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Articles 421 - 450 of 525
Full-Text Articles in Food Processing
Simulation Research On Motion Connection System Of Omnidirectional Mobile Robot Based On Pid Bontrol, Lin Xian-Xin
Simulation Research On Motion Connection System Of Omnidirectional Mobile Robot Based On Pid Bontrol, Lin Xian-Xin
Food and Machinery
In this study, the mathematical model of rigid connection between omni-directional mobile robot and dish transportation tray was established, and its transfer function was calculated. The impact interference of the object subjected to inertia force and friction force on the system performance was analyzed, and the method of using series PID controller for correction was proposed. Through theoretical and empirical formula calculation, the optimal control system and the optimal system waveform were obtained. The simulation results showed that the rigid connection between omni-directional mobile robot and tray on overhead track was better, and the efficiency of dish transportation was improved. …
Design Of Visual Grading System For Fresh Stipe-Free Shiitake Mushroom, Wang Wei, Liu Ya-Chuan, Lv Bin, Hu Xin-Yu
Design Of Visual Grading System For Fresh Stipe-Free Shiitake Mushroom, Wang Wei, Liu Ya-Chuan, Lv Bin, Hu Xin-Yu
Food and Machinery
Aiming at the requirements of intelligent production of deep processing of fresh shiitake mushrooms (Lentinus edodes), the research proposed an intelligent grading method of fresh shiitake mushrooms based on machine vision and designed an automatic grading system. The image of fresh shiitake mushrooms can be divided into three areas, including pileus, turned edge and lamella. The geometric characteristics of each area are the main basis for classification. Firstly, the manual intervention was used to divide and identify a limited number of samples, and establish a Gaussian mixture model; Secondly, the system was trained to identify samples and the identifying model …
Circular Parts Detection Based On Improved Hough Transform Algorithm, Xiong Bao-Yu
Circular Parts Detection Based On Improved Hough Transform Algorithm, Xiong Bao-Yu
Food and Machinery
Detection of circular parts is proposed based on improved Hough transform algorithm. 70%~80% of the edge pixels of the circular parts image are randomly sampled based on the minimum error, which reduced the accumulation of irrelevant data. The clustering algorithm is avoided the appearance of false center, and the roundness is judged by the eligibility of actual circular parts, which give the process. The experimental results show that the parameter value of the improved Hough transform algorithm is closest to the standard value, and the average uncertainty of the circular parts were 0.053 3, which is 35.55%, 32.10%, 26.48%, 18.63%, …
Design And Parameters Optimization Of Multifunctional Encrusting Machine, Lin Xue, Huang Peng-Cheng, Tian Li-Quan, Hou Chang-An
Design And Parameters Optimization Of Multifunctional Encrusting Machine, Lin Xue, Huang Peng-Cheng, Tian Li-Quan, Hou Chang-An
Food and Machinery
Aiming at the problems of poor bonding & sealing performance and oil leakage in the filling process of food processing machinery, a multifunctional encrusting machine is designed based on the processing technology of “pushing down the filling, rolling the filling, cutting and closing”. The encrusting machine includes many key mechanisms such as dough conveying mechanism, stuffing circulation system and closing and discharging device, which can realize the processing links of dough feeding, stuffing encasement, finished product closing and discharging. Meanwhile, the filling leakage rate of the whole machine is proposed to characterize the use effect of the multifunctional encrusting machine. …
Crayfish Quality Detection Method Based On Yolov4, Wang Shu-Qing, Huang Jian-Feng, Zhang Peng-Fei, Wang Juan
Crayfish Quality Detection Method Based On Yolov4, Wang Shu-Qing, Huang Jian-Feng, Zhang Peng-Fei, Wang Juan
Food and Machinery
A crayfish quality detection model using YOLOv4 deep learning algorithm is designed. The algorithm is optimized in terms of network architecture, data processing, and feature extraction. The crayfish image data is collected by video capture and image expansion, and then the data is annotated by LableImage platform. The model is trained under the Darknet framework. By contrast, the final model performance is higher than other common target detection models, and the detection accuracy rate is 97.8%, the average detection time is 37 ms, which proves that the method can effectively detect the quality of crayfish in the production process.
