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Articles 4471 - 4500 of 4798
Full-Text Articles in Food Biotechnology
Optimization On Culture Medium For Laccase Production From Coriolus Hirsutus By Residues Of Traditional Chinese Medicine, Yue Kun, Pan Zhiheng, Sun Yongmin
Optimization On Culture Medium For Laccase Production From Coriolus Hirsutus By Residues Of Traditional Chinese Medicine, Yue Kun, Pan Zhiheng, Sun Yongmin
Food and Machinery
In order to make full use of residue from traditional Chinese medicine, the different kinds of residues of traditional Chinese Medicine for laccase production by Coriolus hirsutus were investigated. It is capable of producing laccase with the three kinds of residues of traditional Chinese Medicine. The result showed that the optimal medium composition was as follows: wheat bran 3%, peptone 02%, residues of Chinese rhubarb 12%, MgSO4 3 g/L，KH2PO4 3 g/L, pH value 5.0. Enzyme activity under the optimal culture conditions was 4 828.2 U/mL, which was 1.4 fold of that of the original medium.
Development Of A Loop-Mediated Isothermal Amplification Assay For Visual Detection Of Staphylococcus Aureus, Song Taoping, Qiu Huali, Wang Shujuan, Peng Xinkai, Yang Lixia
Development Of A Loop-Mediated Isothermal Amplification Assay For Visual Detection Of Staphylococcus Aureus, Song Taoping, Qiu Huali, Wang Shujuan, Peng Xinkai, Yang Lixia
Food and Machinery
To develop a loop-mediated isothermal amplification (LAMP) assay for visual detecting Staphylococcus aureus, 2 sets of specific primers were designed and 6 primers targeting the nuc gene was selected. The method could detect Staphylococcus aureus within 45 min at a constant temperature of 63 ℃. The sensitivity of the method was 1 pg/μL, and had no cross reaction with other pathogens. The result indicated that the LAMP assay was a rapid, specific and simple tool for field diagnosis of Staphylococcus aureus.
Research On Degenerate Primers For Detection Of Staphylococcus Aureus Enterotoxin A, B Gene, Liu Jichao, Chen Bairu, Jiang Tiemin, Chen Lijun
Research On Degenerate Primers For Detection Of Staphylococcus Aureus Enterotoxin A, B Gene, Liu Jichao, Chen Bairu, Jiang Tiemin, Chen Lijun
Food and Machinery
The degenerate primers were designed to establish a PCR assay for synchronous and fast detection of staphylococcal enterotoxin A and B. According to the sequences of SEA and SEB gene, primers were designed and used for PCR. The lengths of the amplified primers were 105 bp and 135 bp. To evaluate the specificity of PCR assay, 2 strains of SEA, SEB and 4 strains of non-SEA-B were tested by PCR. SEB was 10-fold serially diluted and amplified by PCR to verify its sensitivity. The results showed that the detection of Staphylococcus aureus enterotoxin A, B strain DNA results were positive …
Determination Of Mercury Content In The Food Paper-Plastic Composite Packaging Materials, Peng Xianglian, Fu Hongjun
Determination Of Mercury Content In The Food Paper-Plastic Composite Packaging Materials, Peng Xianglian, Fu Hongjun
Food and Machinery
A method for determining mercury content in the food paper-plastic composite packaging materials with wet digestion-atomic fluorescence spectrometry was developed. The sample of 0.500 0 g with 10 mL of concentrated nitric acid and 2 mL of hydrogen peroxide digestion 4 h could get the best results. The best optimized atomic fluorescence spectrometer detection conditions of mercury were as followed: a negative high voltage of 210 V, the shielding gas flow rate of 900 mL/min, the carrier gas flow rate of 500 mL/min, injection volume of 0.5 mL, the Hg lamp current of 10 mA, the atomizer height of 10 …
Detection Of Methimazole Residue In Animal-Derived Foods By Combining Solid-Phase Extraction With High Performance Liquid Chromatography, Chi Yonghong, Yun Yaguang
