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Articles 29761 - 29790 of 255951

Full-Text Articles in Life Sciences

The Study On The Effect Of The Internal Heat Exchanger On Transcritical Co2 Ejector Refrigeration System, Wu Dongjiong, Hu Jiang, Li Yang Jan 2024

The Study On The Effect Of The Internal Heat Exchanger On Transcritical Co2 Ejector Refrigeration System, Wu Dongjiong, Hu Jiang, Li Yang

Food and Machinery

Objective: This study aimed to investigate the effect of internal heat exchanger on the performance of transcritical CO2 two-stage compression/ejector refrigeration system. Methods: The simulation software was used to analyze the effects of the internal heat exchanger on the suction temperature, discharge temperature, specific work increment of the low-pressure compressor and system performance coefficient under different gas cooler outlet temperatures (25～45 ℃), high-pressure side discharge pressure (7.4～9.5 MPa), evaporation temperature (-40～-15 ℃) and intermediate pressure (3～5 MPa). Results: With the increase of intermediate pressure, the discharge temperature and specific work increment of the low-pressure compressor increased at a specific …

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Motion And Force Analysis Of Mold Open-Closing Mechanism With Electric Eight-Bar For Food Packaging Thermoforming Machine, Xie Zhigang, Chen Xiaoqin, Xu Zhiyang Jan 2024

Motion And Force Analysis Of Mold Open-Closing Mechanism With Electric Eight-Bar For Food Packaging Thermoforming Machine, Xie Zhigang, Chen Xiaoqin, Xu Zhiyang

Food and Machinery

Objective: To solve the technical problems in the design and analysis of the core parts of the mold open-closing mechanism related rod. Methods: The motion and force analysis of mold open-closing mechanism with an electric eight-bar was described in detail by using the analytical method. Results： Based on the example calculation, the relationship curve between the displacement of the slider and the crank angle was obtained, and the variation law of velocity and acceleration was further deduced. Meanwhile, the theoretical clamping force, the changing trend and the characteristics of each member force in the sheet extrusion process were analyzed. Conclusion: …

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Paddy-Brown Rice Boundary Detection Method Based On Machine Vision, Liu Hao, Fan Jijun, Yu Nanhui, Liu Xiaopeng, Zhou Jin, Mou Yi Jan 2024

Paddy-Brown Rice Boundary Detection Method Based On Machine Vision, Liu Hao, Fan Jijun, Yu Nanhui, Liu Xiaopeng, Zhou Jin, Mou Yi

Food and Machinery

Objective: To detect and locate the boundary line between paddy and brown rice in separation equipment. Methods: A method based on straight-line edge detection was proposed by performing model matching with different color features. Converted the resulting images to grayscale and applied the linear edge detection algorithm to locate the target position. Results: Our approach reduced the error to within 5% and significantly improved recognition accuracy compared to traditional methods. Conclusion: Proposed method has a small recognition error, making it suitable for identifying the boundary between paddy and brown rice.

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Research On Internal Temperature Temporal And Spatial Distribution Of Citrus Peel In Heat Treatment Process, Zhao Yao, He Zhaoying, Jiang Yuhong, Cai Xiangyu, Li Shiquan Jan 2024

Research On Internal Temperature Temporal And Spatial Distribution Of Citrus Peel In Heat Treatment Process, Zhao Yao, He Zhaoying, Jiang Yuhong, Cai Xiangyu, Li Shiquan

Food and Machinery

Objective: This study aimed to obtain the temperature distribution law of different points in citrus fruit over time during heat treatment. Methods: The temperature change of citrus peel during heat treatment was studied from the perspective of heat transfer. A new method was applied to calculate the temperature transfer rule in citrus peel, and a new mathematical model was established to simulate the temperature distribution of citrus peel during heat treatment. The spatial and temporal distribution of the internal temperature field of three kinds of citrus (Fengjie Navel orange, longevity blood orange and Ziyang Tangerine) was studied. Results: The study …

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Effects Of Matcha On Lipid Oxidation During Storage Of Coix Seed, Chen Chan, Huang Jing Jan 2024

Effects Of Matcha On Lipid Oxidation During Storage Of Coix Seed, Chen Chan, Huang Jing

