浓缩椰子汁的研制

引言椰子汁是热带植物蛋白饮料，据《本草纲目》记载，椰子汁能止血，治霍乱，疗梅毒，祛署解渴，并对充血性心力裹竭和水肿的治疗有一定的辅助作用，因此颇具开发前途。本研究对“超浓缩椰子汁”生产中原料的处理，稳定剂的选择等问题进行了研究。1．材料与方法1．回材料1．回     

超高压及超高温瞬时灭菌对西瓜饮料品质的影响

研究400 MPa不同加压时间与超高温瞬时（ultra high-temperature,UHT）灭菌对调配西瓜饮料品质的影响。以未经灭菌的调配西瓜饮料为对照,运用流变仪、电子鼻等设备研究不同处理西瓜饮料菌落总数、内源酶、流体类型、黏度及风味的变化。结果表明：加压时间越长,对菌落总数抑制、多酚氧化酶及果胶甲酯酶钝化作用越强;西瓜汁假塑性越明显;且风味与对照组差异越明显;400 MPa、20 min超高压处理与UHT处理对调配西瓜饮料部分品质影响相似,但在保持西瓜饮料风味及色泽等方面优于UHT处理。     

规模化生产植物蛋白饮料椰子汁的研究

近年来植物蛋白饮料椰子汁广受消费者欢迎,但生产过程中存在蛋白质沉淀分层、脂肪球凝聚分离及汁液稳定性差等问题。通过对椰子原料的控制及不同胶体复配稳定体系的构建,彻底解决了椰子汁在货架期内的上述问题;通过添加D-异抗坏血酸钠,有效地减少了椰子汁产品的色泽变化和口感氧化问题。     

日本三项饮料产品标准在京顺利通过审定

2007年9月27～28日,中国饮料工业协会和全国食标委饮料分委会共同组织了《茶饮料》国家标准、《含乳饮料》国家标准、《植物蛋白饮料豆奶（豆浆）和豆奶饮料》行业标准3项标准的审定会。3项标准均由中国饮料工业协会技术工作委员会牵头起草，目前，技术工作委员会已完成包括这3项标准及《饮料通则》、《浓缩苹果浊汁》、《植物蛋白饮料杏仁露》、《植物蛋白饮料椰子汁及复原椰子汁》、《碳酸饮料》在内的8项国家、行业标准。     

超高压加工对天然椰子汁品质的影响

采用200～600MPa压力对天然椰子汁处理10min,研究其理化性质、营养品质、抗氧化活性及感官品质的变化情况。结果表明：经高压处理后椰子汁的可溶性固形物、pH值、总糖、总酸及总酚含量与空白样相比无显著差异(P＞0.05);VC含量减少较显著,保存率为87.9%～97.6%;氨基酸在500、600MPa处理后含量显著增加(P＜0.05);抗氧化活性在400MPa处理后显著降低,600MPa处理后显著增加(P＜0.05)。感官评定结果表明：400MPa超高压处理10min的椰子汁与椰子原汁相比无明显差异,因此,采用超高压处理能较好地保持天然椰子汁的风味和营养品质。     

豆奶、杏仁露、椰子汁等植物蛋白饮料的品质控制

用质量管理体系中的危害性分析方法，对豆奶、杏仁露、椰子汁等植物蛋白饮料的生产工艺进行了分析，对影响产品品质的主要工序进行了分析研究，确定了关键控制点及范围，以提高植物蛋白饮料的质量管理水平，确保产品质量的稳定．     

国宴饮料 国粹精品

椰树集团是以生产中国名牌——椰树牌天然椰子汁等系列产品而闻名于世的,是我国著名的民族饮料工业企业,也是我国最大的天然果汁饮料生产企业之一。其中.椰树牌天然椰子汁、火山岩矿泉水和天然芒果汁产品以其优异的品质相继被指定为“中国国宴”饮料,在国事活动中先后接待了150多位国家元首和政要。产品还出口远销美国、加拿大、澳大利亚、日本、南非以及港、澳、台等35个国家和地区。     

新版杏仁露、椰子汁和复原椰子汁行业标准正式发布实施

2006年12月17日，国家发展和改革委员会2006年第90号公告批准发布了一批新的行业标准：其中，由中国饮料工业协会技术工作委员会负责组织并参与修订起草的两项标准《植物蛋白饮料椰子汁及复原椰子汁》和《杏仁露》位列其中，标准号分别为QB/T2300—2006、QB/T2438—2006，标准实施日期为2007年8月1日。     

