Determination Of 10-Hydroxy-2-Decenoic Acid In Honey By Ultra High-Performance Liquid Chromatography-Tandem Mass Spectrometry,
2021
Changsha Institute for Food and Drug Control, National Centre of Quality Supervision and Testing of Alcoholic Products， Changsha, Hunan 410006, China
Determination Of 10-Hydroxy-2-Decenoic Acid In Honey By Ultra High-Performance Liquid Chromatography-Tandem Mass Spectrometry, Hu Li-Li, Li Ying, Wang Hui, Pi Lu-Lu, Chen Xian-Gui, Jiang Li
Food and Machinery
Objective: This study aimed to establish a method using ultra-high-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) to determine 10-hydroxy-2-decenoic acid in honey. Methods: The samples were extracted with methanol-water and cleaned up by a PLS solid-phase extraction column. The separation was performed on an Agilent ZOXBAR SB-C18 column (2.1 mm×50 mm, 1.8 μm) and methanol -5 mmol/L ammonium acetate solution was used as the mobile phase for gradient elution. Mass spectrometry was carried out under the multiple reaction monitoring (MRM) mode with negative electrospray ionization (ESI-) and standard external method for quantitative analysis. Results: Good linearity of the developed analytical method …
Simultaneous Rapid Determination Of 18 Quinolones Residues In Raw Milk By Liquid-Liquid Extraction And Ultra Performance Liquid Chromatography Tandem Mass Spectrometry,
2021
Changsha Environmental Protection College， Changsha， Hunan 410111， China
Simultaneous Rapid Determination Of 18 Quinolones Residues In Raw Milk By Liquid-Liquid Extraction And Ultra Performance Liquid Chromatography Tandem Mass Spectrometry, Zhou Yan-Hua, Li Tao, Pan Xiao-Hong, Xiang Jun
Food and Machinery
Objective: A rapid method for simultaneous determination of 18 quinolones residues in raw milk was established. Methods: The raw milk was pretreated by liquid-liquid extraction, and the residues of 18 quinolones in raw milk were analyzed by ultra-performance liquid chromatography-tandem mass spectrometry. Results: The linearity of all the 18 quinolones from 2.0 to 100.0 ng/mL had correlation coefficients greater than 0.992. The limits of detection (LOD) of this method ranged from 0.02 to 0.50 μg/kg, and the limits of quantification (LOQ) were 0.06 to 1.50 μg/kg. The average recoveries of the 18 quinolones were 74.0% to 106.5%, with the relative …
International Experience And Enlightenment Of Food Safety Emergency Management System Construction—Based On The Investigation Of The United States And The European Union,
2021
People's Public Security University of China, Beijing 100038, China
International Experience And Enlightenment Of Food Safety Emergency Management System Construction—Based On The Investigation Of The United States And The European Union, Meng Qiang, Cai Wen-Jing, Liu Mu-Yun
Food and Machinery
It was systematically investigated and sorted out the construction of management systems for food safety emergencies in the United States and the European Union, and their legal and regulatory systems, organizational systems, and operational mechanism systems were analyzed to provide valuable references for the construction of management systems for food safety in China.
