河Tun食用毒性评价与安全措施研究

为了充分利用河Tun资源，开展了河Tun安全利用课题研究。利用高效液相色谱法和竞争抑制性酶联性免疫吸附试验（ELISA）方法对安全利用过程中的河Tun毒素进行检测，同时引入危害分析和关键控制点（HACCP）系统，对河Tun食品从原料生产到成品的各环节进行危害分析，确定关键控制点，制订了原料接收，活鱼暂养，加工去毒，河Tun制作，以及环境卫生的控制标准和措施，结果表明，河Tun的分布具有地域差异性，河Tun体内毒素分布很不均匀，主要集中在肝，卵巢，皮肤等部,生变化明显，个体差异显著，运用该研究成果自1995年至2002年进行人体试食试验以来，未发现一例中毒症状和体征，各项试验证明，经去毒工艺处理的河Tun是安全的，经食用后不会引起河Tun毒素中毒，这对于保证河Tun资源的安全利用有着重大的意义。     

鲀毒鱼类中河鲀毒素直接竞争抑制性酶联免疫吸附试验测定方法的研究

为检测毒鱼类中的河毒素 ,建立了用抗河毒素单克隆抗体检测河样品中河毒素的直接竞争抑制性酶联免疫吸附试验 (ELISA)方法。结果表明 ,直接ELISA法较间接ELISA法灵敏 ,最低检出浓度为 0 1ng mL(每检测孔 0 0 1ng) ,线性范围为 5～ 5 0 0ng mL ,方法的加标回收率为73 0 %～ 118 0 %。本法与传统的小鼠生物试验相比 ,两种方法的测定结果之间在统计学上差异无显著性 (配对t检验 ,P >0 1) ,并具有良好的相关性 (r =0 94 4)。对来自江苏省东海和长江水域的河样品的毒力进行了测定 ,结果表明本方法简单、快速、灵敏 ,完全可以满足实际工作的需要     

HACCP体系在供港熟鸡加工中的应用

运用危害分析和关键控制点(HACCP)体系对熟鸡加工过程各个环节进行危害分析,并确定关键控制点。关键控制点为:原料验收、掏内脏、蒸煮、金属探测。针对每个关键控制点制定相应的关键限值和监控措施。通过HACCP体系的应用,供港熟鸡的质量和安全得到有效控制。     

加拿大原料乳安全生产及其质量控制体系

食品安全成了当今世界极度关注的重点.随着我国乳业的迅速发展,我国乳品生产安全的问题也越来越引起国家职能部门、专家和企业的关注.而乳制品的质量在很大程度上取决于原料乳的质量.加拿大等国在原料乳质量控制领域中进行了深入而实用的研究工作,制定了一套以HACCP为基础的有效的质量安全操作规范,极大的促进了原料乳的发展和提高了原料乳的质量.加拿大牛奶生产过程中的质量控制主要包括员工培训,危害性及其来源,牛奶生产设施,水和饲料,动物健康和生物防护,医药、治疗和后遗症预防,挤奶管理,利用乳牛生产牛肉,纠偏措施和肉乳生产纠偏指南等10个部分.本文重点介绍原料乳生产过程中的危害及其控制.原料乳生产过程中的危害性污染源主要来源于化学污染、生物污染和物理污染.其质量控制主要通过最佳管理实践(Best Management Practices,BMPs)、危害分析和关键控制途径(Hazard Analysis Critical Control Point(HACCP)Approach)、在HACCP之内的关键控制点(Critical Control Points(CCPs)within HACCP)和标准的操作程序(Standard Operating Procedures,SOPs)实施.     

