Comparison Of Determination Method For Histamine Content In Fermented Meat Products,
2015
Meat-processing Key Laboratory of Sichuan, Faculty of Biotechnology Industry, Chengdu University, Chengdu, Sichuan 610106, China
Comparison Of Determination Method For Histamine Content In Fermented Meat Products, Wang Xinhui, Bai Ting, Li Junxia, Luo Jing
Food and Machinery
In order to build a suitable method for determination of histamine content in fermented meat products, liquid chromatography (HPLC) method, the national standard method and the improved national standard method were used to determine histamine content in fermented meat products. It was shown that the standard curve of the three methods showed a good linear relationship. HPLC method presented the highest precision with a good relative standard deviation (RSD < 1%), while the national standard method exhibited the worst precision and the relative standard deviation was close to 5%. The range of recovery rate of both HPLC method and the improved national standard method were higher than 90% and were better than that of the national standard method. The results revealed that HPLC method and the improved national standard method could meet the determination of histamine content in fermented meat products experimental requirements.
Determination Of Nitrite In Food Using Pt—Fe(Iii)/Mwcnts Modified Electrodes By Voltammetry Measurement,
2015
Department of Environmental and Chemical Engineering, Tangshan College, Tangshan, Hebei 063000, China
Determination Of Nitrite In Food Using Pt—Fe(Iii)/Mwcnts Modified Electrodes By Voltammetry Measurement, Hao Yucui
Food and Machinery
The platinum particles-Fe(III) and multi-walled carbon nanotubes (MWCNTs) modified glassy carbon electrodes(Pt—Fe(Ⅲ)/MWCNTs/GCE) were prepared by drop coating and electrochemical deposition. The electrocatalytic property of Pt—Fe(Ⅲ)/MWCNTs/GCE on NO2- were studied, the experimental conditions were optimized and a differential pulse voltammetric method for determining NO2- was established．The oxidation peak current of NO2- is proportional to the concentration of NO2- over the range of 3.0×10-7～2.0×10-3 mol/L with the detection limit of 1.0×10-7 mol/L (r = 0.999 3). The method was applied to the determination of NO2- in food, and …
Determination Of Amylose And Amylopectin In Mung Bean By Dual-Wavelength Spectrophotometry,
2015
School of Food Science, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, China
Determination Of Amylose And Amylopectin In Mung Bean By Dual-Wavelength Spectrophotometry, Huang Jianrong, Wang Zhijiang, Li Lichang, Oul I, Xu Jinrui
Food and Machinery
A method for the determination of amylose and amylopectin content in mung bean was established based on dual-wavelength spectrophotometry. The factors influencing the photometric absorption were also investigated. The precision of the method and the recovery of standard addition were investigated as well. The determination and reference wavelength of amylose were 610 nm and 498 nm, respectively, and that of amylopectin were 553 nm and 709 nm, respectively. The precision of the method was appropriate. The average recovery of amylose and amylopectin were 94.10% and 90.94%, respectively. The regression equation was established to calculate the amylose and amylopectin content in …
Detection And Classification Of Chinese Rice Wine With Different Wine Age By Znose,
2015
School of Mechanical Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
Detection And Classification Of Chinese Rice Wine With Different Wine Age By Znose, Zhang Zhen, Li Zhenfeng, Song Feihu, Li Jing, Xu Wanxiu
Food and Machinery
Wine age is one of the main indicators of Chinese rice wine in quality. There are many limits in time and place about chromatograph and spectrograph. Surface Acoustic Wave zNose can distinguish Chinese rice wine of different wine age real time, on-the-spot and on-line monitoring. GuYueLongShan Chinese rice wines which belong to different category were sampled. Data were analyzed by principal component analysis and discriminant function analysis, where 100% classification was achieved. The correlation coefficient of characteristic peak aera and regression equation were better, which were 0.990 2, 0.994 3, 0.987 6 respectively. The linear regression model could also distinguish …
Flow Characteristics Analysis And Fluid Distribution Simulation For Ion Exchange Column Using Cfd Method,
2015
Institute of Mechanical & Electrical Technology, Taizhou Vocational & Technical College, Taizhou, Zhejiang 318000, China
Flow Characteristics Analysis And Fluid Distribution Simulation For Ion Exchange Column Using Cfd Method, Lin Haibo, Pan Wangui, Wang Weiping, Ding Li, Yang Jian
Food and Machinery
Based on the numerical simulation method on computational fluid dynamics (Computational fluid dynamics, CFD), and using anion exchange resin (717) as internal chromatography media, the fluid distribution and flow resistance characteristics in ion exchange column were studied respectively. For the convenience of simulation, water was selected as feed liquid, at the flow rate of 3 m3/h, appeared laminar flow state in the exchange column. On the assumption that the fluid uniform premise, the flow resistance characteristics for the column ion exchange resin filler was simulated by the two-dimensional porous media model, and the effects of the exchange column of fluid …
