为食品添加剂正名

<正> 由中国食品添加剂生产应用工业协会和中国国际贸易促进委员会轻工行业分会举办的“第六届中国国际食品添加剂展览会,暨第十二届全国食品添加剂生产应用技术展示会”,与博闻有限公司主办的“亚洲食品配料(中国)展览会”合并,已于2002年4月1～3日在上海光大会展中心隆重举行。     

盛况空前的两大食品添加剂配料展览会将于2000年4月5～7日在上海隆重举行

<正> 在跨入21世纪的第一个春天,中国食品添加剂生产应用工业协会和中国国际贸易促进委员会轻工行业分会将再度与亚洲博闻有限公司携手主办“第四届中国国际食品添加剂展览会暨第十届全国食品添加剂生产应用技术展示会和亚洲食品配料展览会”。 这两大展览会将于2000年4月5～7日在上海光大会展中心隆重举行。展览会的宗旨在于交流食品添加剂和食品配料的生产、应用、开发等方面的信息;展示国内外食品添加剂和配料的新产品、     

展会回顾

由中国食品添加剂生产应用工业协会和中国贸促会轻工行业分会主办的第六届中国国际食品添加剂展览会暨第十二届全国食品添加剂生产应用技术展示会再次与博闻公司主办的亚洲食品配料(中国)展览会合并举行,于2002年4月3日在上海光大会展中心圆满地落下帷幕。展览会以“没有食品添加剂就没有现代食品工业”和“发展食品添加剂工业,推动食品工业的技术创新”为主题,开得既隆重又热烈,体现了国际性、专业性、权威性的特点。     

六大特点 打造品牌——第八届中国国际食品添加剂和配料展览会开幕在即

<正> 由中国食品添加剂生产应用工业协会和中国贸促会轻工行业分会主办的“第八届中国国际食品添加剂和配料展览会暨第十四届全国食品添加剂生产应用技术展示会”将于2004年3月3~5日在上海光大会展中心隆重举行。     

食品需要添加剂行业需要《食品添加剂市场》

《食品添加剂市场》会刊是由北京商无城网络科技有限公司办的中国唯一一本食品添加剂市场专业刊物．主要为读者提供品添加剂市场资讯、实用技术等综合服务,已在食品添加剂及关应用行业产生了广泛的影响。本刊被中国著名食品专家壮子端生誉为“市场睛雨表,企业好参谋”;中国食品添加剂生产应用业协会吕坚东理事长特为本刊题词：“食品需要添加剂,行业需《食品添加剂市场》“。     

有关发展食品添加剂生产若干问题的探讨

当今，食品添加剂在我国已成为一个新兴的行业。食品添加剂已渗透到所有食品加工领域，包括粮油加工、畜禽产品加工、果蔬保鲜及加工、酿造、饮料、烟、酒、茶等的加工、糖果、糕点、冷食品加工以及营养保健食品的加工，乃至于在烹饪行业、调味品加工、家庭一日三餐所需中，食品添加剂也是必不可少。据估计，全国从事食品添加剂生产的企业不下千家，而应用单位则不计其数。“中国食品添加剂生产应用工业协会”的前身，系“全国食品添加剂协作组”，该协作组1989年成立之初，参加单位还不到100个。1993年3月，“中国食品添加剂生产应用工业协…     

首届中国国际食品添加剂展览会暨第7届全国食品添加剂生产应用技术展示会

<正> 为了沟通国内外同行在食品添加剂的生产技术、新产品开发、新原料应用等方面的信息,展示近年来国际食品添加剂和配料生产的新技术、新设备和新成果,促进我国企业直接参与国际市场竞争,经中国国际贸易促进委员会批准,中国食品添加剂生产应用工业协会和中国国际贸易促进委员会轻工业分会,将于1997年3月10～12日在北京中国国际展览中心举办首届中国国际食品添加剂展览会暨第七届全国食品添加剂生产应用技术展示会(Food Ingredients Ghina'97)。该展览会得到了中国轻工总会的支持,以及国内外食品界有一定影响和代表性的行业协会、企业的赞助。     

食品添加剂和配料展 3月在上海开幕

<正> 由中国食品添加剂生产应用工业协会和中国贸促会轻工行业分会主办的第八届中国国际食品添加剂和配料展览会暨第十四届全国食品添加剂生产应用技术展示会(FIC 2004)将于2004年3月3-5日在上海光大会展中心隆重举行。本届     

