PPMA携手会员参加国际橡塑展

4月18～21日,CHINAPLAS国际橡塑展于上海新国际博览中心举办。展会产品涉及辅助设备、吹塑机、化工及原料、辅料、挤出机及挤出生产线、注塑机、计算器辅助设计及生产系统、预加工、回收利用机械及设备、修饰、装潢、印刷及印标机械及设备等加工与包装工艺。     

浅谈低压配电监控系统的研制

随着计算机网络技术及电子信息技术的不断发展,人们对电力的质量及环保提出了更高要求。将计算机网络技术及电子通信技术应用于电压配电系统监测及控制领域,并研制出低压配电监控系统,通过电压配电监控系统,实现对配电网数据的采集、监控、管理及负荷监控等功能,为管理者及时提供电气系统各种电气参数及信息,实现系统监控的远程化及网络化,从而保障供电品质及可靠性,节约电力成本及检修成本,为企业获得良好的经济效益及社会效益。     

三大展会汇集“YiwuTex 2014”

<正>第15届中国义乌国际针织及织袜机械展览会、第4届中国义乌国际缝制及自动化服装机械展览会及2014中国义乌国际染整及数码印花机械展览会三大展会一同汇集"YiwuTex 2014",并于2014年11月19~22日在浙江省义乌市国际博览中心揭开帷幕。据悉,此次展出面积达15000平方米,包括针织及织袜机械、横机及经编机械、裁剪、激光及CAD/CAM系统、缝纫机械及配件、数码印花机械、染色、整理及定型机械等国内外知名纺织机械企业,将在"针织及织袜机械     

无损检测技术在掺假肉及肉制品中的应用进展

掺假肉及肉制品是全球普遍关注的食品安全问题,食用掺假肉及肉制品可能引发消费者的健康隐患。无损检测技术在鉴别掺假肉及肉制品中有重要的应用,包括红外光谱技术、拉曼光谱技术、高光谱成像技术、多光谱成像技术、核磁共振技术、电子鼻及电子舌技术。无损检测技术具有传统检测方法没有的优势,其优点包括经济、无损、准确及短时间内检测大量的掺假肉及肉制品等。文章综述了光谱学和生物传感器两类无损检测技术在鉴定掺假肉及肉制品的原理及实际应用,对无损检测技术在掺假肉及肉制品中的发展进行总结与展望,以期为完善鉴别掺假肉及肉制品的无损检测技术提供一定的理论参考,保障肉及肉制品的安全性及真实性。     

“2014中国国际造纸科技展览会及会议”最新进展

由中国造纸协会、中国造纸学会和中国制浆造纸研究院共同主办的“2014中国国际造纸科技展览会及会议”将于2014年9月3—5日在上海世博展览馆举行。展览内容涵盖制浆造纸机械设备、零部件、辅助器材、自动化设备及仪器仪表;各类商品纸浆、纸及纸板;废纸及废纸利用技术、设备等;造纸化学品;环保及综合利用新技术及设备;特种纸原料及设备等。     

红薯及红薯叶综合利用及深加工技术

红薯是中国的主要粮食作物之一,对红薯及红薯叶综合利用及深加工技术研究进行综述,并展望未来红薯及红薯叶深加工技术及产品开发发展方向。     

“2014中国国际造纸科技展览会及会议”将于9月在上海举办

正由中国造纸协会、中国造纸学会和中国制浆造纸研究院共同主办的"2014中国国际造纸科技展览会及会议"将于2014年9月3~5日在上海世博展览馆举行。展览内容涵盖制浆造纸机械设备、零部件、辅助器材、自动化设备及仪器仪表;各类商品纸浆、纸及纸板;废纸及废纸利用技术、设备等;造纸化学品;环保及综合利用新技术及设备;特种纸原料及设备等。此前,2013年9月23~25日在北京举办的"2013中国国际造纸科技展览会及     

