Food Safety Risk Assessment Method Based On Improved Hmm,
2021
Wuhan Jiaotong Vocational College, Wuhan, Hubei 430065, China
Food Safety Risk Assessment Method Based On Improved Hmm, Xiong Hui, Tang Hong-Liang, Ding Yong
Food and Machinery
Objective: Solve the problems of low and inaccurate evaluation accuracy of the existing food safety risk evaluation methods. Methods: Based on the construction of food safety risk index, a food risk assessment method combining hidden Markov model and cuckoo search algorithm was proposed. The cuckoo algorithm was used to search the global optimal solution as the initial value of the hidden Markov model, and the Baum Welch algorithm was used for local correction to make it quickly converge to the global optimal solution. The superiority of this method was verified by the experimental analysis of dairy product data. Results: Compared …
Three-Dimensional Flow Field Analysis Of Coaxial Variable Speed Twin-Screw Extruder Based On Cfx,
2021
Machinery and Power Engineering College, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, China
Three-Dimensional Flow Field Analysis Of Coaxial Variable Speed Twin-Screw Extruder Based On Cfx, Tang Lin-Sen, Guo Shu-Guo, Wang Li-Yan, Han Yan-Lin
Food and Machinery
Objective: This research aims to analyze the working condition of the material in the flow channel of the improved coaxial variable speed optimization twin-screw extruder. Methods: Used ANSYS/CFX to simulate and analyze the flow channel value, obtained the movement of the material, and compared it with the traditional screw twin screw. The performance of the two types of screws was compared and analyzed through the macro pressure field, macro speed field, velocity streamline diagram, and velocity vector diagram. Results: After the study, it was found that the pressure building capacity and mixing performance of the coaxial variable speed optimized twin …
Design Of Steamed Bread Machine Production Line Based On Ahp And Triz Theory,
2021
Zhongyuan Institute of Technology, Zhengzhou, Henan 451191， China
Design Of Steamed Bread Machine Production Line Based On Ahp And Triz Theory, Fu Xiao-Li, Xu Qiao, Yang Shu-Feng, Zhang Bin
Food and Machinery
Objective: In view of the problems of low human-computer interaction, insufficient modeling aesthetics and lack of design characteristics in the production line of steamed bread machine, the fuzzy evaluation method combined with AHP and TRIZ is used for the innovative design. Methods: The key areas of positioning design were obtained by analytic hierarchy process. The TRIZ standard engineering parameters were used to analyze the contradiction and construct the contradiction matrix. The invention principle was used to find the optimal solution of the design scheme, and the matter field analysis method was introduced to solve the specific practical problems of the …
Design Of A Small Integrated Machine For Jujube-Clamping-Peanut,
2021
College of Mechanical & Electrical Engineering, Henan Vocational College of Applied Technology, Zhengzhou, Henan 450042, China
Design Of A Small Integrated Machine For Jujube-Clamping-Peanut, Gao Hai-Chao, Han Hai-Min, Chen Hui-Tao
Food and Machinery
Objective: In view of the fact that material selection for large-scale processing of jujube-clamping-peanut cannot be guaranteed and the food hygiene of manual operation cannot reach the standard, a small integrated machine for jujube-clamping-peanut was designed. Methods: The research status of jujube kernel removal was analyzed, the design index of small jujube-clamping-peanut integrated machine was formulated, and based on the process flow of jujube kernel removal and jujube-clamping-peanut, the mechanical structure of the jujube-clamping-peanut integrated machine was designed. Results: The prototype experiment shows that the jujube automatic charging and positioning rate was 94%, The peanut automatic charging and positioning rate …
Fault Diagnosis Of Permanent Magnet Motor Stator Winding Based On Stacked Auto Encoder,
2021
School of Intelligent Engineering, Huanghe Jiaotong University, Jiaozuo, Henan 454950, China
Fault Diagnosis Of Permanent Magnet Motor Stator Winding Based On Stacked Auto Encoder, Tian Guang-Qiang, Feng Wen-Cheng, Wang Fu-Zhong
