用胡萝卜加工可食性蔬菜彩色纸

食品大量应用塑料来包装,由于塑料极难自然降解,塑料垃圾很难处理,因此一些发达国家已部分限制塑料包装的使用。开发应用可食性包装纸是减少垃圾、保护环境的有效途径之一。以胡萝卜为基料,添加适当的增稠剂、增塑剂、抗水剂,利用胡萝卜的天然色泽,可制成价廉物美的可食性彩色蔬菜纸。这种产品可用作盒装食品的个体(内)包装或直接当作方便食品食用,既能减少环境污染,又能加强食品     

山楂胡萝卜复合果茶及其稳定性的研究

通过3因素3水平正交试验，确定山楂胡萝卜复合果茶的基本配方为山楂浆与胡萝卜浆的最佳配比为2：1、糖的添加量为8％。对不同增稠剂的单因素试验和复合试验结果表明，复合增稠剂对产品有良好的稳定作用，增稠剂最佳用量为0．1％黄原胶＋0．05％刺槐豆胶。     

海藻酸钠对可食性蔬菜纸质构的影响

该文研究了海藻酸钠、CMC—Na、琼脂3种增稠剂对胡萝卜纸的影响,经过复合三种增稠剂对胡萝卜的研制进行了探讨。通过正交试验得最佳配方为：胡萝卜100％,海藻酸钠0．8％,CMC—Na为0．5％,琼脂0．4％,甘油2．5％。     

用胡萝卜加工可食性蔬菜彩色纸

食品大量应用塑料来包装,由于塑料极难自然降解,塑料垃圾很难处理,因此一些发达国家已部分限制塑料包装的使用。开发应用可食性包装纸是减少垃圾、保护环境的有效途径之一。本文探讨的是以胡萝卜为基料,添加适当的增稠剂、增塑剂、抗水剂,利用胡萝卜天然色泽,制成价廉物荚物可食性彩色蔬菜纸的工艺。这种产品可用作盒装食品的个体(内)包装或直接当作方便食品食用,既能减少环境污染,又能加强食品美感,增加消费者的食趣和食欲,生产工艺简单实用,市场潜力很大。     

用胡萝卜加工可食性蔬菜彩色纸

食品大量用塑料来装，由于塑料极难自然降解，塑料垃圾很难处理，因此一些发达国家已部分限制塑料包装的使用。开发应用可食性包装纸是减少垃圾、保护环境的有效途径之一。本文探讨的是以胡萝卜为基料，添加适当的增稠剂、增塑剂、抗小剂，利用胡萝卜天然色泽，制成价廉物美的可食性彩色蔬菜纸的工艺。这种产品可用作盒装食品的个体（内）包装或直接当作方便食品食用，既能减少环境污染，又能加强食品食用，增加消费者的食趣和食欲，工艺简单实用，市场潜力很大。１ 材料和方法１．１　原材料　 胡萝卜、海藻酸钠、甘油、氯化钙、抗水剂。１…     

可食用性胡萝卜纸的研制

以胡萝卜为主料 ,添加胶粘剂、增塑剂制备胡萝卜纸。结果表明 ,复合胶粘剂的成型效果优于单一胶粘剂 ,复合胶粘剂 (CMC Na,海藻酸钠 ,琼脂 )的最佳质量比为 1∶2∶1 ,最适用量为0 4% (按菜泥质量计 )。按此配比和用量添加于胡萝卜浆中 ,得到较理想的成型效果     

枣纸生产工艺的研究

主要以大枣为基料,添加适当的增稠剂、增塑剂,利用大枣的天然色泽,生产可食性枣纸。利用海藻酸钠、果胶、CMC 3种增稠剂的复合作用,甘油的增塑作用对枣纸的研制进行了探讨。通过正交试验得出的最佳配方为:海藻酸钠0.4%,CMC为0.3%,果胶0.2%,甘油4.0%。最佳烘烤温度60℃,含水率16.05%。     

