油脂浸出技术与管理的进步

面对国内外在油脂浸出生产技术中的进展 ,重点论述了油脂浸出速度 ,油脂浸出工艺和设备的设计 ,油脂脱溶剂技术和饼粕的质量控制与检测 ,油厂生产自动化 ,浸出油厂的现代防火、安全管理及生产与操作中的进步和问题     

浸出车间降低溶剂消耗的密封技术措施

溶剂消耗是浸出油厂的重要技术经济指标，密封技术对降低浸出车间溶剂消耗起着重要作用。简述了垫片静密封、填料动密封的基本原理，对浸出工艺装置中的密封面进行了分析，提出了相应的技术措施。     

浸出油厂电气安全设计安装及自动报警装置的应用

通过对《爆炸和火灾危险环境电力装置设计规范》、《浸出制油工厂防火安全规范》等行业标准的理解,指出浸出油厂的电气设计、安装在安全方面应注意的问题,并对浸出油厂的有关电气防火、防爆、接地、防雷、自动报警的设计安装及应用等方面作了进一步说明。     

浸出车间尾气处理系统的改进与探讨

尾气中溶剂的回收是浸出油厂降低溶剂消耗的重要环节之一.介绍了尾气石蜡回收系统的工艺及工作原理.讲述了对工艺流程的改进方法以及由此所产生的效果,并对部分设备的制作和选型提出了合理化建议,以供浸出油厂和同行们参考.     

光电料位控制器

在油脂浸出工艺中,浸出器前设置的存料箱内,要求保持一定的料位高度,防止溶剂逸出,起到料封作用。为了实现料位自动控制,我厂利用光电开关控制原理,试制安装成功光电料位控制装置。该装置具有结构简单、安装方便、效果显著等特点。经近四年的实际生产应用,对降低溶剂损耗有明显的效果,可在中、小型浸出油厂推广应用。     

浸出油厂禁区建筑防火、防爆设计探讨

对浸出油厂总平面、禁区总平面及单体的建筑防火、防爆设计难点和问题进行了分析归纳,阐述了浸出油厂防火、防爆设计的关键点,供相关人员参考.     

在油厂建设和生产中有关安全生产问题的探讨

在2002年6月29日国家颁布<中华人民共和国安全生产法>第二十四条规定:单位新建、改建、扩建工程项目的安全措施,必须与主体工程同时设计、同时施工、同时投入生产和使用,安全设施投资应当纳入建设项目概算.按国家GBJ<爆炸和火灾危险环境电力装置设计规范>,浸出溶剂是Ⅱ类A级T3组爆炸性物质,浸出油厂属于特级防爆防火单位.     

浸出油厂跑冒溶剂的截留与回收

浸出油厂跑冒溶剂的截留与回收山东省惠民植物油厂张玉德浸出油厂用的溶剂是易燃易爆物质。国家安全部门及企业单位虽然对防火防爆要求很严，但是，一些跑冒漏现象在所难免。当空气中溶剂气体达１．２５％～４．９％相当于４７～１８４ｍｇ／Ｌ时，遇明火会引起爆炸；２５...     

浸出车间降低溶耗的措施

随着新技术广泛应用,浸出油厂日益向着规模化、自动化的方向发展。小到１００吨,大到３００吨的浸出油厂广泛采用了固定栅板浸出口器、负压蒸发、石蜡回收、ＤＴＤＣ（或ＤＴＣ）蒸脱机等先进工艺,使浸出油厂的指标有了很大的提高。溶剂消耗是浸出油厂的一项主要经济指标,它不仅在生产成本中占有较大比重,关系到浸出车间的安全,同时也能反映出一个企业管理水平的高低。浸出车间溶剂消耗主要有以下几个原因：１设备的跑、冒、滴、漏。如阀门、泵及设备自身的渗漏;２混合油蒸发过程中,随毛油带走的溶剂;３分水箱中的废水带走的溶剂;…     

浸出车间防爆电气安装中应注意的问题

根据国家GBJ<爆炸和火灾危险环境电力装置设计规范>,浸出油厂的浸出车间是爆炸的危险环境.浸出车间在开车、停车、正常运行和维修过程中有可能出现溶剂爆炸混合气体,但这种可能仅是短时的,溶剂库、溶剂卸料区也可能出现爆炸混合气体.因此,浸出车间及外围、溶剂库、溶剂卸料区被定为国家爆炸危险Ⅱ级区域.     

Textural Properties of Cold-set Gels Induced from Heat-denatured Whey Protein Isolates

A 9% whey protein (WP) isolate solution at pH 7.0 was heat-denatured at 80°C for 30 min. Size-exclusion HPLC showed that native WP formed soluble aggregates after heat-treatment. Additions of CaCl2 (10–40 mM), NaCl (50–400 mM) or glucono-delta-lactone (GDL, 0.4–2.0%, w/v) or hydrolysis by a protease from Bacillus licheniformis caused gelation of the denatured solution at 45°C. Textural parameters, hardness, adhesiveness, and cohesiveness of the gels so formed changed markedly with concentration of added salts or pH by added GDL. Maximum gel hardness occurred at 200 mM NaCl or pH 4.7. Increasing CaCl2 concentration continuously increased gel hardness. Generally, GDL-induced gels were harder than salt-induced gels, and much harder than the protease-induced gel.     

