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Articles 4861 - 4890 of 5782

Full-Text Articles in Food Science

Application Of Detection In Food Adulteration By Using Rapid Optical Analysis Technology, Wang Long, Zhu Rongguang, Dua Nhongwei, Xu Weidong Mar 2016

Application Of Detection In Food Adulteration By Using Rapid Optical Analysis Technology, Wang Long, Zhu Rongguang, Dua Nhongwei, Xu Weidong

Food and Machinery

The rapid optical analysis technology, which is a fast and nondestructive testing technology, has been widely used. This essay summarizes the application of Near infrared spectroscopy, Raman spectroscopy and Hyperspectral imagimg techniques in detecting adulterated food, including, but not limited to, dairy products, edible oil and meat. This review also proposes the existing technical problems in the present stage of optical fast analysis methods and looks forward into the future of the technology.

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Research Progress On Determination Of Total Polyphenols In Grape And Wine, Niu Xue, Zhang Junxiang, Xu Guoqian Mar 2016

Research Progress On Determination Of Total Polyphenols In Grape And Wine, Niu Xue, Zhang Junxiang, Xu Guoqian

Food and Machinery

Phenols are the main components of wine and important, and are the major function substance on health care. Thus, accurate determination of total content of phenolic compounds in wines has important effect on health care and wine quality judgment. The paper summarizes potassium permanganate method, Folin-Ciocalteu, Prussian Blue assay, vanillin-hydrochloric acid (sulfuric acid), high performance liquid chromatography, and protein precipitation assays, and compares and analyze advantages and disadvantages of above methods to provide a reference for the research of ways in screening and optimizing detection of total phenols contents of wines.

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Study On Screening Of High Lipase-Producing Strain And Conditions For Enzyme Production, Zhao Xingxiu, Zhao Changqing, He Yiguo, Zou Wei, Zhang Jing Mar 2016

Study On Screening Of High Lipase-Producing Strain And Conditions For Enzyme Production, Zhao Xingxiu, Zhao Changqing, He Yiguo, Zou Wei, Zhang Jing

Food and Machinery

16 samples were obtained from 8 sample points such as the soil of oil mill, restaurant, lampblack absorber. 9 strains were gotten by primary screening with bromocresol purple plate and secondary screening with shaking flask fermentation, and a strain, which producing lipase with 12.9 U/mL was determined original strain. By single factor and orthogonal experiment the optimum condition for high lipase-producing of the strain A7 was obtained, which was soybean oil 5 g/L, peptone 20 g/L, MgSO4·7H2O 0.4 g/L, pH 6.0, culture temperature 30 ℃, rotation speed 200 r/min. The enzyme activity of strain A7 was 19.8 U/mL under the …

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Effects Of Structural Parameters On Volume Flux And Correction Factor Of Jet Of Nozzles Used Lubricating Gears, Zhou Fang, Liu Shaojun, Zhang Ruiqiang, Lin Ling Mar 2016

Effects Of Structural Parameters On Volume Flux And Correction Factor Of Jet Of Nozzles Used Lubricating Gears, Zhou Fang, Liu Shaojun, Zhang Ruiqiang, Lin Ling

Food and Machinery

In order to study the effects of structural parameters on volume flux and correction factor of jet of nozzles used lubricating gears, single phase flow model of the jet flow field of three dimensional nozzles is simulated by employing the Large Eddy Simulation based on the FLUENT. The rationality of the simulation results of the single phase flow model of jet flow field of three dimensional nozzles were demonstrated by the volume flux of jet oil measured by the method of weighting jet oil. The results indicate that the volume flux of jet is influenced by the orifice diameter, the …

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Design And Analysis Of A New Automatic Vending Machine, Liu Haigang, Wang Gang, Gao Jianbiao Mar 2016

Design And Analysis Of A New Automatic Vending Machine, Liu Haigang, Wang Gang, Gao Jianbiao