Fast Identification Of Milk Powder Brand Based On Low Field Nuclear Magnetic Resonance Technology,
2021
School of Food and Chemical Engineering, Shaoyang University, Shaoyang, Hunan 422000, China
Fast Identification Of Milk Powder Brand Based On Low Field Nuclear Magnetic Resonance Technology, Yang Li, Xia A-Lin, Zhang Yu
Food and Machinery
Objective: 270 milk powder samples from 6 different brands were detected and distinguished by low field nuclear magnetic resonance combined with chemometrics. Methods: Three chemometrics methods of principal component analysis (PCA), partial least squares discriminant analysis (PLS-DA) and backpropagation artificial neural network (BP-ANN) were used to process experimental data of samples statistically. Results: The PCA method based on three-dimensional projection could not achieve the purpose of rapid identification of milk powder brand; the correct recognition rates of training and prediction sets were 66.1% and 52.2% for the PLS-DA method, respectively, which was low in credibility and challenging to realize the …
Simulation Analysis On Mechanical Properties Of Macadamia Nut Peeler Roll,
2021
School of Tropical Crops, Yunnan Agricultural University, Pu'er, Yunnan 665000, China
Simulation Analysis On Mechanical Properties Of Macadamia Nut Peeler Roll, Jiang Kuai-Le, Chen Zhi-Hua, Li Ya-Nan, Tan Xian-Chao
Food and Machinery
Objective: To analyze the structural strength and vibration characteristics of the peeling roller, the key component of the macadamia nut peeling machine, and determine its working parameters. Methods: The established Solidworks model of the peeling roller was imported into Ansys for static analysis and modal simulation. Results: When the working speed of the peeling roll was 861.4 r/min, its maximum deformation was 0.032 08 mm, and the equivalent stress was 11.872 MPa. The maximum equivalent stress under normal working conditions was far less than the yield strength of the material. The first six natural frequencies of the roller were 111.44, …
Visual Servo Control Method Of Food Sorting Robot Based On Improved Bp Neural Network,
2021
Chongqing City Vocational College, Chongqing 402160, China
Visual Servo Control Method Of Food Sorting Robot Based On Improved Bp Neural Network, Yu Xiao-Lan, Wan Yun, Chen Jing-Zhao
Food and Machinery
Objective: To solve the problems of complex structure and large calculation amount of the visual servo control system of the current food sorting robot, which unable to meet the flexibility and adaptability of the sorting robot to the visual servo control system. Methods: Based on the structure of robot visual servo control system, a visual servo control method of food sorting robot based on improved particle swarm optimization algorithm and BP neural network was proposed. The particle swarm algorithm used crossover and mutation in the iterative process to maintain population diversity, the initial weight and threshold of BP neural network …
Research On Legal Risk And Avoidance In Factoring Business Of Food Machinery And Equipment Export,
2021
Hunan University of Information Technology International School of Business, Changsha, Hunan 410151, China
Research On Legal Risk And Avoidance In Factoring Business Of Food Machinery And Equipment Export, Chen Jian
Food and Machinery
In order to control risks and speed up capital turnover, enterprises begin to gradually use export factoring business. However, in the export factoring business, it is faced with problems such as contract disputes, relevant policies of importing countries, application of laws and so on, and this makes the recovery of enterprise accounting receivable problematic and resulting in enterprise losses. In this study, the methods to avoid the legal risks of export factoring business were put forward from three aspects, including the signing of prior contracts for the export of food machinery and equipment and the understanding of the policies of …
Effects Of Different Technologies On Enzyme Deactivation And Storage Stability Of Wheat Germs,
2021
College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
Effects Of Different Technologies On Enzyme Deactivation And Storage Stability Of Wheat Germs, Zhang Nan, Shi Lin, Meng Ji-Kun, Ge Xin-Hui, Cheng Yong-Qiang, Zhang Xiu-Qing
Food and Machinery
Objective: To obtain the best technology and treatment conditions of wheat germs stablizaiton, three different technologies were used to treat wheat germs. Methods: Microwave, superheated steam and hot air drying were used to treat wheat germs with enzyme deactivation, and their deactivation effects on lipase and lipoxygenase in wheat germs were compared. Then, the optimal treatment conditions of each technology were selected for the determination of total number of colonies and accelerated storage test. Results: Under the optimal treatment conditions, the lipase and lipoxygenase in wheat germs could be effectively deactivated by the three treatments. The superheated steam treatment had …
