香蕉粉及香蕉花生酱的加工工艺研究

该试验以香蕉和花生为原料对香蕉的护色、干燥方法及香蕉花生酱的加工工艺进行了研究。试验结果表明:香蕉去皮后,用0.2%柠檬酸 0.01%维生素C溶液浸泡10min护色、打浆,在75℃下热风干燥60min,得到香蕉粉,香蕉花生酱的最佳配方为花生酱73%、香蕉粉15%、单甘酯2%、蔗糖5%、植物油5%;香蕉花生酱适宜的杀菌条件为121℃,16min。     

出口袋装四季豆加工过程中的护绿研究

对四季豆在加工过程中所采用的护绿措施以及护绿效果进行了研究 ,探讨护绿方法和工艺条件。结果表明 ,经过挑选分级的四季豆于 95～ 10 0℃水中烫漂 1 5min左右 ,充分快速冷却后置于 pH 1 5柠檬酸溶液中 ,室温褪色 2 5h ,流动水浸泡去除多余的酸后 ,于 85℃、30 0mg/LCuSO4 溶液中浸泡 2 5min ,流动水冷却清洗 2h至水无色 ,随后放入质量分数为0 6 %CaCl2 溶液中浸泡 10～ 15min ,捞起后放到 pH 4 2柠檬酸溶液中以四季豆占 6 0 % ,柠檬酸溶液占 4 0 % ,包装封口 ,于 85～ 90℃水浴杀菌 2 0～ 30min。所得产品质地良好 ,色泽理想。     

从小麦麸皮中提取植酸钙的生产工艺

采用稀酸萃取加碱中和沉淀法从小麦麸皮中提取植酸钙。利用正交法找出了最佳工艺条件:反应温度30℃、水料浸提比8∶1、浸泡酸度pH为2~2.5、絮凝剂为5%的氯化钠、浸泡时间为6h~8 h、中和剂采用Ca(OH)2和10%的NaOH溶液、中和酸度为先用Ca(OH)2中和pH至5,再加10%的NaOH溶液中和pH至7.5左右。     

核桃仁复合饮料的研制

以核桃仁为主要原料,添加适量的荷叶浸提液、增稠剂、乳化剂及其他辅料,研制出核桃仁复合饮料.在实验中解决了核桃仁脱皮、护色、稳定等问题.结果表明:(1)去皮用3%煮沸的NaOH溶液处理核桃仁3～5 min;(2)护色用0.5%的NaCl和0.02%NaSO3的混合液浸泡脱皮后的核桃仁3～4 h;(3)向核桃仁浆液中添加2.0 mL的荷叶浸提液,可以有效地提高产品的品质和延长其保质期;(4)去除苦味在0.4%β-环状糊精溶液中处理1.5 h;(5)饮料配方:5.5%蔗糖,0.4%吐温,0.06%单甘酯,0.3%CMC-Na,0.2%黄原胶,浆液适量.     

水芹菜软包装产品加工工艺的研究

对水芹菜软包装产品的加工工艺进行了研究。结果表明,水芹菜在浓度0.05%～0.10%的Na2CO3或NaOH溶液中预浸泡30min后,再在95℃的200/50mg.kg-1Cu2 /Zn2 的护绿液中热烫3min、然后在常温条件下在该护绿液中浸泡3h,可使产品获得稳定的护绿效果。采用质量分数为0.2%的CaCl2溶液对水芹菜进行浸泡30min可明显改善其脆度。该水芹菜软包装产品在常压沸水中杀菌10min可达到商业无菌标准。     

开袋即食鱼腥草方便食品加工工艺的研究

研究了鱼腥草的护色保脆技术及其方便食品的加工工艺。采用L9(34)正交设计,确定了最佳的保脆技术和杀菌条件。结果表明,新鲜鱼腥草洗净切段,用0.2?Cl2和2%NaCl混合液在室温条件下硬化处理90min,再用0.2%柠檬酸结合0.2%NaHSO3溶液在室温条件下护色浸泡90min,经漂洗、调味腌制后进行真空包装,杀菌公式为3-10min/85℃。     

调配和杀菌条件对酒糟鱼品质的影响

为缩短酒糟鱼的生产周期,采用调配法制作酒糟鱼.研究调配工艺和杀菌温度对酒糟鱼品质的影响.结果表明,酒的品种、蔗糖用量、浸泡温度和杀菌温度对酒糟鱼的理化成分含量、色泽、质构特性和感官品质具有重要影响.将腊鱼于10%蔗糖黄酒溶液(1:1,w/v)中10℃浸泡24 h,真空包装后115℃灭菌30 min,所制作的酒糟鱼品质最好.     

出口袋装四季豆加工过程中的护绿研究

对四季豆在加工过程中所采用的护绿措施及其护绿效果进行了研究 ,探讨护绿方法和护绿工艺条件。结果表明 :经过挑选分级的四季豆于 95～ 1 0 0℃水中烫漂 1 .5min左右 ,快速充分冷却后置于 p H1 .5的柠檬酸溶液中 ,室温褪色2 .5h,流动水浸泡去除多余的酸后 ,于 85℃ 30 0 mg/ LCu SO4溶液中浸泡 2 5min,流动水冷却清洗 2 h至水无色 ,随后放入0 .6% Ca Cl2 溶液中浸泡 1 0～ 1 5min,捞起后袋装 ,并加入占总量 40 %的 p H4.2的酸液后封口。于 85～ 90℃水浴杀菌 2 0～30 min。所得产品质地良好 ,色泽理想。     

果汁饮料杀菌工艺的验证

采用微生物挑战试验验证果汁饮料杀菌工序温度控制在(90±2℃),持续10min、15min后杀菌的效果。结果表明,往果汁饮料经(90±2℃)水浴持续杀菌10min和15min后,其对大肠杆菌、金黄色葡萄球菌、酿酒酵母、黑曲霉的杀菌率均大于99.99%,但杀菌后的果汁保存3个月后,(90±2℃)水浴持续杀菌10min的果汁有部分霉菌和酵母计数达到15cfu/m L,而(90±2℃)水浴持续杀菌10min的果汁细菌总数及霉菌和酵母计数均小于10cfu/m L,(90±2℃)水浴持续杀菌15min的杀菌效果良好,用于果汁杀菌安全有效,达到杀菌目的。     

无铬鞣制皮革

[5 8 ]　　 1　准备工段中的浸水、浸灰同常规 ,去肉、剖层后按如下工艺进行水 30℃ 15 0 % 10 min,排液水 30℃ 10 0 ?CAL N0 .5 % 2 0 min,排液水 30℃ 10 0 ?CAL N 2 %硫酸铵 1%CL ETAPON FU2 0 0 0 . 5 %4 5 min,p H7. 5 - 8. 0CODYEMAC1. 0 M　 10 min,检查 ,排液 ,水洗水 2 0℃ 30 %盐 7%CL ARIENE 1% 15 min,7-8Bé甲酸 (1∶ 10 ) 1.2 % 2× 10 min 4 0 min硫酸 (1∶ 2 0 ) 0 .8% 3× 15 min 180 min,自动过夜次日转动 15 min硫代硫酸钠 2 % 30 min,p H:3.2 - 3.4 ,切口检查要求透FLORETAN DL D 1. 5 …     

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.