Food and Machinery
Objective: To improve the accuracy and comprehensiveness of permanent magnet motor stator winding fault diagnosis. Methods: A fault diagnosis model of permanent magnet motor stator winding based on stack autoencoder （SAE） was proposed, and a neural network composed of SAE and Softmax classifier was used to train the network with fault sample data. The simulated annealing particle swarm optimization （SAPSO） algorithm was used to optimize the connection weight and bias of the network, and determined the optimal network structure. Results: The network had been used to realize the fault diagnosis of inter-turn short-circuit, inter-phase short-circuit, inter-phase insulation reduction, and poor …
Design Of On Line Detection System For Cigarette Capsules Based On Machine Vision,
2021
School of Mechanical Engineering, Zhengzhou University, Zhengzhou, Henan 450001, China
Design Of On Line Detection System For Cigarette Capsules Based On Machine Vision, Chang Jing-Jing, Zheng Peng, Wang Wen-Xiu, Xu Ying-Jie
Food and Machinery
Objective: At present, mechanical screening method is widely used in cigarette capsules size separation, which has some problems, such as low size detection accuracy, unable to separate different color capsules, leakage capsules and so on. Aiming at the quality detection of cigarette capsules, a quality detection system of cigarette capsules is designed and constructed, which integrates the functions of feeding transmission, machine vision image processing and rejection of unqualified products. Methods: In the detection system, the improved inter class variance method was used to extract the single shot image, and the automatic detection of shot quality was realized by gray …
Study On Oxidation Stability And Shelf Life Of Oleogel,
2021
Department of Food and Biological Science, College of Agriculture, Yanbian University, Yanji, Jilin 133002, China
Study On Oxidation Stability And Shelf Life Of Oleogel, Liu Long-Long, Wang Jia-Bin, Chen Zhi-Tong, Zhao Yue-Ying, Zhang Hua, Cui Ming-Xun
Food and Machinery
Objective: To solve the problem of easily oxidized and high content of trans fatty acid the vegetable oil instead of solid fat. Methods: Soybean oil and rapeseed oil gels were prepared using sitosterol/soybean phospholipid as gel agent to replace solid fat. The oxidation stability was studied by the changes of primary oxidation products and fatty acid composition. The structural stability was observed by X-ray diffraction, and the shelf life was predicted by OXITEST method. Results: The contents of primary and secondary oxidation products of soybean oil gel and rapeseed oil gel were lower than those of crude oil. The oxidation …
Drying Kinetics And Quality Changes Analysis Of Cornus Officinalis Dried By Microwave Freeze-Drying,
2021
College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, Henan 471023, China
Drying Kinetics And Quality Changes Analysis Of Cornus Officinalis Dried By Microwave Freeze-Drying, Zhao Meng-Yue, Du Xu, Ren Guang-Yue, Li Lin-Lin, Liu Pan-Pan, Xu Yi-Ming, Che Xin-Zi
Food and Machinery
Objective: To study the microwave freeze-drying kinetics and product quality of Cornus officinalis. Methods: The microwave freeze-drying technology was used to analyze the drying characteristics, quality changes of total flavonoids and total phenols of Cornus officinalis under different microwave power （100, 200, 300, 400, 500 W）, and the related kinetic model was established. Results: The drying process of Cornus officinalis could be divided into two stages: rising rate and decreasing rate, and there was no obvious constant rate stage. The increase of microwave power could improve the drying rate and shorten the drying time. Data fitting showed that page model …
Preparation And Application Of Indicator Label Based On Papaver Rhoeas L. For Cold Sea Bass Freshness,
2021
School of Food Science and Health Preserving, Guangzhou City Polytechnic, Guangzhou, Guangdong 510650, China
Preparation And Application Of Indicator Label Based On Papaver Rhoeas L. For Cold Sea Bass Freshness, Zheng Yu-Xi, Jiang Jin-Jin, Jia Qiang, Dong Lei, Chen Cai-Lian
