线上线下混合式教学在《果蔬贮藏运销学》中的应用研究

《果蔬贮藏运销学》是食品科学与工程专业核心课程之一,在食品科学专业创新人才的培养中发挥重要作用。本文以贺州学院食品与生物工程学院《果蔬贮藏运销学》正在进行的线上线下混合式教学经验为依托,探究线上线下混合式教学的方法和特点。应用研究发现,线上线下混合式教学能够极大丰富教学内容,提升教学质量,增强学生学习的积极性。由此可知,线上线下混合式教学是实现《果蔬贮藏运销学》教学改革的有效途径。     

省一流专业背景下《发酵工艺原理》以学生为中心的线上线下混合式教学改革与实践

以学生为中心、立德树人的教育理念是当前教学改革的根本宗旨.传统的教学模式已不再适用于当下教书育人的需要,同时限制了我校葡萄与葡萄酒工程专业这一特色学科以及省一流专业的发展.解决以往以教师为中心的教学模式以及考核方式单一等问题,开设课程线上线下混合式教学改革势在必行.该文结合目前葡萄与葡萄酒工程专业培养目标对主干专业课程...     

“食品机械与设备”课程线上线下混合式教学改革实践

“食品机械与设备”是一门工程性实践性较强的课程,传统教学不能达成提高实践能力和工程应用能力的课程目标。为提高教学效果,采用线上线下混合式教学模式进行教学改革,充分发挥线上网络教学与线下课堂教学的优势,在激发学生自主学习能动性的同时,提高学生课堂参与度,锻炼学生的工程应用能力与创新能力。     

基于OBE理念的“食品分析”线上线下混合式教学改革探讨

成果导向教育是工程教育认证的核心理念,越来越受到关注。介绍“食品分析”的课程目标与毕业要求、线上线下混合式教学方法、课程目标评价达成度分析结果,旨在对“食品分析”课程的教学改革提供一定参考。结果表明,基于OBE理念的线上线下混合式教学模式,可以提高学生的课程目标达成度,培养学生的创新能力和职业道德,满足工程教育认证条件下专业人才培养的需求。     

《食品工艺学》混合教学模式的应用效果分析

混合式教学模式已成为高等教育教学改革中的新模式,旨在更高效地提升教学质量,更好地培养专业人才。针对食品科学与工程专业《食品工艺学》专业核心课程的教学现状,根据课程教学目标和教学内容,采用线上学习结合线下学习的教学模式,通过面授教学和翻转课堂教学等教学方式,基于慕课平台开展《食品工艺学》混合式教学模式的应用研究,并结合问卷调查结果,对该模式的应用效果进行了分析。结果表明,《食品工艺学》采用混合式教学模式可有效提高学生的学习效率及自主学习积极性,使学习资源实现多元化、方便化和个性化。该模式也为应用于其他专业课程的教学起到很好的示范效果,可进一步推广应用。     

基于课程思政引领的《食品毒理学》进阶式混合教学模式与实践

混合式教学是未来高校教学模式改革的重要方向。《食品毒理学》是食品质量与安全专业的核心课程,也是实施专业课程思政教学的重要载体。课程组构建了五段进阶混合式教学模式,基于课程思政的教学活动充分发挥学生学习的主体性和自主性,培养学生的协作学习和自主学习能力,拓展学生的视野,构建了师生新型学习共同体。课程思政与线上线下混合式教学的有机融合,对提升大学生的专业知识和专业自信的培养具有重要的意义。     

高校传统工科专业实验实践教学改革模式探索——提升学生工程和创新能力的轻化工程专业实验实践教学体系的构建与实践

为适应轻化工程专业领域产业升级和转型的需求、探索“新工科”背景下轻化工程专业学生实验实践教学改革,四川大学在长期教学改革实践的基础上,对以提高学生的工程及创新能力为目的轻化工程专业实验实践教学体系进行了探索,在实验实践教学的培养目标、培养方案、资源配置等方面进行了继承与创新,构建了实验实践能力培养的“554”协同培养体系“、5+N”实验实践课程体系及“3链融合”的实验项目体系,为提高轻化工程专业人才培养质量、推进一流专业建设提供了强有力的支撑。     

轻化工程专业“综合实验”课程项目化教学改革

立足于轻化工程专业学生实践能力与创新能力培养,进行以项目为中心的“综合实验”课程项目化教学改革探索,提高轻化工程专业人才培养质量。     

基于学生实践创新能力培养的电气专业核心课程建设探索与实践

针对电气自动化技术专业核心课程在开展项目教学中存在的问题,依托网络课程平台,通过行动导向或任务驱动式的项目设计,进行课程教学内容设计与相关文字、视频、动画等资源建设,结合线上线下的混合式教学模式,调动学生自主学习的积极性,最终实现了学生专业综合运用能力与实践创新能力的培养。     

提升高阶能力的食品化学与营养学教学改革

培养高阶能力已是全球共识,面对不同层次的学生需要不同的教育方法和教学实践。依据高阶学习的七要素原则,以食品质量与安全专业为试点班,依托超星泛雅平台建立线上课程,开展食品化学与营养学线上线下混合教学改革。将线上任务点闯关、PBL团队作业等作为线上学习的考核指标以确保线上课程的顺利实施;同时以"薄荷营养师""中国临床营养专业圈"及"Yummly"等App作为教学辅助工具,利用Lingo语言编程,设计小程序以保证学生编制食谱的能力。结果表明:大多数学生(87.8%)认可混合式教学的开展,学生的线上任务点完成率为98.4%;67.1%的学生认为自己在PBL合作中提高了分析能力、综合能力和评价能力;个性化任务让53.7%的学生掌握了营养配餐的能力。通过该课程的改革,为培养地方性院校学生的高阶能力提供了实践参考。     

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