Thermal Pyrolysis Characteristics And Kinetics Study Of Reconstituted Tobacco With Different Coating Rates,
2021
Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, Henan 450001, China
Thermal Pyrolysis Characteristics And Kinetics Study Of Reconstituted Tobacco With Different Coating Rates, Zhang Guo, Yue Xian-Ling, Ye Jian-Bin, He Yuan, Zhang Jun-Song, Liang Miao
Food and Machinery
In order to investigate the pyrolysis characteristics of reconstituted tobacco with different coating rates, thermogravimetry technique combined with Coats-Redfern method was adopted to study the pyrolysis behavior and the variation of kinetic parameters of main weight loss stages. Furthermore, the pyrolysis gas release behavior was monitored by TG-FTIR technique. The results showed that: ① The content of C increased gradually and the content of O decreased with the increase of coating rate of reconstituted tobacco. While the change in the microstructure of reconstituted tobacco was not obvious. ② The thermogravimetric process of reconstituted tobacco can be divided into five stages: …
A Portable And Rapid Gutter Oil Detector Based On Multi-Feature Neural Network,
2021
Department of Electronic and Computer Engineering, Southeast University Chengxian College, Nanjing, Jiangsu 210088, China
A Portable And Rapid Gutter Oil Detector Based On Multi-Feature Neural Network, Zhang Zhi-Peng, Huang Shi-Zhen, Lin Meng-Ru, Lu Qing-Ru, Lin Yan, Chen Rui-Qi
Food and Machinery
An offline oil detection device is designed based on the heterogeneous architecture of a System on a Programmable Chip (SoPC). The SoPC platform is constructed by porting Cortex-M0 soft core to Field Programmable Gate Array (FPGA). Using FPGA hardware resources, the operation order is optimized through the pipeline design with serial-parallel hybrid methods. Moreover, the parameter calibration accelerator and neural network accelerator are designed and connected to the bus system. Experimental results show that this device can perform the qualitative analysis and classification of gutter oil accurately with high detection efficiency. Compared with the traditional similar terminal gutter oil detection …
Analysis Of Stable Carbon Isotope Characteristics Of Formaldehyde In Food And Its Application In Source Analysis Of Formaldehyde,
2021
Hubei Provincial Institute for Food Supervision and Test, Wuhan, Hubei 430075, China; Hubei Provincial Engineering and Technology Research Center for Food Quality and Safety Test， Wuhan, Hubei 430075, China
Analysis Of Stable Carbon Isotope Characteristics Of Formaldehyde In Food And Its Application In Source Analysis Of Formaldehyde, Han Li, Yu Ting-Ting, Liu Di, Yang Qing, Gao Fang, Wang Hui-Xia
Food and Machinery
Based on the method of Gas Chromatography-Combustion-Isotope Ratio mass Sprectrometry (GC/C/IRMS), the contents of formaldehyde and the δ 13C value in aquatic products, dried edible fungi, fruits and vegetables were tested and analyzed. The results showed that the mass fraction of formaldehyde in the squid samples was 0.341~24.185 mg/kg, and the δ 13C value was -48.167‰~-24.514‰; the mass fraction of dragon fish samples was 54.555~121.416 mg/kg, and the δ 13C value was -45.430‰~-27.468‰. In the dried edible fungi, formaldehyde was detected only in dried Lentinus edodes of 212.741 mg/kg, and the δ 13C value were ranging …
Uncertainty Evaluation For Determination Of Amantadine In Egg By Isotope Dilution-Uplc-Ms/Ms,
2021
Guizhou Academy of Testing and Analysis, Guiyang, Guizhou 550000, China
Uncertainty Evaluation For Determination Of Amantadine In Egg By Isotope Dilution-Uplc-Ms/Ms, Ma Kai, Bao Na, Huang Yong-Qiao, Wu Xin-Wen
Food and Machinery
A method for the evaluation of the uncertainty of amantadine in egg by ultra-performance liquid chromatography-stable isotope dilution mass spectrometry was established. Based on SN/T 4253—2015, the mathematical models of uncertainty was established and the sources of uncertainty were analyzed and evaluated, while the components of uncertainty were composed. The results showed that the expanded uncertainty was 4.9 μg/kg （k=2, 99% confidence interval） when the content of amantadine was 25.2 μg/kg, mainly caused by standard solution preparation and curve fitting.