Food and Machinery
Objective: A color change indicator card for visual detection of fresh sea bass was studied. Methods: Using 1% Papaver rhoeas L. pigment as indicator and methyl cellulose gel as film-forming substrate, the label was made to study the color difference（ΔE） of the indicative label. The response of ΔE to pH was studied. Meanwhile, the content of TVB-N, TBARS, pH value, indicator label color and the linear relationship among these factors and ΔE under 4 ℃ sea bass preservation were determined. Results: The results showed that the indicator label had good discoloration effect in the range of pH 2.0~9.0. The TVB-N …
Real Time Detection Method Of Fruit Defects Based On Deep Learning,
2021
Guangdong Vocational Institute of Public Administration Electronic Information System, Guangzhou, Guangdong 510800, China
Real Time Detection Method Of Fruit Defects Based On Deep Learning, Zhou Sheng-An, Huang Geng-Sheng, Zhang Yi-Yun, Gao Dong-Fa
Food and Machinery
Objective: This study aimed to optimize and improve the CenterNet method for detecting fruit defects. Methods: the lightweight convolutional neural network of MobileNetV3 was used to replace the original backbone network of CenterNet accelerate the detection speed, improve the module of MobileNetV3, enhance the detection ability of the model for small and medium-sized defective blocks of fruit, and optimize the pre detection stage of CenterNet to increase its detection accuracy. Results: The recognition rate of significant defects such as apples with diameter > 4 mm was 99.7%, and the detection speed was 113 FPS, with the model volume of 1.31 MB. …
Simulation Analysis Of Tobacco Leaf Redrying And Drying Process Based On Comsol,
2021
Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming, Yunan 650500, China
Simulation Analysis Of Tobacco Leaf Redrying And Drying Process Based On Comsol, Qin Ji-Wei, Wang Li-Hua, Jiang Wei, Wang Jiong-Li, Jia Tong-Peng
Food and Machinery
Objective: To study the drying shrinkage mechanism of tobacco leaves during the redrying process. Methods: Based on the theory of porous media and elasticity, combined with Fourier's law and Fick's law, the numerical simulation of the thermal expansion, hygroscopic expansion and temperature coupling process in the tobacco leaf drying process was realized. Results: During the redrying process, the maximum stress occurred when the tobacco leaves were dried for about 3 minutes. The moisture stress during the drying process was much greater than the thermal stress; During the low-temperature slow-curing process, the internal moisture evaporation rate of the tobacco leaves was …
Optimization For Preparation Of Collagen Peptide With Hyaluronidase Inhibition Activity By Response Surface Method,
2021
College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, Tokyo 1080075, Japan; National Experimental Teaching Demonstration Center for Food Science and Engineering 〔Shanghai Ocean University〕, Shanghai 201306, China
Optimization For Preparation Of Collagen Peptide With Hyaluronidase Inhibition Activity By Response Surface Method, Han Qiu-Yu, Ishizaki Shioichiro, Bao Bin
Food and Machinery
Objective: The extraction process of collagen peptides from the skin of swordfish （Xiphias gladius） was optimized in order to efficiently obtain collagen peptides with hyaluronidase inhibition activity by single factor and response surface method. Methods: The response surface method was used to optimize the preparation of collagen peptide with hyaluronidase inhibition activity. In this paper, the enzyme-soluble collagen was extracted from swordfish skin by pepsin, and then the salting-out method was carried out to purify the collagen initially. The specie of collagen was identified by polyacrylamide gel chromatography with 7.5% separation gel. After the basic test carried out by single-factor …
Antibacterial Activity And Stability Of Polygonum Chinense Linn Extracts On The Staphylococcus Aureus,
2021
College of Basic Medical Sciences, Zunyi Medical University, Zunyi, Guizhou 563000, China
Antibacterial Activity And Stability Of Polygonum Chinense Linn Extracts On The Staphylococcus Aureus, Yang Ai-Hua, Song Shan-Shan, Wang Wei-Wei
