威伦天然食用色素在烧烤肉制品和蛋糕中的应用

随着人们健康意识的提高及食品卫生管理的加强,合成色素在食品中的应用越来越受消费者的抵制,用天然食用色素替代合成色素是食品发展的必然趋势。为了促进天然食用色素的发展,本文对威伦天然食用色素在在烧烤肉制品和蛋糕中的应用进行了试验,发现在烧鸡制作中采用威伦天然草莓食用着色,效果显著,解决了长期以来烘烤肉制品不得采用合成色素着色; 用威伦天然芒果食用色素制作的蛋糕色泽鲜美、气孔细致均匀、表面平滑柔顺、口感松化细腻香甜可口,弥补了传统配方产品颜色浅而暗、外观粗糙、口感不佳有苦涩味等缺点,同时使蛋糕生产成本下降了21.74%,提高企业效益。     

欧美天然色素市场以超高速迅猛发展

由于天然色素具有天然和健康属性 ,以及在明亮度和安全性等方面已不低于人工合成色素的水平 ,因此 ,世界天然色素市场正在以 2倍于人工合成色素的速度快速增长。许多消费者已经认识到天然食品与高品质关联 ,食品上采用自然、良好的色调令人产生高品质感 ;色调调配柔和的制品与人工调配而形成特别“娇艳色泽的制品” ,使人们产生完全相反的印象。而且 ,消费者经常看到合成类色素在安全性和健康方面受到否定的研究报告 ,逐渐产生了对合成类色素的怀疑的心态。除日本外 ,海外天然色素整体市场已经出现需求稳定的倾向 ,法国、英国、爱尔兰、瑞士…     

威伦天然食用色素在烧烤肉制品和蛋糕中的应用

随着人们健康意识的提高及食品卫生管理的加强，合成色素在食品中的应用越来越受消费者的抵制，用天然食用色素替代合成色素是食品发展的必然趋势。为了促进天然食用色素的发展，本文对威伦天然食用色素在在烧烤肉制品和蛋糕中的应用进行了试验，发现在烧鸡制作中采用威伦天然草莓食用着色，效果显著，解决了长期以来烘烤肉制品不得采用合成色素着色；用威伦天然芒果食用色素制作的蛋糕色泽鲜美、气孔细致均匀、表面平滑柔顺、口感松化细腻香甜可口，弥补了传统配方产品颜色浅而暗、外观粗糙、口感不佳有苦涩味等缺点，同时使蛋糕生产成本下降了21．74％，提高企业效益．     

常用的天然色素与人工合成色素使用中应注意的问题

色泽是食品最重要的感观性状之一,往往会给消费者带来极大的视觉冲击.某些天然食品虽固有颜色,可在一定程度上满足人们的视觉,但因天然食品的颜色受光、热、氧以及加工处理过程的影响,有时会失去其天然色泽,不仅使人们产生食品变质的错觉,而且还降低了商品价值.因此,为了使食品的外观色泽均匀一致,就必须利用各种食用色素来改善食品的感观性状,提高产品的商品性.对饮料生产来说,尤其如此.     

花色苷及微胶囊化天然色素的应用效益

<正> 在食品中添加色素,不但能使产品重获加工时失去的色泽,保证所有批次产品的均匀性,而且还能改进制成品的外观。随着消费者对合成色素安全性的日益关注,天然色素应运而生,在过去数年间,其在全球食品工业中的应用愈来愈广泛。然而,当天然色素从其来源如水果、植物中抽提后,便会因失去原有的保护环境而丧失抗降解能力,采用微胶囊技术将天然色素包埋在     

天然色素用于现代食品工业生产

<正> 从食物中,我们所能够获得的第一感觉,就是食物的色泽与外观,而这些是我们选择食物的先决条件;食物外观如果没有吸引力,就不能引起人们对它的兴趣。 合成色素与天然色素 色素加进食品和饮料中的目的,主要是使食品和饮料更为诱人。由于食品的色泽,会在加工过程中褪色,配合色素的使用则能将之恢复过来;与此同时,通过色     

欧美天然色素市场迅猛发展

《食品与发酵工业》讯，由于天然色素具有天然和健康属性，以及在明亮度和安全性等方面已不低于合成色素，因此世界天然色素市场正以两倍于合成色素的速度迅猛发展。许多消费者已经认识到天然食品与高品质有关，食品上采用自然色调令人产生高品质感，而合成色素在安全和健康方面受到否定时有发生，消费者逐渐产生了对合成色素的怀疑心态。     

