An Uhplc-Ms/Ms Method For Rapid Analysis Of Tea For The Potential Presence Of Illegally Added Flavorings,
2023
Guangzhou Inspection and Testing Certification Group Company Limited, Guangzhou, Guangdong 511447 , China ；National Quality Testing Center for Processed Food ﹝Guangdong﹞, Guangzhou, Guangdong 511447 , China
An Uhplc-Ms/Ms Method For Rapid Analysis Of Tea For The Potential Presence Of Illegally Added Flavorings, Zhi-Sen Liang, Yu-Zhen Chen, Lang-Jun Zhou
Food and Machinery
A qualitative and quantitative method for simultaneous detection of 7 potential presence of illegally-added flavorings, including trans-anethole, coumarin, estragole, lawsone, methyleugenol, pulegone and trans-cinnamaldehyde in tea samples. Tea samples were extracted with acetonitrile-water served as a mixed solvent, subjected to whirlpool oscillation and then diluted properly. After that, anhydrous sodium sulfate, primary secondary amine (PSA) and octadecylsiyl silica gel (C18) were added to the solvent for purification. The centrifugation, the supernatant was filtered over a membrane and separated on a Kinetex C18 column. These 7 target compounds were determined by UHPLC-MS/MS in MRM mode, and quantified utilizing …
Monitoring And Analysis On Microbes In Edible Areca Processing,
2023
Hunan Review and Accreditation Centre of Food Safety, Changsha, Hunan 410013 , China
Monitoring And Analysis On Microbes In Edible Areca Processing, Wen-Xiang Li, Feng Li, Song-Hang Zhou, Xiao Yuan, Xiong-Wei Huang, Bu-Cheng Xu, Juan Luo
Food and Machinery
To investigate the sanitary conditions of edible areca processing, improve the quality and safety of products, using spot investigation and lab test method, monitor the sanitary conditions of products and the processing environment in edible areca enterprise. The monitoring data will help the revision of detailed rules for the review of areca production licenses. The result shows, areca nuts storage condition improving and enhance the disinfection of production tools and workers, will effetely control the microbial contamination in production process, ensure the quality of products.
Optimized Model Of Dual-Chain Storage Of Food Supply Chain Data Based On Blockchain,
2023
School of E-commerce and Logistics, Beijing Technology and Business University, Beijing 100048 ,China ；Agricultural Engineering Quality Safety Traceability Technology and Application NationalEngineering Laboratory, Beijing 100048 , China
Optimized Model Of Dual-Chain Storage Of Food Supply Chain Data Based On Blockchain, Sheng-Qiao Gao, Xin-Liang Liu, Yan-Ping Gao
Food and Machinery
The emergence of blockchain provides a solution of decentralized integration of resources and elimination of information asymmetry for food supply chain, but most of the current solutions are facing performance and storage bottlenecks. In response to this problem, this paper proposes a dual-chain storage optimized model for food supply chain data based on blockchain. The model builds a double-chain structure of the main chain and the digest chain. Nodes can choose the appropriate storage mode according to their needs, which alleviates the problem of block storage expansion. By adopting the improved Delegated Proof of Stake and Byzantine fault tolerance consensus …
The Improvement Of Administrative Penalty Power Under The Framework Of New Food Safety Law Implementation Regulations,
2023
Xuzhou Institute of Technology, Xuzhou, Fujian 221000 , China
The Improvement Of Administrative Penalty Power Under The Framework Of New Food Safety Law Implementation Regulations, Qi Xu
Food and Machinery
The strict legal responsibility and administrative punishment standards specified and set in the new regulations for the implementation of the food safety law are major achievements of the rule of law in implementing the food safety law. At present, the main problems faced by the implementation of the regulations are that the boundary of "punishment to people" is not clear and the application of "excessive punishment is equivalent" is not coordinated. In order to realize "good law and good governance", it is necessary to further standardize the exercise procedure of administrative penalty power and clarify the applicable standards of administrative …
