芦荟酸奶生产工艺的研究

研究了芦荟酸奶的生产工艺条件，强化了牛孔的保健功能．结果表明，芦荟酸奶的最佳工艺条件为芦荟10％，蔗糖7％(均为质量分数)，接种量3％，培养时间5h。     

芦荟酸奶的研究

以牛奶、芦荟为原料经乳酸菌发酵制得芦荟酸奶,在保持普通酸奶原有风味的同时有芦荟的清凉感,且更具保健作用。确定了最佳工艺配方,为：鲜奶72％,脱脂奶粉2％,芦荟汁15％．蔗糖7％,果胶0．2％;接种量为4％。     

芦荟酸奶的研制

探讨了以鲜牛奶和芦荟凝胶喷雾干粉为原料,通过发酵生产芦荟凝胶酸奶的生产工艺,并比较了影响产品口味和稳定性的各种工艺条件。      

芦荟酸奶的研制

探讨了以鲜牛奶和芦荟凝胶喷雾干粉为原料,通过发酵生产芦荟凝胶酸奶的生产工艺,并比较了影响产品口味和稳定性的各种工艺条件。     

芦荟保健酸奶的研制

芦荟含有许多有益的营养素，包括维生素、矿物质、酶、油脂（脂肪）、氨基酸和具有治疗作用的粘多糖等；把芦荟中的营养素提取出来，添加到酸奶中去，利用传统工艺和现代技术制成芦荟保健酸奶，不仅具有降胆固醇、增强机体免疫力、抑制肿瘤等，还具有帮助营养素渗透肌肤、消炎、消肿、止痛、止痒等许多功效；具有一定推广价值和很好的市场前景。     

五味子芦荟复合酸奶的研制

以五味子、芦荟为原料,经预处理、打浆、均质、杀菌、发酵等工艺,通过单因素试验和正交试验优化,确定五味子芦荟复合酸奶的制备工艺。结果表明,最佳配方为五味子果浆添加量6%,芦荟果粒添加量6%,白砂糖添加量8%,接种量3%,复合稳定剂添加量0.4%,43 ℃发酵5 h,在此最佳配方条件下可制出组织状态良好、香气协调的五味子芦荟复合酸奶。     

凝固型芦荟酸奶的工艺研究

以奶粉、芦荟为主要原料,采用正交实验研制出凝固型芦荟酸奶生产的最佳工艺条件为:奶粉17g、芦荟汁7mL、白砂糖8%、接种量3%、发酵温度44℃、发酵时间3h。该产品口感柔和爽快、风味独特,是一种兼具营养保健与疗效作用的新型乳制品。      

双歧杆菌芦荟酸奶生产工艺的研制

以芦荟和纯牛奶为主要原料,以双歧杆菌、保加利亚乳杆菌和嗜热链球菌（2：1：1）为发酵剂,以白砂糖为调味剂,采取3种工艺流程,通过L9（34）正交试验确定出最佳工艺流程和工艺参数.以此工艺研制的产品,不仅可以保持传统型酸奶的风味,并且具有了双歧杆菌和芦荟的营养价值和保健功效,组织状态均匀,在0～5℃贮存2周以上.     

蜂蜜酸奶的研制

从球杆菌比例、接种量、稳定剂的用量及发酵温度等方面研究蜂蜜酸奶的制作条件，测定不同贮藏条件下蜂蜜酸奶的pH及酸度的变化，对最终产品进行感官及理化分析。用正交法优选出的蜂蜜酸奶制作适宜条件为：球杆菌比例为1：1、接种量1%、加入的琼脂量0.2%、发酵温度为42℃；贮藏实验结果表明在10℃以下的低温条件下，贮藏24d后酸奶的pH值不会产生大的变化；产品的感官及理化分析结果表明把蜂蜜添加到原料乳中进行发酵可生产出高品质的酸奶制品。     

芦荟挂面的研制

介绍在每500g面粉中分别添加5g、10g、15g和20g芦荟凝胶，制作芦荟挂面的加工工艺和参数。     

降糖酸牛奶的研制

针对各类型糖尿病人研制了发酵乳制品。内容包括各种营养物质的选择和添加、生产工艺参数、理化指标、感官指标的确定、酸度与粘度的对应关系、保质期的确定。通过测试降糖酸奶在贮存过程中的粘度随酸度和时间的变化，选出菌种型号（DSM-251）和工艺参数（在42℃下发酵4-5h及4℃下冷藏12h）。另外，它的研制成功不仅解决了糖尿病人这一特殊群体对发酵乳方面的需求，同时又起到了辅助治疗的作用。     