粮油食品中黄曲霉毒素检测技术研究

<正>黄曲霉毒素是一种剧毒和强致癌物质，极易出现在湿热的粮食和饲料中，是霉菌毒素中毒性最大、对人类健康危害极大的一类毒素。花生、无花果、大米、小麦、芝麻、香料、小米等作物在储存期间最容易受到真菌感染，若以被污染的原料生产食品，那么这些食品中也含有黄曲霉毒素，即便含量较低，也会对人类和牲畜产生危害。因此，对粮油食品与饲料中的黄曲霉毒素进行鉴定，确定其含量，是确保食品安全的关键。本文将粮油食品作为研究对象，探究了黄曲霉毒素检测技术的应用。     

HACCP体系在热风干制荔枝果肉加工中的应用

为了确保热风干制荔枝果肉的品质和安全,应用危害分析与关键控制点(HACCP)原理对荔枝果肉热风干制加工过程中各工序及其潜在危害进行分析,确定了原料、热烫、护色、热风干燥、检验、包装、运输销售7个工序为关键控制点,建立了相应工序的关键控制临界值,并制定了危害分析表和HACCP工作表。     

HACCP质量控制体系在圣女果脯生产中的应用

一、危害分析关键控制点的定义危害分析关键控制点(HACCP)是一个保证食品安全的预防性技术管理体系。它运用食品工艺学、微生物学、质量控制和危险性评估等方面的原理和方法,对整个食品链,即食品原料的种植、收获、加工、流通和消费过程中实际存在和潜在的危害进行危险性评估,找出影响最终产品质量的关键控制点,并采取相应的预防性控制措施,在危害发生之前就控制它,从而使食品达到较高的安全性。二、HACCP系统的基本原理1.HACCP包含7项基本原理(1)进行危害分析和预防措施分析。(2)确定关键控制点(ccp)。(3)建立关键限值。(4)ccp点的监…     

HACCP体系在盐焗乳鸽生产中的应用

为保障盐焗乳鸽产品质量安全,运用HACCP (hazard analysis critical control point)原理对盐焗乳鸽生产工序进行危害分析,确定关键控制点,并提出控制危害的有效措施。确定4个关键控制点:原料肉及辅料验收、腌制、金属探测、灭菌,在此基础上制定HACCP计划表。     

家禽饲料中有毒有害物质的分类及控制要点

将饲料中有毒有害物质从天然毒素和非天然毒素两方面进行分析,讨论了不同种有毒有害物质对家禽机体造成的危害,最后总结了饲料及原料中有毒有害物质的控制要点,以期得到安全的饲料及饲料产品。     

植物油污染黄曲霉毒素的去除方法

黄曲霉毒素(aflatoxjn)分布的范围很广,凡是污染了能产生黄曲霉毒素的真菌的粮食、油料作物的种子、食品和饲料等,都有可能存在黄曲霉毒素。根据现有的资料,黄曲霉毒素是各种真菌毒素中毒性最大的一种。目前,已确定其化学结构的有黄曲霉毒素B_1、B_2、B_(2a)、G_1、G_2、G_(2a)、     

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.     

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.     

National Development and Reform Commission Issued Announcement for Selection of Major Preliminary Research Projects for the "13~(th) Five-Year Plan"

In Apri Commi major p Plan＂ （h 2014, the National Development and Reform ssion issued an announcement for selection of reliminary research projects for the ＂13th Five-Year ereafter referred to as ＂The Announcement＂）     

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 scientific     

Contamination of animal feed and food from animal origin with mineral oil hydrocarbons

Oils and fats used for the production of animal feed can become contaminated with mineral oil material originating from gas oils (C₁₈-C₃₅) or synthetic oils (poly alpha olefins, C₂₅ to beyond C₄₅). An important cause is assumed to be the discharge of waste oils, such as motor oil and hydraulic oils. Mineral oil material was analysed by on-line LC-GC-FID directly in the fat or in a raw extract from animal feed or foodstuffs. In Switzerland in summer/autumn 1999 concentrations in oils and fats for feed production were often found to be between 100 and 1000mg/kg. In the feeds, the average concentration was around 100mg/kg with values ranging up to a maximum of 1000mg/kg; few samples were free of contamination. In animal body fat, the average concentration determined in summer 1999 was 25mg/kg, with a maximum of 150mg/kg, although in samples from December 1999, contamination was substantially lower. In the fat phase of eggs, the average concentration was 30mg/kg, with a maximum of 80mg/kg. Paraffin oil is used for feed production, which may account for part of the contamination problem (e.g. eggs).