Food and Machinery

Objective: This study aimed to study the effect of matcha on lipid oxidation during the storage of coix seed. Methods: The fresh coix seeds were used as raw material and treated with matcha tea powder in different doses. The changes in water content, fatty acid value, peroxidation value, malondialdehyde content, total number of colonies and key enzyme of lipid oxidation were determined during the storage of coix seeds. Results: The treatment with different doses of matcha powder could inhibit the increase of fatty acid value, peroxide value, malondialdehyde content, lipase, and lipoxygenase activities, and reduce water consumption and microbial growth …

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Effect Of Ultra-High Temperature Transient Sterilization On Quality Of Rice Wine, Xiong Sirui, Wang Longyu, Wang Yunfeng, Wang Yuting, Jin Tieyan, Zhang Ling Jan 2024

Effect Of Ultra-High Temperature Transient Sterilization On Quality Of Rice Wine, Xiong Sirui, Wang Longyu, Wang Yunfeng, Wang Yuting, Jin Tieyan, Zhang Ling

Food and Machinery

Objective: To study the effect of ultra-high temperature (UHT) on the quality of rice wine. Methods: Korean rice wine underwent weekly measurements of its physicochemical, sensory, and microbiological parameters during the storage period after being subjected to UHT. This allowed for the analysis of changes in the quality and functional components of the sterilized Korean rice wine after 20 weeks of storage, as well as the determination of the best sterilization conditions for this method. Results: Sterilization time of 5 s at 125 ℃ is the optimum parameter for UHT. After 20 weeks of storage, the total amino acid content …

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Application Of Surface-Enhanced Raman Spectroscopy In Food Safety Detection, Wang Liuliu, Sun Fangtao Jan 2024

Application Of Surface-Enhanced Raman Spectroscopy In Food Safety Detection, Wang Liuliu, Sun Fangtao

Food and Machinery

Based on Raman scattering phenomenon, surface-enhanced Raman spectroscopy （SERS） detection technology enhances "fingerprint" information of tested substance by adsorbing it on the surface of SERS substrate to achieve trace detection. With the advantages of simple pre-processing, high sensitivity, simple operation, real-time non-destructive detection on site and so on, SERS analysis technology has attracted much attention in food safety rapid detection. The characteristics and limitations of various types of SERS substrates were introduced. The recent research on SERS detection technology in food safety detection was summarized in detail. Finally, this paper discussed the challenges of its commercial application, and prospected the …

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Research Progress In The Detection Technology Of Chloramphenicol Residues In Animal Derived Food, Yuan Zhe, Peng Maomin, Liu Li, Peng Xitian, Xia Hong Jan 2024

Research Progress In The Detection Technology Of Chloramphenicol Residues In Animal Derived Food, Yuan Zhe, Peng Maomin, Liu Li, Peng Xitian, Xia Hong

Food and Machinery

Chloramphenicol is a widely used bactericide and highly effective antibiotic in aquaculture and livestock breeding. To protect human health, detecting chloramphenicol residues in animal-derived food products has become increasingly important. This review introduces the properties of chloramphenicol, the limit standards, and the hazards of residual chloramphenicol in animal-derived food products. Furthermore, it describes commonly used chloramphenicol detection methods. In addition, the review thoroughly analyzes and summarizes the advantages and disadvantages of different detection methods, outlining methods to improve the efficiency and precision of chloramphenicol detection to ensure the quality and safety of animal-derived food products. Finally, the prospects for developing …

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Research Progress Of Plant Exosome-Like Nanoparticles On Characteristics, Components And Functions, Chen Chunping, Xu Hongyan, Liu Shuaichen, Tian Yuxin, Wang Yuchen Jan 2024

Research Progress Of Plant Exosome-Like Nanoparticles On Characteristics, Components And Functions, Chen Chunping, Xu Hongyan, Liu Shuaichen, Tian Yuxin, Wang Yuchen

Food and Machinery

Exosome-like nanoparticles （ELNs） are nano-sized extracellular vesicles enclosed by lipid bilayer membrane and secreted by cells; And carrying a variety of cargo, including lipids, proteins, miRNAs and secondary metabolites. Plant ELNs have received widespread attention due to their unique structure and excellent physiological activity. This review summarizes the isolation methods, characteristics, components and functions of plant ELNs, focusing on the application of multi-omics technologies in plant ELNs. In addition, some suggestions for further study of plant ELNs were put forward.

