红枣乳酸发酵饮料的研制

以红枣为原料，经乳酸发酵制成发酵饮料。通过对产品的工艺条件进行试验，得出枣浆最佳发酵条件为：接种量5％，发酵温度42℃，培养时间6h，乳糖1％，蔗糖12％；稳定剂添加量为：琼脂0.15％，黄原胶0．09％，海藻酸钠0．06％，杀菌条件：温度85℃，时间10min，最终使饮料的pH值调到3．7。     

红枣保健饮料的研制

以红枣为原料，用经驯化的乳酸菌发酵制成红枣乳酸发酵饮料。通过正交试验和感观评定，确定了最佳工艺参数：接种量6％、发酵温度42℃、培养时间6h、乳糖2％、蔗糖8％；复合稳定剂0．25％；杀菌条件85℃，15min。     

酶解法生产红枣汁的工艺研究

以红枣为原料，采用果胶酶进行酶解处理，并对预煮工艺和酶解浸提工艺进行了探讨。通过试验确定最佳预煮条件为：预煮温度100℃，预煮时间20min，料水比1：6；酶解浸提的最佳工艺条件为：加酶量0．25％，酶解时间1．5h，酶解温度50℃，pH值3．5。实验表明，在该工艺下提取率可达54．17％，所得枣汁色泽自然、枣香浓郁、酸甜爽口。     

安琪超级酿酒干酵母在酒精浓醪发酵中的应用

采用安琪超级酿酒干酵母，以玉米、木薯为原料的酒精浓醪发酵，最佳工艺条件为：①液化条件：耐高温α-淀粉酶10～20μ／g，60～70℃润料30min，90～95℃液化90min；②糖化条件：糖化酶100～200u／g，无糖化；③pH：4．0～5．0；④发酵温度：30～35℃；⑤酵母接种量：实验室小试接种量为原料的0．2％，中试接种量0．05％～0．1％，大生产接种量在0．02％～0．05％。采用双酶法连续发酵工艺，要求原料粉碎细，料水比适当（1：2．3～2．5）。（小凡）     

含酒精型玉米发泡饮料的工艺研究

对以玉米为主要原料，以啤酒酵母为菌种，发酵酿制低酒精度的发泡饮料进行了研究。通过试验确定了蒸煮最佳工艺条件，时间为50min，打浆加水比为1：4，菌种的用量为10％；液化温度70℃、25min、pH5．5、α-淀粉酶用量0．25％：糖化温度61℃、1h、pH4．5、糖化酶用量0．5％：发酵温度15℃、48h、pH6．5、啤油酵母用量10％。酿制的产品具有千米特有的香味和营养价值。     

南瓜百合醋的研制

以南瓜为原料，辅以百合精粉，采用液态发酵法制取南瓜百合醋。通过单因素试验确定最佳液化及糖化条件，采用正交试验优化醋酸发酵工艺条件参数。试验表明，原料液化及糖化的适宜条件为：液化酶的加入量为5％，温度95℃，17min；糖化酶用量0．5％。温度65℃。醋酸发酵最佳工艺条件为：醋酸菌接种量10％，酒精加入量4％，56℃发酵5d。所酿制的南瓜百合醋酸味柔和，具有醋香味和浓郁的南瓜香气。     

棒曲霉GM-69深层发酵生产木聚糖酶的研究

报道了发酵条件对棒曲霉GM-69产木聚糖酶的影响，并用50L发酵罐进行了深层发酵试验。确定产酶摇瓶培养的最佳条件：培养时间为72h，温度为28℃，培养基起始pH为3．8，接种量为5％(V／V)，转速为250r／min，装液量为90mL／500mL三角瓶。其酶活力最高362IU／mL，平均为343IU／mL，比培养条件优化前增加了55．6％。50L发酵罐发酵最佳条件：转速为400r／min，通风量为1：0．6～1，罐压为0．08Mpa，装量为700，发酵周期为72h，温度28℃，培养基起始pH3．8，接种量5％(V/V)，酶活力平均为351IU／mL。     

枣酒发酵工艺的研究

以甘肃省特产临泽小枣为原料 ,研究枣酒发酵生产工艺。研究结果表明红枣最适烘烤条件为烘烤温度 12 0℃ ,烘烤时间 15min。采用在含还原糖 10 %的红枣清汁接种发酵 6 0～ 72h后补加白砂糖的发酵工艺。发酵条件为H2 SO3 添加量 10 0mg/L ,干酵母添加量 0 .2 %～ 0 .3% ,发酵温度 2 6～ 2 8℃ ,发酵时间为 6～ 7d。发酵原酒经冷热处理、澄清过滤和后修饰得到酒精含量 >11.5 0 % (v/v)的红枣酒     

果肉型半发酵苹果饮品的研究

试验以苹果为原料，经复合酶发酵制成发酵饮料。该饮料产品口味独特，既有发酵酒精的酒香，又有苹果的特殊香气；产品外观为诱人的浅黄色或金黄色。通过对产品的工艺条件进行试验，得出苹果汁最佳发酵条件为：接种量0．7％（以苹果汁计，以下相同），发酵温度30℃，发酵时间1d，白砂糖40％，Vc0.15％；稳定剂添加量为：黄原胶0．06％。海藻酸钠0．03％，羧甲基纤维素钠0．06％；杀菌条件：温度85℃，时间30min。     

软枣猕猴桃酒精发酵饮料的研制

以软枣猕猴桃和啤酒花为主要原料,经发酵研制低度酒精发酵饮料。主要研究了软枣猕猴桃酒精发酵饮料的配方和工艺。通过L9（3^4）正交试验确定了该饮料的最佳配方为：软枣汁15％、啤酒花0．8％、白砂糖12％、柠檬酸0．10％;最佳发酵工艺条件为：酵母菌接种量0．10％、发酵温度20℃、发酵时间12h。     

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.     

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.     

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.     

Contribution of European research to risk analysis

The European Commission's, Quality of Life Research Programme, Key Action 1—Health, Food & Nutrition is mission-oriented and aims, amongst other things, at providing a healthy, safe and high-quality food supply leading to reinforced consumer confidence in the safety of European food. Its objectives also include the enhancing of the competitiveness of the European food supply. Key Action 1 is currently supporting a number of different types of European collaborative projects in the area of risk analysis. The objectives of these projects range from the development and validation of prevention strategies including the reduction of consumers risks; development and validation of new modelling approaches; harmonization of risk assessment principles, methodologies, and terminology; standardization of methods and systems used for the safety evaluation of transgenic food; providing of tools for the evaluation of human viral contamination of shellfish and quality control; new methodologies for assessing the potential of unintended effects of genetically modified (genetically modified) foods; development of a risk assessment model for Cryptosporidium parvum related to the food and water industries; to the development of a communication platform for genetically modified organism, producers, retailers, regulatory authorities and consumer groups to improve safety assessment procedures, risk management strategies and risk communication; development and validation of new methods for safety testing of transgenic food; evaluation of the safety and efficacy of iron supplementation in pregnant women; evaluation of the potential cancer-preventing activity of pro- and pre-biotic ('synbiotic') combinations in human volunteers. An overview of these projects is presented here.     

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.