Detection Of Methimazole Residue In Animal-Derived Foods By Combining Solid-Phase Extraction With High Performance Liquid Chromatography, Chi Yonghong, Yun Yaguang
Food and Machinery
The residue of antithyroid drug - methimazole in animal-derived food products was studied. The complex matrix of food products was purified by using Cleanert S C18 solid-phase extraction column and the experimental parameters including the loading solvent, washing solution and the eluent were optimized in detail. The method for the accurate and sensitive detection of trace methimazole in pig kidney, liver and muscle samples was successfully developed by combining solid-phase extraction with high performance liquid chromatography. Under the optimized experimental conditions, good recoveries (>85%) were obtained at three spiked concentrations in chosen animal-derived samples with RSD less than …
Determination Of Vitamin C In Red Globe Grape Based On Visible/Near-Infrared Diffuse Reflectance Spectroscopy, Chen Chen, Lu Xiaoxiang, Zhang Peng, Chen Shaohui, Li Jiangkuo
Determination Of Vitamin C In Red Globe Grape Based On Visible/Near-Infrared Diffuse Reflectance Spectroscopy, Chen Chen, Lu Xiaoxiang, Zhang Peng, Chen Shaohui, Li Jiangkuo
Food and Machinery
For establishing the determination model of vitamin C content of Red Globe Grape using visible / near infrared diffuse reflectance spectroscopy, and evaluating its application value, effects on scaling model results of different chemometry modeling methods, different spectra pretreatment methods and different effective wavelength intervals were discussed, and the samples in prediction set were used to verified the accuracy of the optimal model. The results showed that in the whole spectral range, application of modified partial least squares (MPLS) combined with first derivative, 5 points smoothing, weighted multivariate discrete correction (WMSC) could obtain the optimal calibration models, the cross validation …
Sampling Methods And Application Research On Rapid Measuring Instrument Of Tobacco Widthbased On Scanning Imaging, Liu Yang, Liu Minchang, Wen Ruoyu, Zhao Weiyi, Zeng Jian, Zhou Xuezheng
Sampling Methods And Application Research On Rapid Measuring Instrument Of Tobacco Widthbased On Scanning Imaging, Liu Yang, Liu Minchang, Wen Ruoyu, Zhao Weiyi, Zeng Jian, Zhou Xuezheng
Food and Machinery
The width of cut tobacco is an important index to evaluate sensory qualities and physical indices of tobacco products. The rapid measuring instrument of cut tobacco showshigh efficiency and accuracy. This study based on a kind of cut tobacco set up the sampling methods about the rapid measuring instrument. Meanwhile, tobacco width measuring methods by using this instrument and using the plastic rod are contrasted. Moreover, this paper had done some work of application about different tobacco cuts including conditional tobacco, expanded tobacco and tobacco flake and different types of tobacco cutters. The results show that the rapid measuring instrument …
Research On Application Of Cognitive Radio Wireless Sensor Networks In Food Production, Bao Yafu, Zhang Shuang, Sun Hui
Research On Application Of Cognitive Radio Wireless Sensor Networks In Food Production, Bao Yafu, Zhang Shuang, Sun Hui
Food and Machinery
Wireless sensor networks are facilitated in detecting food security and production. The key of this system is to capture the information from sensors without error. The idea of Cognitive Radio network (CRN) is used to eliminate signal interference and channel jamming in wireless sensor networks based on RFID and simulation results in Matlab shows that the modeling and analysis are valid.