Preservation Effects Of Oridonin/Chitosan Composite Film On Chilled Chicken Breast Meat, Wang Qian, Jiu Min, Meng Yuan-Yuan, Kong Ming-Jie, Yin Cheng-Rui, Wang Lun-Ji
Preservation Effects Of Oridonin/Chitosan Composite Film On Chilled Chicken Breast Meat, Wang Qian, Jiu Min, Meng Yuan-Yuan, Kong Ming-Jie, Yin Cheng-Rui, Wang Lun-Ji
Food and Machinery
Oridonin/chitosan (OR-CS) composite film was prepared and its preservation effect on chilled chicken breast meat was also investigated. The composite film was covered on the surface of the chilled chicken breast meat, and then covered with a layer of fresh-keeping film, which was stored at 4 ℃. The changes of pH, color, pressure loss, TVB-N, total number of colonies and sensory evaluation of the chilled chicken breast meat during storage were tracked and detected. The results showed that OR-CS composite membrane treatment could significantly reduce the increase of pH value, total bacterial count, TVB-N content and juice loss rate of …
Design Of Green Beans Online Screening System Based On Double Linear Ccd, Wu Chen-Chen, Wang Yong-Qiang, Zhou Cong-Ling
Design Of Green Beans Online Screening System Based On Double Linear Ccd, Wu Chen-Chen, Wang Yong-Qiang, Zhou Cong-Ling
Food and Machinery
To meet the needs of screening and rejecting defective products in the production and processing of green beans, an automated online screening system was designed based on the machine vision technology. The combing mechanism in the hardware device of the system arranged the green bean products on the conveyor belt in an orderly manner, making it a waterfall-style single-row free-fall motion. In the process of falling, the upper computer controlled two linear arrays of CCDs installed in high and low positions to obtain single-sided images of each green bean from the front and rear directions. The software system could process …
Isolation, Identification And Its Biological Activity Analysis Of The Polysaccharide In Passiflora Edulis Sims Leaves From Alkali Extracts, Li Xia, Liu Cheng-Xin, Huang Yan, Mo Guan-Lan, Guan Yuan
Isolation, Identification And Its Biological Activity Analysis Of The Polysaccharide In Passiflora Edulis Sims Leaves From Alkali Extracts, Li Xia, Liu Cheng-Xin, Huang Yan, Mo Guan-Lan, Guan Yuan
Food and Machinery
The residue of Passiflora edulis Sims leaves after hot water extraction was used as material. Polysaccharide was extracted from the residue by using NaOH alkaline solution, followed by separation of ion-exchange chromatography. The physicochemical properties of polysaccharide were determined and analyzed by IR, HPLC and gel permeation chromatography, and then its hypoglycemic and anticoagulant were studied. The results showed that APEL was separated by DEAE-52 cellulose ion-exchange chromatography to obtain the APEL-1, APEL-2, APEL-3, the APEL and its separated components all have typical characteristic peaks of polysaccharides, mainly composed of arabinose, glucose, galactose, xylose, rhamnose, glucuronic acid. The molecular weights …
Preparation Of Citrus Essential Oil Nanoemulsions And Its Antibacterial Activity Against Staphylococcus Aureus, Jiang Shu-Ge, Hou Yu-Hao, Liu Jian, Li Gao-Yang, Fu Fu-Hua, Shan Yang
Preparation Of Citrus Essential Oil Nanoemulsions And Its Antibacterial Activity Against Staphylococcus Aureus, Jiang Shu-Ge, Hou Yu-Hao, Liu Jian, Li Gao-Yang, Fu Fu-Hua, Shan Yang
Food and Machinery