Evaluation Of Uncertainty In The Determination Of Ethyl Carbamate In Chinese Spirits By Isotope Dilution Gc-Ms Method,
2021
Yantai Testing Center for Food and Drug, Yantai, Shandong 264000, China
Evaluation Of Uncertainty In The Determination Of Ethyl Carbamate In Chinese Spirits By Isotope Dilution Gc-Ms Method, Wang Kai-Yu, Zuo Hui-Jun, Yu Xin-Xin, Du Yun, Ma Yan-Ling, Wu Shuai
Food and Machinery
According to GB 5009.223—2014 "National Standard for Food Safety, Determination of Ethyl Carbamate in Foods", the ethyl carbamate in liquor was determined, and the uncertainty of the measuring result was evaluated according to JJF 1059.1—2012 "Measurement Uncertainty Evaluation and Expression". Analysis found that the uncertainty of the measurement results was independent of not only the internal standard concentration of the isotope or the volumetric volume of the standard solution series, but also the volume of the sample after processing. Moreover, the uncertainty component introduced by the internal standard solution only related to the volume of the internal standard liquid. The …
Uncertainty Evaluation Of The Determination Of Vitamin C In Fruits And Vegetables By High Performance Liquid Chromatography,
2021
Shanghai Center of Agri-products Quality and Safety, Shanghai 201708, China
Uncertainty Evaluation Of The Determination Of Vitamin C In Fruits And Vegetables By High Performance Liquid Chromatography, Wang Xia, Zhang Wei-Yi, Han Yi-Yi, Chen Mei-Lian, Feng Dong-Sheng
Food and Machinery
To evaluate the uncertainty of the determination of vitamin C in fruits and vegetables by high performance liquid chromatography, a mathematical model was established to evaluate each uncertainty component, and the standard uncertainty and extended uncertainty of the synthesis were calculated. The results showed that the amounts of vitamin C in samples was 33.7 mg/100 g, and the expanded uncertainty was 1.4 mg/100 g (k=2). The uncertainties of the determination mainly come from the preparation of standard solution and the repeatability of determination.
Method Improvement Of Gas Chromatography In Determination Of Inositol In Infant And Young Children Formula Milk Powder,
2021
Hunan Testing Institute of Product and Commodity Supervision, Changsha, Hunan 410007, China
Method Improvement Of Gas Chromatography In Determination Of Inositol In Infant And Young Children Formula Milk Powder, Zhu Li, He Hao, Xue Min-Min, Chen Wen-Zhang, Cheng Meng-Ya, Yuan Lie-Jiang, Wu Hai-Zhi
Food and Machinery
Based on the second method of GB 5009.270—2016, a more convenient and efficient gas chromatography method was established for the detection of inositol content in infant formula milk powder. Compared with the second method of GB 5009.270—2016, this method can shorten the drying time and the derivative time on water bath through improving the extraction solvent and extraction methods, the purification methods, the drying methods of the derivatives and the adding sequence and proportion of derivative reagent. What’s more, this method can also reduce the retention time and analysis time in inositol’s detection by optimizing the testing parameters of gas …
The Study And Practice On The Standardized Methods For Rice Bran Oil Safety And Production,
2021
College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China; National Engineering Laboratory for Rice and By-product Deep Processing, Changsha, Hunan 410004, China
The Study And Practice On The Standardized Methods For Rice Bran Oil Safety And Production, Wu Xiao-Juan, Wu Wei
Food and Machinery