Construction Of Consumer Safety Food Trust Evaluation Mechanism Under Information Exchange, Wang Zhenduo
Construction Of Consumer Safety Food Trust Evaluation Mechanism Under Information Exchange, Wang Zhenduo
Food and Machinery
One of the important reasons for the consumer's degree of trust is not high, is that consumers are hard to obtain the information generated by the corresponding safety food certification information asymmetry. This kind of information asymmetry arises because the cognitive ability to consumer overvalued, certification bodies lack of credibility, administrative organs of local protectionism, and the media reported that the distortion and food enterprise and consumer communication channels of the building neglect problem on existence. Therefore, must be taken to strengthen the publicity and education of consumers, strengthen the management and supervision of certification bodies to the establishment of …
Analysis On Mechanical Properties Of Green Walnut Based On Workbench, Zheng Jiahong, Wu Dongze, Liang Jinsheng, Niu Shuoya
Analysis On Mechanical Properties Of Green Walnut Based On Workbench, Zheng Jiahong, Wu Dongze, Liang Jinsheng, Niu Shuoya
Food and Machinery
According to the characteristics of the stress in the process of the peeling of walnut, analyzed the static characteristics of the walnut and create a geometrical model of the green walnut. By the pressure text of the green walnut under different loading direction, simulated the mechanical characteristics at the same time by using workbench. Then, by comparing the pressure test and the simulation results, two results were obtained, which proves the feasibility of the simulation analysis. In addition, the establishment of mechanical model can be also used to analyze the walnut green damage theory during the peeling process, which provided …
Analysis And Calculation Method Of Potato Sorting Conveyor Line Statics, Sun Jun, Yu Wenqiang, Li Xueqiang, Shi Yuanyuan, Yu Mingzhi
Analysis And Calculation Method Of Potato Sorting Conveyor Line Statics, Sun Jun, Yu Wenqiang, Li Xueqiang, Shi Yuanyuan, Yu Mingzhi
Food and Machinery
The operation, of sorting and the arrival of potatoes, is still on low mechanization degree and involves heavy laboring intensity. however, there is little research on optimizing the devices of conveyor line interiorly. Based on a reference to some foreign research results about the conveyor line with the function of sorting potatoes by sizes, this article present proper design parameters adjusted to the properties sorting and warehouse management of potatoes in domestic situation by simulating and optimizing design. It offers the reference data for the design and manufacture of domestic device for sorting and conveying the potatoes. It also helps …
Dynamics Simulation Of Food Sorting Robot, Jiang Yi, Li Zhengyang, Ying Zaien, Ping Xueliang
Dynamics Simulation Of Food Sorting Robot, Jiang Yi, Li Zhengyang, Ying Zaien, Ping Xueliang
Food and Machinery
According to the structural features of food sorting robots with six degrees of freedom, kinetic theory analysis was carried out by using Lagrange approach. Virtual prototype modeling was established, and the curves of angle, angular velocity, angular acceleration, moment and power were obtained by rigid body dynamics simulation within ADAMS. The results showed that the robot had a good motion stability and dynamic response, which in addition provide a theoretical basis for motor selection. Coupled dynamics simulation was also carried out by SimDesigner, which demonstrates the rationality of the manipulate design.
Motion Simulation Analysis Of Yield Monitor Device On Tomato Harvester Based On Solidworks Motion, Yuan Changfu, Zhang Hongwen, Ma Wanli, Wang Lei, Chen Mingchang
Motion Simulation Analysis Of Yield Monitor Device On Tomato Harvester Based On Solidworks Motion, Yuan Changfu, Zhang Hongwen, Ma Wanli, Wang Lei, Chen Mingchang
Food and Machinery
In order to study the influence of the initial velocity of tomato on weighing accuracy of yield monitor, a motion simulation model of yield monitor on tomato harvester was established. The tomato on the harvester was chosen for the research object. The analysis of motion process was completed by applying a method combined the motion theoretical analysis and motion simulation analysis. The results showed that in order to avoid the accuracy of the motion symmetry of tomato, tomato in the range of the load belt before entering the weighing belt is relatively static, and the initial movement speed of tomato …
Simulation And Optimization Of Spray In Eggs Cleaning System, Chen Yonggang, Yan Qiusheng
Simulation And Optimization Of Spray In Eggs Cleaning System, Chen Yonggang, Yan Qiusheng
Food and Machinery
No abstract provided.
Simulation Analysis On A Stuffing Machine Molding Cutter Based On Solidworks, Xu Huajun, Tang Ping
Simulation Analysis On A Stuffing Machine Molding Cutter Based On Solidworks, Xu Huajun, Tang Ping
Food and Machinery
No abstract provided.