Citrus essential oil, as a natural extract with a broad-spectrum antibacterial effect, can effectively inhibit the growth of food-borne pathogens, but its wide application is limited due to its easy volatilization and poor water solubility. In this study, through the inhibition zone diamater test of three kinds of citrus (bergamot, sweet orange, honey pomelo) essential oilswith good antibacterial effect on Staphylococcus aureus wasusedas the oil phase. Tween 80 was used as the emulsifier, with deionized water used as the water phase, and the nanoemulsions was prepared by phase transformation method. According to the pseudo-ternary phase diagrams, the formulas of three …
Optimization Of The Extraction Process Of Parvalbumin From Pseudosciaena Crocea, Lu Chun-Xia, Yang Liu-Ming, Chen Shi-Da, Zhang Hui-En, Yang Hua
Optimization Of The Extraction Process Of Parvalbumin From Pseudosciaena Crocea, Lu Chun-Xia, Yang Liu-Ming, Chen Shi-Da, Zhang Hui-En, Yang Hua
Food and Machinery
By measuring the yield of parvalbum, a kind of extraction solution of parvalbumin from Pseudosciaena crocea was screened out, and the relative extracting process was optimized. The results showed that when the extraction time was 42 h, the extract concentration was 72 mmol/L; the pH of the extract was 8, and the ratio of material to liquid was 1∶180 (g/mL); the extraction temperature was 50 ℃, and the extraction rate of parvalbumin reached 0.174 2%. Parvalbumin was then separated and purified by anion gel column chromatography, and its molecular weight was determined to be 12 kDa by Western blot analysis.
Isolation And Identification Of Analgesic Effects Of The Lycopodium Japonicum Thunb Polysaccharide, Tian Jia-Bao, Xu De-Ping
Isolation And Identification Of Analgesic Effects Of The Lycopodium Japonicum Thunb Polysaccharide, Tian Jia-Bao, Xu De-Ping
Food and Machinery
Explore the analgesic effects and active components of Lycopodium japonicum Thunb. Ethanol extraction, water extraction and ethanol precipitation were used to obtain different extracts of Lycopodium japonicum Thunb. Using acetic acid writhing and hot plate models, using mouse writhing reaction time and licking rear feet time as indicators, the analgesic components were screened and analyzed by nuclear magnetism. The water extract of Lycopodium japonicum Thunb has analgesic effect. After further analysis and screening, it is found that the analgesic components of Lycopodium japonicum Thunb are polysaccharides. A single component polysaccharide is obtained from the crude polysaccharides, and its structure is …
Total Synthesis Of Lycopene Based On Dodecatrienal, Chen Guo, Yan Ri-An, Li Hai-Mei, Zhou Hua, Li Chun-Zhi
Total Synthesis Of Lycopene Based On Dodecatrienal, Chen Guo, Yan Ri-An, Li Hai-Mei, Zhou Hua, Li Chun-Zhi
Food and Machinery
Diethyl [(1E,3E,5E)-2,6,10-trimethylundeca-1,3,5,9-tetraen-1-yl]phosphonate (9) was synthesized via a condensation between tetraethyl methylenebis(phosphonate) (7) and 6,10-dimethyl-3,5,9-undecatrien-2-one(8) by Wittig-Horner reaction, (3E,5E,7E)-3,8-dimethyldeca-3,5,7-trienedial (5) was prepared from (E)-tetraethyl but-2-ene-1,4-diylbis-(phosphonate)(2) and 4,4-dimethoxy-2-butanone (3) by Wittig-Horner reaction followed by hydrogenation. Lycopene was synthesized from diethyl [(1E,3E,5E)-2,6,10-trimethylundeca-1,3,5,9-tetraen-1-yl]phosphonate(9)and(3E,5E,7E)-3,8-dimethyldeca-3,5,7-trienedial(5) by Wittig-Horner reaction，the structure of products was confirmed by NMR, HRMS/GC-MS and IR techniques. The total yield was 16.7%.