According to national, local and industry standards, the entire chain of rice bran oil production was analyzed and the critical control points, main detection indicators and risk assessment systems were determined. The safety and production controlling method of rice bran oil was established in accordance with the actual situation of the enterprise. The results indicated that the establishment and application of this method could reduce the acid value, peroxide value and plasticizer content of rice bran oil products, and increase their oryzanol and phytosterol content. The oryzanol content of 36 kinds of rice bran oil products produced in 2020 was …
Design Of Chocolate Bar Feeding System Based On Linear Array Camera,
2021
Tianjin Key Laboratory of Integrated Design and On-Line Monitoring Foe Light Industry ＆ Food Machinery and Equipment Tianjin University of Science ＆ Technology, Tianjin 300222, China
Design Of Chocolate Bar Feeding System Based On Linear Array Camera, Zheng Chen-Xu, Li Ya
Food and Machinery
A set of automatic feeding system of chocolate bar based on line array camera was designed. Design and select hardware system according to functional requirements; Aiming at the difficulty of hand-eye calibration for linear array cameras, a hand-eye calibration method for dynamic scanning imaging was proposed. After preprocessing the collected images, the template matching was used to identify the target, and the tracking trajectory was optimized and then sent to the robot to grasp and place. The experimental results showed that the grasping error of the robot was less than 0.5 mm, and the feeding speed met the requirements. The …
Rapid Detection Of Protein Contentin Rice Based On Near Infrared Spectroscopy,
2021
College of Food Science, Heilongjiang Bayi Agriculture University, Daqing, Heilongjiang 163319, China
Rapid Detection Of Protein Contentin Rice Based On Near Infrared Spectroscopy, Yin Kun, Liu Jin-Ming, Zhang Dong-Jie, Zhang Ai-Wu
Food and Machinery
In view of the time-consuming, labor-intensive, and costly problem of chemical detection methods in the national standard, the feasibility of near-infrared spectroscopy （NIRS） combined with chemometrics for rapid detection of rice protein was investigated. Based on strategies of variable selection, feature extraction and nonlinear modeling, BiPLS-PCA-SVM was constructed by combining reverse interval partial least squares （BiPLS） with principal component analysis （PCA） and support vector machine （SVM） to improve the performance of the protein regression model. In BiPLS-PCA-SVM, the optimal number of principal components （PCs） was selected by combining Monte Carlo cross validation with the predicted residual sum of squares, and …
Three-Dimensional Flow Field Analysis Of Coaxial Variable Speed Single Screw Extruder With Planetary Gears Based On Ansys,
2021
College of Mechanical and Power Engineering, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, China
Three-Dimensional Flow Field Analysis Of Coaxial Variable Speed Single Screw Extruder With Planetary Gears Based On Ansys, Tang Lin-Sen, Guo Shu-Guo, Wang Li-Yan
Food and Machinery
Use ANSYS/CFX software to analyze the flow channel of a coaxial variable speed single-screw extruder with planetary gears, and compare with the ordinary single screw. Results: compared with the ordinary single screw, the new coaxial variable speed single screw extruder has better pressure building capacity and longer residence time of the material in the screw, which is conducive to better mixing of the material, indicating that the planetary gear is coaxial. The variable speed single screw can locally reduce the material transportation speed, increase the material mixing capacity and the screw pressure building capacity.
