Study On Release Of Co During The Cigarette Smoldering And Puffing Periods,
2018
College of Food and Bioengineering, Zhengzhou University of Light Industry, Zhenzhou, Henan 450001, China; Technology Center, China Tobacco Fujian Industrial Co., Ltd., Xiamen, Fujian 361021, China
Study On Release Of Co During The Cigarette Smoldering And Puffing Periods, Chen Kunyan, Zhang Junsong, Li Qiaoling, Zhang Yingpu, Huang Huizhen, Guo Songbin, Yu Yumei
Food and Machinery
The release of CO during the cigarette smoldering and puffing periods was firstly studied by combining a dedicated modern experimental approach for quantifying gas-phase temperature with the tobacco pyrolysis and combustion reactions system, which guarantees more accurate reaction conditions were used to mimic the thermal environment inside a burning cigarette. Basing on the two cigarette paper burn lines (PBL) at smoldering and puffing, the cigarette burning zone were divided into three regions. The first region was in front of the PBL at 0 s (R1), the second region was between the two PBL (R2) and the third region was behind …
Study On Detection Of Illegal Additives In Sedative Health Food By Lc-Q-Tof/Ms,
2018
Taiyuan University of Technology, Taiyuan, Shanxi 030024, China; Taiyuan Customs District, Taiyuan, Shanxi 030024, China
Study On Detection Of Illegal Additives In Sedative Health Food By Lc-Q-Tof/Ms, Kang Ning, Gao Yuanhui, Gao Lizhen
Food and Machinery
LC-Q-TOF/MS was used to detect five illegal additives (rotundine, sinomenine, venlafaxine, melatonin, zaleplon) in sedative health food. The five illegal additives were extracted by ultrasound with a mixture of methanol and ammonium acetate 20 mmol/L. A gradient system of a mixture of 0.1% formic acid with multi-reaction monitoring (MRM) was employed for quantitative determination at the ion source for ESI source, and the positive ion detection conditions were employed. The time-of-flight mass spectrometer was chosen, and the detecting parameters were set up and optimized. Qualitative and quantitative analysis of 5 kinds of illegal additives were carried out. The results showed …
Establishment Of A Multiplex Pcr System For Detection Of Five Tetracycline Resistance Genes In Poultry Bacteria,
2018
Institute for Agri-Food Standards and Testing Technology, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China; School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
Establishment Of A Multiplex Pcr System For Detection Of Five Tetracycline Resistance Genes In Poultry Bacteria, Bai Long, Shao Yi, Huang Liujuan, Feng Bo, Zhou Changyan, Suo Yujuan, Bai Yalong, Lin Miao
Food and Machinery
In order to establish a multiplex polymerase chain reaction (PCR) method for simultaneous detection of five tetracycline resistance genes including tetA, tetD, tetG, tetS and tetX in poultry bacteria, the concentrations of primers and Taq DNA polymerase, as well as the annealing temperature used in the multiplex PCR system were optimized, then the sensitivity and specificity were examined, and finally, the method was applied for detecting of tetracycline-resistant bacteria isolated from poultry to verify its applicability. The results showed that, the optimized system for the multiplex PCR reaction was: 5 μL of mixed DNA template, 1 μL of Taq enzyme, …
The Application And Perfection Of Punitive Compensation System In Food Safety Law,
2018
School of Humanity and Law, Huazhong Agricultural University, Wuhan, Hubei 430070, China
The Application And Perfection Of Punitive Compensation System In Food Safety Law, Li Changjian, Lu Airong
Food and Machinery
One of the key problems in food safety management is the low illegal cost. The punitive compensation system is an important system, which raise the illegal cost in the regulation of food safety and has the great significance. Compared with developed countries, the punitive damages in food safety law system in China is still in its infancy, and in the aspect of legislation, the free of cost food is not invovled in the scope, and the compensation will be giving away free food subjective not contain elements of negligence, such problems as unreasonable compensation calculation. To give full play to …
Comparison And Enlightenment Of Legal System Of Food Recall Between China And Foreign Countries,
2018
School of Humanity and Law, Huazhong Agricultural University, Wuhan, Hubei 430070, China
Comparison And Enlightenment Of Legal System Of Food Recall Between China And Foreign Countries, Shang Qing, Guan Jiayi
Food and Machinery
Food recall system is to strengthen supervision, to ensure food safety important line of defense.By means of literature analysis and comparative analysis, summarizes the problems and shortcomings of the Chinese food recall legal system based on the comparison between China and foreign countries and analyzes the useful experience of the American, Canadian and Japanese food recall legal systems. To provide corresponding guidance and suggestions for the improvement of the Chinese food recall system.