让莱卡成为一种时尚——访英威达服饰部全球内衣及泳衣类总监Michelle Rice

Michelle Rice 作为英威达服务业务全球内衣类及泳衣类总监,Michelle Rice主要负责英威达服装部的内衣及泳衣业务,管理一系列品牌及产品,其中包括LYCRA（莱卡）纤维品牌及LYCRA2．0服装技术。Rice女士带领她的团队,规划内衣及泳衣业务的全球战略发展,管理现有的及新的营销模式,开发服务于整个价值链的创新科技方案。     

我国大米加工技术现状及展望

对大米加工过程中各环节如稻谷干燥、稻谷清理、砻谷及砻下物分离、碾米及白米分级、大米精加工、包装及保藏及副产品利用等现有技术特点及参数进行了详细描述,就目前存在的主要问题进行了初步分析,并对未来发展进行了预测。     

2018年全球包装纸及纸板生产及消费概况

核心提示:本文对2018年全球包装纸及纸板和主要纸种的生产及消费情况以及贸易情况进行了简要分析和介绍。1全球包装纸及纸板的生产及消费情况1.1包装纸及纸板生产量和消费量2009—2018年全球包装纸及纸板生产及消费情况见图1。从图1可以看出,全球包装纸及纸板生产量及消费量呈逐年递增态势。2018年全球包装纸及纸板生产量2.5614亿t,较上年增长4.21%。消费量2.5610亿t,较上年增长3.84%,人均年消费量为34 kg(75.04亿人)。2009—2018年,包装纸及纸板生产量年均增长率3.36%,消费量年均增长率3.45%。     

Bioaccessibility of Se, Cu, Zn, Mn and Fe, and heme iron content in unaged and aged meat of Hereford and Braford steers fed pasture

The content and the bioaccessibility of Se, Cu, Zn, Mn, and Fe were determined in unaged and aged meat (14days) from the Psoas major (PM), Gluteus medius (GM) and Longissimus dorsi (LD) muscles of Hereford (H) and Braford breed (B) steers fed pasture. Furthermore, the content of heme-Fe was determined in the same muscles. The H had a lower content of Cu and a higher content of Fe. Also, H had more heme-Fe than B. The bioaccessibility in unaged meat for Se, Cu, Zn, Mn and Fe ranged between 75 and 91%, 30 and 45%, 40 and 68%, 55 and 95%, and 60 and 70%, respectively. After aging, the bioaccessibility for the same minerals ranged between 58 and 80%, 30 and 48%, 40 and 58%, 75 and 95%, and 59 and 70%, respectively. Aging affected negatively the Se content and its bioaccessibility, in the two breeds. Also, the heme-Fe content was negatively affected by aging in all muscles and breeds.     

赛络纺纱钢领、钢丝圈的选配实践

为了提高赛络纺纱成纱质量,减少细纱断头,从钢领、钢丝圈的种类,卷绕过程中对纺纱的影响及其运动配合等诸多因素出发,论述了钢领、钢丝圈的选配原则,重点阐述了赛络纺纱钢丝圈运动形态的变化及钢领、钢丝圈的选配要求,通过纯棉、非棉纤维纺纱的选配实践,指出赛络纺纱线毛羽少,结构紧密,应根据纺纱纤维性能和纺纱特点,以纱线通道通畅降毛羽、运行平稳少断头、散热良好延长使用寿命为原则对钢领、钢丝圈进行选配。     

Capacity building in food composition for Africa

Capacity building in food and nutrition involves more than formal training and individual development. Such a process is long term and continues, requiring lasting mentorship, coaching and leadership development, including individual commitment to continued self-development. It expands to include the development of knowledge and skills of an individual within his/her organizational or institutional arrangements, and requires buy-in and support from his/her institution or organization, as well as other funding bodies involved in agriculture and health. It needs to be supported by government and be part of the regional and international agenda for agriculture and health.     