The Effect Of Drying Methods On The Microscopic Properties, Ingredients And Antioxidant Activity Of Poria Cocos Products, Xiao Yang-Bo, Liu Qi, Peng Yi-Si, Xiong Shi-Jun, Peng Guo-Ping
The Effect Of Drying Methods On The Microscopic Properties, Ingredients And Antioxidant Activity Of Poria Cocos Products, Xiao Yang-Bo, Liu Qi, Peng Yi-Si, Xiong Shi-Jun, Peng Guo-Ping
Food and Machinery
In this research, vacuum freeze-drying, constant temperature of 40 ℃，constant temperature of 60 ℃, constant temperature of 100 ℃, constant temperature of 120 ℃, sun drying and variable temperature drying with air energy were used to dry Poria cocos, and the effects of different drying methods were studied on mycelium microscopic characteristics, water-soluble polysaccharide content, water-soluble protein content, alcohol-soluble protein content and antioxidant activity of Poria cocos. Results: The Poria cocos mycelium of variable temperature drying with air energy and sun drying were loosely arranged, and the Poria cocos mycelium of constant temperature drying was in a bond state. The …
Research Progress On Biological Activity And Molecular Mechanism Of Sea Cucumber Saponins, Zhong Jing-Shi, Zhang Jian, Liu Fang, Zhao Yun-Ping, Liu Kui, Wang Yi-Xin, Liu Hai-Chao, Wang Gong-Ming
Research Progress On Biological Activity And Molecular Mechanism Of Sea Cucumber Saponins, Zhong Jing-Shi, Zhang Jian, Liu Fang, Zhao Yun-Ping, Liu Kui, Wang Yi-Xin, Liu Hai-Chao, Wang Gong-Ming
Food and Machinery
In this review, the bioactivities and mechanisms of sea cucumber saponins, such as anti-tumor, anti-biofouling, atherosclerosis-improving, obesity-improving and obesity-related insulin resistance, Parkinson's disease-improving, osteoporosis-improv-ing and lifespan extension-promoting were summarized. Meanwhile, basic research, commercial application research and in-depth studies of sea cucumber saponins with modern technologies were also prospected.
Review On Accumulation And Metabolism Of Paralytic Shellfish Toxins In Shellfish, Hu Xiao-Qun, Xie Wan-Cui, Li Min, Dong Ze-Qun, Yang Xi-Hong
Review On Accumulation And Metabolism Of Paralytic Shellfish Toxins In Shellfish, Hu Xiao-Qun, Xie Wan-Cui, Li Min, Dong Ze-Qun, Yang Xi-Hong
Food and Machinery
The review describes the paralytic shellfish toxins (Paralytic Shellfish Toxins, PSTs) produced by harmful toxic algae. Species specificity of PSTs toxin accumulation content. The related research on paralytic shellfish toxins is reviewed from the accumulation, transformation, metabolism and purification of PSTs, and it is pointed out that efficient detoxification of aquatic products by means of optimization or combination of transient purification, biosorption, microbial metabolism and other purification methods is the future research direction.
Application Of Physical Modification In The Improvement Of Functional Properties Of Egg White Protein, Wu Yong-Yan, Wang Qia, Duan Wen-Shan, Zhang Yu-Feng, Huang Qun
Application Of Physical Modification In The Improvement Of Functional Properties Of Egg White Protein, Wu Yong-Yan, Wang Qia, Duan Wen-Shan, Zhang Yu-Feng, Huang Qun
Food and Machinery
This paper reviewed the research results of physical modification of egg white protein in recent years, described the role of physical modification methods on the function improvement of egg white protein, and analyzed the characteristics of various modification methods in improving the functional properties of egg white protein.
Advances In The Study Of In Vitro Simulated Digestion, Li Nuo, Zhang Dong-Jie, Zhang Gui-Fang, Lu Bao-Xin
Advances In The Study Of In Vitro Simulated Digestion, Li Nuo, Zhang Dong-Jie, Zhang Gui-Fang, Lu Bao-Xin
Food and Machinery
Different types of in vitro digestion conditions and digestion parts were categorized summarized in this review, and different types of in vitro simulated digestion tests were analyzed. The application of in vitro simulated digestion in different nutrients was also reviewed.
