Effects Of Three Media On The Isolation Of Two Kinds Of Antimicrobial-Resistant Bacteria From Chicken Products,
2023
Institute for Agri-food Standards and Testing Technology, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
Effects Of Three Media On The Isolation Of Two Kinds Of Antimicrobial-Resistant Bacteria From Chicken Products, Huang Liujuan, Fan Yanli, Zhong Hai, Jiang Jing, Shao Yi
Food and Machinery
Objective: To evaluate the isolation effects of different media on antimicrobial risistant （ART） bacteria flora from the surface of cold fresh and cooked chicken products. Methods: Based on high-throughput sequencing technology, the flora structure and abundance of tetracycline-resistant （Tr） and sulfamethazole-resistant （Sr） bacteria isolated by brain heart infusion （BHI）, tryptic soy agar （TSA） and plate count agar （PCA） media was comparatively analyzed. Results: Among the 101 genera of ART bacteria from cold fresh chicken samples, 30, 5 and 3 genera of Tr bacteria were isolated only on BHI, TSA and PCA media respectively, while the …
Simulation Analysis Of Flow Channel Of Different Twin-Screw Extruder With Different Groove Depth,
2023
School of Artificial Intelligence, Being Technology and Business University, Beijing 100048, China;Plastic Beijing Municipal Key Laboratory of Health and Safety Quality Evaluation Technology, Beijing 100048, China
Simulation Analysis Of Flow Channel Of Different Twin-Screw Extruder With Different Groove Depth, Zhang Yiming, Huang Zhigang, Yang Yanan
Food and Machinery
Objective: The flow channel distribution of polylactic acid （PLA） in different groove depths of a double screw extruder was discussed. Methods: Three kinds of screw elements with different depth of screw groove and their corresponding flow channel models were established by Solidworks software. Polyflow fluid simulation software was used for numerical simulation, and FieldView software was used for numerical analysis of post-processing results. The pressure field, shear rate field, viscosity field and residence time distribution curve （RTD） of polylactic acid （PLA） in three different screw extruders with different groove depths were studied. Results: The depth of the screw groove was …
Changes Of Peptides And Amino Acids In Acetes Chinensis Before And After Autolysis,
2023
College of Food, Shanghai Ocean University, Shanghai 201306, China
Changes Of Peptides And Amino Acids In Acetes Chinensis Before And After Autolysis, Zhu Baohua, Li Xiaohui, Yang Zhiyan, Hui Tingting, Xu Chenchen, Li Yan
Food and Machinery
Objective: This study aimed to explore the changes of polypeptides and free amino acids in Acetes chinensis before and after autolysis. Methods: The optimal pH and temperature of the endogenous protease of the A. chinensis were determined and the autolysis conditions were optimized. Then changes of a polypeptide, amino acid and molecular weight in the product before and after autolysis were studied under the optimal conditions. Results: The optimum temperature and pH of endogenous protease were 45 ℃ and 8.0 respectively. Under the optimal autolysis conditions of pH 8.0, temperature 40 ℃, and reaction time 4 h, the polypeptide concentration …
Effects Of Different Modes Of Ultrasonic Assisted Low-Temperature Curing On Beef Quality,
2023
School of Food and Bioengineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
Effects Of Different Modes Of Ultrasonic Assisted Low-Temperature Curing On Beef Quality, Wu Mengdi, Ma Haile, Liu Huimin
Food and Machinery
Objective: This study aimed to discover a green, fast curing method for the domestic refrigerator freezer. Methods: Under the control of low-temperature condition, different frequency combination of ultrasonic assisted curing beef was used to study its effect on beef quality. Results: Compared with low-temperature static curing, simultaneous ultrasonic 22+40 kHz (SIU 22+40 kHz) had the best curing effect, and the salt content (0.327 4%) was increased by 74.15% (P＜0.05), with the cooking loss (34.933%) reduced by 11.45% (P＜0.05). The hardness (293.545 N) was reduced by 18.39% (P＜0.05), and the resilience (1.436N/mm2) was …