Three Dimensional Simulation Analysis Of Second Order Differential Twin Screw Extruder,
2021
Faculty of Mechanical and Power Engineering, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, China
Three Dimensional Simulation Analysis Of Second Order Differential Twin Screw Extruder, Yu Miao, Guo Shu-Guo, Wang Li-Yan
Food and Machinery
The second order asymmetric double screw extruder with mixing element is designed, and the solid model is established by using Solidworks. Based on the finite volume method, the ANSYS/CFX finite element analysis software was used to simulate the movement and processing process of soybean meal in the machine barrel, which was verified by the experiments. Results: when the constant temperature was 80 ℃, the new double-screw extruder produces alternating pressure due to mixing elements, differential asymmetric flow field and volume difference of the first and second stage screw grooves. The material was continuously stretched and compressed and undergoes multiple segmentation …
Design Of Apricot Core-Breaking Device With Squeeze-Tooth-To-Roller And Analysis Of The Strength Of Pressing Roller,
2021
School of Mechanical and Electrical Engineering, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China; Institute of Agricultural Mechanization, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang 830091, China
Design Of Apricot Core-Breaking Device With Squeeze-Tooth-To-Roller And Analysis Of The Strength Of Pressing Roller, Zhu Zhao-Shuai, Zhang Jia-Xi, Yang Li-Ling, Mao Wu-Lan, Wang Yi-Chao
Food and Machinery
The working principle and technical parameters of the helical tooth-to-roller squeezing apricot core shell breaking device are described. The structures were determined, including the shell crushing roller, the double-layer vibrating screen, the eccentric transmission device, the size of the shell crushing roller gap. The modal analysis of the main components of the shell-breaking roller was analyzed with ANSYS-Workbench software, and obtained the first 6-order mode and natural frequency. The lowest-order natural frequency of the shell-breaking roller was 17.258 Hz, which was much higher than its working condition excitation frequency of 5.83～7.50 Hz. There will be no resonance. After testing with …
Design And Analysis Of Automatic Cutting Blade For Slender Jellyfish Silk,
2021
Key Laboratory for Seafood Processing Technology and Equipment, Dalian Polytechnic University, Dalian, Liaoning 116034, China; Tongmyong University, Busan 485201, Korea
Design And Analysis Of Automatic Cutting Blade For Slender Jellyfish Silk, Feng Yi-Ran, Tao Xue-Heng, Wang Xue-Jun, Lu Jin-Shi, Lee Eung-Joo
Food and Machinery
To satisfy the demand for batch cutting and processing of bowl shaped jellyfish, a slender jellyfish cutting automatic cutting blade was designed for bowl shaped jellyfish. The curvature and deflection of the blade were numerically simulated using the Frenet-serret frame formula combined with the shape of the jellyfish skin, and the blade trajectory was obtained as a spatially non-isometric spiral. Two special cutting blades for bowl shaped jellyfish were designed by using heat-treated 440C stainless steel as the material for the blades, taking into account the actual working environment. The mechanical properties of the two blades were analyzed and the …
On-Line Elimination System Of Foreign Materials In Cut Tobacco Based On X-Ray,
2021
Anyang Cigarette Factory, Tobacco Henan Industiral Co., Ltd., Anyang, Henan 455004, China
On-Line Elimination System Of Foreign Materials In Cut Tobacco Based On X-Ray, Han Ming, Wu Xue-Qin, Han Hui-Dan, Zhao Shu-Hua, Zhu Jian-Xin
Food and Machinery
The system was based on the differenceof X-ray absorption capacity of different density materials to design On-line elimination system of foreign materials in cut tobacco based on X-ray. The system uses X-ray to transmit the cut tobacco to form the original density data, and uses the mutation of the original density value to distinguish the foreign materials, so as to realize the function of on-line detection and recognition of foreign materials. And a unique method of screening out foreign materials by parallelogram injection which made the foreign materials close to the center of the parallelogram was designed to improve the …
Improvement On Tobacco Temperature And Moisture Control Method Of Tobacco Heating Cylinder,
2021
Guangxi Zhongyan Industrial Co., Ltd., Liuzhou, Guangxi 545005, China
Improvement On Tobacco Temperature And Moisture Control Method Of Tobacco Heating Cylinder, Cui Sheng, Li Ri-Nan, Kang Jin-Ling, Liu Zhen, Huang Bo
Food and Machinery
In view of the problem that the current tobacco heating cylinder cannot meet the temperature and moisture control requirements of the tobacco under different process conditions, the existing tobacco heating cylinder was designed and improved. A cooling and humidity control system was added to the tobacco, heating cylinder to realize dual-mode adjustment and control of the temperature and moisture of different smoke sheets. According to the temperature and moisture control requirements of the tobacco， the improved tobacco heating cylinder can switch between forward and reverse flow control. Verification experiments showed that the temperature and moisture stability of the improved tobacco …
Research On The Construction Of Traceability System For Food Cold Chain Logistics Based On Blockchain Technology In The Post Epidemic Era,
2021
Institute of Airport Economics, Civil Aviation University of China, Tianjin 300300, China; Economics and Management College, Civil Aviation University of China, Tianjin 300300, China
Research On The Construction Of Traceability System For Food Cold Chain Logistics Based On Blockchain Technology In The Post Epidemic Era, Li Hang, Dong Rui
Food and Machinery
Based on the background of the post epidemic era, the development status of Chinese cold chain logistics market and the pain points of food cold chain logistics information traceability system were analyzed in this review, and the existing problems were discussed and summarized. Based on the blockchain technology, the construction of food cold chain logistics traceability system was also investigated, by using three dimensions of participant setting, system framework design and operation process optimization, and the specific implementation path of the newly constructed traceability system from three aspects of government, enterprise and consumer was expounded.