Research Progress Of 31P-Quantitative Nuclear Magnetic Resonance Spectroscopy In Food Analysis, Han Zhi, Gong Lei, Wang Hui-Xia, Jiang Feng, Zhu Xiao-Ling, Huang Zong-Qian, Cao Qi
Research Progress Of 31P-Quantitative Nuclear Magnetic Resonance Spectroscopy In Food Analysis, Han Zhi, Gong Lei, Wang Hui-Xia, Jiang Feng, Zhu Xiao-Ling, Huang Zong-Qian, Cao Qi
Food and Machinery
The research progress of quantitative nuclear magnetic resonance in phospholipids, phosphates, organophosphorus pesticides, purity identification were reviewed, which could provide reference for the further development of new applications of quantitative nuclear magnetic resonance in food analysis and detection.
Active Components, Physiological Functions And Application Progress Of Aronia Melanocarpa Fruit, Yin Xia-Wei, Wang Chu-Yan, Yang Liu-Qing, Cao Jiang-Wei
Active Components, Physiological Functions And Application Progress Of Aronia Melanocarpa Fruit, Yin Xia-Wei, Wang Chu-Yan, Yang Liu-Qing, Cao Jiang-Wei
Food and Machinery
In this paper, the active components of theAronia Melanocarpa fruits were introduced, and the physiological functions of Aronia Melanocarpa fruits were emphasized. The development status of the Aronia Melanocarpa fruits of was expounded. Finally, some suggestions on its application prospect were put forward, hoping to provide reference for the comprehensive utilization of the resources of Aronia Melanocarpa.
Research Progress In Physiological Function, Extraction And Application Of Anthocyanidin From Black Soybean Coat, Wei Xin-Yuan, Chen Hong-Yin, Cheng Dao-Mei
Research Progress In Physiological Function, Extraction And Application Of Anthocyanidin From Black Soybean Coat, Wei Xin-Yuan, Chen Hong-Yin, Cheng Dao-Mei
Food and Machinery
Summarized the physiological functions and separation and purification process of anthocyanidins from seed coat of black bean, and its application in food, medicine and cosmetics and other industries, and also prospected the future research and utilization of anthocyanidins from seed coat of black bean.
Research Progress On Detection Technology Of Chemical Components In Water-Based Emulsion Adhesives For Cigarette, He Jing-Yu, Li Guo-Zheng, Chen Yang, Qiu Jian-Hua, Zhang Ying-Hao, Liu Wen-Zhao, Wang Hong-Xia
Research Progress On Detection Technology Of Chemical Components In Water-Based Emulsion Adhesives For Cigarette, He Jing-Yu, Li Guo-Zheng, Chen Yang, Qiu Jian-Hua, Zhang Ying-Hao, Liu Wen-Zhao, Wang Hong-Xia
Food and Machinery
According to the different objects determinand, the detection methods were described, includes residue in production process, additives, and heavy metal impurities, etc. in water-based emulsion adhesives for cigarette. And the development trend of detection methods of water-based emulsion adhesives for cigarette was also prospected.
