HACCP在出口保鲜湿面生产中的应用

将HACCP体系应用于出口保鲜湿面的质量控制,通过对生产工艺流程中各工序进行危害分析,确立关键控制点及相应关键限值,并在生产中对关键控制点的危害进行严格监控,有效保证了出口保鲜湿面的质量.     

ACCP在出口保鲜湿面生产中的应用

将HACCP体系应用于出口保鲜湿面的质量控制，通过对生产工艺流程中各工序进行危害分析，确立关键控制点及相应关键限值，并在生产中对关键控制点的危害进行严格监控，有效保证了出口保鲜湿面的质量。     

制面工艺对保鲜湿面酸感影响的研究

加工工艺不仅影响保鲜湿面的口感,也影响保鲜湿面的酸感。该研究首先建立了保鲜湿面酸感的评价方法,对用相同的原料、不同的制面工艺所制作的保鲜湿面进行酸感评分、对比,发现酸液浓度以及面刀粗细均对面体的酸感有影响,且呈正相关。     

软包装即食湿面配方优化研究

通过正交试验极差分析和方差分析,确定用高筋粉生产即食湿面的最佳配方,并探讨了乳化剂、增稠剂、品质改良剂、微生物转谷氨酰胺酶、复合保鲜剂等对面条品质和贮藏效果的影响。所得的最佳配方为（％）：面粉100,水32．34,食盐2,复合碱0．2,乳化剂0．15,复合增稠剂0．25,品质改良剂0．2,复合保鲜剂0．1。     

海带绿豆保健鲜湿面的生产

在鲜湿面中加入海带浆、绿豆汁生产新型保健鲜湿面,所得海带绿豆鲜湿面具有天然色泽、表面光滑、口感好等特点,与普通鲜湿面相比营养丰富,且具有一定的保健功能.     

LL方便湿面生产线煮锅换热器的设计

LL方便湿面生产线是一种技术含量高、全自动、高效率的机电一体化产品,技术含量和工艺复杂程度都较现有方便面生产线复杂,而煮面锅是生产线中的关键设备,本文结合湿面生产线试制过程中的经验教训,从理论上阐述了煮面锅换热器的设计方法。     

澳麦面条色泽特性研究

选取澳大利亚标准白麦（ASW）作为研究对象,同时选择国内小麦优质品种郑麦9023作为色泽对比,对其小麦粉鲜湿面色泽,挂面色泽,鲜湿面煮后色泽等方面进行了研究。结果表明：ASW鲜湿面亮度值（L＊）很高,红度值（a＊）和黄度值（b＊）较低,鲜湿面色泽在12h内变化缓慢,色泽稳定性好。与国产小麦相比,ASW鲜湿面呈现亮白的感观特性和强大的抗褐变优势。ASW挂面色泽和鲜湿面煮后色泽与鲜湿面色泽保持一致,但是ASW煮后色泽与国产小麦的色泽差异明显缩小。     

胡萝卜湿面制作技术及品质影响因素的研究

本文以黑龙江农垦九三制粉有限公司提供的五种面粉为研究对象，将胡萝卜汁添加到五种面粉中；通过单因素试验、正交试验以及扫描电镜技术对制成的胡萝卜湿面的食用品质及贮藏期间的微观结构进行了测定和观察，筛选出胡萝卜湿面用粉，并采用正交试验方法对选出的面粉进行了品质改良，使制成的胡萝卜湿面的食用品质达到了要求。     

LL方便湿面生产线的设计原则及应用

LL方便面是一种新兴的绿色健康食品,被誉为是油炸方便面替代产品的"第四代方便面"。介绍了LL方便面及其生产工艺和生产线设计中值得注意的几个问题及设计原则,并以真空和面机组及压延机组设计方案的确定过程为例阐述了其具体应用。     

酒店如何建立交叉销售营销系统

本文通过对交叉营销理论的分析，系统讨论酒店应如何建立客户CRM系统，并根据自己在酒店工作的实际经验，提出了具体操作方法和步骤，同时对酒店应用交叉营销服务的优势进行了总结。     

新型香料1,1,3,3-四苄基-2,4,5-三硫环戊烷的合成及热分析研究

以乙酸酐为催化剂,中间体二苄基二硫醇和碘为原料,无水乙醚为溶剂,合成了新型香料1,1,3,3-四苄基-2,4,5-三硫环戊烷,产率为82.5%,用差示扫描量热法（DSC）和热重法（TG）研究其热性质,加热温度为50℃至500℃,加热速率10℃/min,测量氛围为静态空气.结果表明,在257.1℃开始分解,应在257.1℃以下保存,适用于汤料调味品而不适用于烧烤类调味.     

采用苯基荧光酮测定野蒜和食蒜中锗的含量

以2,3,7-三羟基-9-（2-羟基-5-对甲苯偶氮）苯基荧光酮为显色剂,测定了野蒜和食蒜中锗的含量,加标回收率在91．04％～102．83％,且该方法灵敏度和选择较高。     

蒸汽喷射压缩器的设计及实验研究

探讨了蒸汽喷射压缩器理论设计与实验结果的差异，分析了其原因，为精确设计计算喷射压缩器提供了一定的参考价值。     

2-(4′-乙基苯甲酰基)苯甲酸合成工艺研究

为了实现蒸煮助剂2-乙基蒽醌(2-EAQ)的合成绿色化,首次在缩合反应中,以水为溶剂,热处理过的明矾为催化剂,乙苯和苯酐为原料,制得2-(4′-乙基苯甲酰基)苯甲酸(BEA);BEA经过脱水闭环反应得到2-乙基蒽醌(2-EAQ);对BEA和2-EAQ进行定性分析.试验结果表明,合成BEA的最优反应条件是:苯酐加料速率0.12 g/min,反应温度40℃,搅拌速度520 r/min.     