糯玉米酸奶的研制

以糯玉米和鲜牛奶的混合液作为发酵基质,研制出糯玉米酸奶。其最佳工艺条件为:糯玉米与鲜牛奶按1∶2混合,加入10%的蔗糖,接入4%的保加利亚杆菌和嗜热链球菌(1∶1),在42℃下发酵6h可得到品质较优的糯玉米酸奶。其最佳复合稳定剂为琼脂∶黄原胶0.15%∶0.15%。     

芦荟凝胶发酵乳工艺研究

研究芦荟凝胶发酵乳加工工艺。通过热烫灭酶、护色和酶解试验,确定了芦荟凝胶汁提取的最佳工艺条件;通过正交试验,确定了芦荟凝胶发酵乳的最佳工艺条件。结果表明,芦荟凝胶汁的最佳提取工艺为:90℃/5min热烫灭酶,0.05%IVc-Na 0.1?护色,0.05%Pe酶/45℃/1h酶解;芦荟凝胶发酵乳的最佳工艺条件为:发酵温度42℃、发酵时间4.5h、菌种接种量4.0%、蔗糖含量7.0%、芦荟凝胶汁含量10%。     

搅拌型燕麦酸奶的研制

以鲜牛奶扔和燕麦为主要原料,研究搅拌型燕麦酸奶的加工工艺条件.通过单因素试验和正交试验确定燕麦最佳糖渍条件和制作燕麦酸奶的最佳工艺参数.结果表明,燕麦最佳糖渍条件:糖渍时间为36 h,糖渍温度为70℃,蔗糖质童分数为50%;当蔗糖添加量为6%,接种量为4%,燕麦添加量为6%(均为质量分数)和在40℃下发酵时间为4h时即可得到优质的燕麦酸奶制品.     

酸奶高效生产菌株选育和营养成分优化

原始菌株SJ-243经紫外线、硫酸二乙酯、复合诱变处理,筛选出1株产酸较高的突变株S-204,并以正交试验为基础对其营养成分进行了优化.结果显示菌株S-204发酵产酸度达81.980T,产酸能力较出发菌株提高了41.05%.确定发酵剂中碳源、氮源和微量元素的最佳含量为(质量分数):葡萄糖5.0%,K2HP40.3%,MgSO40.1%,蛋白胨2.0%.     

The effect of inulin as a fat replacer on the quality of set-type low-fat yogurt manufacture

The influence of different levels of inulin on the quality of fat-free yogurt production was investigated. Inulin was added to milk containing 0.1% of milk fat to give inulin levels of 1, 2 and 3%. The experimental yogurts were compared with control yogurt produced from whole milk. The total solids content of milk was standardized to 14% by adding skim milk powder to the experimental yogurt. The chemical composition, pH, titratable acidity, whey separation, consistency, acetaldehyde and volatile fatty acidity contents were determined in the experimental yogurts after 1, 7 and 15 days. Sensory properties of the yogurts were evaluated during storage. The addition of inulin at more than 1% increased whey separation and consistency. Acetaldehyde, pH and titratable acidity were not influenced by addition of inulin. Tyrosine and volatile fatty acidity levels were negatively affected by inulin addition. With respect to the organoleptic quality of yogurt, inulin addition caused a decrease in organoleptic scores: the control yogurt had the highest score, and the lowest score was obtained in yogurt samples containing 3% of inulin. Overall, the yogurt containing 1% of inulin was similar in quality characteristics to control yogurt made with whole milk.     

Stability of the intense sweetener neohesperidine DC during yogurt manufacture and storage

The stability of the intense sweetener neohesperidine dihydrochalcone (DC) has been assessed during yogurt manufacture and storage. No significant decomposition was detected during and after milk pasteurization, the fermentation process and storage for 6 weeks at 3 °C. In addition, the maximum authorized concentration of neohesperidine DC did not affect the rate of acidification by lactic acid bacteria during the fermentation process. Taken together, these results suggest that neohesperidine DC can be added to milk products and will remain stable throughout pasteurization and fermentation processes.