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采用无线监测管控系统制备高温大曲,全程跟踪大曲发酵和贮存过程的理化指标和微生物区系,与传统高温大曲进行对比分析。结果表明:2种大曲在培菌过程中的温度变化趋势较为一致,均符合高温大曲培曲工艺特点;在大曲发酵和贮存阶段,两者各项理化指标的变化趋势相似,影响新型高温大曲的主要理化指标为酸度、还原糖含量、糖化酶活力和酸性蛋白酶活力,影响传统高温大曲的主要理化指标为淀粉含量、液化酶活力、中性蛋白酶活力、发酵力和酯化力;新型高温大曲中的微生物数量基本上总是高于传统高温大曲,尤其以细菌与产酸菌含量偏高。 相似文献
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《酿酒科技》2016,(11)
浓香型白酒酿造过程中,原料是前提,大曲是基础,工艺是关键;其中,大曲作为"糖化、发酵、生香"等功能为一体的复合微生物制品,是传统固态发酵大曲酒的重要物质基础和保障,是酿酒发酵的原动力。制曲工艺过程的实质是通过培菌制曲过程不同阶段控制温度、湿度、空气、微生物种类等因素以实现有益酿酒微生物在曲料上的生长繁衍,促进微生物酶的代谢与积累。结合金种子酒业中高温大曲培菌制曲的生产实践,并以成品曲的感官及理化指标为依据,分析与探讨了中高温大曲培菌制曲过程中的原料选择与粉碎,加水拌料与成型制坯,入房培菌及其管理,排潮、翻曲与合房拢堆等关键控制点,以及对成品大曲质量的影响。 相似文献
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以偏高温包包曲制作工艺为基础,在传统小麦制曲原料中,分别按小麦重量的0%,5%,10%,15%,20%添加含冠突散囊菌的黑茶培养物制曲坯,研究培菌管理过程中主要微生物类群、酶活力和常规理化指标的变化。结果表明:在培菌管理的28 d内,与传统大曲对照组相比,各黑茶菌添加组的微生物类群数量(霉菌、酵母、细菌和冠突散囊菌)、常规理化指标(培菌温度、酒曲水分、酸度和淀粉含量)和酶活力(发酵力、液化酶活力和糖化酶活力)均有不同程度的变化,且各黑茶菌添加组之间也呈不同程度的变化。在传统偏高温包包曲中,采用含冠突散囊菌的黑茶菌培养物进行强化,在培菌管理结束的第28天入库时,15%和20%的黑茶菌添加组的霉菌、细菌和酵母数量均与传统大曲对照组之间差异显著(P<0.05),说明添加黑茶菌能显著促进大曲中霉菌的生长繁殖、抑制大曲中细菌和酵母菌的生长繁殖;同时,15%和20%的黑茶菌添加组的液化酶活力和糖化酶活力均与传统大曲对照组之间差异显著(P<0.05),说明添加黑茶菌能显著提高大曲的液化酶活力和糖化酶活力。 相似文献
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目的对冬夏两季乌鲁木齐市部分餐饮企业在食品生产中的微生物污染进行检测并分析餐饮的污染原因。方法通过对冬夏两季乌鲁木齐市150家餐饮中小企业生产餐饮共372份样品进行随机抽样,检测和分析样品中的菌落总数、大肠菌群、金黄色葡萄球菌和霉菌(糕点类),与国家标准进行比较。结果冬夏两季采集的样品总合格率为分别为70.5%和47.7%,夏季样品合格率明显低于冬季(P0.05),不同样品间比较发现,熟肉制品合格率最低。结论乌鲁木齐市部分餐饮企业餐饮微生物污染情况严重,尤其是夏季熟肉制品、饮品的微生物不合格率明显高于冬季,这表明相关餐饮企业在加工和保存过程中存在不符合相关卫生标准的操作,需要相关部门采取更多的措施以保障食品安全。 相似文献
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在全球经济一体化、信息资讯透明度、以及产品同质化的程度越来越高的今天,激烈的市场竞争无处不在,最典型的是很多的人还是挥舞着低价竞争这把双刃剑在到处砍杀,既伤了别人也伤了自己.…… 相似文献
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Iu P Kukel' 《Voprosy pitaniia》1983,(5):42-45
Morphological and morphometric studies of the small intestine of albino rats have shown that its villi undergo cyclic changes. These changes involve the death, growth and maturation of the villi. Digestion intensifies proliferative processes in the small intestinal mucosa. The data obtained support the conception that the death of the villi is a morphological expression of secretion (excretion) and absorption in the small intestine. 相似文献
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世界主要产棉国标准对比分析 总被引:1,自引:0,他引:1
基于不同国家在种植、生产、气候、文化环境方面的差异,世界上主要产棉国棉花标准也存在差异性;而棉花物理性能本身和全球一体化棉花交易规则决定了棉花标准在很多方面必须是相同或相近的。为了有效地管理棉花质量和控制棉花标准,达到或趋近一个公平交易原则,为了优化国际棉花采购,比较并控制混配棉及棉花、棉纱的质量,介绍了棉花标准制定的意义,多方面分析了美国与中国细绒棉质量标准存在的异同点以及两国细绒棉标准发展的趋势,比较了主要长绒棉生产国棉花现行标准的异同点,为未来世界棉花标准制定达成共识提供了基础保证,为全世界棉花贸易纠纷有效处理提供了仲裁依据,有利于促进全世界棉花质量的改进和提高。 相似文献
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M. Satoh S. Mori H. Nojiri N. Yoshizuka Y. Takema 《International journal of cosmetic science》2005,27(2):133-134