Study On Optimizing Technology And Physicochemical Properties Of Coix Bran Dietary Fiber Prepared By Enzymatic Method,
2023
Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, Guangdong 524001, China;Qianxinan Institution Inspection and Testing Center, Xingyi, Guizhou 562400, China
Study On Optimizing Technology And Physicochemical Properties Of Coix Bran Dietary Fiber Prepared By Enzymatic Method, Lin Tinglong, Zou Lan, Pan Xiaowei, Liu Yuanjing
Food and Machinery
Objective: The study aimed to optimize the preparation process and investigate the quality of coix bran dietary fiber. Methods: The coix bran was used as raw material; the effects of solid-liquid ratio, the amount of amylase and alcalase on the extraction rate were analyzed by usingorthogonal experiments. The chemical composition and physicochemical properties of the dietary fiber obtained under the optimal preparation conditions was analyzed. Results: The optimal extraction parameters of dietary fiber were as follows: solid-liquid ratio was 1∶10 (g/mL), the amount of amylase and alcalase was 100 U/g, respectively, and the extraction rate was up to 84.39%. The …
Research Progress On Innovative Processing Technologies And Changes In Physicochemical Properties During The Pickling Of Pidan,
2023
College of Biological Science and Engineering, Fuzhou University, Fuzhou, Fujian 350108, China
Research Progress On Innovative Processing Technologies And Changes In Physicochemical Properties During The Pickling Of Pidan, Cheng Jing, Li Lichan, Wang Shaoyun, Yu Liyang, Yu Jie, Cai Xixi
Food and Machinery
In view of the limitations of the traditional processing technology of Pidan, this review summarizes the innovative processing technologies of Pidan, such as gradient temperature control, ultrasonic assisted, vacuum decompression, pulsating pressure, etc., and describes the changes of water, pH value, protein, free amino acids, texture, mineral elements and micro-morphology during the picking process of Pidan. Moreover, the development directions of Pidan products are prospected.
Functional Characteristics And Comprehensive Utilization Of Lonicerae Flos Resources,
2023
College of Humanities and Management, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China
Functional Characteristics And Comprehensive Utilization Of Lonicerae Flos Resources, Liu Ping, Jia Fan, Hu Xiang, Xu Yao, Yang Yong
Food and Machinery
Lonicerae Flos is a Chinese medicinal material and medical-food homologous resource. It has a variety of pharmacological and health functions such as anti-oxidation, immune regulation, anti-inflammation and antibacterial. Based on the introduction of research process in the history of application, functional components and pharmacological activity of Lonicerae Flos resources, this review summarizes the current situation of comprehensive utilization of Lonicerae Flos and its by-product, and deeply discusses the comprehensive utilization of high-value of these resources from the perspectives of drugs, food, cosmetics, veterinary medicine feed and agricultural inputs. Finally, the comprehensive utilization of the Lonicerae Flos resources and the sustainable …
Studying On The Hypoglycemic Activity Of Green Tea Polyphenols From Camellia Ptilophylla Chang Using High-Resolution Mass Spectrometry And Network Pharmacology,
2023
College of Food Science, South China Agricultural University, Guangzhou, Guangdong 510642, China
Studying On The Hypoglycemic Activity Of Green Tea Polyphenols From Camellia Ptilophylla Chang Using High-Resolution Mass Spectrometry And Network Pharmacology, Huang Qiuyan, Li Bin, Lin Xiaorong, Lu Sen, Chen Zhongzheng, Zhang Yuanyuan