Pickle And Other Condiment Recipes From Backyard Farmer, Wayne C. Whitney, Sue Ann Gardner
Pickle And Other Condiment Recipes From Backyard Farmer, Wayne C. Whitney, Sue Ann Gardner
Zea E-Books Collection
Compiled by Wayne C. Whitney, Extension Horticulturist University of Nebraska Extension Publication CC-245 (1972) With a new Preface by Sue Ann Gardner Here are the favorite pickle and other condiment recipes submitted by viewers of Backyard Farmer, a television program of the Extension Service, University of Nebraska College of Agriculture. On this program, questions pertaining to the home, yard and garden are answered by specialists in the areas of Horticulture and Forestry, Entomology, Plant Pathology and Agronomy. This publication resulted from an on-the-air request for pickle recipes. Some 536 recipes were received from interested viewers from Nebraska and surrounding states. …
Effects Of Γ-Polyglutamic Acid On Baking Properties Of Whole Wheat Frozen Dough, Wang Jia-Bao, He Song, Su Zi-Liang, Huang Mei-Feng, Yang Di, Yu Han, Huang Fu-Qiang, He Hong-Yan
Effects Of Γ-Polyglutamic Acid On Baking Properties Of Whole Wheat Frozen Dough, Wang Jia-Bao, He Song, Su Zi-Liang, Huang Mei-Feng, Yang Di, Yu Han, Huang Fu-Qiang, He Hong-Yan
Food and Machinery
The water holding capacity and anti-freezing activity of whole wheat frozen dough with the addition of γ-polyglutamic acid (γ-PGA) were studied by the water holding capacity of whole wheat flour and the survival ratio of yeast. The effect of γ-PGA on the baking quality of whole wheat frozen dough was studied by specific volume and texture of bread. The results showed that the addition of γ-PGA could improve the yeast survival ratio and fermentation height of whole wheat frozen dough, increase the specific volume and reduce the hardness of whole wheat bread. In addition, γ-PGA promoted the formation of large …
Study On Dna Barcoding Identification Technology Of Common Pathogenic Microorganisms In Food, Zhong Wen-Tao, Xu Yue, Wang Shu-Hao, Wang Fang-Mei
Study On Dna Barcoding Identification Technology Of Common Pathogenic Microorganisms In Food, Zhong Wen-Tao, Xu Yue, Wang Shu-Hao, Wang Fang-Mei
Food and Machinery
In order to explore the application prospects of DNA barcode technology in microbial identification, the 16S rRNA sequences of 8 common pathogenic microorganisms in food were compared. The PCR amplification, sequencing and database search were conducted followed by universal primers designing, which were purposed to establish a microbial identification method based on DNA barcode. The results showed that the variable region sequence of V3～V6 amplified provided sufficient resolution for Gammaproteobacteria Enterobacteriales, including Vibrionales, and Pseudomonadales to accurately distinguish pathogenic bacteria and related interfering bacteria, corresponding to Bacillibacteria (Bacillales) could be identified to the “genus” level.
Research Review And Development Prospects Of Food Supply Chain Traceability System Based On Blockchain, Ding Jin-Cheng, Wu Qing-Lie
Research Review And Development Prospects Of Food Supply Chain Traceability System Based On Blockchain, Ding Jin-Cheng, Wu Qing-Lie
Food and Machinery
In this paper, the relevant documents were screened out by subject word search on the Web of Science website, and the keyword co-occurrence knowledge map of the relevant documents was drawn using CiteSpace software to analyze these documents as a whole. Then the author studies the current development status of the traceability system of the food supply chain under blockchain technology, and finds that the combination of the internet of things and blockchain technology is becoming the mainstream trend in the development of the traceability system of the food supply chain. Finally, the future development trend of the traceability system …
Research Progress Of Molecularly Imprinted Electrochemical Sensors In The Field Of Determination In Food Safety, Han Shuang, Ding Yu-Xin, Leng Qiu-Xue, Yao Ai-Xin, Teng Fu, Qin Shi-Li, Du Ji-Wei, Liu Xiu-Zhi
Research Progress Of Molecularly Imprinted Electrochemical Sensors In The Field Of Determination In Food Safety, Han Shuang, Ding Yu-Xin, Leng Qiu-Xue, Yao Ai-Xin, Teng Fu, Qin Shi-Li, Du Ji-Wei, Liu Xiu-Zhi
Food and Machinery
This review summarized article reviews the preparation and classification of molecularly imprinted electrochemical sensors, as well as the practical application and development of food safety detection, and their development prospects were also prospected.
Research Progress Of Inhibitory Effects Of Polyphenolic Compounds On Xanthine Oxidase, Hong Xin-Yue, Wu Jian-Mei, Luo Xiao-Qiao, Liu Kai, Zhou Wei-Jie, Zhang Guo-Wen
Research Progress Of Inhibitory Effects Of Polyphenolic Compounds On Xanthine Oxidase, Hong Xin-Yue, Wu Jian-Mei, Luo Xiao-Qiao, Liu Kai, Zhou Wei-Jie, Zhang Guo-Wen
Food and Machinery
The inhibitory activities and types of polyphenolic compounds on xanthine oxidase and their interactions in the past five years was summarized in this review, and the structure-activity relationship, the structural modification and its development and application of metal complex were also prospected. This will provide some references for the research and development of polyphenolic compounds as lowing uric acid food functional factors and drugs.