高纯卵磷脂的制备研究

概述了近些年来有关制备高纯卵磷脂的研究成果和进展,对五种制备高纯卵磷脂的方法进行了简要的介绍和评述。     

仿生型信号分子对烟草硝酸盐、亚硝酸盐的抑制作用

硝酸盐、亚硝酸盐是烟草特有亚硝胺(TSNAs)的前体物。用源于取食烟草的寡食性昆虫口腔分泌物的仿生型信号分子(BSM)物质,在不同浓度下,对烤烟和白肋烟打顶后伤口进行涂抹处理,用比色法检测处理株和对照株烟叶中NO3-,NO2-的含量,并分析BSM对烟草NO3-,NO2-的影响。结果表明:BSM物质对烤烟和白肋烟打顶后叶片中NO3-,NO2-有不同程度的抑制作用;BSM处理对中部叶NO3-和NO2-含量影响大于上部叶、对NO3-的抑制作用强于NO2-;在白肋烟上,BSM对NO3-和NO2-含量的抑制程度与剂量有关,BSM的浓度越高,处理株中NO-和NO-含量越低。     

Cloning and expression of NAD+-dependent L-arabinitol 4-dehydrogenase gene (ladA) of Aspergillus oryzae

A gene of Aspergillus oryzae, ladA, which encodes L-arabinitol 4-dehydrogenase (EC 1.1.1.12), and its cDNA were cloned in Escherichia coli. The gene consisted of a 1209-bp coding region, interrupted by a 59-bp intron, which encoded a 382-amino-acid polypeptide (40,812 Da). The protein showed 67% identity to a well-studied L-arabinitol 4-dehydrogenase (Lad1) of Hypocrea jecorina. The cell-free extract of E. coli, which expressed ladA cDNA, showed L-arabinitol dehydrogenase activity with NAD+. It was also reactive for ribitol and xylitol.     

Therapeutic use of phage cocktail for controlling Escherichia coli O157:H7 in gastrointestinal tract of mice

To investigate the therapeutical use of phage mixture for controlling gastrointestinal Escherichia coli O157:H7 cells, in vitro and in vivo experiments were conducted. Three phages, SP15, SP21, and SP22 were selected from 26 phage stock screened from feces of stock animals and sewage influent. Addition of single or binary phage to the E. coli cell batch-culture reduced the turbidity of the culture. However, reascend of the turbidity due to the appearance of phage resistance cell was observed. On the other hand, addition of three phage mixture (SP15-21-22) did not produce reascend of culture turbidity under aerobic condition. Under anaerobic condition, slight reascend of culture turbidity was observed after SP15-21-22 addition. Chemostat continuous culture was operated under anaerobic condition to optimize the titer of phage cocktail and frequency of the addition for controlling E. coli cells. Five-log decrease of E. coli cell concentration after addition of phage cocktail of 10(9) Plaque forming unit (PFU)/ml was observed. However, reascend of cell concentration was observed after 1 d incubation. Repeated addition of phage cocktail was effective to reduce the cell concentration. Suspension of phage cocktail in the buffer containing 0.25% CaCO3 neutralized 9 times much more buffer of pH 2. Based on this in vitro experiment, phage cocktail (SP15-21-22) suspended in the buffer containing 0.25% CaCO3 was orally administrated to the mice in which E. coli O157:H7 cells was administrated in 2-d advance. E. coli and phage concentration in the feces was monitored for 9 d after phage addition. High titer of phage was detected in the feces when the phage cocktail administrated daily. E. coli O157:H7 concentration in the feces has been reduced according to the time period. However, difference of E. coli concentration in the feces of mice administrates with phage and in the control mice without phage addition became slight after 9-d test period. High titer of the phage settled down in the gastrointestinal tracts and reduced the concentration of E. coli cell. Repeated oral administration of SP15-21-22 was effective for rapid evacuation of E. coli O157:H7 from the feces and gastrointestinal tract of mice.     

Removal and recovery of lithium using various microorganisms

The accumulation of lithium by microorganisms was examined. Among the 70 strains of the 63 species tested (20 bacteria, 18 actinomycetes, 18 fungi, and 14 yeasts), a high lithium accumulating ability was exhibited by strains of the bacteria, Arthrobacter nicotianae and Brevibacterium helovolum. Lithium accumulation by A. nicotianae cells was strongly affected by the pH of the solution. The amount of accumulated lithium was maximum at pH 6. Cells immobilized with polyacrylamide gel also adsorbed lithium. They could be reused during repeated adsorptions, and adsorbed 548 micromol of lithium/g dry wt. cells. The adsorbed lithium was quantitatively and easily desorbed with 1 M hydrochloric acid using a column system.