Food and Machinery

A new automatic vending machine was designed. The principle of the selecting and pushing of vending machine was introduced, and the three dimensional model was established. The software ADAMS was used to carry out dynamic simulation and optimization analysis. The vending machine can transport the goods to outlet rapidly and steadily. When the pushing velocity was kept at the speed of 150 mm/s left and right, the goods have low wiggle and high stability, and it can provide the experimental basics for the practical design. In the case of equal occupancy area, comparing to the height of the market vending …

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Visual Design Of Three Dimensional Potato Vertical Peeling Machine Based On Solid Works, Miao Hongtao, Xia Jingjing Mar 2016

Visual Design Of Three Dimensional Potato Vertical Peeling Machine Based On Solid Works, Miao Hongtao, Xia Jingjing

Food and Machinery

With the times development, people pays more attention to the food processing industry. Analyzed the wording principles and efficiency of the formal potato peeling machine by Solid Works a three-dimensional simulation, and based on the formal pelling process, an new vertical peeling machine was designed which had a continuous potato peeling recycle system, including elaborated preparing，washing, peeling processing and unloading. It could greatly reduces the manual links, and improved the efficiency of potato peeling. The visual simulation of potato peeling was finished by Solid Works software.

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Effects Of Transport Vibration On Storage Quality Of Hami Melon, Zeng Yuanyuan, Wang Xichang, Zhou Ran, Song Zhewen, Xie Jing, Zhou Yan Mar 2016

Effects Of Transport Vibration On Storage Quality Of Hami Melon, Zeng Yuanyuan, Wang Xichang, Zhou Ran, Song Zhewen, Xie Jing, Zhou Yan

Food and Machinery

In order to study the effect of transport vibration on storage quality of Hami melons (Cucumis melo var. saccharinus), transport vibration of semi-trailer was simulated. The melons treated by transport vibration was compared with the untreated melons while melons were stored 28 d at room temperature (23 °C). The result showed that: when stored at 28 d, respiration rate of vibration-treated melons was higher than untreated, it was indicated that the transport vibration will accelerate respiration rate and after-ripening, accelerate aging, and the rate of decrease in hardness, speed up the generation of MDA and membrane lipid oxidation, thereby the …

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Extraction Of Artemisia Argyi Volatile Oil With Microwave-Assisted Enzyme Method, Yi Xuejing, Liu Gang, Gong Zhengwu Mar 2016

Extraction Of Artemisia Argyi Volatile Oil With Microwave-Assisted Enzyme Method, Yi Xuejing, Liu Gang, Gong Zhengwu

Food and Machinery

Microwave-assisted enzyme method was adopted to improve the extraction ratio of Artemisia argyi volatile oil, the effects of enzyme extraction time, temperature, and microwave power on the extraction ratio had discussed. The extraction process was optimized with orthogonal experiment, and the ingredient of Artemisia argyi volatile oil had analyzed. The results showed that the microwave-assisted process had the benefit to get a higher extraction ratio as 60 min enzyme extraction time, 45 ℃ enzyme extraction temperature, 10 min microwave processing time, 250 W microwave power, 0.9% cellulase dosage and pH 4.0 buffer solution. The average extraction ratio was 3.61% which …

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Infrared Heating Technology And Its Application In Food Sterilization, Wen Jiaxiong Mar 2016

Infrared Heating Technology And Its Application In Food Sterilization, Wen Jiaxiong

Food and Machinery

Infrared heating technology has been widely used in the food industry, which has a very important significance for food sterilization, improve quality and improve the health of food. Meanwhile introduces the working principle of infrared heating technology, the characteristic as well as the influence on the main components of food, and summarizes the application of infrared heating technology in food industry, with examples, of infrared heating technology in food sterilization and other areas of application and research progress of the analysis.