International Co Governance Dimension Of Food Safety In China,
2018
School of International Law, Southwest University of Political Science and Law, Chongqing 400020, China
International Co Governance Dimension Of Food Safety In China, Zhu Jing
Food and Machinery
Due to the global trend of food trade, food safety has become the focus of global attention, and the establishment of the credibility of China's food industry, international co-governance has become the consensus of China's food safety assurance. However, in order to promote the international Co-governance of food safety in China smoothly, it is still facing a series of challenges, such as the absence of corresponding international co-governance mechanism, the inconsistency of international food safety standards and the need to improve the cooperation between government and enterprises. Therefore, it is necessary to Learning from the mature and advancing Model of …
Flow Pattern Distribution Of Meshing Counter Rotating Twin Screw Extruders At Different Temperatures,
2018
School of Material and Mechanical Engineering, Beijing Technology and Business University, Beijing 100048, China; Plastic Beijing Municipal Key Laboratory of Health and Safety Quality Evaluation Technology, Beijing 100048, China
Flow Pattern Distribution Of Meshing Counter Rotating Twin Screw Extruders At Different Temperatures, Wang Shaofeng, Zhang Yuan, Liu Meilian, Huang Zhigang, Zhao Yulian, Gu Jin, Song Yu
Food and Machinery
In order to explore the distribution law of flow path in isothermal twin screw extruder under isothermal and non isothermal state,using Solidworks 3D modeling software to establish the physical model of meshing counter rotating twin screw extrude, the corresponding numerical simulation is carried out in the Polyflow analysis software.Numerical results show that: in the isothermal problem, the pressure, viscosity and shear rate of the exit direction vary with the increase of the speed of the twin screw; in the non isothermal problem, with the increase of the rotating speed of the twin-screw, the direction of the extrusion direction increases from …
Particle Characteristics Of Centrifugal Atomization By Rotary Disk For Newtonian Viscous Fluid,
2018
College of Mechanical Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China; Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment & Technology, Wuxi, Jiangsu 214122, China
Particle Characteristics Of Centrifugal Atomization By Rotary Disk For Newtonian Viscous Fluid, Wang Dongxiang, Cui Zhengwei, Yu Jianfeng, Yang Xinjun
Food and Machinery
For rotary disk atomizer in this paper, the particle characteristics has been investigated with Rosin/Paraffin mixture as the working fluid. The effects of different technological parameters on the ligament number, diameter of ligament, capillary wavelength and particle diameter were analyzed, and the dimensionless prediction model was obtained. The result showed that the ligament number is mainly determined by the Web and the St number, and it is only controlled by the surface tension for low viscous fluids. Due to ligament stretching caused by centrifugal effect, the pinch-off capillary wavelength is about 3.56 times of the ligament diameters, however the actual …
Removable Cold Storage Device With Pe-Rt Low Temperature Heat Pipe And Its Cool Storage Effect Using Hydrocarbon Refrigerants,
2018
Food Science and Engineering College, Qingdao Agricultural University, Qingdao, Shandong 266109, China
Removable Cold Storage Device With Pe-Rt Low Temperature Heat Pipe And Its Cool Storage Effect Using Hydrocarbon Refrigerants, Liu Jinguang, Liu Wenyao, Wang Shiqing, Song Qingwu, Jiang Wenli, Li Fei
Food and Machinery
In order to solve the problem of high cost and difficult welding of metal materials, as well as avoid the ozone depletion and global warming by Freon refrigerant, a cold storage device made of PERT plastic was produced, with a low cost and an easy assembly. In this study, a polyethylene of high temperature tolerant tube instead of the copper one was used, complied with hydrocarbon refrigerant HCR22 as heat pipe circulating working fluid. The results showed that the best filling ratio of PE-RT plastic heat pipe group was 33%, which was the same as copper heat pipe group, with …
Development Of A Bionic Plucking Finger For High-Quality Green Tea,
2018
Nanjing Forestry University, College of Mechanical and Electronic Engineering, Nanjing, Jiangsu 210037, China
Development Of A Bionic Plucking Finger For High-Quality Green Tea, Hao Miao, Chen Yong, Pan Zhigang, Sun Ye
Food and Machinery
Presents a kind of bionic end-effector which can imitate the human hand to pluck tea flushes. The mechanical structure of the bionic plucking finger is designed. Dynamic and static analysis are carried out to improve the dexterity and compactness. Genetic algorithm is employed to optimize the geometric parameters. The transmission efficiency of driving force is increased by 26.6%. Then, the prototype of the bionic plucking fingers is made, and the design of pneumatic drive and control system is completed. The indoor tests show that the success rate of plucking is about 70%, which can realize the expected action.