Food and Machinery
Objective: This study aimed to explore the composition and the functional bioactivity of tea polyphenols from cocoa tea. Methods: Chemical components of crude green tea polyphenol extracts from cocoa tea were analyzed and identified using high resolution mass spectrometry. Additionally, their potential functional effects were predicted by network pharmacological analysis. Results: The in vitro hyperglycemic potential of crude green tea polyphenol from cocoa tea was preliminarily confirmed based on their strong inhibition on α-glucosidase and α-amylase. Six key targets including GAPDH and AKT and multiple pathways such as PI3K-AKT were predicted to be involved in the underying mechanisms behind the …
Changes Of Chemical Components Of Tibetan Tea During Pile Fermentation Process,
2023
Institute of Agro-products Processing Science and Technology, Sichuan Academy of Agricultural Sciences, Chengdu, Sichuan 610066, China
Changes Of Chemical Components Of Tibetan Tea During Pile Fermentation Process, Deng Junlin, He Yanghang, Chen Jian, Liu Gang, Xia Chen
Food and Machinery
Objective: The changes in the main chemical components in water extracts of Tibetan tea during the pile fermentation process were investigated. Methods: Research was done on tea samples and water extracts from various fermentation stages of Tibetan tea. Soluble solids, soluble sugars, total polyphenols, total flavonoids, and in vitro antioxidant activity (ABTS and DPPH) were all examined. Additionally, ultra-performance liquid chromatography (UPLC) was used to find theophylline, caffeine, gallic acid (GA), and 8 catechins monomers. By using enzyme-linked immunoassay, the amount of theaflavin, thearubigin, and theabrownin were determined. Results: The soluble solids in Tibetan tea reduced and then slightly increased …
Evaluation Of The Performance Of Enrofloxacin In The Detection Of Egg By Quantum Dot Microsphere Immunochromatography Strip,
2023
Jiangxi Agricultural Product Quality Safety and Inspection Center, Nanchang, Jiangxi 330077, China
Evaluation Of The Performance Of Enrofloxacin In The Detection Of Egg By Quantum Dot Microsphere Immunochromatography Strip, Zhang Fusheng, Wang Yuchen, Lu Lisheng, Deng Jiajun, Chen Junsong, Yang Linfen, Guo Jing, Wu Renwei, Lai Weihua
Food and Machinery
Objective: This study aimed to realize rapid on-site screening of enrofloxacin in eggs. Methods: According to the requirements of the “Maximum residue limit of 41 veterinary drugs in the national food safety standard” and the “Opinions on regulating the use of rapid food testing” issued by the State Market Supervision and Administration in January 2023, the spiked samples at three concentration levels of enrofloxacin were prepared. Fifty blank samples and fifty spiked samples at a concentration level of 0.5 time the standard limit requirement (5 μg/kg) were used to evaluate the false positive rate of the rapid detection method. Fifty …
A Fluorescence Elisa Based On Dsdna-Cuncs For The Detection Of E. Coli O157:H7 In Milk,
2023
College of Food Science, Nanchang University, Nanchang, Jiangxi 330047, China
A Fluorescence Elisa Based On Dsdna-Cuncs For The Detection Of E. Coli O157:H7 In Milk, Cao Wenkai, Shan Shan, Liu Daofeng, Peng Juan, Xing Keyu, Lai Weihua
Food and Machinery
Objective: This study aimed to developed a novel fluorescent enzyme-linked immunosorbent assay method for the sensitive detection of E. coli O157:H7 in milk samples. Methods: The pyrophosphate-Cu2+ coordination complex was hydrolyzed by alkaline phosphatase, and Cu2+ was released from copper nanoclusters as signal reporting probes. Key factors such as Cu2+ concentration, pyrophosphate concentration, and DNA template concentration and length were optimized. Results: Under the control of the optimized conditions, the method exhibited a good linear relationship (R2=0.980 8) with the target E. coli O157:H7 in the range of 5×104~1×108 CFU/mL. The …