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Advances On Methods To Control Fungal Diseases Of Alternaria Spp In Postharvest, Huang Wei, Feng Zuoshan, Bai Yujia, Zhang Peiling, Zheng Feng Mar 2016

Advances On Methods To Control Fungal Diseases Of Alternaria Spp In Postharvest, Huang Wei, Feng Zuoshan, Bai Yujia, Zhang Peiling, Zheng Feng

Food and Machinery

Alternaria Spp is a fungi, which can cause a variety of postharvest fruit to disease and the serious loss in every year, so prevention and control of postharvest fruit diseases by Alternaria is particularly important and urgent for now. This article will especially introduce research on method against postharvest fruits Alternaria fungi disease including control at preharvest and post harvest of physical, chemical and biological methods, as well as their mutual combination in domestic and aboard. Then put forward that the combination of new and effective way should be taken to improve the control effect in the future, to enhance …

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Automatic Food Expiration Notification System, Nikolas-Viktor P. Doukas, Ozan Celebi, Lindsey E. Colgrove, Michael D. Werner, Tre Commings, Christopher M. Zatek, Daniel E. Odihi Mar 2016

Automatic Food Expiration Notification System, Nikolas-Viktor P. Doukas, Ozan Celebi, Lindsey E. Colgrove, Michael D. Werner, Tre Commings, Christopher M. Zatek, Daniel E. Odihi

Engagement & Service-Learning Summit

No abstract provided.

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Breadtalk: Managing An Expanding Brand Portfolio, Singapore Management University Mar 2016

Breadtalk: Managing An Expanding Brand Portfolio, Singapore Management University

Perspectives@SMU

The Singapore-based company has expanded into foodcourts and restaurants in 17 countries. How can it manage its burgeoning portfolio of brands?

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Research Progress On Detection Methods For Organophosphorus Pesticide In Fruits And Vegetables, Zhang Yajia, Li Zhonghai Feb 2016

Research Progress On Detection Methods For Organophosphorus Pesticide In Fruits And Vegetables, Zhang Yajia, Li Zhonghai

Food and Machinery

The organophosphorus pesticide is still widely used in agricultural production, organophosphorus pesticide and its metabolites have more severe toxic to the human body. This paper details the organophosphorus pesticide residues in fruits and vegetables analysis detection technology at home and abroad, and the prospect on the development of organophosphorus pesticide residue detection was discussed.

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Comprehensive Evaluation Of Safety And Supervision Path Of Genetically Modified Food, Zhang Zhenxia Feb 2016

Comprehensive Evaluation Of Safety And Supervision Path Of Genetically Modified Food, Zhang Zhenxia

Food and Machinery

The safety comprehensive evaluation of genetic modifying food needs for reliable systems for safety testing, traditional food safety regulatory model is no longer suitable for the nerves hazards of genetically modified foods, the real hazards of multiple hazards, the possibility of hazards supervision. Facing with the issue of genetic modifing listed facing China, the author analyzes the comprehensive evaluation of the current domestic situation and genetically modified food safety regulatory issues, and proposes the improving regulatory measures. It is designed to be more reasonable and more effective solution to the issue of genetically modified food regulatory reference.

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State, Problems And Ways Of China's Tourism Food Safety Supervision Mechanism, Tan Ye Feb 2016

State, Problems And Ways Of China's Tourism Food Safety Supervision Mechanism, Tan Ye

Food and Machinery

The development of China’s tourism food safety supervision mechanism nowadays presented some new characteristics: the supervision system gradually being perfect, co-operating with tourism and tourism product development and being more open. By analyzing related policy and cases, tourism food safety supervision mechanism also comes up some problems: unclear function, un-perfect legislation, poor safety education, industry self-regulation and social supervision. As a consequence, suggest constructing a comprehensive supervision system, improving laws and regulations construction and strengthening safety education to regulate their relationship, behaviors of food management, improve the level of supervision, deepen the strategy ‘rule of law’, promote steady development of …

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Research Development On Control Method In Cold Storage Refrigeration, Xu Minsheng, Xie Jing, Wang Jinfeng Feb 2016

Research Development On Control Method In Cold Storage Refrigeration, Xu Minsheng, Xie Jing, Wang Jinfeng

Food and Machinery

No abstract provided.