Research And Simulation On Drive System Of Cam Indexers Revolving Distiller’S Yeast Press Machine,
2015
Institute of Mechanical Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China; Shanxi Province Research Center for Mine Fluid Control, Taiyuan, Shanxi 030024, China
Research And Simulation On Drive System Of Cam Indexers Revolving Distiller’S Yeast Press Machine, Wei Jin, Qin Yu, Shao Liangfeng
Food and Machinery
Used the globoid indexing cam replace hydraulic motor and disc spring to control machine turntable. Determined the parameters of two levels of driving gear, and figured out resisting moment computation formula. Used Pro/E to build models and assemble, added the corresponding constraints during in Adams importing, then made a kinematics simulation. The results showed that turntable, under the globoid indexing cam controlled, can make the transmission and position integration, and the positioning error under the bounds of allowed. This paper demonstrates the feasibility of using globoid indexing cam to replace hydraulic motor control turntable, provide theoretical basis for the improvement …
Simulation And Optimization On Coaxial Treatment Chamber For Pulsed Electric Field,
2015
School of Mechanical Engineering, Jiangnan University, Wuxi, Jiangnan 214122, China
Simulation And Optimization On Coaxial Treatment Chamber For Pulsed Electric Field, Yao Wenlong, Ping Xueliang, Hu Dahua, Jiang Yi
Food and Machinery
PEF sterilization technology is a novel non-thermal sterilization technique, the processing chamber is applied directly, for loading the material to be processed in a processing chamber and pulsed electric field. A paper designed pilot scale electrode spacing is adjustable, replaceable processing chamber cavity coaxially novel process chamber, the system established by pulsed electric fields coupled three COMSOL software mathematical model of the electric field intensity of the processing chamber, the material flow characteristics and temperature distribution, provide the basis for structural optimization coaxial treatment chamber. Simulation results show that non-uniform electric field strength at the edge of the inner circle …
Cfd Simulation Of Airflow Distribution With Different Inlets In Evaporative Condenser,
2015
Shanghai Engineering Research Center of Aquatic Product Processing & Preservation, Shanghai 201306, China; College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
Cfd Simulation Of Airflow Distribution With Different Inlets In Evaporative Condenser, Zhu Jinlin, Xie Jing, Wang Jinfeng, Du Zizheng, Zhou Hongjian
Food and Machinery
The variation of the internal temperature field and airflow field in the evaporative condenser was discussed when it was worked under an unsteady state numerical simulation by using CFD software. The performance of internal temperature field and airflow field was analyzed when the condenser worked within 5 s with different air inlet direction (single inlet, double inlets, and three inlets). The simulation results showed that when the condenser worked with single inlet, the cold airflow was easily infiltrated the bottom of the condenser horizontally, then rose and got heat exchange with coils under the effect of density difference. The condenser …
Ansys-Based Vibration Characteristic Analysis On Rotor System Of Film Dryer,
2015
College of Mechanical and Power Engineering, Nanjing University of Technology, Nanjing, Jiangsu 211816, China
Ansys-Based Vibration Characteristic Analysis On Rotor System Of Film Dryer, Li Naiyu, Li Qingsheng, Chen Guangyu
Food and Machinery
The modal analysis was carried out based on the 3D solid model of the A=0.4 m2 film dryer rotor by the ANSYS software, the first four orders of system inherent frequencies and vibration forms were initially attained, the critical speeds of main shaft were calculated; The harmonic response analysis was carried out based on the modal analysis of the rotor by the Full method, the influence of the eccentricity(c=2.5 mm) and the unbalance mass (m=0.1, 0.2 kg) on the rotor vibration were analyzed, and the bearing stiffness was changed to analyze the inherent frequency and vibration characteristic of the …
Analysis On Drying Performance Of Calcium Propionate In Thin-Film Dryer,
2015
College of Mechanical and Power Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China
Analysis On Drying Performance Of Calcium Propionate In Thin-Film Dryer, Chen Guangyu, Li Qingsheng, Li Naiyu
Food and Machinery
The thin-film dryer process calculation mathematical model was established, with 25% calcium propionate as the research object, using the numerical simulation software MATLAB, drying rate and drying length was obtained and the influence of feed temperature, rotate speed, feed rate, and heating temperature was also discussed. The results showed that feed rate and heating temperature had a great influence on drying rate and drying length, while feed temperature and rotate speed had less influence on drying rate and drying length, which provided the basis for calcium propionate drying.