第三届中国国际食品添加剂展览会暨第九届全国食品添加剂生产应用技术展示会

<正> 为了交流食品添加剂与配料的生产、应用、开发等方面的信息,展示国内外食品添加剂与配料的新成果,进一步提高我国食品添加剂与配制的生产和应用水平,更好地推动食品和食品配料企业的技术交流与经贸合作,经中国国际贸易促进委员会批准,由中国食品添加剂生产应用工业协会和中国国际贸易促进委员会轻工行业分会合作举办,并得到国家轻工业局的支持及国内外食品界具代表性的行业协会、中心、研究所的赞助,“第三届中国国际食品添加剂展览会暨第九届     

配料展会再放异彩——记2002年亚洲食品配料(中国)展览会

<正> 对于我国而言,2002年是一个好年度。去年年底的入世大事,似乎把人民的情绪都给挑旺了,整个国家的营商环境火爆非常。刚于4月1-3日在上海光大会展中心举办的“2002年亚洲食品配料(中国)展览会”,便是一个极好的例子。 展会由博闻有限公司联合中国食品添加剂生产应用工业协会、中国国际贸易促进委员会轻工行业分会主办,同期并举行“第六届中国国际食品添加剂展览会”。     

金融风暴下的中国造纸工业

中国造纸工业在获得多年高速发展之后,要以金融风暴引发各国实体经济的衰退为契机,反思行业的发展思路,寻找更科学、合理,经济效益与社会效益俱佳,可持续发展的道路。     

基于稳健设计理论的平面机构优化设计

运用稳健设计理论,以连杆机构的几何参数为设计变量,以满足曲柄摇杆机构及传动角条件为约束。以再现轨迹精度最佳为目标函数。同时考虑连杆件制造精度对轨迹精度的影响。采用蒙特卡罗法采样和多目标遗传算法对机构进行稳健优化设计。计算结果表明：该方法更符合实际情况,且当设计变量发生变异时,能有效保证机构的运动轨迹精度。     

Passive in situ remediation of metal-polluted water with caustic magnesia: evidence from column experiments

Passive remediation consists of a permeable system that enables the water to pass through while retaining metals by means of biogeochemical reactions. Conventional passive treatments are based on calcite dissolution. This increases the pH to values between 6 and 7, which are insufficiently high to precipitate divalent metals. Alternative treatments are based on sulfate reduction with organic matter in order to precipitate metal sulfides. However, redox reactions are usually too slow to treat large groundwater flows as currently found in gravel aquifers (>50 m/a). Caustic magnesia obtained from calcination of magnesium carbonate was tested as an alternative material to devising passive remediation systems. Caustic magnesia reacts with water to form magnesium hydroxide, which dissolves, increasing the pH to values higher than 8.5. Then zinc and lead are mainly precipitated as hydroxides, copper is precipitated as hydroxysulfate, and manganese(II) is oxidized and precipitated as manganese(III) oxides. Thus, metal concentrations as high as 75 mg/L in the inflowing water are depleted to values below 0.04 mg/L. Magnesia dissolution is sufficiently fast to treat flows as high as 100 m/a. The new precipitates may lead to a permeability drop in the porous treating system. Mixtures of caustic magnesia and an inert material such as silica sand (approximately 50% of each) have been shown to be as reactive as pure magnesia and permeable for a longer time (more than 10 months and 1000 pore vol).     

丁腈胶辊与丁腈胶圈应用技术同改善成纱质量间的重要关系

阐述了胶辊结构、硬度与成纱条干、强力的关系,胶辊硬度与摩擦因数、钳口线宽度的关系;胶辊直径、套差与成纱质量的关系;分析了低硬度胶辊改善成纱条干的机理,指出胶辊制作中必须注意的问题及纺纱工艺配置.胶圈应用中应重视表面粗糙度、摩擦因数、内周长尺寸及抗拉强度等性能指标.分析了胶圈配置的原则,并对表面处理胶辊的作用机理作了分析,对化工涂料配比原则、操作要求及注意事项作了介绍.     

Nitrogenous constituents in the urine of cattle,sheep and goats

Ten samples of urine from dairy cows, five from sheep and four from goats were analysed to assess the distribution of urinary nitrogen (N) among various chemical constituents in order to gain a better understanding of the reactions undergone by urinary N in soil. Total N in the cow urine ranged from 6.8 to 21.6 g N litre^?1, of which an average of 69% was present as urea, 7.3% as allantoin, 5.8% as hippuric acid, 3.7% as creatinine, 2.5% as creatine, 1.3% as uric acid, 0.5% as xanthine plus hypoxanthine, 1.3% as free amino acid N and 2.8% as ammonia. In the sheep urine, total N ranged from 3.0 to 13.7 g litre^?1 of which an average of 83 % was present as urea; creatine accounted for 5.3% of the N; hippuric acid and allantoin both accounted for 4.3%, while each of the other constituents amounted to less than 1% of the total N. The goat urine was similar to the sheep urine but with a lower ratio of creatine to creatinine and a somewhat higher proportion (2.0 %) of the total N as amino acid.     