Determination Of Acrylamide In Fried Foods By High Performance Liquid Chromatography Based On Quechers,
2023
Meizhou Institute for Food and Drug Control, Meizhou, Guangdong 514071, China
Determination Of Acrylamide In Fried Foods By High Performance Liquid Chromatography Based On Quechers, Dong Wenjing, Dai Jinbo, Nie Rongrong, Shen Jie, Ye Caiping, Cai Zhitao
Food and Machinery
Objective: This study aimed to popularize the detection capability of acrylamide in fried foods and optimize the pre-treatment process and the reliance on expensive instruments. Methods: The acrylamide in fried foods were extracted by methanol as extraction solvent and used C18 and Z-Sep+ as clean up materials. Then separated it with C18 liquid chromatography column by using water as mobile phase for isocratic elution and detected at wavelength 197 nm. Results: This method showed a good linearity (R2>0.999) of acrylamide in the range of 0.1～2.0 mg/L and the limits of detection was 0.007 mg/kg. …
Determination Of Zn2+ Cd2+ Pb2+ In Food Base On Bi-Co-Btc Electrochemical Sensor,
2023
Fujian Polytechnic Normal University, Fujian Province-Indonesia Marine Food Joint Research and Development Center, Fuzhou, Fujian 350300, China;Fujian Provincial Key Lab of Coastal Basin Environment, Fuzhou, Fujian 350300, China
Determination Of Zn2+ Cd2+ Pb2+ In Food Base On Bi-Co-Btc Electrochemical Sensor, Ding Kewu, Dai Lili, Huang Dihui, Sun Zhongwei, Ye Ruihong
Food and Machinery
Objective: This study focused on the preparation of a new electrochemical sensor for detection of heavy metal content in food. Methods: In this study, a new type of bismuth-based metal-organic framework was prepared by hydrothermal method. 1,3,5-benzenetricarboxylic acid （H3BTC） was used as a ligand, which supplemented by bismuth nitrate pentahydrate [Bi（NO3）3 5H2O] and cobalt nitrate hexahydrate [Co（NO3）2·6H2O] metal salts to prepare novel bismuth-based metal-organic frameworks. Bi-based metal-organic framework composites supported by multi-walled carbon nanotubes were prepared by ultrasonic self-assembly. The surface of glassy carbon electrode （GCE） was …
Determination Of Rutin, Hyperoside, Quercetin In Xiang Lotus By Hplc,
2023
Changsha Institute for Food and Drug Control, Changsha, Hunan 410008, China
Determination Of Rutin, Hyperoside, Quercetin In Xiang Lotus By Hplc, Zhong Feifei, Li Jing, Lei Deqing, Yang Yun, Wu Jianfang, Ouyang Li
Food and Machinery
Objective: To establish a HPLC method for simultaneous determination of rutin, hyperoside, quercetin in Xiang lotus. Methods: The HPLC method was performed on an Agilent ZORBAX SB-C18 column (4.6 mm×250 mm, 5 m) with gradient elution of methanol and 0.6% phosphoric acid solution. The flow rate was 1.0 mL/min. The column temperature was 30 ℃ and the detection wavelength was set at 255 nm. Results: The contents of rutin, hypericin and quercetin in 20 batches of lotus samples were 1.32～2.06, 1.36～2.43, 1.41～3.26 mg/kg, respectively. The linear range of the concentration of rutin, hypericin and quercetin was 5～200 g/mL ( …
A Study On The Application Of Non-Prosecution Of Criminal Compliance By Food Production And Operation Enterprises,
2023
School of Social Sciences， Xinyang University， Xinyang， Henan 464000, China
A Study On The Application Of Non-Prosecution Of Criminal Compliance By Food Production And Operation Enterprises, Cai Kunpeng
Food and Machinery
With the current criminal compliance pilot, how to apply it correctly in the field of food safety is a new research direction. Starting from the criminal behavior of substantive law, this paper probes into the rationality of applying compliance non-prosecution in food production and operation enterprises, and through the analysis of the application of criminal compliance non-prosecution, puts forward the measures for applying the system in the field of food safety.
