雪菊、决明子、金银花复合保健凉茶饮料工艺研究

以雪菊、决明子、金银花为原料研究复合保健凉茶饮料的制备工艺,首先确定了雪菊的最佳浸提工艺为料水比1∶80、温度80℃、时间15min,再通过感官评价及正交试验确定了雪菊、决明子、金银花复合保健凉茶饮料的最佳配方为雪菊汁30%、决明子汁15%、金银花汁10%、白砂糖5%、水40%（百分比均为质量分数）。     

无糖决明子保健茶的研制

以决明子为主要原料,三氯蔗糖和甜菊糖苷为甜味剂进行复配开发无糖决明子保健茶。采用单因素试验对决明子浸提液的制备进行研究,通过正交试验研究无糖决明子保健茶饮料的制作工艺。最终确定决明子浸提液的最佳浸提工艺为:浸提比例1∶40(g/mL),温度80℃,浸提时间1 h,浸提次数为3次;决明子保健茶饮料的最佳配比:决明子浸提液80 mL,三氯蔗糖稀释液30 mL(0.006%),甜菊糖苷稀释液15 mL(0.003%)。     

无糖型虫草饮料的研制

对利用人工虫草子座开发无糖型饮料的生产工艺条件进行探讨。以感官品质为指标,采用对比实验和正交实验,优化虫草浸提条件和产品配方。结果表明,虫草粉选用80℃水温、料水质量比为1∶100,浸提40min,经过滤、离心得到精制虫草浸提液,每升饮料中加入精制虫草浸提液320mL、木糖醇30g、麦芽糖醇30g、结晶山梨醇15g、柠檬酸0.8g、复合稳定剂1g进行调配,经杀菌可得到风味浓郁、清爽宜人的无糖型虫草饮料产品。     

苦荞海带无糖复合饮料的研究

以苦荞浸提液、脱腥海带浸提液和木糖醇为原料,采用单因素试验和正交试验的方法研制苦荞海带无糖复合饮料。在柠檬酸添加量为0.3%的基础上,确定复合饮料的最佳配比为:每100ml复合饮料中,苦荞浸提液为14ml,海带浸提液为6ml,木糖醇为6g。     

粉葛榕树须凉茶的研制

以粉葛、榕树须、绿茶为主要原料制成粉葛榕树须凉茶,以总黄酮含量为评价指标,考察浸提时间、浸提温度、料液比对粉葛浸提液制备效果的影响,采用正交试验优化粉葛浸提液的制备工艺。以感官评分、可溶性固形物含量为评价指标,采用正交试验优化粉葛榕树须凉茶配方。结果表明,粉葛浸提液制备最佳工艺条件为浸提时间120 min,浸提温度90℃,料液比1∶10（g/mL）。粉葛榕树须凉茶最优配方为榕树须浸提液添加量30%,粉葛浸提液添加量35%,绿茶浸提液添加量10%,白砂糖添加量1%。最优配方下所得凉茶茶多酚含量为209.14 mg/kg,可溶性固形物含量为8%,咖啡因含量为40 mg/kg,浊度为63.4 NTU。所得粉葛榕树须凉茶澄清透明、色泽稳定、香气自然而浓郁,口感柔和。货架期口感品评和稳定性观察结果表明,产品可以满足6个月保质期。     

黄精保健醋的研制及其稳定性的研究

为发掘我国中草药资源,对以黄精浸提液、酿造食醋和砂糖等制作的黄精保健醋饮料的配方进行了研究,通过正交实验,确定了黄精保健醋的配方.开发出了口味独特,具有较高保健功能的黄精醋饮料.结果表明:黄精保健醋的最佳配方为:食醋30%,黄精浸提液9%,糖12%.     

狗肝菜凉茶的研制

以狗肝菜为原料制备凉茶。用水浸提狗肝菜制备凉茶,并对其进行感官评价,采用分光光度法和硫酸-苯酚法测定黄酮和多糖含量。最佳工艺条件为浸提温度90℃,料液比1∶55(g/mL),浸提时间75 min,糖添加量0.7%。所制备的凉茶中黄酮含量为1.12 mg/100 mL,多糖含量为92.27 mg/100 mL,黄酮和多糖回收率较高。研制出的狗肝菜凉茶口感和谐、风味独特,具有较好的保健功能。     

无糖刺五加饮料的研究

通过正交实验确定了刺五加黄酮浸提的最佳条件和甜味剂与增稠剂的添加量,其中刺五加浸提的最佳提取条件为料水比1：100、80℃、15min;无糖刺五加饮料的最佳配方为：浸提液80%、木糖醇2.0%、蛋白糖0.035%、甜菊糖0.003%、CMC-Na0.04%、黄原胶0.04%、柠檬酸0.03%.     

苦瓜海带复合无糖饮料的研究

以苦瓜汁、海带浸提液、木糖醇为原料研制复合无糖饮料。通过单因素试验和正交试验,得到该饮料的最佳配比为：每100ml复合饮料中含苦瓜汁18ml、海带浸提液28ml、木糖醇5g。     

一种无蔗糖调味茶饮料的工艺及配方

选用茉莉花茶和红茶作为原料,以木糖醇、赤藓糖醇和罗汉果提取物为甜味剂,研究低热量的无蔗糖调味茶饮料。通过正交试验和感官评价测试确定较优的茶叶浸提工艺条件及饮料配方,结果表明:茶叶的最佳浸提工艺条件:在料液质量比1︰500条件下,红茶与茉莉花茶质量比为1︰1.5,浸提温度为80℃,浸提时间为20 min;较优的饮料配方为木糖醇3.2%,赤藓糖醇1.8%,罗汉果提取物0.14%,其余量为茶叶浸提液和香精等。     

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).