基于微波吸油膨胀处理的燕麦露加工工艺研究

以燕麦为原料,采用微波吸油膨胀处理,通过酶解、高压均质、灭菌等工艺,制作一款零添加的健康燕麦露饮料.本文主要针对微波吸油膨胀处理燕麦的工艺条件进行优化,以燕麦米吸油率和燕麦露感官评价为指标,研究植物油添加量、微波加热火力、微波处理时间、燕麦平铺厚度对燕麦露品质的影响.结果 表明,燕麦露饮料最佳加工工艺:饮料中燕麦基比例...     

荸荠椰子汁复合饮料的研制

以荸荠汁和椰子汁为主要原料研制饮料,对乳化剂用量、羧甲基纤维素钠用量、荸荠汁用量等主要因素进行了研究,通过响应面分析确定了荸荠椰子汁饮料的配方。结果表明,复配乳化剂的最佳亲水亲油平衡值为7。荸荠椰子汁的最优配方为乳化剂用量0.3%、CMC-Na用量2.0%、荸荠汁用量3.0%,所得产品感官评分为8.8分,能达到最佳的稳定性、色泽与风味。     

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.     

An internet compendium of analytical methods and spectroscopic information for monomers and additives used in food packaging plastics

An internet website (http://cpf.jrc.it/smt/) has been produced as a means of dissemination of methods of analysis and supporting spectroscopic information on monomers and additives used for food contact materials (principally packaging). The site which is aimed primarily at assisting food control laboratories in the European Union contains analytical information on monomers, starting substances and additives used in the manufacture of plastics materials. A searchable index is provided giving PM and CAS numbers for each of 255 substances. For each substance a data sheet gives regulatory information, chemical structures, physico-chemical information and background information on the use of the substance in particular plastics, and the food packaging applications. For monomers and starting substances (155 compounds) the infra-red and mass spectra are provided, and for additives (100 compounds); additionally proton NMR are available for about 50% of the entries. Where analytical methods have been developed for determining these substances as residual amounts in plastics or as trace amounts in food simulants these methods are also on the website. All information is provided in portable document file (PDF) format which means that high quality copies can be readily printed, using freely available Adobe Acrobat Reader software. The website will in future be maintained and up-dated by the European Commission's Joint Research Centre (JRC) as new substances are authorized for use by the European Commission (DG-ENTR formerly DGIII). Where analytical laboratories (food control or other) require reference substances these can be obtained free-ofcharge from a reference collection housed at the JRC and maintained in conjunction with this website compendium.     

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.     

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.     

Analysis of benzo[a]pyrene in spiked fatty foods by second derivative synchronous spectrofluorimetry after microwave-assisted treatment of samples

A simple, rapid and inexpensive method has been developed for the determination of benzo[a     

The development of reference materials for paralytic shellfish poisoning toxins in lyophilized mussel. II: Certification study

This paper describes the second part of a project undertaken to develop certified mussel reference materials for paralytic shellfish poisoning toxins. In the first part two interlaboratory studies were undertaken to investigate the performance of the analytical methodology for several PSP toxins, in particular saxitoxin and decarbamoyl-saxitoxin in lyophilized mussels, and to set criteria for the acceptance of results to be applied during the certification exercise. Fifteen laboratories participated in this certification study and were asked to measure saxitoxin and decarbamoyl-saxitoxin in rehydrated lyophilized mussel material and in a saxitoxin-enriched mussel material. The participants were allowed to use a method of their choice but with an extraction procedure to be strictly followed. The study included extra experiments to verify the detection limits for both saxitoxin and decarbamoyl-saxitoxin. Most participants (13 of 15) were able to meet all the criteria set for the certification study. Results for saxitoxin.2HCl yielded a certified mass fraction of <0.07 mg/kg in the rehydrated lyophilized mussels. Results obtained for decarbamoyl-saxitoxin.2HCl yielded a certified mass fraction of 1.59+/-0.20 mg/kg. The results for saxitoxin.2HCl in enriched blank mussel yielded a certified mass fraction of 0.48 +/- 0.06 mg/kg. These certified reference materials for paralytic shellfish poisoning toxins in lyophilized mussel material are the first available for laboratories to test their method for accuracy and performance.     

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