Occurrence of bisphenol-F-diglycidyl ether (BFDGE) in fish canned in oil

The levels of bisphenol-F-diglycidyl ether (BFDGE) were quantified as part of a European survey on the migration of residues of epoxy resins into oil from canned fish. The contents of BFDGE in cans, lids and fish collected from all 15 Member States of the European Union and Switzerland were analysed in 382 samples. Cans and lids were separately extracted with acetonitrile. The extraction from fish was carried out with hexane followed by re-extraction with acetonitrile. The analysis was performed by reverse phase HPL C with fluorescence detection. BFDGE could be detected in 12% of the fish, 24% of the cans and 18% of the lids. Only 3% of the fish contained BFDGE in concentrations considerably above 1mg/kg. In addition to the presented data, a comparison was made with the levels of BADGE (bisphenol-A-diglycidyl ether)analysed in the same products in the context of a previous study.     

Review of techniques to manufacture micro-hydrogel particles for the food industry and their applications

Microgels are ‘soft’ microscopic cross-linked polymeric particles that are being increasingly exploited in a variety of industries for rheology control, encapsulation and targeted delivery. They are valued because of the ability to tune their functionality to address specific applications in oil recovery, coatings, drug delivery, cosmetics, personal care and foods. Food microgels are typically biopolymer hydrogels in the form of microspheres, nanospheres (also called nanogels), spheroids and fibres. The utilisation of engineered microgels in foods has so far been limited, despite their great potential to address several needs in the food industry, including: satiety control, encapsulation of phytonutrients and prebiotics, texture control for healthier food formulations (e.g. reduced fat products), and targeting delivery to specific areas in the digestive tract. We review the scientific and patent literature on the utilisation and manufacturing methods for producing microgels with an emphasis on micro-hydrogels for food applications.     

12—A CRITIQUE OF SOME HYPOTHESES RELATING TO THE HETEROGENEITY OF THE HIGH-SULPHUR PROTEINS OF WOOL

Joubert and Burns prepared a large number of fractions from the high-sulphur proteins of wool and estimated their molecular weights and amino-acid compositions. Their data have been re-examined in order to look for statistically significant interrelations between amino acids and between the proportion of various amino acids and molecular weight. Statistical analysis of the data is also used to examine the credibility of some hypotheses concerning the mechanism of keratin biosynthesis and to provide further evidence for the existence of families of proteins within the high-sulphur fractions of wool.     

Contribution of European research to risk analysis

The European Commission's, Quality of Life Research Programme, Key Action 1—Health, Food & Nutrition is mission-oriented and aims, amongst other things, at providing a healthy, safe and high-quality food supply leading to reinforced consumer confidence in the safety of European food. Its objectives also include the enhancing of the competitiveness of the European food supply. Key Action 1 is currently supporting a number of different types of European collaborative projects in the area of risk analysis. The objectives of these projects range from the development and validation of prevention strategies including the reduction of consumers risks; development and validation of new modelling approaches; harmonization of risk assessment principles, methodologies, and terminology; standardization of methods and systems used for the safety evaluation of transgenic food; providing of tools for the evaluation of human viral contamination of shellfish and quality control; new methodologies for assessing the potential of unintended effects of genetically modified (genetically modified) foods; development of a risk assessment model for Cryptosporidium parvum related to the food and water industries; to the development of a communication platform for genetically modified organism, producers, retailers, regulatory authorities and consumer groups to improve safety assessment procedures, risk management strategies and risk communication; development and validation of new methods for safety testing of transgenic food; evaluation of the safety and efficacy of iron supplementation in pregnant women; evaluation of the potential cancer-preventing activity of pro- and pre-biotic ('synbiotic') combinations in human volunteers. An overview of these projects is presented here.     

Announcing a new international peer-reviewed journal:Food Science and Human Wellness now accepting manuscript submission in English

<正>We are pleased to announce the launch of a new international peer-reviewed journal-Food Science and Human Wellness,ISSN 2213-4530,which is an open access journal,produced and hosted by Elsevier B.V.on behalf of Beijing Academy of Food Sciences.Food Science and Human Wellness is an international peer-reviewed English journal that provides a forum for the dissemination of     

The Latest Data about Development of Chinese Printing Industry in 2013

In the 2014 China（Shanghai）International Printing Week,Director Wang Yanbin released the latest data about development of Chinese printing industry in 2013.According to statistics,in 2013,the total output value of Chinese printing industry exceeded 1trillion Yuan for the first time,reaching 1.03985 trillion Yuan.There were 105,000 printing enterprises in China,employees were 3.415 million.The total asset was 1.06247 trillion Yuan;     

The State Council Issued "Directory of Government Approved Investment Projects(2013 Edition)"

正On December 2nd,2013,the State Council issued the notification of"Directory of Government Approved Investment Projects(2013 Edition)"(hereafter referred to as"notification").It is pointed out in the"notification"that in order to further deepen reforms in investment systems and administrative examination and approval systems,simplify administrative procedures and delegate powers to lower levels,earnestly     

China textile machinery: taking off in progress

正Among the 1600 exhibitors who take apart in the ITMA ASIA+CITME2014 2/3 are Chinese manufactures.If the numerous figures failed to attract your attention,the increase of quality should draw your focus.To adopt the demand of developing textile machine market,domestic textile machinery enterprises now follow the slogan of"technology drives development"to enhance product competitiveness.Our domestic sellers will showcase product ranging from spinning,weaving,dyeing and printing,     

Top Ten News of China's Paper Industry 2013

On December 24th, 2013, the meeting on the selection of top 10 news of China＇s paper industry 2013 sponsored by 〈China Paper Newsletters〉 was held in Beijing. The yearly selection of the top l0 news, which began in 2000, has become a brand activity widely recognized in the industry thanks to the support from the authorities at all levels and public participation.