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Metabolic Collaboration Between Cells In The Tumor Microenvironment Has A Negligible Effect On Tumor Growth, Johan Gustafsson, Fariba Roshanzamir, Anders Hagnestål, Sagar M. Patel, Oseeyi I. Daudu, Donald F. Becker, Jonathan L. Robinson, Jens Nielsen Jan 2024

Metabolic Collaboration Between Cells In The Tumor Microenvironment Has A Negligible Effect On Tumor Growth, Johan Gustafsson, Fariba Roshanzamir, Anders Hagnestål, Sagar M. Patel, Oseeyi I. Daudu, Donald F. Becker, Jonathan L. Robinson, Jens Nielsen

Department of Biochemistry: Faculty Publications

The tumor microenvironment is composed of a complex mixture of different cell types interacting under conditions of nutrient deprivation, but the metabolism therein is not fully understood due to difficulties in measuring metabolic fluxes and exchange of metabolites between different cell types in vivo. Genome-scale metabolic modeling enables estimation of such exchange fluxes as well as an opportunity to gain insight into the metabolic behavior of individual cell types. Here, we estimated the availability of nutrients and oxygen within the tumor microenvironment using concentration measurements from blood together with a metabolite diffusion model. In addition, we developed an approach …

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Research On Transparent Design Of Agricultural Product Packaging, Song Mingxuan, Tian Yuan Jan 2024

Research On Transparent Design Of Agricultural Product Packaging, Song Mingxuan, Tian Yuan

Food and Machinery

The paper introduces the origin and style characteristics of transparent design concept, discusses the significance and value of introducing transparent design in agricultural product packaging, and elaborates on the application principles and issues that need to be paid attention to when introducing transparent design in agricultural product packaging from three aspects: pattern design, color application, and material selection.

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Continuous Preparation Of Antioxidant Low Molecular Weight Hyaluronic Acid By Coupling Of Enzymolysis And Membrane Separation, Teng Wei, Liu Junhui, Wu Jinhong, Liu Shutao Jan 2024

Continuous Preparation Of Antioxidant Low Molecular Weight Hyaluronic Acid By Coupling Of Enzymolysis And Membrane Separation, Teng Wei, Liu Junhui, Wu Jinhong, Liu Shutao

Food and Machinery

Objective: This study aimed to construct an enzymolysis and membrane separation method to improve the production efficiency of low molecular hyaluronic acid (HA). Methods: A continuous enzymolysis and membrane separation coupling reaction system was designed, which consisted of an enzyme biological reaction tank and a flat polyethersulfone ultrafiltration membrane separation module. By evaluating membrane flux, membrane contamination, hyaluronic acid concentration, and yield, the effects of various factors on the separation of low molecular HA in the enzyme-membrane coupling system were systematically investigated. The process parameters of the enzyme-membrane coupling reaction were further optimized through orthogonal experiments. Results: The optimal process …

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The Influence Of Stacking Mode And Air Supply Power On Cooling Effect Of Cold Storage, Xu Jing, Wang Feng, Tan Zhenhua, Lu Qiufang Jan 2024

The Influence Of Stacking Mode And Air Supply Power On Cooling Effect Of Cold Storage, Xu Jing, Wang Feng, Tan Zhenhua, Lu Qiufang

Food and Machinery

Objective: Reasonable planning of the stacking of goods in the mobile cold storage and reasonable design of the air supply power of the fan, to reduce cold storage energy consumption and improve economic efficiency. Methods: A three-dimensional physical model and k-ε mathematical model of a certain cold storage were established, and the temperature field inside the cold storage under different stacking methods of goods and different air supply power were simulated using Fluent software. Results: The research results showed that under the same working conditions, the average storage temperature of goods horizontally was 2.014 ℃, and the average storage temperature …

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Anti-Fatigue Effect Of Hemp Seed Oligopeptide In Mice And Its Sex Difference, Miao Wenyu, Li Yunfei, Song Lulu, Wang Jingjing, Cheng Jianjun, Qin Nan Jan 2024