Optimizational Design And Simulation Of High-Speed Parallel Manipulator For Seed Separator,
2015
College of Mechanical Engineering of Tianjin University of Science and Technology, Tianjin 300222, China
Optimizational Design And Simulation Of High-Speed Parallel Manipulator For Seed Separator, Fan Yong, Wang Zhengcan, Wang Hongbin, Shi Yongjian
Food and Machinery
For seed separator actuator working characteristics of the low speed and low load, a small high-speed parallel manipulator was designed as seed separator of actuators. Using SolidWorks and MATLAB software simulation technology, established the simulation model of robot hand fully, and Usesd full performance indicators to make optimization design for parallel mechanism. The results show that the manipulator work within the scope of the condition number of jacobian matrix is small, smooth fluctuations, and manipulator kinematics performance and driving performance are good. Research on the establishment of the prototype of the manipulator and the control method has certain reference value.
Design And Experiment On Type Of Rollers Feeding Device Of Cutting Opening At Back Of Shrimp,
2015
Mechanic and Electronics College, Agriculture University of Hebei, Baoding, Hebei 071001, China
Design And Experiment On Type Of Rollers Feeding Device Of Cutting Opening At Back Of Shrimp, Wang Zehe, Zhang Xiuhua, Zhang Lili, Yi Jinggang
Food and Machinery
A cutting device for shrimp was designed, and a series of tests were carried out on efficiency of back open of shrimp and sense evaluation, between on gear knife and knife, post and reverse rotation, rotation speeds. The results showed that: by using the positive-free geared knife to cut shrimp when it came to 350~400 r/min, the cutting result achieved best. The device is stable, efficiency and suiting practice.
Properties Of Bay Scallop And Design Of V-Wheel Roller Grader,
2015
College of Mechanical and Electrical Engineering, Agricultural University of Hebei, Baoding, Hebei 071001, China
Properties Of Bay Scallop And Design Of V-Wheel Roller Grader, Wu Honglei, Yi Jinggang, Zhang Zhijun, Yin Xinling
Food and Machinery
The morphological properties of the bay scallop affects weight properties were analyzed quantitatively, by determining the shell length as a key trait for grading work. By combining the characteristics of the physics properties of the bay scallop, a V-wheel roller grader was designs. and Slid-works was used to build a dimensional machine model of V-wheel roller grader. The results showed that the design of V-wheel roller grader was reasonable and the structural was novel, can achieve high efficiency and precision grade scallops.
Design And Test On Continuous Peeling Device For Shrimp,
2015
College of Mechanical and Electrical Engineering, Agricultural University of Hebei, Baoding, Hebei 071001, China
Design And Test On Continuous Peeling Device For Shrimp, Zhang Zeming, Wang Zehe, Zhang Xiuhua, Wang Wei, Yang Shuhua
Food and Machinery
It proposed a program of continuous peeling for shrimp, and determined that the roller's nip angle was the major impact factor for shrimp peeling effecienby. The equipment was designed for continuous shrimp peeling, and tests were carried out to optimize structural parameters. Tests showed that with the decreases of the thickness of shrimp, the loss of shrimp gradually increased, while the sensory score represented by success rate and the difficulty of peeling increased, thus determining the classification level of peel shrimp 82～100 kg-1, fully guarantee the success rate of peeling; with the increase of the rotational speed, the …
Study On A New Type Of Equipment For Yuba Production,
2015
School of Mechanical & Electrical Engineering, Henan University of Technology, Zhengzhou, Henan 450001, China
Study On A New Type Of Equipment For Yuba Production, Yuan Fucai, Sun Hailiang
Food and Machinery
In order to ensure Yuba production for high quality, efficiency and continuousness, by analyzing the current situation of domestic and international in Yuba production, and study the Yuba production equipment commonly used features, a new type of equipment for continuous Yuba production was designed. By using "Pro/E" software, designed the virtual design of 3D view model in equipment and its key components. Through the virtual assembly and interference inspection indicaed that the device was reasonable in structure, and had no interference phenomenon. Has certain practical value and theoretical significance of the study.
