共查询到19条相似文献,搜索用时 860 毫秒
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《食品与生物技术学报》2021,(8)
正柠檬酸是全球生产量最大的有机酸,被广泛应用于食品、医药、化工和饲料等领域。我国已经成为全球最大的柠檬酸生产国和出口国。柠檬酸多以薯干、玉米和淀粉为生产原料经黑曲霉通风液体发酵产生,经提取、精制、浓缩和结晶等工序获得纯净的柠檬酸产品。据统计,每生产1 t柠檬酸产品可排放废水约40 t。 相似文献
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由于目前酒精发酵多采用玉米、薯干等为原料,这些原料经常受到某些因素的制约,如地域性价格高低不等,货源供应不稳定,产地局限性等.特别是近年来,玉米价价格不断上涨,致使国内众多酒精厂面临亏损.为此我们会同我国专门从事小麦淀粉分离技术研究的专家,用小麦面粉作原料,提取出高蛋白的活性小麦面筋粉(谷朊粉)出口创汇,淀粉浆作为酒精、食醋、柠檬酸、味精等发酵行业的基础原料或直接进入酒精、酿洒、食醋发酵车间,并采取连续糖化与液化等新工艺. 相似文献
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淀粉精原料直接深层发酵生产柠檬酸工艺的评价 总被引:2,自引:0,他引:2
<正> 我国柠檬酸工业目前仍普遍采用薯干粉粗原料深层发酵生产柠檬酸工艺,该工艺的技术特点及不足之处笔者曾进行过讨论。近年来,随着我国柠檬酸发酵技术水平的提高,新型工艺——淀粉精原料直接深层发酵生产柠檬酸工艺的应用已经提到日程 相似文献
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提高柠檬酸生产菌产酸的措施 总被引:3,自引:0,他引:3
柠檬酸是我国产量最大的有机酸,因其酸味强烈,且令人爽口愉快,因此被广泛应用于食品、化工、医药、化妆品等工业部门。利用薯干粉为原料直接深层发酵是我国柠檬酸生产的一大特色,能赋予柠檬酸生产独特的工艺是建立在我国优良的柠檬酸生产菌种的基础上,如黑曲霉5016、3008、C8027。T419等,都是经过诱变处理的突变菌株,在生产上都发挥了良好的性能,使发酵水平逐步提高,生产成本不断降低,创造了良好的经济效益。然而,在柠檬酸生产上,往往因为菌种在使用与保藏过程中,会逐渐地产生变异与衰老,即细胞内某些基因的负突变,发生了自… 相似文献
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Gurpreet Singh Dhillon Satinder Kaur Brar Mausam Verma Rajeshwar Dayal Tyagi 《Food and Bioprocess Technology》2011,4(4):505-529
Citric acid consumption is escalating gradually, witnessing high annual growth rate due to more and more advanced applications
coming to light. The present review discusses different aspects of fermentation and effects of various environmental parameters
and deals with the potential ways to increase the yield of citric acid to meet the ever-increasing demands of this commercially
important organic acid. Different techniques for the hyperproduction of citric acid are continuously being studied from the
past few decades and still there is a gap, and hence, there is an obvious need to consider new pragmatic ways to achieve industrially
feasible and environmentally sustainable bio-production of citric acid. The utilization of inexpensive agro-industrial wastes
and their by-products through solid-state fermentation by existing and genetically engineered strains is a potential route.
