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关键词： 蓝墨云班课   信息化教学   教学设计  

摘要： 基于网络教学平台蓝墨云班课的翻转课堂作为一种全新的信息化教学模式已被普遍采用。本文以食品微生物学教学为例,以翻转课堂教学模式为基础,将蓝墨云班课移动网络教学平台应用于实践教学中,加强师生互动交流,提高教学质量和学习效率,为“互联网+教育”背景下,深化职业教育教学改革提供一定的借鉴与参考。

关键词： 食品工程原理   教学改革   自主学习   综合能力培养  

摘要： “食品工程原理”是一门重要基础专业课,做好其理论教学是该课程其他教学环节顺利进行的前提。在新工科背景人才培养的背景下,以培养学生自主学习能力为出发点,从课前、课上、课后3个方面阐述了“食品工程原理”理论教学改革的具体措施,实现“食品工程原理”理论教学效果提高,促进学生独立解决问题和团结协作等综合能力的培养。

关键词： 征稿函   文献索引   复合影响因子   期刊网络出版   中国知网   学术期刊   工程技术   学术影响力  

摘要： 《食品安全质量检测学报》(半月刊)创刊于2010年,是全国首本专注于食品安全与质量领域研究与开发的学术期刊,连续入选中国科技核心期刊库、中国知网学术期刊网络出版总库、万方数据库等,以及国际上英国CABI、英国FSTA、俄罗斯AJ等知名专业文献索引系统。在2020版《中国学术期刊影响因子年报(自然科学与工程技术-2020版)》中的复合影响因子为1.347,质量水平和学术影响力增幅显著,获得专家学者一致好评。目前为中国科技核心期刊。

关键词： ZnO   生长性能   血清指标   土壤金属含量   仔猪  

摘要： 试验旨在研究不同添加量的氧化锌(ZnO)对断奶仔猪生长性能、血清指标和养殖场周边土壤生物化学指标的影响。试验选择21 d的二元杂(长白×约克)断奶仔猪128头(公、母各半)分为4组,每组4个重复,每个重复8头猪。对照组仔猪饲喂基础日粮(A组)、试验组仔猪的基础日粮中依次添加500 (B组)、1 000(C组)和2 000 mg/kg (D组) ZnO。预试期2 d,正式试验期14 d,结果表明:试验C组和D组仔猪末重、平均日采食量、平均日增重均显著高于对照组(P<0.05),试验D组仔猪料重比显著低于对照组(P<0.05)。与对照组相比,试验C组和D组仔猪血清免疫球蛋白G (IgG)含量显著提高(P<0.05);试验B、C和D组仔猪血清谷胱甘肽(GSH)活性显著增加(P<0.05),试验C组和D组仔猪MDA含量显著降低(P<0.05)。不同重金属元素污染程度顺序为:Zn>Cd>Pb>Cr (Ni)>Cu>As>Hg,Cr和Zn呈重度污染。研究表明,日粮中添加1 000、2 000 mg/kg ZnO可保证断奶仔猪的肠道健康,降低土壤污染。

关键词： 智能学习平台   中职   食品工艺学   自主、合作、探究式学习  

摘要： 结合现代信息网络技术,应用智能学习平台,在中职食品工艺学的实训教学中引导学生开展自主、合作、探究式学习,构建以学生为中心、教师科学引导的实训教学模式,进而培养具备"自学能力"、懂得"协作合作"、善于探究创新的新时代高素质食品行业技术人才.

关键词： beta-Glucosidase   Oenococcus oeni   Evolution   Heterologous expression   Biochemistry  

摘要： beta-Glucosidases play an important role in food industry. Oenococcus oeni are typical lactic acid bacteria that initiate malolactic fermentation of wines. 35 beta-glucosidases from O. oeni were selected and their conserved domains and evolutionary relationships were further explored in this study. The homology analysis results indicated that 35 beta-glucosidases were basically derived from GH1 and GH3 family. A novel beta-glucosidase was successfully expressed and characterized. The recombinant protein, referred to as BGL0224, consisted of a total 480 amino acids with an apparent molecular weight of 55.15 kDa and was classified as GH1 family. It achieved the highest activity at pH 5.0 and 50 degrees C. The activity and stability were significantly increased when 12% ethanol was supplemented to the enzyme. Using p-NPG as substrate, the K-m, V-max and K-cat of BGL0224 were 0.34 mM, 382.81 U/mg and 351.88 s(-1), respectively. In all, BGL0224 has good application prospects in food industry.

关键词： 生物化学   教学改革   执业医师  

摘要： 生物化学是医学类院校一门重要的基础学科,内容繁多、理论性强,学生缺乏兴趣和主动性,在历年临床执业医师资格考试中生物化学部分成绩不理想。如何与执业医师资格考试相结合,提升生物化学成绩一直是生物化学教师课程改革的目标。通过激发学生学习生物化学兴趣,采取多元化的教学方法,建立题库,加强真题训练,构建课外便捷学习平台等多种方式,加深其对知识的理解和掌握、培养临床思维能力和解决问题的能力,提高执业医师资格考试的通过率。

关键词： Adaptation   Antioxidant metabolism   Herbicides   Hormesis   Dose-response   Crop yield  

摘要： Hormesis is a favorable response to low level exposures to substance or to adverse conditions. This phenomenon has become a target to achieve greater crop productivity. This review aimed to address the physiological mechanisms for the induction of hormesis in plants. Some herbicides present a hormetic dose response. Among them, those with active ingredients glyphosate, 2,4-D and paraquat. The application of glyphosate as a hormesis promoter is therefore showing promess . Glyphosate has prominent role in shikimic acid pathway, decreasing lignin synthesis resulting in improved growth and productivity of several crops. Further studies are still needed to estimate optimal doses for other herbicides of crops or agricultural interest. Biostimulants are also important, since they promote effects on secondary metabolic pathways and production of reactive oxygen species (ROS). When ROS are produced, hydrogen peroxide act as a signaling molecule that promote cell walls malleability allowing inward water transport causing cell expansion. . Plants'ability to overcome several abiotic stress conditions is desirable to avoid losses in crop productivity and economic losses. This review compiles information on how hormesis in plants can be used to achieve new production levels.