Anti-Fatigue Effect Of Hemp Seed Oligopeptide In Mice And Its Sex Difference, Miao Wenyu, Li Yunfei, Song Lulu, Wang Jingjing, Cheng Jianjun, Qin Nan

Food and Machinery

Objective: To explore the anti-fatigue effect of hemp seed oligopeptides, and its effect and mechanism between male and female individuals. Methods: Equal number of male and female mice were randomly divided into a blank control group, a positive control group and low, medium and high dose groups. The blank control group was given normal saline, the positive control group was given whey protein. Gavage treatment was carried out with the corresponding drug for 28 days. Body weight, exhaustive swimming time, blood lactic acid （BLA）, urea nitrogen （BUN）, liver glycogen （LG） contents of mice were measured. Results: Regardless of gender, flax …

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Effects Of Ultra-High Pressure Treatment On Bacterial Diversity Of Epinephelus Coioides During Refrigeration, Huang Li, Pang Tingcai, Qi Cen, Chen Deqiang Jan 2024

Effects Of Ultra-High Pressure Treatment On Bacterial Diversity Of Epinephelus Coioides During Refrigeration, Huang Li, Pang Tingcai, Qi Cen, Chen Deqiang

Food and Machinery

Objective: This study focused on the effectively control of the spoilage and deterioration of grouper during refrigeration. Methods: Illumina high-throughput sequencing technology was used to amplify the 16S rDNA V3-V4 segment of bacteria, then analyzed the changes in the bacterial community structure of E. obliquus after being treated with 400 MPa UHP for 5 minutes and refrigerated at 4 ℃ for 3, 6, 9, and 12 d. Results: According to Alpha diversity analysis fish samples treated with and without UHP showed increasing Chao1 and Ace indices as refrigeration times were extended, but Shannon indices progressively dropped. Nonetheless, the fish samples …

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Effect Of Uv Sterilization On The Quality Of Grass Carp Meat During The Chilling Storage, Yuan Liping, Peng Bin, Zhong Bizhen, Hu Mingming, Li Jinlin Jan 2024

Effect Of Uv Sterilization On The Quality Of Grass Carp Meat During The Chilling Storage, Yuan Liping, Peng Bin, Zhong Bizhen, Hu Mingming, Li Jinlin

Food and Machinery

Objective： The effect of UV sterilization on the texture quality and flavor substances of the frozen grass carp meat was studied, and the best UV irradiation time was determined. Methods: The grass carp meat was pretreated with different UV irradiation times （0, 30, 60, 90, 150 min） at 30 W of UV radiation, then the quality parameters （apparent morphology, total number of bacteria on the surface of fish, juice loss rate, texture parameters, color, odor and sensory） and volatile components of the fish meat during chilling storage （0, 3, 6, 9 d） were measured. Results: It showed that the longer …

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Effect Of Polyphenol Compound Formula On Relieving Exercise Fatigue In Mice, Fu Mengfan, Zhang Chun, Liu Binghao, Liu Suwen, Shi Donglin, Liu Jing, Chang Xuedong Jan 2024

Effect Of Polyphenol Compound Formula On Relieving Exercise Fatigue In Mice, Fu Mengfan, Zhang Chun, Liu Binghao, Liu Suwen, Shi Donglin, Liu Jing, Chang Xuedong

Food and Machinery

Objective： This study aimed to explore the fatigue relieving effect of Lonicera caerulea Berry polyphenol, hawthorn polyphenol microcapsules, lactoferrin and vitamin C as polyphenol compound formula to alleviate fatigue. Methods： The commercial sports nutrition food with the compound formula of creatine, β-hydroxy-β-methylbutyrate, fructose diphosphate, taurine, vitamin B6 and watermelon powder was used as the positive control. The experiment of exhaustive swimming in mice was carried out. The fatigue related indexes were determined by the kit, and the microscopic pathological tissues of the organs were observed by H&E staining. Results： There was no significant difference in body …

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Antioxidant Activity And Α-Glucosidase Inhibitory Activity Of Five Banana Pulp Polyphenols, Ran Jingfeng, Chen Xiaoai, Yi Cuiping, Zhang Yanjun Jan 2024