This review also deals with downstream processing considering the classical and advanced approaches, which also need significant
improvement. In situ product recovery method which leads to improved yields and productivity can be further optimized for
large-scale production and recovery of citric acid. 相似文献
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壳聚糖-柠檬酸复合物的制备和研究 总被引:1,自引:0,他引:1
壳聚糖与柠檬酸在一定条件下可生成壳聚糖 -柠檬酸复合物 ,实验结果表明电位滴定法可准确测定壳聚糖 -柠檬酸复合物中柠檬酸含量。反应过程中柠檬酸使用量越大 ,复合物中柠檬酸含量越高 ,壳聚糖 -柠檬酸复合物的粘度大于壳聚糖 ,并随柠檬酸含量增加而增大。 相似文献
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Faiez Alani Murray Moo-Young William Anderson Zakaria Bataine 《Food Biotechnology》2013,27(2):169-180
A new strain of Aspergillus niger isolated from soil and its mutant were used for citric acid production from carob under solid-state fermentation conditions. The parental strain produced 30 g/kg citric acid, while the mutant G4, selected after four rounds of gamma ray irradiation, produced 60 g/kg. Maximum citric acid production was obtained after 7 days of incubation, as the acid production was 34 and 64 g/kg for parental and mutant strains, respectively. The addition of 2% methanol increased citric acid production from the parental strain to 42 and the mutant G4 to 65 g/kg. Trace elements, namely Cu, Fe, and Zn, promoted the production of citric acid as the acid production from the parental strain increased to 46 g/kg and for mutant G4 increased to 73 g/kg after their addition. The optimum spore inoculum concentration for acid production was 107 ml?1, and the optimum pH was 5 for both parental and mutant strains. 相似文献
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本介绍了作应用色谱分离技术从柠檬酸发醇液直接分离提纯柠檬酸新工艺和柠檬酸树脂吸附脱色新工艺的研究。具有清洁生产,消除三废,降低成本,简化工艺流程,提高收率的特点。 相似文献
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研究柠檬酸亚锡二钠(DSC)对双孢菇罐头的护色作用。在双孢菇切片预处理和罐头汤汁中添加DSC与其他常用护色剂及其正交复合护色剂,测定产品的PPO残余酶活和褐变度BD等质量指标。在预处理阶段,较之植酸、柠檬酸、VC,DSC对双孢菇酶促褐变有更佳的抑制作用,预煮前以最佳复合护色剂(质量分数)0.2%柠檬酸,0.03%DSC,0.02%植酸,0.03%VC护色液浸泡预处理可有效防止菇片褐变;DSC用于双孢菇罐头汤汁比其他护色剂有更显著的褐变抑制效果,汤汁复合护色剂的最佳参数组合为(质量分数):0.03%DSC,0.02%植酸,0.3%CaCl2和0.1%柠檬酸,各因素对其影响程度为:DSC>植酸>氯化钙。DSC复合护色剂可有效抑制双孢菇罐头褐变,效果可与焦亚硫酸钠媲美,可作为蘑菇罐头中替代焦亚硫酸钠的新型安全高效护色剂。 相似文献
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Faiez Alani Murray Moo-Young William Anderson Zakaria Bataine 《Food Biotechnology》2007,21(2):169-180
A new strain of Aspergillus niger isolated from soil and its mutant were used for citric acid production from carob under solid-state fermentation conditions. The parental strain produced 30 g/kg citric acid, while the mutant G4, selected after four rounds of gamma ray irradiation, produced 60 g/kg. Maximum citric acid production was obtained after 7 days of incubation, as the acid production was 34 and 64 g/kg for parental and mutant strains, respectively. The addition of 2% methanol increased citric acid production from the parental strain to 42 and the mutant G4 to 65 g/kg. Trace elements, namely Cu, Fe, and Zn, promoted the production of citric acid as the acid production from the parental strain increased to 46 g/kg and for mutant G4 increased to 73 g/kg after their addition. The optimum spore inoculum concentration for acid production was 107 ml-1, and the optimum pH was 5 for both parental and mutant strains. 相似文献
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柠檬酸(citric acid,CA)是一种天然的有机酸,在成熟的柠檬、百香果、红树莓等柠檬酸型水果中含量高,导致此类水果酸感尖锐,加工产品的适口性、感官品质会受到不同程度的影响。柠檬酸可以被乳酸菌利用生成双乙酰、乙偶姻和丁二醇等香气化合物,也可以在酵母菌内转化为醇、乙醛酸、琥珀酸等多种代谢产物。不同的柠檬酸降解途径赋予柠檬酸型水果加工产品的品质和风味有显著差异。该研究详细地阐述了乳酸菌、酵母菌生物降解柠檬酸的途径及主要代谢产物,分析了pH、碳源两种因素对生物降解柠檬酸的影响及生物降解柠檬酸在果汁、果酒等加工中的应用,指出了限制乳酸菌和酵母菌用于生物降解柠檬酸的条件,旨在为柠檬酸降解的研究及应用提供理论依据和技术参考。 相似文献