Design Of Coconut Husking Machine,
2015
Hainan University Electrical and Mechanical College, Haikou, Hainan 570228, China
Design Of Coconut Husking Machine, Zhang Zhiqiang, Fan Junqing, Wang Tao
Food and Machinery
From the aspects of coconut shell dryer at home and abroad research results summary, analysis analyzed the merit and shortcoming of all kinds of research, combining the reality of life and the actual operation, based on the geometric, physical and mechanical properties of coconut research, design a kind of roller tooth coconut peel dryer was designed. Used in the design of tooth nail pierced into the coconut, and nail tooth as the roller gear shaft rotates, the coconut coat torn off. Ultimately, stripped of coconut processing production process realized mechanization, the The coconut stripped machine structure is simple, but itand …
Studies On Antifreezing Of Silver Carp Enzymatic-Hydrolysates In Frozen Surimi,
2015
Department of Food and Biological Engineering, Changsha University of Science and Technology, Changsha, Hunan 410114, China
Studies On Antifreezing Of Silver Carp Enzymatic-Hydrolysates In Frozen Surimi, Li Xianghong, Liu Zhongxiang, Deng Haiping, Liu Yongle, Yu Jian, Wang Faxiang, Wang Jianhui
Food and Machinery
The application of silver carp enzymatic-hydrolysates (Protamex hydrolysates, PH and Alcalase hydrolysates, AH) in frozen surimi was studied, with an untreated mince (CTRL) and the effects of sucrose–sorbitol on the frozen surimi as the comparison. Amino acid composition and amino acid nitrogen analysis showed that PH had higher contents of Asp, Lys and free amino acids (P<0.05). Relative molecular weight distribution results indicated that PH had more fractions of high molecular weights. Textural analysis of frozen surimi demonstrated that after 4 weeks frozen, gel strength and hardness of 2% PH and sucrose-sorbitol added group increased. Elasticity of all the samples was slightly lower. And under the frozen condition, all samples’ color was less affected. Scanning electron microscope (SEM) results displayed that protein aggregation of 2% PH and sucrose-sorbitol added groups were less, and the microstructures were less porous and more homogeneous. The surfaces of CTRL and 8% AH added groups showed obvious holes. This study indicates that PH can help to maintain quality of frozen surimi, and provides preliminary evidence for development of a possible new generation cryoprotectans using silver carp hydrolysates.
Kinetic Study Of Non-Enzymatic Browning In Chinese Jujube Concentrate During Storage,
2015
Tianjin Tianshi College, Tianjin 301700, China
Kinetic Study Of Non-Enzymatic Browning In Chinese Jujube Concentrate During Storage, Han Xifeng, Li Shuqi, Qiao Jingcheng, Sun Yue
Food and Machinery
Changes of qualities related to non-enzymatic browning in Chinese jujube concentrate at different storage temperatures (4 ℃, 26 ℃and 37 ℃) for 7 months were evaluated. Changes of reducing sugar, vitamin C, 5-hydroxymethylfurfural (HMF) were fitted with zero-order, first-order models respectively. The results showed that the fit of the zero-order model was superior to the first-order model to explain the kinetic changes of reducing sugar, and the fit of the first-order model was superior to the zero-order model to explain the kinetic changes of Vc. At 4 ℃, 26 ℃ or 37 ℃, a correlation between HMF formation and A …
Quality And Storage Stability Of High Hydrostatic Pressure-Treated Squid,
2015
Department of Food Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, China
Quality And Storage Stability Of High Hydrostatic Pressure-Treated Squid, Jin Yafang, Deng Yun
Food and Machinery
Effects of high hydrostatic pressure (HHP) treatments on the quality and shelf life of squid were studied. Squid muscles were high-pressure processed at pressure levels of 200, 400, 600 MPa for 5, 10, 20 minutes (25 ℃). Then the treated samples were stored at 4 ℃ for 10 days. The effects of HHP on biochemical, pH and microbiological characteristics were analyzed. The results showed that HHP retained the moisture, protein and fat contents of fresh squid. And no significant changes were observed in pH after processing. HHP resulted in significant reductions (P＜0.05) in microorganisms. The total viable counts (TVC) decreased …
Effects Of Irradiation On Sterilization And Quality Of Bee Pollen Of Camellia,
2015
Institute of Nuclear Agricultural Science & Space Mutation Breeding, Changsha, Hunan 410125, China
Effects Of Irradiation On Sterilization And Quality Of Bee Pollen Of Camellia, Luo Zhiping, Meng Lanzhen, Xu Yuanfang, Zhang Qiling, Peng Ling
Food and Machinery
The effects of 60Co-γ irradiation on sterilization and main physical and chemical qualities of bee pollen of camellia were studied. The results showed that irradiation had obvious sterilizing effects on bee pollen of camellia, for example, the sterilizing rate reached more than 99% at the irradiation dose of 6 kGy, at 10 kGy, all the microorganism indicators of irradiation treated bee pollen of camellia met the standards which published in national code of good irradiation practice for the control of microorganism in pollen. The staphylococcus aureus and salmonella were not been found in the normal and irradiation treated samples. …