天然色素,着色性与功能性俱佳

食用色素与食品密不可分,它能够赋予食品诱人的色泽,为消费者带来强烈的购买欲。食用色素从来源上可分为天然色素和合成色素两大类。顾名思义,天然色素是指来源于天然植物的根、茎、花、叶、果实以及动物和微生物的一类色素的总称;合成色素是指通过人工合成方法制成的有机色素,主要以煤焦油中分离出的苯胺染料为原料制成。在很长一段时间内,     

食品中食用天然色素的作用

色素作为食品添加剂应用于食品中已有几个世纪的历史。除了赋予食品艳丽的外观外,最近的研究表明有一些天然色素还具有多种生理功能,可用于保健食品工业和医药工业等。     

食用天然色素的精制简介

<正> 食用天然色素许多都是由人们食用多年的果蔬食品提取而得的,因而具有安全性高的优点,受到消费者的欢迎。近二十年来它的用量和品种在美国、日本及欧洲许多国家已经远远超过了允许使用的食用合成色素。有的北欧国家已禁止使用食用合成色素,但对EEC颁布的食用天然色素大部分均可按实际需要量添加于任何食品之中。但由于食用天然色素是由天然有机物提取的,原料中成分十分复杂,除含量很低的发色物质外,还有胶质、淀粉、糖     

Influences of moisture absorption and chemical treatments on the resin flow characteristics of natural fibre nonwoven mats

A major challenge for the use of natural fibres in polymeric composites is their incompatibility with commonly used matrices, causing weak interfaces of the final composites. Many surface treatments to natural fibres have been proposed to eliminate or reduce these problems. In this paper, we evaluate the influences of three commonly used natural fibre chemical treatments on the resin flow characteristics of flax fibre nonwoven mats in a vacuum-assisted resin transfer moulding process. The alkalization treatment significantly increases the in-plane permeability and flow anisotropy of the natural nonwoven mat due to changes in fibre diameter, fibre surface tension and mat structure. The effects of silane and acetylation treatments on resin flow are much smaller. It is well known that in comparison with glass fibre, natural fibres can absorb a large amount of moisture from surrounding air. The absorption of moisture causes a considerable reduction in the in-plane permeability of natural fibre nonwoven mats.     

黄酮类化合物对白血病的抗肿瘤作用

天然低共熔溶剂是一种新型绿色溶剂,有望替代传统有机溶剂实现对黄酮等天然产物的高效提取。为了阐明天然低共熔溶剂在黄酮化合物萃取方面的应用,本文对近5年发表的相关研究论文进行了整理和分析,综述了天然低共熔溶剂提取黄酮的研究现状,并详细讨论了影响提取率的各种因素。天然低共熔溶剂在黄酮、黄酮醇、二氢黄酮、花色素、异黄酮等多类天然黄酮产物的提取方面表现良好,其萃取率普遍优于甲醇、乙醇等传统溶剂,且萃取产物活性更高;低共熔溶剂的组成、摩尔比、含水量和温度等条件会显著影响其对黄酮化合物的萃取。文章还对天然低共熔溶剂在未来的发展趋势作出展望,希望能为黄酮化合物的高效、绿色提取提供有益参考。

     

The Structure of Vagueness

Abstract

This article offers an analysis of natural dyes as a means to explicate inherent paradoxes within the subject. One is that natural dyes are not entirely “natural.” The reverse is actually the case, for natural dyes were often added to chemical colors by nineteenth-century industrial dyers. Another paradox is the blurred distinction between natural and chemical dyes which are actually not separate but aligned technologies. Furthermore, textile historians have long regarded dyeing as a stage in finishing, which is neither appropriate nor accurate. This article presents a revised concept of the cultural and technological characteristics of both categories of dyes, a reassessment that engages persistent myths as it also interrogates aspects of gender and production.     

