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  • 1  A Programming Method for Machining Elliptic Gear on NC WEDM Machine Tool
    Zhou Yijie
    1995, 14(4).
    [Abstract](3443) [HTML](0) [PDF 301.96 K](3192)
    Abstract:
    This artical introduces a method of locating the teeth and determining the teethshap when machining elliptic gears on NC WEDM machine tool,gives out a opinion aboutunstandard module which is somewhat better than standard module when machining elliptic gea
    2  Design of Visual Measuring System with CCD
    SHEN Ai hong
    1999, 18(3).
    [Abstract](3258) [HTML](0) [PDF 554.58 K](3734)
    Abstract:
    The scheme of the measurement system of CCD is presented in this paper.A new optical is proposed,which uses background illumination,parallel light to project on the workpiece,high speed rotating mirror as an optical compensation,and a CCD camera as a phot
    3  A Novel Technology on Production of Ethanol by High Gravity Fermentation and Feedstuff by Lacti-transformation
    吴天祥 杨海龙 石贵阳 章克昌
    2003, 22(4).
    [Abstract](3257) [HTML](0) [PDF 211.50 K](2850)
    Abstract:
    以玉米为原料,耐高温耐高酒精度的活性干酵母为发酵剂进行浓醪酒精发酵实验,对糖化发酵工艺过程中酒精度、总糖、还原糖、酸度以及CO2失重等指标的过程变化进行了研究.并利用一株嗜酸乳酸杆菌,以酒糟为基质进行酒糟混合料的乳酸发酵实验.结果表明玉米原料经酒精浓醪发酵60 h后,玉米发酵醪中酒精体积分数达12.8%,残总糖质量分数为3.46%,残还原糖质量分数为0.19%,淀粉利用率89.88%以上.酒糟混合料接种乳酸菌,33 ℃条件下发酵15 d,发酵后酒糟混合料水分质量分数为53%,粗蛋白质量分数18.62%,粗脂肪质量分数3.32%,粗纤维质量分数3.95%,17种氨基酸质量分数达18.3%;乳酸质量分数1.93%,每克酒糟发酵料含乳酸菌菌数为4.2×107个,达到所设计乳酸菌菌数的要求.
    4  Effect of Egg Yolk Powder Hydrolysis Bonepep on the Bone Metabolism
    WU Jing SONG Xing-an Kenji Horie Mujo Kim LIU Li-ming
    2013, 32(11):1227-1231. DOI: 10.3969/j.issn.1673-1689.2013.11.017
    [Abstract](3084) [HTML](0) [PDF 795.94 K](6205)
    Abstract:
    In this manuscript,the effect of the egg yolk powder hydrolysis(Bonepep) on bone metabolism was investigated at rat and human level. When 10 mg/(kg·d) and 100 mg/(kg·d)Bonepep was fed to SD mice led the mice tibia elongation increased by 4.5% and 10.3%,respectively. And the physiological and biochemical indexes of mice were constant when mice were explored to high doses of Bonepep for long time. It was found that Dpyr level in urine was decreased 84.6%,and the thigh bone was significantly reduced when mice was fed Bonepep. For the female volunteers,the level of DPD and NTx,reflect the characters of bone resorption,were not significantly changed,after 5 weeks continuous taking Bonepep. However,the BALP activity,a index for bone formation,was increased by 14.6%. These results demonstrated that the egg yolk powder hydrolysis Bonepep could effectively inhibit osteoclast differentiation but promote bone growth.
    5  Next Generation Fermentation Engineering: Missions and Challenges
    ZHOU Jingwen GAO Song LIU Yanfeng LI Jianghua DU Guocheng CHEN Jian
    2021, 40(1):1-11. DOI: 10.3969/j.issn.1673-1689.2021.01.001
    [Abstract](2948) [HTML](0) [PDF 3.90 M](2256)
    Abstract:
    In the past few centuries, fermentation engineering has experienced the conversion from natural fermentation into metabolic engineering. The fermentation products were also shifted from food and other means of life to more basic industrial materials. Has made great progress in strain selection, process control, separation technology, etc. In the past three decades, the rapid development of biotechnology has provided an important foundation for the development of fermentation engineering in the new era, enabling scientists and engineers to achieve more goals through fermentation engineering, and supporting other industries, such as pharmaceutical industry, food industry, agriculture and animal husbandry, energy and materials, textile, paper and leather industry, daily chemical industry, environment and ecology. In the 21st century, the contradiction between human sustainable development and ecological environment, resources and energy is increasingly prominent. How to play the key role of fermentation engineering is also a major task of fermentation engineering researchers. The developments of systems biology, synthetic biology, bioinformatics, advanced materials science and so on have also significantly revolutionized fermentation engineering. The utilization of advanced biotechnology can achieve a series of unprecedented changes, such as the transformation of aerobic fermentation to anaerobic fermentation, the artificial synthesis of microbial community of fermented food, the construction of autotrophic microbial fermentation plant, artificial synthetase, etc., so that more difficult challenges in the future could be successfully accomplished by fermentation engineering.