Antioxidant Activity And Α-Glucosidase Inhibitory Activity Of Five Banana Pulp Polyphenols, Ran Jingfeng, Chen Xiaoai, Yi Cuiping, Zhang Yanjun

Food and Machinery

Objective: The purpose of this study was to compare the activity difference of polyphenols in banana pulp of different varieties and to provide scientific basis for the exploitation and utilization of banana pulp polyphenols. Methods: Five banana pulp polyphenols were extracted by ultrasonic extraction, and the phenolic components were analyzed by ultra-high performance liquid chromatography （UHPLC）. The antioxidant capacity and inhibition ability of α-glucosidase were determined. Results: The total polyphenols, flavonoids and tannins content were significant differences among five varieties （P＜0.05）. Eight phenolic compounds were identified in five banana pulps, including four phenolic acids and their derivatives, …

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From Eye To Heart: Evolution And Future Trend Of Aesthetic Value Of Packaging Design, Miao Zhenting Jan 2024

From Eye To Heart: Evolution And Future Trend Of Aesthetic Value Of Packaging Design, Miao Zhenting

Food and Machinery

On the basis of analyzing the alienation of existing packaging design, this paper expounds on the evolution process of the aesthetic value of packaging design. It is pointed out that the current packaging design's "people-oriented" aesthetic values are insufficient. The emotional design of packaging cannot be limited to catering to the emotional needs of consumers but needs to deeply explore the hidden emotional needs of consumers, and guide the improvement of aesthetic values of consumers from the level of spiritual and cultural needs (cultural return, natural return, traditional return).

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The Growth And Decline Of Bacterium During The Processing Of Meat Jujube, Zhou Xiao, Yin Hanliang, Tan Yisheng, Sun Junhua, Liu Yang Jan 2024

The Growth And Decline Of Bacterium During The Processing Of Meat Jujube, Zhou Xiao, Yin Hanliang, Tan Yisheng, Sun Junhua, Liu Yang

Food and Machinery

Objective: In order to determine the key control points that cause samples bagging and strengthen the prevention and control of microbial contamination during the processing of meat dates. Methods: Traditional microbial culture method combined with high-throughput DNA sequencing method was used to analyze the changes of bacterium during the processing of meat jujube and swollen bag of samples. Results: The total number of colonies basis was low in soft bones, while in the chicken skin reached to 9.10×104 CFU/g. And the total number of colonies decreased to 30 CFU/g after cooking, but increased significantly after vacuum packaging, indicated a …

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Optimization Of Extraction Technology Of Iota Carrageenan By Ultrasonic Wave Combined With Enzyme, Xie Limei, Chen Jing, Zheng Huixin, Guo Shaoli, Zhang Ningning Jan 2024

Optimization Of Extraction Technology Of Iota Carrageenan By Ultrasonic Wave Combined With Enzyme, Xie Limei, Chen Jing, Zheng Huixin, Guo Shaoli, Zhang Ningning

Food and Machinery

Objective: This study focused on optimizing the Iota carrageenan extraction process and improving Iota carrageenan yield. Methods: Iota carrageenan was extracted from Eucheuma spinulosa by ultrasonic-assisted complex enzyme technology. Through single factor and orthogonal experiments, the optimum ratio of complex enzymes (cellulase, hemicellulose and papain) and enzymatic hydrolysis conditions of complex enzymes were first determined. Then, the optimum ultrasonic treatment conditions were determined. Finally, the boiling process conditions were optimized. Results: The optimal compound enzyme ratios were cellulase of 0.50%, hemicellulase of 1.25% and papain of 0.20%. The optimal enzymolysis conditions were as follows: enzymolysis at 60 ℃ and pH …

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Research Progress On Extraction Technology, Nutritional Ingredient And Health Benefit Of Grape Seed Oil, Meng Yuzhu, Lei Changgui, Chen Jinping, Zhang Xiaodong, Zhang Zhiqian Jan 2024

Research Progress On Extraction Technology, Nutritional Ingredient And Health Benefit Of Grape Seed Oil, Meng Yuzhu, Lei Changgui, Chen Jinping, Zhang Xiaodong, Zhang Zhiqian