In this study, age-associated changes in facial skin, cosmetologically critical factors, were studied in terms of local subcutaneous fat tissue. The subjects were 98 Japanese females evenly chosen from their teens to 70s. On each subject, the thickness of subcutaneous tissue was determined by the ultrasonic B mode method on four facial sites, forehead, orbit, cheek, and mandible. Age-association of the tissue thickness was facial site-dependent. In the orbit, the subcutaneous tissue became thicker with age, whereas it showed a tendency of thinning in the forehead. No clear age-association was observed in the cheek or the mandible. To analyze the age-association further, the data were stratified into 'lean group' and 'obese group' based on their BMI, and subjected to multiple regression analysis. The age-association in the orbit was much more distinctive in the lean group than in the obese group. 相似文献
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推动我国人造板生产企业成本上升的因素分析 总被引:3,自引:0,他引:3
2008年不断走高的物价水平将推动人造板生产企业的成本大幅上升,高成本时代的来临,对于资源依赖型的人造板生产企业成本和利润将产生重大影响.本文详细分析了推动人造板生产企业成本上升的主要因素,为人造板生产企业应对高成本时代的挑战提供参考. 相似文献
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Quinn BA Hayes MA Waelchli RO Kennedy MW Betteridge KJ 《Reproduction (Cambridge, England)》2007,134(1):161-170
During the third week of pregnancy, the equine conceptus is enclosed within a capsule, the glycan composition of which changes at around day 16 (ovulation = day 0) when the conceptus becomes immobilized (fixed) in the uterine lumen. Our objective was to characterize the process of fixation by identifying changes in major capsule-associated proteins. Individual equine conceptuses (n = 55) were collected transcervically by uterine lavage between days 13.5 and 26.5. Major proteins extracted from capsules were compared with those in fluids from the uterus and yolk sac by SDS-PAGE. Until day 14, a major capsule-associated protein that migrated at approximately 10 kDa was identified by N-terminal sequencing as equine beta2 microglobulin (beta2M). During fixation, beta2M in the capsule underwent limited proteolysis to an approximately 8 kDa form lacking nine amino acids from the N terminus, and was subsequently degraded. Expression of beta2M mRNA was detected in the yolk-sac wall tissues and endometrium between days 13.5 and 17.5. During this period, beta2M in the capsule was evidently not part of a complex with major histocompatibility complex class 1 heavy alpha chain bands because these were undetectable in the capsule and uterine lavage. Uterocalin (p19) was detected in uterine lavage and capsule throughout fixation, but in yolk-sac fluid only before fixation. These studies indicate that intact beta2M is a major protein associated with the embryonic capsule before fixation, after which it undergoes limited proteolysis to a truncated approximately 8 kDa form that remains in the capsule after the conceptus is immobilized. 相似文献