    6  The Study of Mechanism of Lime Soap Dispersed Effect
    Tong Youyong Zheng Guirong Zhou Heyun
    1989, 8(1).
    [Abstract](2905) [HTML](0) [PDF 630.98 K](2644)
    Abstract:
    本文主要应用钠、钙离子选择电极、离子计、微电泳仪、表面张力仪对油酸钠和两种类型钙皂分散剂的体系的抗机理进行研究。初步论证了合胶束的形成过程及其组成。解释了一些过去尚不十分清楚的有关问题。
    7  THE PRAOTICE on DETERMINATION of P. D. I
    Zhang Daiyu Lu Jifon
    1984, 3(3).
    [Abstract](2860) [HTML](0) [PDF 303.04 K](3070)
    Abstract:
    The determination of the P.D.I. of soybean products plays an important rule in evaluating the degrec of their denaturation and their quality. Recently, this kind of determination has been carried out by some institutes in our country. But the unification
    8  Research Status and Progress on β-Galactosidase
    DONG Yining CHEN Haiqin ZHANG Hao CHEN Wei
    2018, 37(4):337-343. DOI: 10.3969/j.issn.1673-1689.2018.04.001
    [Abstract](2520) [HTML](0) [PDF 892.64 K](3539)
    Abstract:
    β-Galactosidase is an important food biocatalyst,which possesses transglycosylation and hydrolysis of β-1,4 glycoside bonds. These catalytic have been widely used in galacto- oligosaccharides production and lactose hydrolysis. As an important member of glycoside hydrolase family,it has accumulated rich results on research of theory and application of β-galactosidase. In this paper,it is reviewed from perspectives of theory and application,including distribution of β-galactosidase in glycoside hydrolase family,theory of catalytic mechanism,progress on structure research,and development of specific functional. This article is intended to provide reference for further research on the catalytic mechanism regulation and the application development of β-galactosidase.
    9  Progress of Analytical Methods for Antioxidant Capacity in Vitro
    WANG Xiao-yu DU Guo-rong LI Hua
    2012, 31(3):247-252. DOI: 10.3969/j.issn.1673-1689.2012.03.004
    [Abstract](2483) [HTML](0) [PDF 271.75 K](26579)
    Abstract:
    Due to high antioxidant activity,many foodstuffs and beverages such as fruits,vegetables,tea,and red wine were exhibited the excellent beneficial influence on human health.With increasing interest in the function and diversity of antioxidants in foods,several in vitro methods for measuring antioxidant activity of food,beverages and biological samples have been developed.The most commonly assay methods include oxygen radical absorbance capacity(ORAC),reducing power,determination of total phenols,2,2-azino-di-(3-ethylbenzothialozine-sulphonic acid)(ABTS),2,2-diphenyl-1-picrylhydrazyl(DPPH),hydroxyl radical-scavenger activity,superoxide radical-scavenger activity and lipid peroxidation inhibition.These methods differ in terms of their assay principles and experimental conditions.This review describes the methodology for assessing in vitro antioxidant capacity,including the principles,characteristics,merits and drawbacks of every method.In addition,their current status and problems in practical application are critically evaluated.
    10  Research Progress and Market Status of Health Food-Indigestible dextrin
    SU Huibo LIN Hailong
    2014, 33(1):1-7. DOI: 10.3969/j.issn.1673-1689.2014.01.001
    [Abstract](2462) [HTML](0) [PDF 905.96 K](9649)
    Abstract:
    Indigestible dextrin is low-calorie dietary fiber,with many physiological functions such as reducing blood fat and pressure,preventing blood glucose increase and diseases,enhancing stomach function and facilitating proliferation of probiotic bacteria. Since the people pay more and more attention on the healthcare function of food,indigestible dextrin will have a broad market prospect. To promote its sustainable and healthy development,the physical,chemical and structure property,research progress,physiological function,application field and market profile of indigestible dextrin were summarized and analyzed in this manuscript.
