate. Freezing point depression increased significantly only for Ca gluconate and Ca lactate, mainly owing to their higher solubility. 相似文献
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孙永杰 《食品安全质量检测学报》2015,6(7):2770-2774
目的为了赋予果奶饮品的营养性和多样性,本实验通过将香蕉和燕麦与牛奶复合的工艺,研制出一款营养丰富、健康方便的果奶饮料。方法采用单因素试验和正交实验,对香蕉燕麦复合型果奶生产工艺及其稳定性进行研究。结果通过研究表明,当香蕉浆添加量为5.3%,蔗糖添加量为2.12%,燕麦浆添加量为3.9%,柠檬酸添加量0.4%时,得到最佳优化水平;稳定剂在添加总量为0.6%的前提下,三种复合稳定剂的比例为0.2%果胶:0.2%CMC-Na:0.15%柠檬酸三钠=1:1:1时,能够获得良好的稳定效果。结论采用本研究的方法制作得香蕉燕麦复合型果奶,口感细腻、风味突出。 相似文献
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为增加豆浆的稳定性,采用测定豆浆稳定系数、表面张力及进行感官评分的方法筛选适合用于豆浆样品的增稠剂和乳化剂,确定了最适宜的豆浆增稠剂和乳化剂的种类及其用量。经过黄原胶、刺槐豆胶、卡拉胶、结冷胶和海藻酸钠的单因素实验,黄原胶和刺槐豆胶的复配实验及黄原胶、刺槐豆胶和乳化剂(单硬脂酸甘油酯和蔗糖脂肪酸酯)的正交实验得出以下结果:黄原胶和刺槐豆胶对增加豆浆稳定性有着较好的效果,当它们的质量浓度分别为0.2g/L时,其稳定系数分别为0.737、0.742。单硬脂酸甘油酯和蔗糖脂肪酸酯复配后HLB=8、质量浓度为2g/L时,豆浆样品的稳定性最好,表面张力为41.7mN/m。当黄原胶、刺槐豆胶、乳化剂质量浓度(单硬脂酸甘油酯质量∶蔗糖脂肪酸酯质量=7∶4)分别为0.14、0.14、2g/L时豆浆的稳定性最好,此时豆浆样品的稳定系数为0.879,表面张力为41.6mN/m,感官评分为96。 相似文献
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低活性胰蛋白酶抑制剂发酵豆乳的研制 总被引:1,自引:0,他引:1
采用碱性蛋白酶水解豆乳,可使其中的胰蛋白酶抑制剂添生降低12.8%,水解时间采用6min。以水解豆乳为主要原料,添加少量鲜牛乳、白砂糖、草莓汁和柠檬酸,采用乳酸菌发酵制成低胰蛋白酶抑制剂活性的发酵豆乳,其最佳配方为:水解豆乳与鲜乳比8:2,白砂糖8%,草莓汁10%,柠檬酸0.15%。 相似文献
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In the current research, soymilk was fortified with 2,000 mg L?1 calcium (Ca) through direct addition and microencapsulated Ca. There have been no reports regarding Ca-fortification of soymilk by W/O/W double-emulsion method. In order to inhibit Ca–protein interaction and improve soymilk stability, different concentrations (0, 10, 15, 22, 25 and 30 g L?1) of potassium citrate were added to soymilk samples as a metal-chelating agent (CA). Adding CA caused an undesirable aftertaste. Thus, in order to solve this problem, Ca was microencapsulated using water-in-oil-in-water (W/O/W) double-emulsion method, and coacervates were formed by means of gelatin–agar electrostatic interaction. Physicochemical properties of pasteurized soymilk including pH, phase separation index, sedimentation, viscosity, conductivity and color parameters (L, a, b and ΔE) were assayed over storage time. CA addition led to reduction in phase separation index, sedimentation, viscosity and increase in conductivity. However, microcapsule addition showed no phase separation so that soymilk stabilization was achieved; still, viscosity, conductivity and ΔE parameters were increased by Ca microcapsule addition. Microencapsulation was a proper Ca-fortification method in soymilk regarding higher stability of the final product over pasteurization shelf life. 相似文献
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采用微波消解——等离子体发射光谱法测定果汁及其饮料中的钾和磷,两种元素标准曲线线性关系良好,相关系数均在0.999以上,加标回收率在96%-108%之间,RSD值均低于5%。该方法适用于果汁及其饮料中钾和磷的测定。 相似文献
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Maria Saarela Ilkka Virkajrvi Hanna-Leena Alakomi Pia Sigvart-Mattila Jaana Mtt 《International Dairy Journal》2006,16(12):1477-1482
We investigated the stability of differently produced (variables being fermentation time, pH during drying, and cryoprotectant) freeze-dried Bifidobacterium animalis subsp. lactis E-2010 (Bb-12) cells in fruit juice and low-fat milk. In addition, the effect of the food matrix on the acid and bile tolerance of the cells was studied. Cells produced in different ways had comparable stability in milk, whereas in juice, sucrose-protected cells survived better than reconstituted skim milk-protected cells. The acid and bile tolerance was better in cells added to milk compared with those in phosphate buffered saline or juice. Despite good culturable stability in milk the acid and bile tolerance of cells decreased during the storage. Apparently, culturable stability data alone do not give an accurate enough prediction of the probiotic functionality in adverse conditions (e.g. survival in acid and bile stress). When choosing a cryoprotectant for a probiotic also the stability in target food applications should be considered. 相似文献