The Flavor Characteristics Of Bayberry Wine And Glutinous Rice Bayberry Wine Were Analyzed Based On Gas Chromatography-Ion Migration Spectrum, Xian Ling-Zhi, Liu Jin-Yang, Lu Jin-Hua, Xie Ding
The Flavor Characteristics Of Bayberry Wine And Glutinous Rice Bayberry Wine Were Analyzed Based On Gas Chromatography-Ion Migration Spectrum, Xian Ling-Zhi, Liu Jin-Yang, Lu Jin-Hua, Xie Ding
Food and Machinery
The volatile components of glutinous rice bayberry wine and bayberry wine were compared by gas chromatography-ion migration spectrum, and the sensory evaluation was made at the same time. The volatile substances of bayberry wine mainly include ethyl butyrate, ethyl isobutyrate, ethyl orthocaproate, ethyl propionate, ethyl caprylate, glutaldehyde and 2-methylbutyraldehyde.The volatile substances of glutinous rice bayberry wine mainly include: ethyl isovalerate, ethyl valerate, isobutyl acetate, leaf alcohol acetate, ethyl lactate, propyl aldehyde, octyl aldehyde, trans-2-hexenal aldehyde, 3-hydroxy-2-butanone and diisobutyl ketone, etc. The composition of the two samples was significantly different. The volatile matter of glutinous rice bayberry wine was more abundant …
Comparison Of Nutritional, Flavor And Functional Characteristics Of Tibetan Yak Butter At Different Altitudes, Xie Si-Wei, Liu Chun-Ai, Sun Shu-Guo, Luo Zhang, Yang Fei-Yang
Comparison Of Nutritional, Flavor And Functional Characteristics Of Tibetan Yak Butter At Different Altitudes, Xie Si-Wei, Liu Chun-Ai, Sun Shu-Guo, Luo Zhang, Yang Fei-Yang
Food and Machinery
The fatty acid composition, volatile components, rheological properties and antioxidant activity of yak butter at different altitudes (2 500~2 800 m, 3 500~4 000 m and above 4 300 m) in Tibetan were analyzed and compared. The results showed that altitude had significant effects on fatty acid composition, volatile components, rheological properties, and antioxidant activity (P<0.05). The unsaturated fatty acid content of yak butter at altitude of 2 500~2 800 m was the highest. Yak butter with an altitude of more than 4 300 m had pure smell and best flavor quality. Yak butter at altitudes of 3 500~4 000 m had the best fluidity. Yak butter at different altitudes had different antioxidant abilities, among which yak butter at altitudes ranging from 2 500 m to 2 800 m had the strongest DPPH free radical (66.99 mmol/100 g Trolox), hydroxyl free Trolox (26.71 mmol/100 g Trolox), superoxide anion scavenging ability (22.85%), and iron ion chelating antioxidant ability (1.41%).
Assessment Of The Edible Safety Of Licorice Oil, Dou Kang-Ning, Dong Bin
Assessment Of The Edible Safety Of Licorice Oil, Dou Kang-Ning, Dong Bin
Food and Machinery
The toxicology of licorice oil was researched through the acute toxicity test of mice, genotoxicity test of mouse sperm deformity and subacute toxicity test, and made a safety evaluation on it. The experimental results showed that the acute oral LD50 of licorice oil on mice was greater than 15.0 g/kg·BW, which was classified as non-toxic. The mouse sperm deformity genetic toxicity test was negative, indicating that the test substance had no mutagenic effect. No abnormal changes in animal health status, biochemistry, hematology indexes and organ tissue morphology were observed in the 30-day feeding experiment. Based on this, it was …