Use of caustic magnesia to remove cadmium, nickel, and cobalt from water in passive treatment systems: column experiments

In the present study caustic magnesia obtained from calcination of magnesium carbonate was tested in column experiments as an alternative material for passive remediation systems to remove divalent metals. Caustic magnesia reacts with water to form magnesium hydroxide, which dissolves increasing the pH to values higher than 8.5. At these pH values, cadmium is precipitated as otavite and to a minor amount as a hydroxide. Cobalt and nickel are precipitated as hydroxides which form isostructural solids with brucite. Thus, metal concentrations as high as 75 mg/L in the inflowing water are depleted to values below 10 microg/L. Magnesia dissolution is sufficiently fast to treat flows as high as 0.5 m3/m2 x day. For reactive grain size of 2-4 mm, the column efficiency ends due to coating of the grains by precipitates, especially when iron and aluminum are present in the solution.     

In vitro and in vivo metabolism of the soy isoflavone glycitein

Glycitein (GLY) is a major isoflavone of soy germ which is used as a functional ingredient to enrich foods with isoflavones as well as a component of soy supplements. Since data on the metabolism of GLY are incomplete, the in vitro phase I metabolism of GLY using rat liver microsomes, human liver microsomes (HLM), as well as human fecal flora was investigated. Furthermore, the in vivo metabolism has been studied after administration of GLY to Sprague-Dawley rats. The identification of the formed metabolites has been elucidated using HPLC/DAD, HPLC/API-ES MS, GC/MS, as well as reference compounds. With respect to the phase I metabolism, GLY has been converted to ten metabolites by liver microsomes of Aroclor-induced Wistar rats with 8-hydroxy(OH)-GLY as the main metabolite. HLM converted GLY to six metabolites with 8-OH-GLY and 6-OH-daidzein (DAI) being the major products. No sex-related differences were observed in each system. Intestinal metabolism of GLY led to four metabolites with 6-OH-DAI as the main product. The in vivo metabolism in rat urine after single-dose administration of GLY resulted in the identification of three oxidative and two bacterial metabolites as well as the demethylation product 6-OH-DAI as the main metabolite.     

Bacterial cellulose IV. Application to processed foods

A new form of cellulose, bacterial cellulose (BC), features smooth texture and high water-holding capacity. These properties function positively in food systems: BC functions as a heat-stable suspending agent as well as a filler to reinforce the body of fragile food hydrogels, improved the quality of pasty foods by reducing their stickiness, could be applied to meat products as a fat substitute and to jam as a noncaloric bulking agent. These results show that BC will be widely applicable to processed foods to improve their quality.     

Inhibition of N-Nitrosamine Formation in a Cured Ground Pork Belly Model System

A model system consisting of a uniformly distributed sample of ground pork in conjunction with a nitrite containing curing solution was utilized to evaluate the formation of N-nitrosamines. Utilizing this system a wide variety of compounds were discovered to dramatically reduce the level of N-nitrosopyrrolidine (NPyr) formed during frying. Carbohydrates including the reducing sugars dextrose, ribose, lactose, and maltose, as well as liquid smoke preparations, were found to reduce NPyr levels by as much as 60%. In addition, when low levels of combinations of inhibitors glucose, liquid smoke, and α-tocopherol were incorporated, reductions in nitrosamine levels as great as 80% were observed in model systems as well as in pilot plant manufactured bacon.     

Eignung von Einjahrespflanzen als Zuschlagstoffe für Gipsspanplatten

The semi-dry process for the manufacture of gypsum-bonded particleboards was suggested by Kossatz. This process offers besides the use of wood particles as additives the possibility of employing annual plants. Using a Chinese and a German Beta-hemihydrate gypsum plaster the suitability of bagasse, bamboo, cotton stalks, rice straw and wheat was investigated. Besides phase-analytical investigations regarding the characterization of the binders also the efficacy of various retardants as well as the influence of the different plant substances on the hydration were determined. Test boards of varying formulas and density were manufactured from annual plants in order to evaluate the suitability of same. The considerably retarded hydration of the gypsum plaster induced by different extracellular substances does not necessarily lead to boards with low strength properties as well as a moderate impairment compulsorily leads to boards with high strength properties. As far as the board strength is concerned, equal importance has to be attached to the surface condition of the particles, their spraying behaviour and pore structure, as well as to the fineness ratio of the particles and the portion of plant parts which cannot be broken up to particle-shape structures.