    11  Progress of New Food Drying Technology
    ZHANG Min Zhang Peng
    2006, 25(2).
    [Abstract](2439) [HTML](0) [PDF 256.89 K](8305)
    Abstract:
    The technological characteristics of various drying methods were formulated in this work.Meanwhile,this study introduced current research and application of various drying methods both inland and outland.Finally,the existing problems and application prosp
    12  Research Progress on the Physiological Activity and Application of Ferulic Acid and Its Derivatives
    LIANG Ying XI Xiaojuan LIU Qiaoli HUANG Ping LI Jiajia LIN Qinlu
    2018, 37(5):449-454. DOI: 10.3969/j.issn.1673-1689.2018.05.001
    [Abstract](2180) [HTML](0) [PDF 785.11 K](2709)
    Abstract:
    To get further understanding of ferulic acid and its derivatives and make them more widely used,this paper summarized extractions of ferulic acid and kinds of its derivatives,found ferulic acid not only existed in Angelica sinensis,Rhizoma Coptidis and other traditional Chinese medicine,but also was rich in rice bran,wheat bran and other food ingredients. Ferulic acid derivatives are also rich and varied. The paper also reviewed the ferulic acid and its derivatives have significant antioxidant,anti-inflammatory,anti-radiation,anticancer and other physiological functions,and they have been widely used in the food,cosmetic,pharmaceutical and other industries. The full text provided effective and solid theoretical foundations for widely and better application of ferulic acid and its derivatives and treatment of related disease,these substances have good development prospects.
    13  The Characterization of the Apple Polyphenoloxidase
    HAO Hui ying ZHAO Guang ao XU Yan LI Bin
    2003, 22(1).
    [Abstract](2156) [HTML](0) [PDF 131.12 K](7172)
    Abstract:
    苹果中的多酚氧化酶是引起苹果及苹果酒褐变的重要原因之一 ,用乳化剂及酚结合剂从苹果中提取多酚氧化酶 (PPO) ,研究其酶学性质 :不同底物的Km、Vm,反应的最适温度、pH及两种底物同时存在时的酶学效应 .结果表明 :4 甲基儿茶酚为最适底物 ,其最适温度 30℃ ,最适 pH4 .5 ,不同浓度咖啡酸对酶的影响不同 ,儿茶素对不同浓度绿原酸的酶促反应影响也不同 .研究几种效应物对酶活力的影响表明 :偏重亚硫酸钠、半胱氨酸、抗坏血酸为强烈抑制剂 ,羧酸类对酶具有抑制效应 ,肉桂酸比同一结构形式的苯甲酸抑制效果强
    14  Comparative Analysis on Domestic and International Microbiological Limits for Ready-to-Eat Foods
    LIU Fang LAN Quanxue LI Bifang YANG Wanying
    2017, 36(2):215-223. DOI: 10.3969/j.issn.1673-1689.2017.02.015
    [Abstract](1932) [HTML](0) [PDF 1.11 M](8409)
    Abstract:
    Based on the comparative analysis of microbiological criteria for ready-to-eat foods in Codex Alimentarius Commission,the European Union,Australia,New Zealand,England,Canada,America,Korea,Hong Kong and Macau,the article provided recommendations for the elaboration of Chinese national microbiological standards for ready-to-eat foods.
    15  Current Status and Future Trends of Food Additives Research in China
    ZHANG Hui JIA Jingdun WANG Wenyue CHEN Xiujuan WU Shijia WANG Hongxin WANG Jing
    2016, 35(3):225-233. DOI: 10.3969/j.issn.1673-1689.2016.03.001
    [Abstract](1922) [HTML](0) [PDF 1.34 M](1709)
    Abstract:
    Food additives industry plays an important role in the modern food industry as a pillar industry. The development of its research and application mark the status of the national food industry in the world. The widespread attention for food nutrition and safety has indicated that the establishment of a legitimate development and utilization for food additives is a global major issue. Unfortunately,the difference between "food additives" and "chemical additives" has not been well understood for a long period of time due to the incorrect information from the reported food safety incidents. A perceptive and comprehensive review on food additives research was present here summarizing the current status and future trends. Suggestive recommendations were also provided focusing on the key point and developmental direction. This review may guide the stable and healthy development of food additives industry,and catalyze the formation of industrial pattern of food nutrition and health. It may also improve the development of health care system on a national level and promote the construction of harmonious society.

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