Variations Of Bacterial Community Structure During Storage And Processing Of The Betelnut,
2021
School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, Hunan 410114, China
Variations Of Bacterial Community Structure During Storage And Processing Of The Betelnut, Ruan Zhi-Qiang, Deng Jian-Yang, Jiang Xue-Wei, Yao Li, Li Hao, Luo Xiao-Ming, Lu Ke-Qiang
Food and Machinery
Objective: This study focuses on ensuring qualified bacterial indicators during betelnut processing. Methods: The key processing samples from the raw material to the finished product were analyzed by the Illumina Miseq high-throughput sequencing technology. Results: The results showed that a total of 191 456 effective sequences were obtained from the 7 kinds of betelnut samples, belonging to 790 genera, 239 families. The dominant bacteria genera include Bacillus, Pseudomonas, Hydrogenophaga, Leuconostoc, and Chryseobacterium. Significant differences in the bacterial community structure was found in the betelnuts between before and after storage. The species richness in betelnuts before storage (new betelnut) was higher …
Tomato Dry Peeling Technology Based On Catalytic Infrared,
2021
School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
Tomato Dry Peeling Technology Based On Catalytic Infrared, Liu Ying, Qu Wen-Juan, Luo Sheng-Tong, Ma Hai-Le, Pan Zhong-Li, Jiang Qun-Hui
Food and Machinery
Objective: An efficient and green method of peeling tomatoes was explored. Methods: A dry peeling method of tomatoes was carried out based on catalytic infrared equipment, and the effects of technological parameters on peeling performance and pulp quality of tomatoes were investigated and compared with traditional peeling methods of hot water and lye. Results: Infrared heating distance, temperature and time all had significant effects on the peelability and pulp quality of tomatoes. The optimum technological parameters of tomato dry peeling based on catalytic infrared was infrared heating temperature of 450 ℃, distance of 25 cm and time of 5 min. …
Preparation And Process Optimization Of Coconut Oil-Based Bile Salt Liposomes,
2021
School of Food Science and Engineering, Hainan University, Haikou, Hainan 570000, China
Preparation And Process Optimization Of Coconut Oil-Based Bile Salt Liposomes, Shi Zhen-Zhen, Bai Xin-Peng, Yue Yi-Jing
Food and Machinery
Objective: this study focuses on improving the water solubility of coconut oil and expand its application in food industry. Methods: According to the characteristics of the solubility of coconut oil, soybean lecithin - deoxycholate was used as shell material with coconut-oil core to establish coconut-oil bile salt liposomes by thin film dispersion method. Response surface optimization (RSM) was carried out according to the encapsulation rate, and the effects of several factors, including soybean lecithin/deoxycholate ratio, PBS/ anhydrous ethanol ratio, sample fat ratio, ultrasonic time, hydration time and hydration temperature, on the encapsulation rate were investigated. Results: The results showed that …
The Effect Of Different Cutting Methods Of Tobacco Leaves After Redrying On Cut Tobacco After Drying,
2021
Anyang Cigarette Factory, China Tobacco Henan Industry Co., Ltd., Anyang, Henan 455004, China
The Effect Of Different Cutting Methods Of Tobacco Leaves After Redrying On Cut Tobacco After Drying, Jin Yi, Li An-Qi, Li Pei-Pei, Xing Jian-Wei, Li Wen-Wei, Li Chao
Food and Machinery
Objective: In order to study the influence of different slicing methods on the quality index of cured cut tobacco after redrying processing. Methods: The formula tobacco leaves of a certain specification were divided into 4 parts on average, and then sliced after different slicing treatments. The structure, filling value, petroleum ether extract content and total aroma components of dried cut tobacco were determined. In order to eliminate the correlation between different quality indexes, principal component analysis （PCA） was used to reduce the dimension of the quality indexes of cut tobacco. Finally, the sensory quality of cut tobacco was evaluated under …
Application Of Magnetic Covalent Organic Frameworks In Food Safety Analysis,
2021
College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350000, China
Application Of Magnetic Covalent Organic Frameworks In Food Safety Analysis, Yang Da-Yu, Chen Zi-Ying, Pang Jie, Yan Zhi-Ming
Food and Machinery
In this paper, the application of magnetic covalent organic frameworks （MCOFs） in food safety analysis is reviewed by combining with the domestic and foreign literature, and the common preparation methods of MCOFs are briefly introduced. The application examples of MCOFs in pesticide residues, veterinary drug residues, organic pollutants, toxins and harmful substances in packaging were discussed, and the practical detection application of MCOFS in the future is prospected.