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Progress And Application On Mechanical Processing Techniques Of Sea Cucumber, Xu Wenqi, Shen Jian Feb 2016

Progress And Application On Mechanical Processing Techniques Of Sea Cucumber, Xu Wenqi, Shen Jian

Food and Machinery

Expounded the background of cleaning, evisceration and cooking of sea cucumber, introduced the current situation of sea cucumber on domestic and overseas, and analyzed their techniques contrastly. Mainly described technical capabilities of mechanical processing techniques and applications of sets of equipments in practice, for slide sieve, bubble cleaning, evisceration by mechanical stimulation, continuous cooking and extruding. At last the development orientation of applications in the enterprises was prospected.

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Advances Of Isolation And Purification Methods In Cereal Protein, Tang Wenjuan, Zhao Hongqing, Xu Zhou, Wen Li, Cheng Yunhui Feb 2016

Advances Of Isolation And Purification Methods In Cereal Protein, Tang Wenjuan, Zhao Hongqing, Xu Zhou, Wen Li, Cheng Yunhui

Food and Machinery

Cereal protein has been extremely difficult to purify and characterize owing to their heterogeneity, poor solubility and tendency to polymerize. In order to have a full understanding of structure and function in cereal protein, to realize the separation and purification of grain protein, the composition and characteristics of cereal proteins were introduced briefly, introduced the research progress comprehensive recitation on principle and model of the grain protein purification domestic and overseas in recent years. The future research prospects of cereal proteins were put forward as well.

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Research Progress Of Electrical Properties In Detection Of Food Materials Based On Parallel-Plate Measurements, Yang Na, Jin Yamei, Wu Haixiong, Ma Qian, Jin Zhengyu, Xu Xueming Feb 2016

Research Progress Of Electrical Properties In Detection Of Food Materials Based On Parallel-Plate Measurements, Yang Na, Jin Yamei, Wu Haixiong, Ma Qian, Jin Zhengyu, Xu Xueming

Food and Machinery

The parallel-plate electrode technique is widely used to evaluate physico-chemical properties of agricultural products because of its high precision, convenience and non-destructiveness. Electrical parameters, such as impedance Z, equivalent capacitance C, admittance Y, quality factors Q, phase angle θ and dielectric constant ε that are detected by this parallel-plate electrode technique can be used to evaluate a food material’s physico-chemical properties, physiological status and quality. Various factors can affect these electrical parameters. Some examples include the environmental factors of temperature and pressure; the measuring conditions of voltage and frequency; and the internal factors of water content, salt content, ripeness, freshness …

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Research Progress On Extraction Technology Of Camellia Oil, Yang Jianyuan, Chen Fang, Song Liwen, Hu Rong, Deng Zeyuan Feb 2016

Research Progress On Extraction Technology Of Camellia Oil, Yang Jianyuan, Chen Fang, Song Liwen, Hu Rong, Deng Zeyuan

Food and Machinery

Camellia oil is one of the four major woody vegetable oils in the world, which play important roles in prevent cardiovascular disease, anti-tumor, antibiosis, anti-inflammatory, hepatoprotection, antioxidant and immunomodulatory. With the rapid development of Camellia oleifera Abel plantation, an efficient camellia oil processing technology must be further improving. The latest research and application of extraction technology of camellia oil by press, solvent extraction, supercritical fluid extraction, aqueous extraction, aqueous enzymatic extraction, and their advantage and disadvantage was introduced in this article, which provided a reference for research a promising extraction technology of camellia oil due to nutrition, safety and economy.

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Research Progress In Physiological Health Functions Of Soybean Bioactive Peptides, Wang Libo, Chen Fusheng Feb 2016

Research Progress In Physiological Health Functions Of Soybean Bioactive Peptides, Wang Libo, Chen Fusheng

Food and Machinery

Soybean bioactive peptides, which is prepared from soy protein by hydrolysis and purification, is one kind of mixture of small molecular peptides, which composed of 3 to 6 amino acids and have excellent bioactivity. The physiological health functions of soybean bioactive peptides in antihypertensive, antioxidant, anticancer and hypolipidemic were also described. It provided a reference for the further study of soybean bioactive peptides as functional food additives.