Food and Machinery

Grape pomace is a major by-product produced during grape processing, including grape skin, pulp and seed. Grape seed oil (GSO) obtained from grape seeds is one of the vegetable oil with high nutritional value. It is rich in nutrients such as polyunsaturated fatty acids, tocopherols, phytosterols and phenols. It has many physiological effects such as antioxidant, anti-inflammatory, hypolipidemic, weight loss and antibacterial. Based on the relevant research reports at home and abroad in recent years, this review systematically summarized the extraction technologies, nutritional compositions and health effects of GSO. The research and development direction of GSO in the future was …

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Progress In Research On Fresh-Keeping, Storage And Processing Technology Of Cistanche Deserticola, Zhu Zhipeng, Bai Yujia Jan 2024

Progress In Research On Fresh-Keeping, Storage And Processing Technology Of Cistanche Deserticola, Zhu Zhipeng, Bai Yujia

Food and Machinery

Cistanche deserticola is one of the precious traditional Chinese medicines that can be eaten fresh. Its highly active life and zoning restrictions cause it to brown, soften, and even mildew when being transported and stored. The processing technology and preservation and storage techniques were analyzed by thoroughly reading literatures in this field. Moreover, the advantages and disadvantages of different processing methods were analyzed, and the development direction of C. deserticola processing technology was prospected.

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Status Of Clinical Research On Arginine And Its Application In Food For Special Medical Purpose, Chen Yao, Cao Ping, Chen Juan, Yuan Songmei, Li Wei Jan 2024

Status Of Clinical Research On Arginine And Its Application In Food For Special Medical Purpose, Chen Yao, Cao Ping, Chen Juan, Yuan Songmei, Li Wei

Food and Machinery

In recent years, arginine has received extensive attention from researchers and scholars in the field of food and nutrition because of its important role in patients' postoperative recovery and cardiovascular health. This article describes the metabolic pathways, physiological functions, absorption and intake of arginine, summarizes the application of arginine in clinical research and food for special medical purpose, and the future direction of development and research of the food for special medical purpose is also prospected.

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Analysis Of The Elements And Development Trends Of Cereal Meal Replacement Powder, Yang Ruifang, Bai Jianjiang, Tang Jianhao, Piao Zhongze, Wan Changzhao, Xu Weiqin Jan 2024

Analysis Of The Elements And Development Trends Of Cereal Meal Replacement Powder, Yang Ruifang, Bai Jianjiang, Tang Jianhao, Piao Zhongze, Wan Changzhao, Xu Weiqin

Food and Machinery

Cereals are enriched with many nutrients that are good for human health. Cereal meal replacement powder interventions can reduce weight, improve blood lipids, regulate postprandial glucose, adjuvant treatment and prevention of diabetes, and have a wide range of applications and development prospects. In this review, the processing materials, efficacy, formulation optimization methods, digestive properties, processing techniques, and related implementation standards for meal replacements are summarized, and the development of meal replacements is prospected.

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The Transformation And Upgrading Strategy From The Food Equipment Industry For Exporting Countries Along The Belt And Road, Zhang Chongjie, Wang Mengjie Jan 2024

The Transformation And Upgrading Strategy From The Food Equipment Industry For Exporting Countries Along The Belt And Road, Zhang Chongjie, Wang Mengjie

Food and Machinery

Through the analysis of the current development status, industry bottlenecks, and new challenges faced by China's food equipment industry, the necessity of transformation and upgrading of China's food equipment industry is demonstrated. Based on the interpretation of the Belt and Road Initiative, human capital, industrial value chain, technological innovation and environmental regulation are refined and determined as the factor indicators affecting the transformation and upgrading of the food equipment industry under the Belt and Road Initiative, and the corresponding mechanism analysis is carried out. The paper puts forward specific strategies for the transformation and upgrading of the food equipment industry …

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Study On Changes In Tenderness Of Yanbian Cattle During Dry And Wet-Aging, Zhang Boyuan, Sun Depeng, Wang Yuhan, Tian Jingyi, Mu Baide, Cui Mingxun, Li Guanhao Jan 2024

Study On Changes In Tenderness Of Yanbian Cattle During Dry And Wet-Aging, Zhang Boyuan, Sun Depeng, Wang Yuhan, Tian Jingyi, Mu Baide, Cui Mingxun, Li Guanhao