Preparation And Experimental Study On Online Removing Inpurities And Sorting Device In Tomato Sauce Factory, Liu Zhiyong, Yang Jiapeng, Liu Junxia, Wang Xiaohui, Liu Wen, Yuan Yong, Sun Tianlong, Ha Iling
Preparation And Experimental Study On Online Removing Inpurities And Sorting Device In Tomato Sauce Factory, Liu Zhiyong, Yang Jiapeng, Liu Junxia, Wang Xiaohui, Liu Wen, Yuan Yong, Sun Tianlong, Ha Iling
Food and Machinery
Tomato sauce factory impurities removing mainly rely on a large number of manpower. It is not only time wasting, low collecting effect, and the food hygiene is also difficult to secure. The study developed an automatical removing impurity sorting device which can alternative artificial clean up the weeds and impurity. The device was composed of the bracket, roller, non-slip pattern conveyor belt, side baffle, baffle plate, motor, reducer, photoelectric sensor and automatic control system. The experimental analysis demonstrated that when removing impurity sorting machine working angle between 25° to 45°, the device selected fruit rate and the rate of removing …
An Apple Quality Grading System Based On Motion Controller, Wu Xiaoqiang, Huang Yunzhan, Zhao Yongjie
An Apple Quality Grading System Based On Motion Controller, Wu Xiaoqiang, Huang Yunzhan, Zhao Yongjie
Food and Machinery
A kind of apple quality grading system is designed based on motion controller and machine vision system, the system includes the detection module, image acquisition and processing module motion control module and execution module and other components. The operation is simple and accuracy is high, and it can realize the automation of apple quality grading, improve the labor efficiency. The non-contact structure is applied, the structure can overcome the previous mechanical damage caused by the contact of apple. It can ensure the quality after the apple classification. Research shows that this system is high reliability, good openness, grading error less …
Design Of Temperature Remote Monitoring System For Beer Pasteurization Machine Based On Gsm, Zhao Fang, Zheng Xiaoxi, Qi Zegang
Design Of Temperature Remote Monitoring System For Beer Pasteurization Machine Based On Gsm, Zhao Fang, Zheng Xiaoxi, Qi Zegang
Food and Machinery
The key factor which affects the taste and quality of beer is beer pasteurization machine spray water temperature. The system, which is used to beer pasteurization machine temperature’s automatic control and remote monitoring, is deigned based on MSP430 and GSM wireless communications. The temperature detection adopts DS18B20 digital temperature sensor instead of the traditional platinum RTD, and the MSP430 is main controller with low-power and strong anti-interference ability. The control system can adjust each zone temperature of pasteurization machine in real-time, and the real-time temperature of each zone and abnormal temperature alarm information can be send to the monitoring center …
Design Of A Pitting And Slicing Device For Jujube, Wen Huaixing, Zhou Gaimei, Shi Pengtao
Design Of A Pitting And Slicing Device For Jujube, Wen Huaixing, Zhou Gaimei, Shi Pengtao
Food and Machinery
A kind of pitting and slicing integrated device was designed. The material feeding was completed by material panel, hairbrush, slider-crank mechanism; The positioning clamp for jujube was accomplished by a flexible device connected with spring; The pitting can achieved by trough type cam mechanism and slider-crank mechanism; Use the Geneva mechanism to finish the intermittent feeding and intermittent rotating of pitting panel and slicing panel; The slicing was fulfilled by the fixed blade and rotated slicing panel. The results show that the device can meet the requirements of deep processing for jujube, its broken rate was lower than 5%.
Development Of Green Walnut Peeling Machine Block, Wu Dongze, Zheng Jiahong, Liang Jinsheng, Niu Shuoya
Development Of Green Walnut Peeling Machine Block, Wu Dongze, Zheng Jiahong, Liang Jinsheng, Niu Shuoya
Food and Machinery
Combined with the green walnut peel machine exist peeling the peel into a drip shape, design a kind of economical and practical green walnut peel block machine on the study of green walnut peel principle, which has carried on the design of cylinder, peeling mechanism. The structure of the machine is simple, convenient, economic, and safety. The efficiency of green walnut peel is about 98.33%，and the damage rate is 2%. It reduces the machine corrosion by the green peel juice from the peeling process and environmental pollution, which has a very good development prospect.