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Research Progress Of Chitosan And Its Derivatives On Removal Of Heavy Metals From Shellfish, Li Ziqi, Meng Qian, Sun Fengqing, Wang Yingwen, Ding Meiyu, Qiu Yongmei, Xie Wancui Feb 2016

Research Progress Of Chitosan And Its Derivatives On Removal Of Heavy Metals From Shellfish, Li Ziqi, Meng Qian, Sun Fengqing, Wang Yingwen, Ding Meiyu, Qiu Yongmei, Xie Wancui

Food and Machinery

Recently, the problem of heavy metal pollution has attracted many attentions in global scale. The problem of heavy metal contamination in fresh and processing shellfish products is urgently to be solved due to their strong ability of heavy metal enrichment. As the only existing natural alkaline polysaccharide, chitosan has strong ability of heavy metal chelating. In this paper, the molecular structure characteristics and adsorbent mechanism of chitosan in absorbing and removing heavy metals are analyzed. The importance of biological adsorbent on the removal of heavy metals was discussed in this paper. It was investigated of chitosan on heavy metals removal …

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Studies On Purification And Properties Of Peroxidase In Lotus Sprout, Deng Bo, Deng Fangming Feb 2016

Studies On Purification And Properties Of Peroxidase In Lotus Sprout, Deng Bo, Deng Fangming

Food and Machinery

Study on peroxidase (POD) extraction and purification technology of lotus sprout, as well as temperature, pH value and part of the chemical's impact on POD enzyme activity. Peroxidase from the lotus root was purified using ammonium sulfate precipitation, DEAE-52 and G-75 column chromatography, SDS-PAGE analysis showed that the purified POD had a single polypeptide with a molecular weight is about 42 kD, the final purification fold and protein yield were 32.68 and 2.11%,respectively. The POD of the optimum temperature and pH were 40 ℃ and 5.0. At a temperature higher than 80 ℃and pH value of less than 2.0 and …

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A Performance Study Of Multilevel Physical Field On Pulsed Electric Fields, Yan Wenxu, Zhang Shanshan, Gong Qun Feb 2016

A Performance Study Of Multilevel Physical Field On Pulsed Electric Fields, Yan Wenxu, Zhang Shanshan, Gong Qun

Food and Machinery

Pulsed electric field sterilization technology is one of the main concerned non-thermal sterilization technologies. One of its key components is treatment chamber, when the food material went the treatment chamber, in a very short period of time microorganisms endured strong electric field force, the cell structure was destructed, so the cell died. The electric field strength and the temperature distribution in the treatment chamber is the main factor of affecting the system bactericidal effect and food quality, the numerical simulation of the uid dynamics coupled with the electric and thermal eld inside the treatment chamber can provide detailed analysis. The …

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Effects Of Different Methods On Determination Of Hyaluronic Acid In Fermentation Media, Zhao Xingxiu, He Yiguo, Zou Wei, Zhang Jing, Zhao Changqing Feb 2016

Effects Of Different Methods On Determination Of Hyaluronic Acid In Fermentation Media, Zhao Xingxiu, He Yiguo, Zou Wei, Zhang Jing, Zhao Changqing

Food and Machinery

According to the change of the hyaluric acid (HA) during fermentation process, the fermentation medium was diluted with different multiples. The hyaluric acid in the diluted fermentation medium was determined by different methods. The result showed that, the measurement of the Bitter-Muir way, the CTAB turbidity way and the CTAB way were influenced by the fermentation medium, in which the CTAB turbidity method was influenced significantly. Then the data were adjusted according to the influence, and the adjusted data could more really respond to the HA production.