蔬菜纸加工技术参数的研究

本研究以胡萝卜为原料，经打浆并加入不同种类、不同数量的增稠剂，在不同温度下干燥成型，得出最佳增稠剂为海藻酸钠，其最佳用量为0．6％；最佳干燥条件：50℃(3h)—65℃(3．5h)蔬菜纸的最终含水率15．53％。     

胡萝卜纸的研制

本文研究了制作胡萝卜纸的工艺条件，包括护色，成型、干燥等条件的研究，结果表明将胡萝卜放在90℃的0．5％的明矾溶液中漂烫4min护色效果最好；将CMC、黄原胶、海藻酸钠三者按照4：5：8比例混合成为复合胶粘剂，总浓度为0．6％时成型效果最好；胡萝卜浆料比为30％；并采用热风干燥方式，风速为1．0m／s，60℃下干燥4～5h，制成的胡萝卜纸不仅保持了胡萝卜的原有风味，色泽，而且纸质致密均匀，强度适中，口感良好。     

用胡罗卜加工可食性蔬菜彩色纸

食品大量应用塑料来包装，由于塑料极难自然降解，塑料垃圾很难处理，因此一些发达国家已部分限制塑料包装的使用。开发应用可食性包装纸是减少垃圾、保护环境的有效途径之一。本文探讨的是以胡萝卜为基料，添加适当的增稠性、增塑剂、抗水剂，利用胡萝卜天然色泽，制成价廉物美的可食性彩色蔬菜纸的工艺。这种产品可用作盒装食品的个体（内）包装或直接当作方便食品食用，既能减少环境污染，又能加强食品美感，增加消费者的食趣和食欲，生产工艺简单实用，市场潜力很大。１材料和方法原材料胡萝卜、海藻酸钠、甘油、氯化钙、抗水剂。主要实…     

Reliable identification of grapevine rootstock varieties using RAPD PCR on woody samples

Since grapevine ( Vitis spp .) rootstock material is being traded increasingly as disbudded woody material a lack of distinctive morphological features on such material necessitates an alternative and reliable means of identification. Methods described here were developed for rapid and efficient extraction of DNA from woody samples rich in phenolic compounds and polysaccharides, and for subsequent identification of varieties by RAPD PCR. Using these methods, and with the application of only one selected RAPD primer, we were able to differentiate sixteen rootstock varieties, including the seven varieties most commonly used in Germany. Problems commonly encountered with reproducibility of RAPD patterns were avoided by choosing primers with a dinucleotide sequence and a high G/C content that allowed a rather high annealing temperature of 45°C. Methods described here should also be useful for other horticultural crops, especially those with woody tissues rich in phenolic compounds and polysaccharides.     

Chlorohydrins of bisphenol A diglycidyl ether (BADGE) and of bisphenol F diglycidyl ether (BFDGE) in canned foods and ready-to-drink coffees from the Japanese market

BADGE.2HCl and BFDGE.2HCl were determined in 28 samples of ready-to-drink canned coffee and 18 samples of canned vegetables (10 corn, 5 tomatoes and 3 others), all from the Japanese market. HPLC was used as the principal analytical method and GCMS for confirmation of relevant LC fractions. BADGE.2HCl was found to be present in one canned coffee and five samples of corn, BFDGE.2HCl in four samples of canned tomatoes and in one canned corn. No sample was found which exceeded the 1mg/kg limit of the EU for the BADGE chlorohydrins. However the highest concentration was found for the sum of BFDGE.2HCl and BFDGE.HCl.H₂O at a level of 1.5mg/kg. A Beilstein test confirmed that all cans containing foods contaminated with BADGE.2HCl or BFDGE.2HCl had at lest one part coated with a PVC organosol.     

European priorities for research to support legislation in the area of food contact materials and articles

A strong science base is required to underpin the planning and decision-making process involved in determining future European community legislation on materials and articles in contact with food. Significant progress has been made in the past 5 years in European funded work in this area, with many developments contributing to a much better understanding of the migration process, and better and simpler approaches to food control. In this paper this progress is reviewed against previously identified work-areas (identified in 1994) and conclusions are reached about future requirements for R&D to support legislation on food contact materials and articles over the next 5 or so years.     