天然维生素E提取工艺研究进展

天然维生素E是一种具有良好生理功能和药理价值的抗氧化剂,具有广阔的开发前景和市场需求。综述了天然维生素E的性质、应用及提取方法,重点介绍了国内外提取天然维生素E的生产工艺,进展情况,对今后开展天然维生素E的进一步深入研究具有一定参考价值。     

Formulation of natural shampoos

Formulating cosmetics using completely natural raw materials is a difficult task. The challenge lies in selecting materials that can be rationally justified as 'natural' and formulating them into cosmetics whose functionality is comparable with their synthetic counterparts. The present paper focuses on the formulation of completely natural shampoos, their evaluation and comparison with commercial herbal shampoos. Attention is drawn to the fact that, due to the ambiguous definition of the word 'natural', several so-called natural cosmetics are available in the Indian market. It is up to the cosmetic chemists themselves to promote and encourage the development and use of truly natural cosmetics.     

现代分离纯化技术在天然植物色素中的应用

植物色素是一类天然色素,具有营养价值高、安全性强等特点,但是植物色素的分离纯化技术仍然是制约天然色素开发的主要因素。本文就国内天然色素的分离纯化研究进展进行了综述并总结,为天然植物色素的研制与开发奠定基础。     

一种新型食品添加剂椰浆粉

<正>由经过特别挑选的新鲜椰子精制而成椰浆粉(COCONUTCREAMPOWDER)产品作为一种新的食品添加剂正逐渐进入中国市场。它是一种纯天然的产品,不含防腐剂、人造色素、香精等添加物。使用十分方便,只需加水调制或直接加入菜肴中即可。通过在菜肴中添加椰子类产品,可以赋予菜肴纯天然的椰子风味及更佳的口感。     

金刚石资源状况与发展综述

天然金刚石矿稀少,与其成矿条件苛刻有关,中国天然金刚石资源在全球天然金刚石资源中占很少比例。而金刚石是现代技术发展的重要战略材料,人工合成是该材料取得重大发展的关键。中国合成金刚石形成了资源数量优势,并存在相关技术及人才优势,合成金刚石需要进一步突破以便使之得到更好利用。文章对天然及合成金刚石资源进行分析,评述了金刚石资源现状及发展,指出人工合成金刚石是中国科技发展的机遇。     

Uncertainty in life cycle greenhouse gas emissions from United States natural gas end-uses and its effects on policy

Increasing concerns about greenhouse gas (GHG) emissions in the United States have spurred interest in alternate low carbon fuel sources, such as natural gas. Life cycle assessment (LCA) methods can be used to estimate potential emissions reductions through the use of such fuels. Some recent policies have used the results of LCAs to encourage the use of low carbon fuels to meet future energy demands in the U.S., without, however, acknowledging and addressing the uncertainty and variability prevalent in LCA. Natural gas is a particularly interesting fuel since it can be used to meet various energy demands, for example, as a transportation fuel or in power generation. Estimating the magnitudes and likelihoods of achieving emissions reductions from competing end-uses of natural gas using LCA offers one way to examine optimal strategies of natural gas resource allocation, given that its availability is likely to be limited in the future. In this study, the uncertainty in life cycle GHG emissions of natural gas (domestic and imported) consumed in the U.S. was estimated using probabilistic modeling methods. Monte Carlo simulations are performed to obtain sample distributions representing life cycle GHG emissions from the use of 1 MJ of domestic natural gas and imported LNG. Life cycle GHG emissions per energy unit of average natural gas consumed in the U.S were found to range between -8 and 9% of the mean value of 66 g CO(2)e/MJ. The probabilities of achieving emissions reductions by using natural gas for transportation and power generation, as a substitute for incumbent fuels such as gasoline, diesel, and coal were estimated. The use of natural gas for power generation instead of coal was found to have the highest and most likely emissions reductions (almost a 100% probability of achieving reductions of 60 g CO(2)e/MJ of natural gas used), while there is a 10-35% probability of the emissions from natural gas being higher than the incumbent if it were used as a transportation fuel. This likelihood of an increase in GHG emissions is indicative of the potential failure of a climate policy targeting reductions in GHG emissions.     

新型代糖-酶解罗汉果苷糖

<正>罗汉果又称拉汗果、假苦瓜、罗晃子、光果木鳖争,学名是Momordica Grosvenori Swingla或SairaitiaGrosvenori Swingla,是一年种,多年收的葫芦科(Cucurbitaceae)藤本落叶植物。 罗汉果营养价值丰富,其干果含有蛋白质,18种氨基酸,其中8种为人体必需氨基酸。成熟果实含有24种无机元素,其中人体必需的微量元素16种。罗汉果含有丰富的维生素C,含量达33.9％-44.1％,其