Establishment And Improvement Of Safety Supervision Mechanism Of Online Take-Out Food,
2023
Liaoning University of International Business and Economics, Dalian, Liaoning 116052 , China
Establishment And Improvement Of Safety Supervision Mechanism Of Online Take-Out Food, Yong-Gang Wang
Food and Machinery
This paper analyzes the current situation and types of supervision mechanism of online takeout food safety, analyzes the reasons of the problems existing in the mechanism, and perfects the feasibility of China's online takeout food safety supervision mechanism.。
Geographical Origin Traceability Discrimination Of Chongming Rice Wine,
2023
Institute for Agri-products Standards and Testing Technology, Shanghai 201403 , China
Geographical Origin Traceability Discrimination Of Chongming Rice Wine, Xing Liu, Qai-Cai Zhang, Chun-Xia Yao, Wei-Guo Song
Food and Machinery
Shanghai Chongming rice wine was used as the main research subject in this study. The natural abundance of hydrogen and oxygen stable isotopes (δ2H and δ18O values), mineral elements and free amino acids content were analyzed. The discriminant models of Chongming rice wines were established and the characteristic variables were screened by principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA). The results showed that the δ2H and δ18O values, mineral elements and free amino acids content in rice wines from different geographic origins were different, but only δ2 …
Research On The Application Of Digital Signature Technology In The Traceability Of Food Origin,
2023
Hunan Vocational Institute of Safety Technology, Changsha, Hunan 410151 , China
Research On The Application Of Digital Signature Technology In The Traceability Of Food Origin, Chun Liu, Zhu-Hong Liu
Food and Machinery
Through the introduction of digital signature technology, the specific and different application scenarios of various digital signature technologies were introduced. The basic principles and methods of food origin traceability were also discussed. The application of various digital signature techniques in food origin traceability was investigated, and the accuracy of food origin traceability cases based on different digital signature techniques was compared and studied. The development trend of digital signature technology in the field of food origin traceability was prospected.
Construction Of Public Food Safety Trust Mechanism In The Context Of Information Asymmetry,
2023
Xinjiang Vocational and Technical College of Construction, Urumchi, Xinjiang 830054 , China
Construction Of Public Food Safety Trust Mechanism In The Context Of Information Asymmetry, Qing-Jie Meng
Food and Machinery
One of the important reasons for the current lack of trust in food safety among the public is the information asymmetry existing in the relevant core stakeholders. The primary prerequisite for building public trust mechanism of food safety is to clarify the rights and obligations of the stakeholders of the judiciary, government, enterprises and the public based on the background of information asymmetry. Based on an overview of the basic theories of public food management, this study discussed the main dilemmas that the current public food safety trust mechanism is difficult to form, and points out the main scopes and …
Control System Of Rice Whitening Unit Based On Bp-Pid Controller Optimized By Pso Algorithm,
2023
School of Mechanical Engineering, Wuhan Polytechnic University, Wuhan, Hubei 430023 , China
Control System Of Rice Whitening Unit Based On Bp-Pid Controller Optimized By Pso Algorithm, Qiang Li, Jin Zhou, Yong-Lin Zhang, Shao-Yun Song
Food and Machinery