Aroma characterization of various apricot varieties using headspace–solid phase microextraction combined with gas chromatography–mass spectrometry and gas chromatography–olfactometry

The characterization of the aromatic profile of several apricot cultivars with molecular tracers in order to obtain objective data concerning the aromatic quality of this fruit was undertaken using headspace–solid phase microextraction (HS–SPME). Six apricot cultivars were selected according to their organoleptic characteristics: Iranien, Orangered, Goldrich, Hargrand, Rouge du Roussillon and A4025. The aromatic intensity of these varieties measured by HS–SPME–Olfactometry were defined and classified according to the presence and the intensity of grassy, fruity and apricot like notes. In the six varieties, 23 common volatile compounds were identified by HS–SPME–GC–MS. Finally, 10 compounds, ethyl acetate, hexyl acetate, limonene, β-cyclocitral, γ-decalactone, 6-methyl-5-hepten-2-one, linalool, β-ionone, menthone and (E)-hexen-2-al were recognized by HS–SPME–GC–O as responsible of the aromatic notes involved in apricot aroma and considered as molecular tracers of apricot aromatic quality which could be utilized to discriminate apricot varieties.     

Tests of potential functional barriers for laminated multilayer food packages. Part I: Low molecular weight permeants

The advent of the functional barrier concept in food packaging has brought with it a requirement for fast tests of permeation through potential barrier materials. In such tests it would be convenient for both foodstuffs and materials below the functional barrier (sub-barrier materials) to be represented by standard simulants. By means of inverse gas chromatography, liquid paraffin spiked with appropriate permeants was considered as a potential simulant of sub-barrier materials based on polypropylene (PP) or similar polyolefins. Experiments were performed to characterize the kinetics of the permeation of low molecular weight model permeants (octene, toluene and isopropanol) from liquid paraffin, through a surrogate potential functional barrier (25 μm-thick oriented PP) into the food simulants olive oil and 3% (w/v) acetic acid. These permeation results were interpreted in terms of three permeation kinetic models regarding the solubility of a particular model permeant in the post-barrier medium (i.e. the food simulant). The results obtained justify the development and evaluation of liquid sub-barrier simulants that would allow flexible yet rigorous testing of new laminated multilayer packaging materials.     

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.     

Influence des ions sur le pouvoir hydratant de l'ure e: e tude sur peau de porc ex vivo

This study deals with the influence of ions (NaCl and MgSO4) in a W/O emulsion containing 10% urea. Moisturization kinetics are assessed by corneometry on pig skin ex vivo. The formula's influence on urea penetration is measured by infrared spectrometry with an ATR device and the stripping method. Corneometry and spectroscopy were chosen to record simultaneously the hydratation levels and urea localization into superficial cell layers. Urea crystallization after evaporation of emulsions and aqueous solutions is described. Results show that urea does not hydrate nor penetrate when applied to the skin through an aqueous gel. In a W/O emulsion, sodium chloride increases the ability of urea to moisturize without improving penetration. In vitro urea crystallization is disturbed by sodium chloride or magnesium sulphate for solutions and emulsions. This stabilization by ions is correlated with good moisturization values. The stabilization of urea in the solute state provided by ions increases its water epidermal binding capacity without enhancing penetration.     

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.     

Analysis on Economic Indicators from 62 Enterprises in Printing Machinery Industry in Q1 2014

Operation of printing machine industry was still unsatisfactory in the first quarter of 2014.Analysis on operation of printing machine industry.a.Market demand was not strong;sales of product undulated and declined.According to the statistics,the total industrial output value fell by 19.28% in the first quarter of 2014 than the average quarter value in 2013; industrial added value decreased by 4.16%; sales revenue dropped by 22.83%. h. Business operation of enterprises was in poor condition. c. R＆D of new products is an important transformation guarantee for enterprises. d. To take self explore new ways upgrading advantages,and explore new ways.