Functionality of cow beef in coarse and fine ground model systems

Patties and sausage batters were made from trimmed brisket, chuck, striploin, hindshank, silverside, thick flank and rib trim from grass-fed Friesian cows. Functionality of each meat cut was determined from cook yield and true stress and strain of cooked sausage batters and cook yield, dimensional changes and peak force of cooked patties. Colour of raw and cooked slices from the meat cuts and cooked batters was evaluated using a colorimeter and a consumer panel. Composition of raw meat from all cuts was similar; chuck and rib trim had higher pH values and were more red than meat from other cuts. Cooked batters from striploin, chuck and hindshank had higher stress and strain values than gels from other cuts. Patties made from thick flank and striploin were the softest and had the highest cook yield. Batters and patties made from meat with higher salt soluble protein content retained more water and fat on cooking, were more cohesive and had higher bind strengths. Manufacturers can use functionality characteristics to select meat for specific products.     

Tetrahydro-beta-carboline-3-carboxylic acid compounds in fish and meat: possible precursors of co-mutagenic beta-carbolines norharman and harman in cooked foods

The presence of tetrahydro-beta-carbolines and beta-carbolines was studied in raw, cooked and smoked fish and meat. 1,2,3,4-Tetrahydro-beta-carboline-3-carboxylic acid (THCA) usually was the major beta-carboline found, whereas 1-methyl-1,2,3,4-tetrahydro-beta-carboline-3-carboxylic acid (MTCA) appeared in smoked and 'well done' cooked samples. THCA was detected in raw fish (nd-2.52 micrograms/g), cooked fish (nd-6.43 micrograms/g), cooked meats (nd-0.036 microgram/g), smoked fish (0.19-0.67 microgram/g) and smoked meats (0.02-1.1 micrograms/g). Smoked and cooked samples contained higher amounts of THCA and MTCA than raw products. Deep cooking of fish and meat increased both THCA and MTCA, and this was accompanied by the formation of more beta-carbolines, norharman and harman. The tetrahydro-beta-carbolines THCA and MTCA were chemical precursors of the co-mutagens norharman and harman during cooking. These and previous results confirm that foods are an important source of beta-carbolines in humans.     

Role of microbiota function during early life on child's neurodevelopment

BackgroundThere are critical periods during pregnancy and early life when child's neurodevelopment can be altered, where different factors including hormones, stress, genetics, and diet have an important role. Novel studies are indicating that also gut microbiota and maternal obesity can influence child's neurodevelopment.Scope and approachThis review summarises the current concepts related to microbiota-gut-brain axis, including microbiota modulation of the eating behaviour, child's cognitive function and brain structure, microbiota analysis techniques and neurodevelopment assessment in children. Further, we propose and present knowledge about potential mechanisms of action and ways to intervene for disease prevention and treatments, opening up an exciting area with important medical and industrial applications.Key findings and conclusionsThis novel and fast developing research area is indicating that gut microbiota in association with body weight might have an important impact on foetal and child neurodevelopment. However, the exact mechanisms are not known and further research in the field is warranted. Within the MyNewGut Project we aim to analyse the impact of microbiota in association with body weight on cognitive and behaviour development in children. We will study the phylogeny and function of the gut microbial communities in overweight, obese and gestational diabetes pregnancies and in their progeny, in association with infants and children's cognitive and behavioural outcomes. As well, the impact of gut microbiome on brain structure and function during childhood will be evaluated. Results from this study will shed light on the impact of maternal and offspring gut microbiome and body weight on child's neurodevelopment, brain structure and function, and will suggest potential mechanisms for intervention.     

无缝内衣智能工厂设计和布局

中国纺织服装企业传统的纺织加工模式已经不能适应目前成本的快速上涨,智能化、信息化、网络化的纺织加工必将替代传统纺织加工,这是我国纺织印染行业未来发展的必然趋势。文中主要介绍无缝内衣织造和染色智能化、信息化、网络化工厂的设计布局及管理,主要设计布局了织造车间智能化配送、中控系统,染色车间主要设计了自动进出产品的智能染色和烘干设备,设计布局了产品自动配送和传送、染料和助剂的自动称量和输送系统,为无缝内衣织造和染色工厂实现智能化信息化提供参考依据。     

