大豆预处理对浸出粕残油影响的分析

大豆粕残油是众多油厂值得关注和研究的课题，它衡量了生产管理技术水平的高低从大豆预处理对降低粕残油的影响，阐述了大豆预处理四个主要工序的操作技术及工艺参数，并对浸出效果做了分析，结果证明，大豆粕残油是能够降到1％以下的，此经验可为100t／d以下的浸出油厂借鉴     

异丙醇浸出大豆最佳工艺条件的研究

通过对异丙醇浸出大豆的研究，考察了异丙醇浓度、浸出温度、漫出时间、料溶比对大豆粕质量指标残油率、蛋白质含量、蛋白质分散指数（PDI）的影响。通过正交试验，选择的最佳生产工艺条件为：浸出温度78℃、异丙醇浓度95％（wc%）、浸出时间45min、料溶比1：1。     

异丙醇浸出棉籽油的研究

以异丙醇为浸出溶剂，模拟实际生产的罐组式浸出工艺，通过测定粕残油研究棉仁直接浸出的最佳工艺参数，并将最佳工艺条件下制得的棉籽油的基本指标与正己烷制得的棉籽油的基本指标进行比较。通过单因素实验和正交实验得到最优工艺条件为：浸出温度75℃，浸出时间2h，浸出次数4次，料溶比1：2．5，异丙醇体积分数95％，料坯水分8．0％。在此条件下粕残油0．39％，所制备的棉籽油热氧化稳定性远高于正己烷制备的棉籽油。     

大豆粕残油高低不稳定原因与对策

分析了大豆粕中残油不稳定的主要原因，提出了降低粕中残油的有效途径，对指导大豆 浸出生产有一定的作用。     

棕榈残渣浸出取油工艺的研究

对棕榈果榨油后的残渣进行浸出取油工艺的研究。通过单因素试验研究了物料含水率、浸出时间及浸出级数对棕榈残渣浸出取油的影响,并采用正交试验确定最佳浸出工艺条件。结果表明,在浸出温度55℃、液料比6∶1、物料含水率9.72%、每次浸出时间40 min、浸出级数4级的条件下,棕榈残渣中残油达到最低,为0.31%。     

大豆一次浸出粕残油因素的分析

大豆一次浸出粕残油因素的分析江苏省东海油脂食品集团公司（２２２３００）孙立树随着食品工业的发展，大豆粕中蛋白质的利用日益为人们注重。同时，由于大豆中含油偏低，为了降低大豆的加工费用，特别是能源消耗，大豆一次浸出生产方法已成为油脂厂必走的路子。然而，由...     

米渣残油的提取及其脂肪酸组成分析

以米渣为原料,研究利用石油醚提取米渣残油的工艺条件,通过单因素实验和正交实验,探讨了提取温度、料液比、提取时间对米渣残油提取率的影响,并对制备的油脂进行了脂肪酸组成分析.结果表明,最佳工艺条件为:温度20℃,料液比为1:7,浸出时间2h,在此条件下,米渣残油的提取率为8.85%;米渣残油主要由8种脂肪酸组成,其中饱和脂肪酸含量25.5%,不饱和脂肪酸为73%,米渣残油中油酸与亚油酸的比例为1:1.04,符合国际卫生组织推荐的油酸和亚油酸比例为1:1的最佳比例.     

95%乙醇浸出棉仁低温压榨饼的工艺研究

以95%的乙醇为溶剂对棉仁低温压榨饼进行浸出,同时浸出饼中油脂和脱除所含游离棉酚.探讨了原料粒度、原料水分、浸出温度、浸出时间和固液比等因素对粕中残油率和游离棉酚含量的影响.通过正交实验,得出最佳浸出工艺条件为:原料粒度7.5 mm,原料水分小于9%,浸出温度78 ℃,浸出次数12次(每次15 min),固液比1∶ 3.在此条件下,浸出棉粕中残油率为0.91%,游离棉酚含量为0.012 9%,粗蛋白含量为51.81%(N×6.25,干基).     

正戊烷浸出大豆油工艺研究

以大豆坯片为原料,采用罐组式浸出法,正戊烷作溶剂进行浸出研究。通过改变影响因素,选择最优工艺条件,结合实际要求得到正戊烷浸出工艺条件为:浸出温度26℃,浸出次数3次,豆坯水分含量6.63%,豆坯坯厚0.231mm,在此条件下,粕中残油率为1.03%;浸出所得大豆毛油色泽Y70、R2.0,酸价1.81mgKOH/g,不皂化物含量1.73%,磷脂1.31%,并与正己烷浸出进行比较;同时测定浸出大豆粕蛋白含量为57.7%,NSI值82.7%。     

棉仁低温压榨饼己烷/甲醇分步浸出工艺研究

以棉仁低温压榨饼为原料,采用己烷浸出脱脂,然后用甲醇浸出脱除棉酚,制备棉籽蛋白粉.以粕中残油率、游离棉酚含量为考察指标,通过单因素实验和正交实验,确定己烷脱脂最佳浸出工艺条件为:浸出温度55 ℃,原料粒度0.75 cm,水分9%以下,料液比1∶1.2,浸出次数8次(每次15 min);甲醇脱酚最佳浸出工艺条件为:浸出温度60 ℃,粒度0.75 cm,料液比1∶1.3,浸出次数6次(每次15 min).在最佳脱脂脱酚工艺条件下,制得棉籽蛋白粉,其残油率为0.52%,游离棉酚含量为250 mg/kg,粗蛋白含量达到52.10%(N×6.25,干基).     

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.     

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     

Chinese CTP Market

According to Printing and Printing Equipment Industries Association of China（PEIAC）＇s statistics to the plate manufucturer in China, in 2013, the actual offset plate production has reached 346 million square meters in China. Among them, the CTP production volume was 245 million square meters, up by 11% than that of last year; the total sales of the CTP plate was 239 million square meters, up by 13%.     

Preparatory Work of Print China 2015 is Going Smoothly

正Held at Guangdong Modern International Exhibition Center,Print China 2015 will cover 7exhibition halls,besides the original Hall No.3,4,5,6,7,the newly built F zone of Hall 3 will be used too.The total area will be140,000 square meters.Hall 3:Offset and large printing equipment,package printing equipment,post press