Adsorption Of Caffeic Acid In Sucrose Solution By Magnetic Chitosan Modified Kaolin,
2021
College of Food and Biochemical Engineering, Guangxi Science and Technology Normal University, Laibin, Guangxi 546199, China
Adsorption Of Caffeic Acid In Sucrose Solution By Magnetic Chitosan Modified Kaolin, Pan Yan-Mei, Wu Hai-Ling, Wei Qiao-Yan, Su Long, Liu Fu-Jie
Food and Machinery
Objective: Studied the adsorption characteristics of magnetic chitosan modified kaolin on caffeic acid in simulated sugarcane juice, and provided the reference for the removal of phenolic pigments in sugarcane juice. Methods: Magnetic chitosan modified kaolin was prepared by coprecipitation of chitosan, nano ferric oxide and kaolin. The surface structure and group changes of kaolin before and after modification were characterized by FT-IR, VSM and SEM; The adsorption characteristics of caffeic acid were studied by adsorption test. Results: the modified chitosan and nano-Fe3O4 were successfully loaded on kaolin, and the adsorption performance of caffeic acid was improved. The …
Effects Of Milling Degree And Cooking Method On The Cooked Rice Quality Of High-Quality Indica Rice,
2021
College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, Hubei 430023, China
Effects Of Milling Degree And Cooking Method On The Cooked Rice Quality Of High-Quality Indica Rice, Li Liu-Yan, Zhan Zhan, Zhang Wei, Shu Zai-Xi, Wang Ping-Ping
Food and Machinery
Objective: To investigate the effects of milling degree and cooking method on cooked rice quality of high-quality Indica rice. Methods: Paddy rice （variety Longliangyou 1813） were dehulled and milled for 20, 35, and 50 s, respectively. Rice milled for different durations were cooked with electric pressure cooker and ordinary rice cooker, respectively. Quality attributes of cooked rice were compared by texture analyzer, gas chromatograph-ion mobility spectrometer （GC-IMS）, and sensory judgement. Results: For rice milled for 20 s, the cooked product of ordinary rice cooker had higher hardness than that of electric pressure cooker. However, for rice milled for 35 or …
Rapid Determination Simultaneously Of Twelve Kinds Of Nitrophenolic Compounds In Water By Modified Quechers-Gc-Ms,
2021
Gansu Zhongshang Food Quality Test and Detection Co., Ltd., Lanzhou, Gansu 730010, China;Gansu Business Science and Techology Institute Co., Ltd., Lanzhou, Gansu 730010, China
Rapid Determination Simultaneously Of Twelve Kinds Of Nitrophenolic Compounds In Water By Modified Quechers-Gc-Ms, Wu Jian-Qiang, Zhao Zhong-Jing, Hong Xia, He Hai-Ning, Yuan Cai-Xia
Food and Machinery
Objective: A simple, efficient, rapid, sensitive, reproducible, accurate and rapid method was established for the simultaneous determination of 12 nitrophenols in water. Methods: Magnetic Fe3O4 nanoparticles loaded with bifunctional octadecylamine functionalized carbon nanotube composites were synthesized by coprecipitation and hydrothermal methods. The sample pretreatment method of QuEChERS was optimized and combined with gas chromatography-mass spectrometry to establish a method for the simultaneous determination of 12 kinds of nitrophenols in water quality. Results: The optimized QuEChERS sample pretreatment method gave the advantages of magnetic nanoparticles and carbon nano materials. Under the control of these conditions, high efficiency of …
Rapid Determination Of Seven Inorganic Anions In Water By High Pressure Ion Chromatography,
2021
Guangzhou Inspection and Certification Group Co., Ltd., Guangzhou, Guangdong 510000, China;National Centre for Quality Inspection of Processed Food, Guangzhou， Guangdong 510000, China
Rapid Determination Of Seven Inorganic Anions In Water By High Pressure Ion Chromatography, Li Qian-Ying, Huang Shao-Man, Chen Jing-Zhou, Liang Zhi-Sen