Aiming at the problems of poor flow stability among the current rice whitening unit, low single machine efficiency, unbalanced whitening or excessive broken rice caused by overmilling, a rice whitening unit control system based on particle swarm optimization (PSO) optimized BP-PID control was proposed. Using the multi-machine collaborative optimization technology, the flow balance control by adjusting the ratio of the rice bran-removing powder and the matching operating parameters of the online rice whitening machine. The parameters of the PID controller was trained through the BP neural network, a mathematical model for the regulation of the rice whitening unit was established, …
Experimental Investigation Of Dehumidification Characteristics Of Closed Drying System With Heat Pump,
2023
Guangdong Industry Polytechnic, Guangzhou, Guangdong 510300 , China
Experimental Investigation Of Dehumidification Characteristics Of Closed Drying System With Heat Pump, Wen-Liang Zeng, Bo-Ling Chen, Xuan Chen, Xue-Fei Jie
Food and Machinery
It was studied the performance characteristics such as specific moisture extraction rate (SMER) of closed heat pump drying system with the condition of different air mass-flow-rate, relative humidity and with or without heat pipe. The results showed that the effects of heat pipe on SMER of closed heat pump drying system were very significant, and the application of heat pipe could enhance the system SMER by 20%~200% under test conditions. Under the condition of the constant temperature and constant relative humidity, the SMER of the system had a maximum value while the air mass-flow-rate was between 0.2~0.4 kg/s. With constant …
An Improved Of Time Span Of Returning Moisture For Stem Soaking Machine,
2023
Guangxi Zhongyan Industrial Co., Ltd., Liuzhou, Guangxi 545005 , China
An Improved Of Time Span Of Returning Moisture For Stem Soaking Machine, Jin-Ling Kang, Sheng Cui, Wen-Zhen Huang, Liu-Jing Xie, Lin-Tao Tang, Qi-Xue Zhong
Food and Machinery
Aiming at the problem that the current time span of stem soaking machine can not meet the demand of the time span of stem returning from different raw materials, the design of the existing stem soaking machine was improved. The drainage opening is set at the feed end and the middle part of the transition trough respectively, and then the drainage opening and closing is controlled through the flap door and the cylinder, so as to adjust the moisture return time of the tobacco stalk. Under the premise of other parameter setting being unchanged, the improved stalk dipper's time span …
Identification Of Fig Maturity Based On Near-Infrared Spectroscopy And Partial Least Square-Discriminant Analysis,
2023
Qilu University of Technology, Shandong Academy of Science, College of Food Science andEngineering, Jinan, Shandong 250300 , China
Identification Of Fig Maturity Based On Near-Infrared Spectroscopy And Partial Least Square-Discriminant Analysis, Jing-Yu Zhou, Rui Sun, Duo Yu, Yu-Xuan Lv, Yan-Ling Han
Food and Machinery
In order to distinguish figs of different maturity accurately and quickly without damage, the samples of figs were collected by near-infrared spectroscopy, and K-means clustering was carried out for five indexes of fig sugar degree, single fruit weight, vertical diameter, horizontal diameter and hardness. According to the spectral data and the score chart of principal component analysis, the components of the optimal clustering effect and the index distribution of each category were determined. Based on the PLS-DA model, the cluster discrimination model was constructed to achieve the purpose of fruit maturity classification. Through the analysis of the differences of the …
Effect Of Refrigerated Storage On Nutritional Composition And Volatile Substances Of Yak Yogurt,
2023
Academy of Animal and Veterinary Sciences, Qinghai University, Xining, Qinghai 810016 ,China
Effect Of Refrigerated Storage On Nutritional Composition And Volatile Substances Of Yak Yogurt, Sheng-Sheng Li, Shu-Jie Liu
Food and Machinery
The purpose of this study was to investigate the nutritional composition and volatile substances changes of yak yogurt under refrigeration storage. The nutritional composition and volatile substance were measured by amino acid analysis, fatty acid methyl ester method and gas chromatography-mass spectrometry. The results showed that yak yogurt had no significant difference on the contents of protein, fat, lactose and water content (P＞0.05) under refrigeration storage. The total amino acid and flavour amino acid of yak yogurt significant increased after 7 d refrigeration storage (P＜0.05), and the increased rate were 12.96% and 8.51%, respectively; the amino acids score of yak …