Food and Machinery
Objective: To study the antibacterial activity and stability of Polygonum chinense Linn extracts against standard strains of Staphylococcus aureus in vitro. Methods: The antibacterial activity of Polygonum chinense Linn extracts on the Staphylococcus aureus were determined by oxford cup test and microdilution broth method. The OD600 nm value of S. aureus was used as an index, and the influence of pH, temperature, ultraviolet radiation and metal ions on its stability was explored. Results: The results showed that Polygonum chinense Linn extracts had certain inhibitory activity on Staphylococcus aureus, and the minimum inhibitory concentration was 8 mg/mL. In addition, Polygonum …
Hypoglycemic Effect Of Perilla Leaf Extract On Type 1 Diabetic Mice,
2021
School of Pharmacy, Yanbian University, Yanji, Jilin 133000, China
Hypoglycemic Effect Of Perilla Leaf Extract On Type 1 Diabetic Mice, Qi Xin, Lu Xin-Tong, Lin Chang-Qing, Cui Cheng-Bi
Food and Machinery
Objective: This study focuses on exploring the effect of perilla leaf extract on hypoglycemic in type 1 diabetic mice. Methods: Streptozotocin （STZ） was used to induce the establishment of type 1 diabetes （T1DM） mouse model, and then the normal group, model group, perilla leaf extract high-dose group （400 mg/kg）, perilla leaf extract low-dose group （200 mg/kg）, positive group （150 mg/kg） were investigated. During the test, the food intake and water consumption of the mice were recorded, and the fasting blood glucose （FBG） of T1DM mice was measured every week, and the glucose tolerance level （OGTT） was measured on the 28th …
Effect Of Biotransformation On Volatile Components Of Siraitia Grosvenorii Extract,
2021
China Tobacco Hubei Industrial Co., Ltd., Wuhan, Hubei 430040, China
Effect Of Biotransformation On Volatile Components Of Siraitia Grosvenorii Extract, Wei Min, Song Xu-Yan, Li Ran, Rong Ling, Dong Ai-Jun, Pan Xi
Food and Machinery
Objective: In order to study the effect of biotransformation of aroma producing bacteria on volatile components of Siraitia grosvenorii extract. Methods: Raoultella planticola VP4-4 was used to biotransform the extract of Siraitia grosvenorii, and the volatile component of Siraitia grosvenorii before and after fermentation were analyzed by simultaneous distillation extraction and gas chromatography-mass spectrometry（GC-MS）. Results: The main aroma components or aroma precursors in the fermentation products of Siraitia grosvenorii were hexadecanoic acid, （z）-6-octad ecenoic acid, （z,z）-9,12-octadecadienoic acid，methyl-Butanoic acid, hexanoic acid, （Z）-9-Octadecenoic acid ethyl ester, hexadecanoic acid ethyl ester, benzeneacetaldehyde, 5-methyl-2-furancarboxaldehyde, benzaldehyde, nonanal, 2-furanmethanol, Ethenyl-2-methoxy-phenol, etc. In addition, vanillin with strong …
Research On Extraction Technology Of Ampelopsis Grossedentata Polysaccharide By Ultrasound-Assisted Enzymatic Method,
2021
Key Laboratory of Hunan Forest Products and Chemical Industry Engineering, Jishou University, Zhangjiajie, Hunan 427000, China; Institute of Food Science, Jishou University, Jishou, Hunan 416000, China
Research On Extraction Technology Of Ampelopsis Grossedentata Polysaccharide By Ultrasound-Assisted Enzymatic Method, Wang Xiao-Hui, Yao Mao-Jun, Chen Yi-Jun, Zhu Lu-Yi, Huang Xiang-Yu
Food and Machinery
Objiective: In order to improve the extraction efficiency of polysaccharide from Ampelopsis grossedentata. Methods: Ultrasound-assisted enzymatic extraction method was used in this study to optimize the extraction process of polysaccharide from Ampelopsis grossedentata. The effects of ultrasound temperature, ultrasound extraction time, enzymolysis pH, ultrasound power and the addition of complex enzyme on the extraction efficiency of polysaccharide from Ampelopsis grossedentata were investigated by single factor test. And the significant factors, including enzymolysis pH, ultrasonic power and he addition of complex enzyme were by Plackett-Burman test. The optimal extraction conditions were obtained through the steepest climbing test and Box-Behnken test. Results: …
Study On Production Process Optimization Of Bread Containing Whole Wheat Flour,
2021