Design And Research On Compliant Manipulator For Shrimps Head Cutting, Han Cui, Zhang Xiuhua, Li Na, Wang Zehe, Yi Jinggang
Design And Research On Compliant Manipulator For Shrimps Head Cutting, Han Cui, Zhang Xiuhua, Li Na, Wang Zehe, Yi Jinggang
Food and Machinery
Designed a compliant manipulator device to cut shrimp head, and used the flexible deformation materials to complete the trajectory. It is proved the best by experiments that the knife went along the trajectory from the back force of shrimp to head. Not only can achieve the best results, but also gains access to a higher headless shrimp yield and good sensory quality. Three dimensional modeling was conducted by using Solidworks software, and the motion simulation by ADAMS software， Through the manufacture and experiments of the compliant manipulator, the headless shrimp yield was improved to 70.78%. The device was simple and …
A 3d-Print Pen Based On Principles Of PistonS Continuous Working, Wang Jinlei, Wang Xiaojun, Ren Yantao
A 3d-Print Pen Based On Principles Of PistonS Continuous Working, Wang Jinlei, Wang Xiaojun, Ren Yantao
Food and Machinery
Introduced the structural characteristics of a 3D-print pen based on the principles of Pistons continuous working ,and then established the mathematical model of the system. Compared with the other 3D-print pen, its print materials changed into liquid material ,such as liquid chocolate, from ABS plastic. The 3D-print pen had the advantages of reasonable design, convenient operation, and extended print material range. These were benefit for development and design of the other 3D-print pen.
Design And Study On Dough Wobble-Plate Machine, Hao Yongxing, Zhang Minghui, Ma Ziling, Ma Shaodan
Design And Study On Dough Wobble-Plate Machine, Hao Yongxing, Zhang Minghui, Ma Ziling, Ma Shaodan
Food and Machinery
A wobble-plate machine of dough that base on existed normal machine is developed to satisfy many requirements including safety and hygiene, efficiency and lower cost in production line of steamed bread. Design scheme of the whole machine is made according to the working environment , and a 3D model is built based on Pro/E. This machine consists of manipulator which can complete grasp, separate, place and press, frame and driving cylinder etc. According to its basic construction and working principles, driving plan is designed, flow chart and pneumatic system schematic can also be shown. The virtual simulation experiment in ADAMS …
Study On A Device For Recycling Of Canteen Dishware, Xiao Bing, Zou Guangming, Zhang Xinfeng, Yang Xing, Cao Kang
Study On A Device For Recycling Of Canteen Dishware, Xiao Bing, Zou Guangming, Zhang Xinfeng, Yang Xing, Cao Kang
Food and Machinery
A device for the recycling of canteen dishware is developed. The device consists of a mechanical system and a control system. The mechanical system includes three parts: a conveyor for dishware, a rotating electromagnetic manipulator and a processor. Wherein, the conveyor for dishware is used as a substitute for cutlery collecting vehicle and transmits dishware to the processor; the rotating electromagnetic manipulator achieves to transfer dishware from the conveyor for dishware to the processor, and meanwhile pours the residue in dishware; lastly the processor classifies and collects dishware. The entire device achieves to replace the human collecting, a cleaning and …
Optimization And Improvement Of Humidition Of Tobacco System, Su Fubin, Zhang Wei
Optimization And Improvement Of Humidition Of Tobacco System, Su Fubin, Zhang Wei
Food and Machinery
In order to solve the problem of high tobacco temperature upstream cylinder and irrational design of deflector, which caused much tobacco break, tobacco stick and wet tobacco mass, the Humidition of Tobacco is optimized and improved by adding a low pressure blower for cooling belt, and improving cylinder deflector.The results of application showed that the tobacco temperature upstream cylinder could be fallen from 65 ℃ to 40 ℃ with blower, 590 full pressure, work at 15 Hz, and the tobacco break is little, tobacco stick and wet tobacco mass were also descend. The transformations reach the goal of improving product …
Application Of Reverse Engineering Technology In Food Machine, Li Fenxia, Yang Jieming
Application Of Reverse Engineering Technology In Food Machine, Li Fenxia, Yang Jieming
Food and Machinery