Prediction Method Of Fragrant Pear Weight Based On Kinect Camera,
2023
College of Information Engineering, Tarim University, Alar, Xinjiang 843300, China
Prediction Method Of Fragrant Pear Weight Based On Kinect Camera, Zhang Runzhi, Zhang Xiao, Wu Gang
Food and Machinery
Objective: Aiming to obtain the weight of fragrant pear quickly to provide a basis for developing the fragrant pear grading device. Methods: This method acquired RGB-D images of fragrant pear by Kinect camera and converted them into point cloud data. The point cloud data was pre-processed and interpolated to generate a fragrant pear model. Then calculated the size parameter of the fragrant pear model. Finally, using the fragrant pear's volume predicted its weight. Results: Experimental results showed that the average relative error of the volume was 2.8%. Then the volume of fragrant pears was calculated by the error-compensated measurement method …
Fruit Classification System Based On The Pressure Sensor Coupled With Support Vector Machine,
2023
Puyang Medical College, Puyang, Henan 457000, China
Fruit Classification System Based On The Pressure Sensor Coupled With Support Vector Machine, Wang Feifei, Liu Peng, Sun Fengwei, Zhou Qiong
Food and Machinery
Objective: To improve fruit classification accuracy while considering low computational cost and low sensor cost. Methods: A fruit classification system based on capacitive pressure sensor was proposed. The system used support vector machine algorithm with a Gaussian kernel function (GKF-SVM) to classify fruits. The capacitive pressure sensors used were made of thin copper sheets and a layer of vinyl acetate, and these sensors were fixed to the thumb and index finger of a polyamide spandex glove that simulates a robotic hand. The obtained capacitance value was expressed in the form of digital level, and the data was extracted by data …
Identification Method Of Canned Food For Production Line Sorting Robot Based On Improved Pso-Svm,
2023
Jinzhong Vocational & Technical College, Jinzhong, Shanxi 030600, China
Identification Method Of Canned Food For Production Line Sorting Robot Based On Improved Pso-Svm, Gao Haiyan, Gao Jinyang, Wang Weicheng
Food and Machinery
Objective: To solve the problems of poor accuracy and low efficiency in target recognition methods for existing sorting robots in food production lines. Methods: On the basis of the analysis of the binocular vision food sorting system, a combination of improved particle swarm optimization algorithm and support vector machine was proposed for target recognition of food sorting robots. By improving the particle swarm optimization algorithm to optimize support vector machine parameters, an optimized support vector machine classification model was obtained. The classifier was trained for both global and local features, and feature weight coefficients were dynamically assigned to obtain the …
Design Of Spherical Fruit Packing Machine Based On Ahp/Ad/Triz,
2023
College of Mechanical Engineering, Suzhou Vocational University, Suzhou, Jiangsu 215104, China
Design Of Spherical Fruit Packing Machine Based On Ahp/Ad/Triz, Zuo Bin, Wang Renzhong, Wang Min
Food and Machinery
Objective： The paper aims to solve the large amount of packing for spherical fruit packing with unstable and unshapen with foam. Methods： A product design method based on AHP, AD and TRIZ integration was proposed in view of user demands. The weight and ranking of customer demands was obtained through AHP, the high-weights of design elements was converted to functional requirement. Then, the mapping between functional domain and physical domain of design elements was completed by means of AD axiomatic design. The design parameter sets of bevel gear packaging mechanism, spiral auxiliary mechanism, cutter mechanism and tension control mechanism were …
Research On Intelligent Real-Time Identification System Of Traffic Signs Based On Improved Recurrent Neural Network Algorithm,
2023
Huanghe Jiaotong University, Jiaozuo, Henan 454950, China
Research On Intelligent Real-Time Identification System Of Traffic Signs Based On Improved Recurrent Neural Network Algorithm, Wang Shaoying
Food and Machinery
Objective： In order to meet the needs of the edge computing of the Internet of Things, a recurrent neural network algorithm was introduced for the first time in this paper, and an intelligent real-time classification and recognition system was constructed to conduct research on food packaging images. Methods： To build a simulation experiment test model, firstly preprocessed the image data set, de-redundantize, grayscale, and normalized the two-dimensional image, and finally input the time-sequential data in parallel. Using a typical memristor as the research object of realizing hardware RNN, the nonlinear function of memristor was used to construct the mapping layer …
