共查询到20条相似文献，搜索用时 62 毫秒
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以柑桔和胡萝卜为主要原料,分别进行酒精发酵、醋酸液体摇瓶发酵、下胶澄清等方法制成柑桔胡萝卜保健果醋.试验结果表明:酒精发酵的适宜条件为:活性干酵母接种量1‰,发酵温度32℃,发酵时间24h;醋酸发酵的适宜条件为:醋酸菌接种量10%,发酵温度33℃,发酵时间48h;果醋下胶澄清:采用1%壳聚糖的澄清效果最佳. 相似文献
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李慧芸 《陕西教育学院学报》2012,(3):90-94
以火棘为原料,对采用固定化醋酸菌酿造火棘果醋的醋酸发酵工艺进行了研究。对发酵温度、接种量、酒精度三个影响因素进行正交试验,结果表明,固定化醋酸菌酿造火棘果醋的最佳工艺为:发酵温度34℃,接种量10%,酒精度7%。所得火棘果醋醋香浓郁,酸甜适度,香气自然、协调,是一种值得开发的保健果醋。 相似文献
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为开发黄桃保健醋酸饮料,对黄桃醋酸饮料的发酵工艺参数和口味调配进行了系统的研究.结果表明:酒精发酵的最适条件为发酵温度34℃,酵母接种量6%,可溶性固形物含量20%,发酵时间4d;醋酸发酵的最适条件为温度36℃,接种量10%,时间5d;成品果醋的最佳配比为原醋:蜂蜜:黄桃汁=15%:40/0:40%. 相似文献
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《潍坊教育学院学报》2019,(4):102-104
以青州弥河银瓜为原料,酿酒酵母和醋酸菌为发酵菌种研究银瓜酵素的生产工艺,研究银瓜酵素的生产工艺,以酵素发酵液最终脂肪酶、蛋白酶以及超氧化物歧化酶的酶活性为考评指标,综合感官评价评分等因素确定最适接种量为12. 5%,最佳接种比例为2:1。 相似文献
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《河南职业技术师范学院学报(职业教育版)》2020,(4)
以皇冠梨为主要原料,研究植物乳杆菌(Lactobacillus plantarum)和嗜酸乳杆菌(Lactobacillus acidophilus)发酵梨汁的最佳工艺条件.在单因素试验基础上应用响应面方法优化复合乳酸菌发酵梨汁工艺,探讨菌种比例、接种量、发酵时间和发酵温度等对发酵梨汁活菌数和感官评分的影响.结果表明:采用混合菌种发酵,植物乳杆菌和嗜酸乳杆菌体积比为1∶1时对梨汁发酵效果最好;响应面优化最佳工艺参数为复混合菌种接种量体积分数4%、发酵时间25 h、发酵温度37℃,此条件下得到发酵梨汁的活菌数和感官评分均达最高值,其值分别为(29.5±0.68)×10~8cfu/m L和93±0.92分. 相似文献
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《南阳师范学院学报》2019,(1):32-37
为得到更高品质的猕猴桃酵素饮品,以猕猴桃为主原料,红糖为辅料,采用自然发酵的方法,进行猕猴桃酵素生产工艺条件优化研究.设计单因素试验和正交试验,以酵母菌和乳酸菌接种量、发酵温度和发酵时间为影响因素对猕猴桃酵素生产工艺条件进行优化.结果表明,菌种接种量为影响猕猴桃酵素品质的主要因素.最佳工艺条件为:发酵时间为5 d,发酵温度为30℃,菌种接种量为4%.最佳工艺条件下生产的猕猴桃酵素糖度为4°Brix,酒精度为0. 25%vol(20℃),感官得分93分,感官指标、理化指标和微生物指标完全符合国家标准. 相似文献
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目的：研究酶法降解玉米芯的最佳工艺和酵母菌发酵的最佳工艺.方法：采用纤维素酶对玉米芯进行酶解,采用酵母菌对酶解液进行发酵.结果：酶解条件：纤维素酶0.6mL,pH值为5～6,温度40℃,Tween-80添加量为1%,微量元素的添加量为0.5%,酶解48h后还原糖浓度达到最大值;发酵条件：活化后酵母菌的接种量40mL,发酵温度30℃,发酵36h后,乙醇产量的最高.结论：在较佳的酶解和较佳的发酵条件下,可显著提高酶解率和发酵率. 相似文献
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刘培培 《读与写:教育教学刊》2021,(3)
果酒和果醋的制作,使用的主要微生物分别是酵母菌和醋酸菌。酵母菌和醋酸菌能被用来制作果酒和果醋,以理论和实践的有机结合,笔者基于生物学核心素养,试着谈谈《果酒和果醋的制作》的教学思考。 相似文献
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邱崇丙 《唐山师范学院学报》2014,(1):21-23
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。 相似文献
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《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help? 相似文献
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Rachel Zupek 《海外英语》2007,(11):40-41
我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了 相似文献
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YANGShiguo 《重庆大学学报(英文版)》2004,3(1):86-88
The problem on the geometrc inequalities involving an n-dimensional simplex and its inscribed simplex is studied. Aninequality is established, which reveals that the difference between the squared circumradius of the n-dimensional simplex andthe squared distance between its circumcenter and barycenter times the squared circumradius of its inscribed simplex is not lessthan the 2(n-1)th power of n times its squared inradius, and is equal to when the simplex is regular and its inscribed siplex is atangent point one. Deduction from this inequality reaches a generalization of n-dimensional Euler inequality indicating that thecircumradius of the simplex is not less than the n-fold inradius. Another inequality is derived to present the relationship betweenthe circumradius of the n-dimensional simplex and the circumradius and inradius of its pedal simplex. 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
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Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
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GUO Bao-feng Xiao Da-wei 《重庆大学学报(英文版)》2005,4(3):129-133
Using virtual reality for interactive design gives a designer an intuitive vision of a design and allows the designer to achieve a viable, optimal solution in a timely manner. The article discusses the process of making the Virtual Reality System of the Humble Administrator＇s Garden. Translating building data to the Virtual Reality Modeling Language （VRML） is by far unsatisfactory. This creates a challenge for computer designers to do optimization to meet requirements. Five different approaches to optimize models have been presented in this paper. The other methods are to optimize VRML and to reduce the file size. This is done by keeping polygon counts to a minimum and by applying such techniques as object culling and level-ofdetail switching. 相似文献