Food and Machinery
Objective: To establish a method for the rapid determination of seven kinds of inorganic anions in water by high pressure ion chromatography（HPIC）, including fluoride ion, chloride ion, bromide ion, nitrate ion, sulfate ion, chlorite ion and chlorate ion. Methods: Dionex Integrion high pressure ion chromatography and Ionpac AS19 analytical column were used. Under the conditions of KOH eluent concentration of 20 mmol/L and flow rate of 2.00 mL/min, the content of seven inorganic anions in water was determined by inhibition conductivity detector. Results: The results showed that seven kinds of inorganic anions could be separated within 7 min. The linear …
Design Of Moisture-Content Detecting System For The Dried Powders Of The Fruits And Vegetables,
2021
Department of Mechanical Engineering, Tianjin University of Science and Technology, Tianjin 300222, China
Design Of Moisture-Content Detecting System For The Dried Powders Of The Fruits And Vegetables, Zhao Yong, Wu Xu-Yao, Huang Wen-Ying, Xu Hui-Li, Wu Zhong-Hua
Food and Machinery
Objective: In order to meet the demand of low water-content fruit-vegetable powder online detection, a new detection system was established. Methods: Based on the microwave transmission principle, an online moisture detection system of fruit-vegetable powder was designed. The system was divided into a feed module, a detection module, a discharge module and control display module, and the corresponding hardware and software design. Carrot powders were used as the test material, and a third-party testing institution compared the two methods, including water-content microwave transmission and national standard testing, to evaluate the test performance of the device. Results: The moisture content of …
Dual Real-Time Fluorescence Quantitative Pcr Method For The Detection Of Orange And Citrus Components In Orange Juices,
2021
Guangdong Provincial Institute of Food Inspection, Guangzhou, Guangdong 510000, China
Dual Real-Time Fluorescence Quantitative Pcr Method For The Detection Of Orange And Citrus Components In Orange Juices, Chen Yin-Yin, Li Juan, Zhou Lu, Chen Dan-Xia, Han Zhi-Jie, Ding Qing-Long
Food and Machinery
Objective: To establish a dual real-time PCR method for the detection of orange and citrus components in orange juices. Methods: Through the design and screening of primers and probes for orange and citrus components. Through the detection of fruits, found the rule of fluorescence amplification of orange and citrus. Using the ratio difference of orange and citrus in FAM/VIC two fluorescence channels to determine the composition of orange and citrus. The lowest doping ratio detected by the method was verified by the experiment of orange juice adulteration, tested the commercial orange juice and verify the feasibility of the method. Results: …
Solid-Phase Extraction And Accurate Analysis On Food Additives In Marinated Meat Products,
2021
Department of Food and Biological Engineering, Yantai University of Technology, Yantai, Shandong 264005, China
Solid-Phase Extraction And Accurate Analysis On Food Additives In Marinated Meat Products, Wang Xiao-Jun, Li Feng-Ling
Food and Machinery
Objective: To establish an accurate method for the determination of benzoic acid, sorbic acid and saccharin sodium in soy sauce brine meat products. Methods: The samples were extracted by ethyl acetate, SPE-MCX solid phase extraction, and detected by HPLC simultaneously. Results: The determination was performed on Agilent Zorbax Eclipse XDB-C18 column （250 mm×4.6 mm, 5 μm） with mobile phase consisting of 75% 0.02 mol/L ammonium acetate solution and 25% acetonitrile. The column temperature was set at 25 ℃, and the flow rate was 0.8 mL/min. The sample size was 10 μL. The detection wavelength was 230 nm. In the range …