Food and Machinery

Objective: This study aimed to investigate the changes of beef tenderness during dry and wet-aging. Methods: Yanbian cattle was used as material to determine the changes in shear force, pH, moisture content, myofibrillar fragmentation index, protein degradation and histological properties of muscle fibers within 30 days after dry and wet-aging. Results: With the extension of aging time, the shear force of dry and wet aging beef samples decreased significantly, and the shear force decreased from 91.7 N to 51.6 N and 39.8 N at 30 days of aging, respectively. The myofibrillar fragmentation index and myofibrillar protein degradation changed significantly. After …

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Effect Of Flavor Characteristics And Salt Reduction And Flavor Enhancement Of Three Edible Fungi By Nano-Pulverization, Ban Xinrong, Yang Yan, Li Wen, Wu Di, Zhang Zhong, Chen Wanchao, Li Jingjun Jan 2024

Effect Of Flavor Characteristics And Salt Reduction And Flavor Enhancement Of Three Edible Fungi By Nano-Pulverization, Ban Xinrong, Yang Yan, Li Wen, Wu Di, Zhang Zhong, Chen Wanchao, Li Jingjun

Food and Machinery

Objective: This study aimed to optimize the processing technology of edible fungi and evaluate its application potential as flavoring agents in the food industry. Methods: The content of non-volatile flavor components of the samples was determined by ion chromatography and high-performance liquid chromatography, and the umami of the samples was evaluated by equal umami concentration. The volatile aroma components in the samples were detected by GC-MS, electronic nose and electronic tongue. The microstructure before and after Nano-pulverization was observed, and the experiment of increasing freshness and reducing salt was carried out. Results: After Nano-pulverization, the contents of umami amino acids, …

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Establishment And Dietary Risk Assessment Of Uplc-Ms/Ms Detection Method For 16 Quinolone Antibiotics In Freshwater Fish, Gao Yunkai, Cheng Chunqian, Cheng Xiaomei, Zhou Lingyu, Dend Yinglin, Yin Qingchun Jan 2024

Establishment And Dietary Risk Assessment Of Uplc-Ms/Ms Detection Method For 16 Quinolone Antibiotics In Freshwater Fish, Gao Yunkai, Cheng Chunqian, Cheng Xiaomei, Zhou Lingyu, Dend Yinglin, Yin Qingchun

Food and Machinery

Objective: This study aimed to establish a method for the simultaneous determination of 16 quinolones in freshwater fish by ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) and then analyze the effect of three different cooking methods (by boiling, steaming and frying) on the residues of quinolone antibiotics. Methods: Samples were ultrasonic extracted with acetonitrile (with 4% formic acid) and purified with C18 solid phase extraction column. The chromatographic separation was performed on a Waters ACQUITY UPLC BEH C18 (1.7 μm, 2.1 mm×100 mm) column, with 0.1% formic acid water-acetonitrile as mobile phase for gradient elution. Mass spectrometry (ESI+) was …

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Rapid Detection Of Methyl Parathion By Electrochemical Biosensor Based On Rgo-Aunps Modified Screen Printing Electrode, Geng Junhao, Li Xuezhi, Zhou Jianping, Chen Changhua Jan 2024

Rapid Detection Of Methyl Parathion By Electrochemical Biosensor Based On Rgo-Aunps Modified Screen Printing Electrode, Geng Junhao, Li Xuezhi, Zhou Jianping, Chen Changhua

Food and Machinery

Objective: In order to achieve rapid detection of methyl parathion. Methods: An acetylcholinesterase sensor was prepared based on gold nanoparticles and reduced graphene oxide for quantitative detection of Methyl parathion. Reduced graphene oxide, gold nanoparticles and acetylcholinesterase were successively modified on the surface of the screen printing electrode by layer-by-layer assembly method. The catalytic activity and impedance characteristics of the sensor, the relationship between the sensor's inhibition rate and MP concentration, and the actual sample detection were evaluated. Results: The prepared acetylcholinesterase biosensors showed excellent affinity for acetylthiocholine chloride with the Michaelis-Menten constant of 2.76 mmol/L. Under the optimal conditions, …

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