College of Ocean Food and Biological Engineering, Jimei University, Xiamen, Fujian 361021, China; Key Laboratory of Food Microbiology and Enzyme Engineering Technology of Fujian Province, Xiamen, Fujian 361021, China; Research Center of Food Biotechnology of Xiamen City, Xiamen, Fujian 361021, China
Study On Production Process Optimization Of Bread Containing Whole Wheat Flour, Chen Yan-Hong, Zheng Sheng-Lan, Li Hui-Xue, Li Li-Jun, Ni Hui
Food and Machinery
Objective: This study aimed to improve the hard texture and rough taste caused by the addition of whole wheat in the baking food. Methods: The effects of instant tea powder, whole wheat flour, baking time and β-glucoside on the quality of whole wheat flour bread were investigated with texture characteristics and sensory evaluation as indicators. Results: The results showed that there was no significant effect on the texture properties and sensory score of wheat flour bread when the volume of addition of instant tea powder was within 3%, andit was negative when the volume reached 4%. Meanwhile, whole wheat flour, …
Auxiliary Hypolipidemic Effect Of Compound Kelp Meal Substitute Powder,
2021
School of Pharmacy, Hubei University of Traditional Chinese Medicine, Wuhan, Hubei 430065, China
Auxiliary Hypolipidemic Effect Of Compound Kelp Meal Substitute Powder, Zhang Li, Nie Shi-Ming, Chen Yun-Zhong, Yan Chun-Chao
Food and Machinery
Objective: The hyperlipidemia rat model was established to study the hypolipidemic effect of compound kelp meal substitute powder rich in dietary fiber and unsaturated fatty acids. Methods: Male SD rats were divided into blank control group, model control group and high, medium and low dose groups: 6.58, 3.29 and 1.65 g/kg (equivalent to 10, 5 and 2.5 times of the recommended dose of human body respectively). The blank control group was fed with basic diet, and the other groups were fed with high-fat diet, and the three dose groups were given the corresponding concentration of compound kelp powder suspension by …
Detection Of Mixing Proportion Of Stem By Near Infrared Spectroscopy Combined With Linear Non-Negative Regression Coefficient Regression Method,
2021
Yunnan Tongchuang Detecting Technique Co., Ltd., Kunming, Yunnan 650106, China
Detection Of Mixing Proportion Of Stem By Near Infrared Spectroscopy Combined With Linear Non-Negative Regression Coefficient Regression Method, Liu Jing, Hu Jian-Xi, Yang Fang-Fang, Gao Hui, Yang Pan-Pan
Food and Machinery
Objective: To establish a rapid method for the determination of stem content in finished tobacco by near infrared spectroscopy. Methods: The finished tobacco mixed with different proportion of stem silk （5%, 8%, 11% and 14%） was used as the test object. The near infrared spectrum information of pure stem silk, pure leaf silk and tobacco mixed with different proportion of stem silk was collected, respectively. Orthogonal Partial Least Squares Discrimination Analysis （OPLS-DA） was used to identify the overall difference of the near infrared spectral information of the above three kinds of samples. Variable Importance for the Projection （VIP） feature spectrum …
Evaluation Of Cigarette Quality Stability Based On Similarity Analysis Of Smoke Components,
2021
Technical Center, Shanghai Tobacco Group Co., Ltd., Shanghai 201315, China
Evaluation Of Cigarette Quality Stability Based On Similarity Analysis Of Smoke Components, Zhang Wei, Yu Qi-Chang, Qi Da-Wei, Zhou Yan, Wu Da, Lu Jie
Food and Machinery
Objective: The evaluation methods of cigarette quality stability based on different indexes are compared, which provides a theoretical basis for the selection of evaluation indexes of cigarette product quality stability. Methods: Used the heart-cutting two-dimensional gas chromatography （HC-2D-GC） to analyze the key components in cigarette smoke components. The fingerprint of qualified products was established, and the stability of cigarette product produced in different places within three years was evaluated by Euclidean distance similarity. The results were compared with the method based on the conventional parameters of cigarette smoke. Results: The smoke stability evaluation method based on the conventional smoke gas …