Study On Antioxidant Effect Of Flavonoids From Artemisia Argyi And Its Application In Preservation Of Fresh Grade Breast,
2023
College of Tea and Food Science, Wuyi University, Wuyishan, Fujian 354300 , China
Study On Antioxidant Effect Of Flavonoids From Artemisia Argyi And Its Application In Preservation Of Fresh Grade Breast, Yu-Hua Yang, Yan Huang, Wei-Peng Zheng
Food and Machinery
In this paper, the total reducing power, O ·, ·OH and DPPH· scavenging capacity of the flavonoids from Artemisia argyi were studied by ultrasonic assisted extraction and macroporous resin purification. The changes of pH values, TBARS, TVB-N, redness value, hydrogen sulfide and other physical and chemical indexes of fresh grade breast and its effects on sensory quality were investigated .The results showed that the purified flavonoids from Artemisia argyi had a strong total reduction power and a good linear relationship, with the good scavenging ability for O ·, ·OH, and DPPH·, and the scavenging ability has a certain dose-effect relationship …
Antimicrobial Activity Of Chrysanthemum Buds Aqueous Extract On Escherichia Coli And Its Application,
2023
College of Food and Biological Engineering, Henan University of Science and Technology,Luoyang, Henan 471023 , China
Antimicrobial Activity Of Chrysanthemum Buds Aqueous Extract On Escherichia Coli And Its Application, Peng Fei, Min Xing, Chao-Qin Jiao, Bao-Xin Yang, Xin-Ying Hu, An-Ran Shao, Lin Lu, Huai-Bin Kang, Ling Guo
Food and Machinery
The purpose of this study was to evaluate the antimicrobial activity of Chrysanthemum buds aqueous extract (CBAE) on Escherichia coli, and discuss its application in meat products. The antimicrobial activity of CBAE against E. coli was evaluated by the determination of diameter of the inhibition zone (DIZ), minimum inhibitory concentration (MIC), and minimum bactericidal concentration (MBC). The possible action mechanism was revealed by the effect of CBAE on the growth curve, and the changes in intracellular ATP concentration, cell membrane potential, and cell morphology. Finally, the CBAE was used in the preservation of cooked pork. The results showed that the …
Effect Of Simulated Gastrointestinal Digestion In Vitro On The Antioxidant Activity Of Oyster Oligopeptides,
2023
Key Laboratory of Animal Protein Food Deep Processing Technology of Zhejiang Province,Ningbo, Zhejiang 315832 , China ；China National Research Institute of Food and FermentationIndustries Co., Ltd., Beijing 100015 , China ；Beijing Engineering Research Center of Protein andFunctional Peptides, Beijing 100015 , China
Effect Of Simulated Gastrointestinal Digestion In Vitro On The Antioxidant Activity Of Oyster Oligopeptides, Yong Ma, Li-Hui Gao, Xiao-Wen Feng, Rui-Zeng Gu, Tao Han, Wen-Ying Liu
Food and Machinery
Oyster oligopeptides were prepared by enzymolysis from shelled oyster meat. The molecular weight distribution, DPPH radical scavenging capacity, hydroxyl free radical (·OH) scavenging capacity, ABTS free radical scavenging capacity and oxygen radical absorption capacity (ORAC) of oyster oligopeptides were compared before and after digestion in vitro. The changes of antioxidant activity of the oligopeptides after digestion in simulated stomach and intestine were explored. The experimental results showed that the relative molecular weight of oyster oligopeptides was mainly under 1 000 Da, and the average molecular weight of pepsin and trypsin decreased by no more than 8.2%; after pepsin and trypsin …
Study On The Hypoglycemic Effect Of Dandelion Extract On Type 2 Diabetic Rats,
2023
Department of Traditional Chinese Medicine, School of Medicine, Yanbian University, Yanji, Jilin 133000 , China