In the CAM guide development process of automatic wonton machine, presents a new method of digital design and manufacturing of complex parts based on reverse engineering. The reverse engineering technology was used to realize the product development by the study of product data acquisition, the point cloud processing, surface fitting, surface parameterization modeling, digital manufacturing stages. Established the strategy of data acquisition, put forward the different method of point cloud processing, designed the scheme of surface parameterization modeling, and inspected surface quality and manufacturing process using modern means. Solved the time-consuming traditional top-down design, test difficulty and high cost, and …
Design Of Processing Docking Platform Of Food Machine Based On Three Dimensional Image Calibration, Fu Wen, Li Xiang
Design Of Processing Docking Platform Of Food Machine Based On Three Dimensional Image Calibration, Fu Wen, Li Xiang
Food and Machinery
Docking process occurs in food machinery processing, the accuracy of the docking process can directly affect the later process successfully. In order to solve the problem of low docking accuracy which depends only on the signal sensors, the design method of processing docking platform based on three dimensional image is afforded, by analyzing the influence of three-dimensional image mechanical calibration principle of docking process, and acquiring the feature points in the optimal docking area of a large number of the three dimensional docking images which can be chosen based on local brightness, ratio of contrast, information of structure, the three …
Effects Of Grating Moire Fringe On Food Packaging Printing, Zheng Li
Effects Of Grating Moire Fringe On Food Packaging Printing, Zheng Li
Food and Machinery
Combined with grating in food packaging materials, optical properties and the halftone image and network technology, studied the anti-counterfeiting grating moire fringe of printing forming rules. Explored the new technology of food packaging, and adopt the method of theoretical calculation of moire fringe formation and distribution characteristics. And the analysis and calculation are verified by experiments. According to the actual situation of food packaging grating printing, and the laws of the moire fringe formation, the results showes that choosing suitable grating and screen printing and network Angle/grating line ratio, can effectively eliminate or weaken the influence of the moire fringe.
Preparation And Research On Microwave Modified Blended Protein Film, Wang Na, Gao Yuzhe, Wang Qingfeng, Xiao Zhigang, Wang Peng, Li Zhe
Preparation And Research On Microwave Modified Blended Protein Film, Wang Na, Gao Yuzhe, Wang Qingfeng, Xiao Zhigang, Wang Peng, Li Zhe
Food and Machinery
With the soy protein isolated(SPI) and zein as the raw material, through modified the zein by microwave to make the microwave modified blended protein film. Selecting the protein liquid volume ratio of SPI and modified zein, ethanol content, pH of film-forming liquid and water bath temperature as studying factors, the mechanical properties of blended film (breaking strength and fracturing distance) as targets for single factor experiment was studied. And the microstructure, thermal characteristics and FT—IR of the microwave modified blended protein film were also studied, which was obtained by the best ultrasonic film-forming conditions. The results showed that the blended …
Changes Of Rice Bran Glutelin Functional Properties Caused By Rancidity During Storage, Wu Wei, Ye Jianfen, Cai Yongjian, Lin Qinlu
Changes Of Rice Bran Glutelin Functional Properties Caused By Rancidity During Storage, Wu Wei, Ye Jianfen, Cai Yongjian, Lin Qinlu
Food and Machinery
Fresh rice bran which stored in a condition of 25 ℃ and 85% of relative humidity for different period were used to prepare different rancid extent of rice bran. Rice bran glutelin were prepared after defatting of rice bran, and effects of rice bran rancidity on the functional properties of rice bran glutelin were investigated. The results indicated that rice bran glutelin carbonyl content increased as storage time increased, which indicated that storage of rice bran lead to oxidation of rice bran glutelin. Solubility of rice bran glutelin decreased by 40% as storage time increased. As storage time increased, water …