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Dynamic Model And Virtual Prototype Simulation Of Tqlz Type Reciprocating Vibration Screen, Wang Zhongying, Ren Ning, Wu Wenbin, Li Yongxiang Feb 2016

Dynamic Model And Virtual Prototype Simulation Of Tqlz Type Reciprocating Vibration Screen, Wang Zhongying, Ren Ning, Wu Wenbin, Li Yongxiang

Food and Machinery

To predict vibration amplitude and trajectory of the TQLZ type reciprocating vibration screen. A dynamic model of the vibration screen was established, and the stiffness of the rubber springs was determined. A virtual prototype model of the vibration screen was established based on the rigid body dynamics analysis software ADAMS. By calculating the dynamic theory virtual prototype simulation, the amplitude and trajectory of the screen were gotten. The results showed that the theoretical calculation results of the centroid amplitude of the vibrating body were consistent with the results of the virtual prototype simulation. There was a certain angle between the …

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Optimization Design On Dynamic Load Sharing Property Of Planetary Gear Reducer, Wang Juan, Li Tongjie, Yao Zhihua, Yi Kechuan Feb 2016

Optimization Design On Dynamic Load Sharing Property Of Planetary Gear Reducer, Wang Juan, Li Tongjie, Yao Zhihua, Yi Kechuan

Food and Machinery

Dynamic load sharing property optimization of a 2K-H planetary gear reducer is carried out based on genetic algorithm and the bending torsional coupling model of the planetary gear train. Some design parameters which have significant influence on the load sharing property of the reducer are chosen by using the method of numerical calculation about the dynamic response. According to principle that parameter is easy to modify in actually engineering project, clearance of the external and internal gear pairs are selected as design variables from the above chosen parameters. According to the clearance region of a gear pair in actually engineering …

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Design Of Machine For Threshing And Peeling Wet Pepper, Shu Qi, Zhang Yan Feb 2016

Design Of Machine For Threshing And Peeling Wet Pepper, Shu Qi, Zhang Yan

Food and Machinery

Combined with the present status of the pepper processing in China, in order to reduce the labor intensity, and improve production efficiency and product quality, a kind of threshing and peeling wet pepper machinery was designed. There are five basic components of this machinery: threshing device, scratch device, microwave processing device, peeling device and screening device. The whole process uses the electric motor to provide the energy, which can reduce the noise effectively. And through simulation experiments, it is concluded that the device can effectively thresh and peel wet pepper, and work efficiency can reach up to 100 kg/h. The …

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Research Of Inhibitors On Enzymatic Browning Of Cloudy Pear Juice, Chang Dawei, Wei Songsong, Liu Shuxing, Luo Cangxue Feb 2016

Research Of Inhibitors On Enzymatic Browning Of Cloudy Pear Juice, Chang Dawei, Wei Songsong, Liu Shuxing, Luo Cangxue

Food and Machinery

The enzymatic browning of pear juice was one of the major technical challenges during storage and processing. It reduced the value of pear juice such as the appearance, flavor and other quality. In this paper, crisp pear was selected as material. The inhibitory effects of enzymatic browning by browning inhibitors including ascorbic acid, calcium chloride, citric acid, β-cyclodextrin, EDTA and their combination were studied. The results showed that the order of the intensity of inhibition on the relative enzyme activity of polyphenol oxidase was ascorbic acid> calcium> citric acid> β-cyclodextrin> EDTA within the range of concentrations selected. And there was …

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Research Progress On Bioactive Peptides In Sesame, Sui Xiao, Du Guicai, Zhao Aiyun, Dou Lixue Feb 2016

Research Progress On Bioactive Peptides In Sesame, Sui Xiao, Du Guicai, Zhao Aiyun, Dou Lixue

Food and Machinery

Sesame( Sesamum indicum L.）is a widely grown oilseed crops. Sesame meal is a by-product of oil industry. Sesame meal contains plentiful protein which is a good source of sesame bioactive peptides. The current work reviewed the preparation, purification, structure and biological activity of sesame bioactive peptides and discussed its further research development, aimed to provide the references for the related research.

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