Coupling Method Of Near Infrared Spectroscopy And Multi Source Information For Potato Quality Identification,
2021
Jincheng School, Sichuan University, Chengdu, Sichuan 611731, China
Coupling Method Of Near Infrared Spectroscopy And Multi Source Information For Potato Quality Identification, Li Xue-Jun, Cheng Hong
Food and Machinery
The classification probability output based on machine vision and near infrared spectroscopy technology was established, and the classification decision model suitable for heterogeneous data was built by using DS evidence fusion rules. The directional gradient histogram and principal component extraction method were used to extract spectral features, and support vector machine and AdaBoost classifier were used for recognition. On this basis, the potato classification model based on feature layer fusion was constructed. By using multi-source information fusion technology, a multi-source information fusion agricultural product quality identification model was established, which integrated the classification decision of nondestructive testing and feature level …
Antioxidant And Antibacterial Activities Of Different Polar Parts From Manilkara Zapota Leaves,
2021
South Subtropical Crops Research Institute of the Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, Guangdong 524091, China; Key Laboratory of Tropical Fruit Biology of the Ministry of Agriculture, Zhanjiang, Guangdong 524091, China
Antioxidant And Antibacterial Activities Of Different Polar Parts From Manilkara Zapota Leaves, Ma Fei-Yue, Zhang Ming, Li Ya, Du Li-Qing, Shuai Xi-Xiang
Food and Machinery
In order to investigate the antioxidant and antibacterial activity of different polar parts (petroleum ether part, ethyl acetate part, n-butanol part and water part) from Manilkara zapota leaves. The DPPH radical-scavenging assay, ABTS radical-scavenging assay and FRAP antioxidant capacity assay were carried out. And the antibacterial effects of different polar parts from Manilkara zapota leaves against Bacilus subtillis, Escherichia coli and Staphylococcus aureus were studied. The results showed that the extracts obtained from ethyl acetate extraction had the highest antioxidant activities; the IC50 of the DPPH radical-scavenging and ABTS radical-scavenging were (0.019±0.010) mg/mL, and the Trolox Equivalent Antioxidant Capacity …
Extraction And Membrane Separation Of Pigment From Seed Coat Of Red Adzuki Bean,
2021
College of Food Science, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China; Heilongjiang Engineering Research Center for Coarse Cereals Processing and Quality Safety, Daqing, Heilongjiang 163319, China; Agri-Food Processing and Engineering Technology Research Center of Heilongjiang Province, Daqing, Heilongjiang 163319, China
Extraction And Membrane Separation Of Pigment From Seed Coat Of Red Adzuki Bean, Jin Li-Mei, Sui Shi-You, Ren Meng-Ya, Bai Jing, Niu Guang-Cai, Li Zhi-Jiang
Food and Machinery
The red pigment from the seed coats of red adzuki beans was extracted by soaking in water and separated by the pressure-driven membrane technology (microfiltration, nanofiltration, etc.), and the separation processes were also optimized. The results showed that the optimal extraction conditions of pigment from seed coats were as follows: the ratio of material to liquid (mass of seed coats: volume of water) at 1∶30 （g/mL）, extraction temperature 90 ℃, extraction time 90 min, and the color value of the extracts reached 7.53. The optimized membrane separation process was the combination of microfiltration (0.22 μm) and nanofiltration membrane (NF245), with …