Study On The Hypoglycemic Effect Of Dandelion Extract On Type 2 Diabetic Rats, Shuang Yan, Guang-Yao Li, Cong-Shu Dai, Hao-Zhen Cui, Zhen-Yu Liu, Chang-Qing Lin
Food and Machinery
Objective: To study the hypoglycemic effect of dandelion extract on type 2 diabetes (T2DM) rats. Methods: High-fat and high-sugar feed and streptozotocin (STZ) were used to establish type 2 diabetic rat model. The blank normal group, model group, dandelion high-dose group (400 mg/kg) and dandelion low-dose group (200 mg/kg) were set up in the experiment, positive group (150 mg/kg). Fasting blood glucose (FBG), glucose tolerance level (OGTT), insulin resistance (FINS) and insulin sensitivity (HOMA-IR) were measured in T2DM rats, and TC, TG, ALT, AST, SOD, GSH, CAT, MDA related indicators were measured. Results: Compared with the model group, the FBG, …
Effects Of Irradiated Proces On Hypoglycemic Activity Of Inonotus Obliquus Polysaccharide,
2023
Convergence College of Yanbian University, Yanji, Jilin 133000 , China
Effects Of Irradiated Proces On Hypoglycemic Activity Of Inonotus Obliquus Polysaccharide, Lu Zhang, Xin Jiang, Li-Ying Jin, Chang-Qing Lin, Cheng-Bi Cui
Food and Machinery
The effect of 60Co-γ ray irradiation on hypoglycemic activity of polysaccharides from Inonotus obliquus was explored. The polysaccharides of Inonotus obliquus under the irradiation doses of 5, 10, 20 and 30 kGy were extracted and their contents were determined. The experiment was performed on a mouse model of type I diabetes induced by streptozotocin (STZ) according to the grouping dose. The body weight, food intake and water intake of the mice were measured every day during the experiment, blood glucose levels were measured every 7 days, and glucose tolerance test (OGTT) was performed 30 days later. Blood samples were …
Purification Of Polyphenols From Dendrobium Huoshanense By Macroporous Resin And Its Antioxidant Activity,
2023
College of Biological and Chemical Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000 , China
Purification Of Polyphenols From Dendrobium Huoshanense By Macroporous Resin And Its Antioxidant Activity, Ming-Wei Chen, Ming Wei, Liang-Fan Tao, Sen-He Qian
Food and Machinery
In this study, the ideal adsorbent for Dendrobium hu-oshanense polyphenols were obtained, after the comparison test for the adsorption-desorption properties of different types of resins. The purification parameters were optimized by adsorption and desorption tests. The antioxidant activities of polyphenols were evaluated in vitro. The results showed that AB-8 macroporous resin was considered as suitable material for purifying and separating Dendrobium huoshanense polyphenols.And the macroporous resin reached equilibrium within 150 min. The optimal processing parameters were as follows: an initial polyphenol concentration of 2.0 mg/mL, pH 4.0, a flow rate of 1.0 mL/min for feeding and a flow rate of …
Separation And Purification Of Polysaccharides From Liquid Fermentation Product By Cordyceps Tenuipes,
2023
College of Basic Medicine, Guizhou University of Traditional Chinese Medicine, Guizhou,Guiyang 550025 , China ；Center for Mycomedicine Research, Guizhou University ofTraditional Chinese Medicine, Guizhou, Guiyang 550025 , China
Separation And Purification Of Polysaccharides From Liquid Fermentation Product By Cordyceps Tenuipes, Xiao-Ai Wang, Jian-Dong Liang, Xiao-Jiao Gao, Yuan-Jun Cai, Yu-Meng Qin, Wei-Yi Tian
Food and Machinery
Using Box-Behnken central combination test design and single factor test were used to optimize the fermentation process of cordyceps polysaccharide, water extraction and alcohol precipitation process and deproteinization process. The results showed that the optimum fermentation conditions of Cordyceps tenuipes were glucose 33.3 g/L, peptone 29.2 g/L, inoculation amount 3.9%. The optimum extraction conditions of Exopolysaccharides were concentration, 3 times ethanol, pH 6.0 and precipitation for 24 h. The optimum extraction conditions were 1∶40 (g/mL), extraction time 90 min, extraction times 2 times, and extraction temperature 80 ℃. In the purification of polysaccharides, the optimum deproteinization techniques of Sevage were …