A Strategy Of Temperature Control In Tea Dryer Based On Improved Particle Swarmoptimization(Ipso),
2018
College of Mechanical Engineering, Inner Mongolia University for the Nationalities, Tongliao, Inner Mongolla 028043, China
A Strategy Of Temperature Control In Tea Dryer Based On Improved Particle Swarmoptimization(Ipso), Wu Lan, Liu Yarong
Food and Machinery
Aiming at the problems of low thermal efficiency, unstable temperature and difficult guarantee of tea quality of tea dryer, the coal-fired hot air-drying furnace was studied in order to find an effective constant temperature control method. An improved particle swarm optimization (IPSO) algorithm was proposed by chaotic processing of particle swarm optimization (PSO). Then the parameters of fuzzy PID controller were optimized by IPSO to overcome the shortcomings of PSO, including premature, low optimization efficiency and real-time on-line adjustment of PID parameters. According to the real-time temperature of the hot blast stove, the amount of smoke discharged from the hot …
Migration And Mathematical Simulation Of Aluminum And Magnesium From Coated Paper Cup Into Acid Food Simulants,
2018
Key Laboratory of Product Packaging and Logistics, Institute of Packaging Engineering, Jinan University, Zhuhai, Guangdong 519070, China
Migration And Mathematical Simulation Of Aluminum And Magnesium From Coated Paper Cup Into Acid Food Simulants, Ding Congyang, Lin Qinbao, Luo Jiutian, Li Zhong, Lia Ojia
Food and Machinery
In order to study the migration of metal elements Al and Mg into acidic foods in coated paper cups and the effectiveness of mathematical simulation software to simulate migration, eight kinds of coated paper cup samples were digested by wet digestion, and then inductively coupled plasma atomic emission spectrometry (ICP-OES)was used to detect the initial contents of aluminum (Al) and magnesium (Mg) in eight kinds of coated paper cups and their migration into acidic food simulants (3% acetic acid solution). The initial contents of Al and Mg in 8 paper cups were 841.6～3 482.0 and 179.1～19 720.1 mg/kg, respectively. Under …
Study On Visual Code-Based Defect Detection Technology For Production Date Of Dairy Packaging,
2018
College of Mechanical Engineering and Applied Electronics Technology, Beijing 100124, China
Study On Visual Code-Based Defect Detection Technology For Production Date Of Dairy Packaging, Sun Xiaona, Liu Jichao, Gao Guohua
Food and Machinery
Aiming at the problems of labor intensity, low automation level, and low efficiency in manual inspection of production date defects, the machine vision-based dairy production date coding defect detection system was developed. The system uses a CCD camera, computer, light source, etc. to build a hardware platform, and image processing techniques, such as median filtering, binarization, image segmentation, and template matching were used to achieve the goal of defective detection, including production date missing and fuzzy codes. The experimental results showed that the system could accurately identify products with defective production date, and achieve the expected results, showing practical significance.
Research On Modern Food Packaging Design Based On Interesting Composition Form,
2018
School of Art and Design, Shaoyang University, Shaoyang, Hunan 422000, China
Research On Modern Food Packaging Design Based On Interesting Composition Form, Zhang Bingyu
Food and Machinery
In view of the present design status of the food packaging market, which is very similar and lack of innovation bright spots, discusses the relationship between the color application, pattern creation, modeling structure and material composition, and expounds the skills and functions of the application of interesting forms in the design of food packaging. A case study of food packaging is presented to illustrate the point of view and put forward new ideas for future development and innovation of food packaging.