川渝地区市售包装榨菜、泡菜亚硝酸盐含量的调查及安全性评价

为摸清川渝地区市售包装榨菜、泡菜的亚硝酸盐含量,科学认识市售包装榨菜、泡菜的安全性,该研究通过随机取样,共采集市售包装榨菜22份、市售包装泡菜23份及其他常见食品（肉制品、速冻鱼类、水果罐头、新鲜果蔬及隔夜饭菜）30份,通过亚硝酸盐含量测定及对比分析评价了川渝地区市售包装泡菜、榨菜的亚硝酸盐污染情况及食用安全性。结果表明,川渝地区市售包装泡菜、榨菜样品的亚硝酸盐含量在0.16～4.42 mg/kg,与其他常见食品相比其亚硝酸盐含量处于中低水平。考虑摄入量后,经由泡菜、榨菜进入人体的亚硝酸盐剂量仅为0.2～10 μg/（kg·d）,符合相关国际标准。     

Characteristics and gel properties of muscles from sardine (Sardinella gibbosa) and mackerel (Rastrelliger kanagurta) caught in Thailand

Dark and ordinary muscle from sardine (Sardinella gibbosa) and mackerel (Rastrelliger kanagurta) were characterized. Lipid and myoglobin contents were higher in dark muscle than in ordinary muscle of both species, and higher contents of both constituents were found in sardine muscle than mackerel muscle. The extractable myoglobin contents in sardine dark and ordinary muscle were 14.27 and 2.18 mg/g, while mackerel dark and ordinary muscle contained 4.88 and 1.37 mg myoglobin/g sample, respectively. Alkali-soluble protein and stroma contents were greater in dark muscle than ordinary muscle. Mackerel muscle comprised a higher content of non-protein nitrogenous compounds than sardine muscle. The effect of washing conditions on the myoglobin extractability was investigated. A large amount of myoglobin was removed in the first washing cycle and only a small amount was removed in the second washing cycle. The highest removal of myoglobin from sardine (32.10–46.55%) and from mackerel muscle (103.20–313.66%) was achieved when the mince was washed with 0.2% NaCl and 0.5% NaCl, respectively. Washing media showed the marked effect on the color, expressible drip and textural properties of sardine and mackerel mince gels. The breaking force of directly heated and kamaboko gels from both sardine and mackerel mince washed with NaCl solution was higher than that of unwashed mince and water washed mince. However, no difference in deformation was observed. Washing also resulted in increased whiteness and lowered expressible moisture. In general, sardine surimi showed the superior gel-forming ability and whiteness to mackerel surimi.     

Chloronaphthalenes as food-chain contaminants: a review

Chloronaphthalenes are dioxin-like environmental and food contaminants that for many years have undergone diffusion from dispersed emission sources of various types on a global scale. When released into ambient air like many other semivolatile organohalogen compounds, chloronaphthalenes undergo various processes and pathways including sequestering by plant vegetation and biota. Recently available data indicate that sequestering rates of chloronaphthalenes by plant biomass and including edible plants as well as concentrations in food sources of plant origin can be greater than was earlier predicted. Additionally, it become known very recently that in some highly industrialized countries such as Japan, Canada and the UK, the technical chloronaphthalene mixtures are still a subject of industrial and commercial interest, even if such activities are illegal. Recent achievements in HRGC-HRMS have enabled elucidation and quantification of the chloronaphthalene congener composition in environmental matrices, food sources and technical mixtures, their persistency, environmental fate, accumulation in biota and potential for food chain biomagnification. However, at the same time this raised questions regarding human exposure to these compounds. By the late 1990s, these developments added to the relatively rapidly growing knowledge on these compounds and especially individual congener properties such as thermodynamic and physicochemical features and toxicity. Multistage fractionation has recently enabled routine congener-specific quantification of tetra- to octachloronaphthalene in various matrices. This paper reviews the literature on chloronaphthalenes as food chain contaminants and covers their origin, physicochemical properties, toxicity, environmental concentrations and persistency, and homologue group and congener composition in various matrices. The review also covers distribution in environmental compartments and subsequent fate and migration to food sources, as well as the magnitude of dietary intake and human body concentrations. Data on chloronaphthalene residues in food, however, are still scare, an exception being seafood sources and recently available data from Spain on their concentrations in staple foods and dietary intake.