Isolation, Identification And Growth Charactoristics Of Histamine-Forming Bacteria From Live Ovalipes Punctatus,
2018
State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food and Pharmacy, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, China
Isolation, Identification And Growth Charactoristics Of Histamine-Forming Bacteria From Live Ovalipes Punctatus, Yu Hui, Chen Jie, He Zhiyong, Zhang Shuang, Zeng Maomao
Food and Machinery
The gills and guts of live Ovalipes punctatus were screened for histamine-forming bacteria (HFB) by HBI medium and TLC methods. Furthermore, the histamine-forming ability was evaluated by HPLC method, and the bacteria was identified by 16 S rDNA morphology sequence analysis. The effects of temperature, initial pH value and NaCl contents on the growth characteristics and histamine production as well as the inhibitory effects of chitooligosaccharide (COS) on the histamine-forming bacteria. One strain HFB was isolated, identified and named as Enterobacter aerogenes OP-G2 based on morphology and 16S rDNA sequence analysis. This strain could produce (46.96±1.94) mg/L histamine in TSBH …
Multi Channel Detection System Of Eggshell Crack Based On Dsp,
2018
Jiangsu University, Zhenjiang, Jiangsu 212013, China
Multi Channel Detection System Of Eggshell Crack Based On Dsp, Xu Baowen, Sun Li, Cai Jianrong, Dai Qijun
Food and Machinery
The eggshell-crack can be detected by the acoustic features of impact response signal in a non-destructive way. To collect and analyze the acoustic signals in real time, an eggshell crack detection system based on TMS320F28335 was designed. The acquisition of the responded audio signal was triggered by the external interrupt of DSP. By comparison of frequency spectrums between intact and cracked eggs, there is a significant difference in the audio signal spectrum. The frequency of the second formant of the intact egg spectrum is concentrated at about 6 890 Hz, while the frequency of the second formant of the cracked …
Simulation Analysis Of Flow Field Characteristics Of Chrysanthemum Drying Based On Fluent,
2018
College of Mechanical & Electrical Engineering of Henan Agricultural University, Zhengzhou, Henan 450002, China
Simulation Analysis Of Flow Field Characteristics Of Chrysanthemum Drying Based On Fluent, Li He, Zhang Zhi, Ren Yuan, Zhang Kaifei
Food and Machinery
In the process of drying chrysanthemum, the flow field distribution in the dryer was the main factor affecting its quality. In order to further study the distribution and variation of flow field in the drying process of chrysanthemum, a physical model of the drier was established for the negative pressure dryer. The distribution of velocity field, pressure field and temperature field in the drying process of chrysanthemum were obtained by mesh division, parameter determination and calculation. The numerical simulation of flow field distribution in the drying process of chrysanthemum was realized. In order to verify the accuracy of the simulation …
Study On The Two-Stage Extraction Of Glycyrrhizic Acid By Combined Enzymes And Ultrasonic Method,
2018
School of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
Study On The Two-Stage Extraction Of Glycyrrhizic Acid By Combined Enzymes And Ultrasonic Method, Liang Xia, Lu Xiaoling
Food and Machinery
Taking glycyrrhizic acid extraction rate was used as an index, the technological conditions of extraction of glycyrrhizic acid from Licorice wad optimized by two-stage method of combined enzymes and ultrasonic. When the mass of glycyrrhizic acid was 1 g, the optimum technological conditions for the enzymatic stage were as follows: the optimal ratio of combined enzymes (pectinase∶cellulose) was 1∶3 (U/U); the dosage of combined enzymes was 175 U/g·Substrate, reacted at pH 5.5 for 1 h at 50 ℃; and the particle size of raw material was 40 mesh with the ratio of material to liquid 1∶25 （g/mL）. The optimum technological …
Refining Flavonoids From Stems And Leaves Of Physalis Alkekengi And Their Antioxident Activity,
2018
Food and Biological Technology College, Changchun Vocational Institute of Technology, Changchun, Jilin 130033, China
Refining Flavonoids From Stems And Leaves Of Physalis Alkekengi And Their Antioxident Activity, Li Qun, Sun Mingzhe, Wu Wei, Jiang Xiujuan, Cao Baiying
Food and Machinery
The flavonoids from stems and leaves of Physalis alkekengi ( PSF ) were refined by macroporous adsorption resin, and their antioxidant activities were evaluated in vitro and in vivo. The PSF were obtained using with AB-8 macroporous adsorption resin washed by 70% ethanol, and the purity was 39.16%. After refining, the scavenging activities of PSF on NO-2·and ABTS+· were 81.36% and 91.49%. The anti-oxidative capability in linoleic acid lipid overoxidation system was 85.26%. The refined PSF not only significantly increased thymus index and spleen index（P＜0.05）, but also increased the activity of T-AOC, GSH-Px and SOD …
Optimization Of Ultrasonic-Assisted Extraction Of Amygdalin From Prunus Humilis Seed,
2018
College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
Optimization Of Ultrasonic-Assisted Extraction Of Amygdalin From Prunus Humilis Seed, Zhang Xin, Li Ruiling, Sun Xueru, Wu Qiong, Wu Xiaotong
Food and Machinery
In this study, the seeds of Prunus humilis were used to extract amygdalin from the kernels by using ultrasound-assisted ethanol , and HPLC was used for detection. The amygdalin extraction rate was used as the detection index, and the ethanol concentration and the liquid-to-material ratio, extraction temperature, ultrasonic time and ultrasonic power were tested by single factor test, and then the relationships between each factor and extraction rate were analyzed. Thereafter, based on the two-level, five-factor experiment and response surface method, ultrasonic extraction process were optimized to obtain the extraction of Eucalyptus seeds. The optimum conditions of amygdalin included liquid …
