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Articles 4711 - 4729 of 4729
Full-Text Articles in Agriculture
Development Andchallenge Of 3d Print In The Food Industry, Li Guangling
Development Andchallenge Of 3d Print In The Food Industry, Li Guangling
Food and Machinery
With the rapid development of 3D printing technology, its applications expand into the field of architecture, industrial design and orthopedic from the traditional mold manufacturing. The cost reduction is benefited from the development of opening hardware technology. In the food industry, 3D food printing will have a profound impact on shortage of food supply, individual needs. But there are also many challenges in material limitations, taste, safety, cost and psychological disorders which 3D food printing must face.
The Legal Norms Of Food Safety Supervision By The Media, Li Xiaohua
The Legal Norms Of Food Safety Supervision By The Media, Li Xiaohua
Food and Machinery
The role of media supervision on food safety is enhanced increasingly. However, media reports on food safety in many cases exist problems of not objectively, not timely, flaws in processing mode and etc.. In order to solve these problems, analyze the reasons there must be generated, the causes of the corresponding problem from the perspective of legal norm, and for these reasons, pointed out that the state should be clear media food safety supervision power in legal norm exists, the establishment of legal accountability mechanism of malicious false reports, legal segregation mechanism of ethics bad media practitioners and the establishment …
Comparative Studies Of Legal Regulation Of Genetically Modified Food And Its Inspiration, Chen Yang
Comparative Studies Of Legal Regulation Of Genetically Modified Food And Its Inspiration, Chen Yang
Food and Machinery
GM food's safety is controversial since its birth. The USA and the EU gives us many experiences such as the fundamental ideas of regulation, the subject of supervision, identification system, and legislative regulation and so on. It's necessary to make a sound system of laws and regulations to guard GM food as well as a reform of supervision system of GM food. Besides, It should be optimized that the institutional settings and construct an international coordination mechanism of GM food.
Experience And Enlightenment Of Food Safety Supervision In United States And The European Union, Gu Guiqin
Experience And Enlightenment Of Food Safety Supervision In United States And The European Union, Gu Guiqin
Food and Machinery
In recent years, food safety accidents arise endlessly in our country, and it exposed the safety supervision system in our country is still need further perfection. Some countries and regions outside of our country started exploration and practice in the field of food safety regulation earlier, and many of them have accumulated rich experience. The United States, the European Union and other countries and regions in the food regulatory reforms, food safety information transparency, security regulatory legislation food authentication, etc., has accumulated rich experience. Our country can analyze their food safety regulatory experience and summarize to our enlightenment, further reflection …
Teaching Reform And Practice Of Food Nutrition Based On Constructivism, Nie Xiaohua, Sun Peilong, He Jinzhe, Meng Xianghe
Teaching Reform And Practice Of Food Nutrition Based On Constructivism, Nie Xiaohua, Sun Peilong, He Jinzhe, Meng Xianghe
Food and Machinery
Food nutrition is an important foundation course of food science and engineering. In order to improve the teaching quality, the teaching reform and practice was developed on the basis of the content, style and practice by using constructivism theory. It stimulated the students’ subjective initiative and practice competence, and. good teaching effect has been received.
Some Discussions On Improving Path Of China's Food Safety Supervision Mechanism, He Li
Some Discussions On Improving Path Of China's Food Safety Supervision Mechanism, He Li
Food and Machinery
The food safety law of the People's Republic of China (revised draft) will use the most stringent regulations, the supervision of food safety but not edible agricultural products should be brought into the draft regulation scope, and it certainly gave food regulatory loopholes. Edible agricultural products should be brought into the draft regulation, there is no obstacle on the legislation, but so will bring the government law enforcement ability insufficiency, the rise in the cost of law enforcement, law enforcement measures defects and a series of practical problems. Therefore, the key to solve the problem lies not in the legislation, …
Change Pattern Of Nutrition Composition During Germination Of Three Kind Of Soybean, Wang Hongtao, Chen Cheng, Yu Fang, Chen Baohong
Change Pattern Of Nutrition Composition During Germination Of Three Kind Of Soybean, Wang Hongtao, Chen Cheng, Yu Fang, Chen Baohong
Food and Machinery
The nutrient compositions’ change of green beans, black beans, soybean were studied during sprouting in order to provide experimental basis for the sprouting soybean food production and processing. Control soybean germination conditions by using a certain temperature and humidity, regular sampling and assay sprouted soybean’s crude protein, crude fat, reducing sugar, Vc and isoflavone’s content. The results show that: the protein content of green beans, soybean and black beans after seven days’ germination increased by 24.03%, 24.28% and 22.88% respectively than after one day’s germination, the reducing sugar content increased by 129.06%, 127.17% and 125.73% respectively; the Vc content increased …
Effects Of Ultra-High Pressure Treatment On Microstructure Of Cooked Chicken Breast, Wang Zhijiang, Jiang Aimin
Effects Of Ultra-High Pressure Treatment On Microstructure Of Cooked Chicken Breast, Wang Zhijiang, Jiang Aimin
Food and Machinery
The changes of microstructure of cooked chicken breast treated by ultra-high pressure treatment(UHP) were observed, for the further study of UHP on cooked chicken breast. Results indicated that the gap between the muscle fibers decreased, endomysial disappeared gradually, and the structure of muscle fibers was more closely. Meanwhile, muscle fiber diameter and rate of juice leakage increase could be resulted from UHP significantly. Myofibril was fragmented and gelated obviously when the pressure was over 400 MPa. The microstructure of cooked chicken breast treated by UHP could explain the changes of jucie leakage, texture and edible quality.
Study On Test Methods Of Crispness Rice Candy, Zhao Zijun, Jia Lirong, Li Changjiang, Gao Hong
Study On Test Methods Of Crispness Rice Candy, Zhao Zijun, Jia Lirong, Li Changjiang, Gao Hong
Food and Machinery
The physical properties test of the crunchy rice candy was carried out with a texture analyzer under compression mode. The crispness of the crunchy rice candy was tested using the sensory evaluation method and was adopted the compression mode a texture analyzer. Spss statistical analysis software was applied to the data of crispness sensory eveluation and texture test. Subsequently, the forecast model was constructed for the crunchy rice candy crispness by analyzing the correlation between the data of crispness sensory eveluation and texture test. The results showed that:the best testing speed was 1.0 mm/s, the compression deform deformation was 50%.The …
Adsorption Conditions Optimization Of The Attapulgite On Lactobacillus Cells, Zhao Yuping, Tang Zixin, Yang Li, Feng Yunqi
Adsorption Conditions Optimization Of The Attapulgite On Lactobacillus Cells, Zhao Yuping, Tang Zixin, Yang Li, Feng Yunqi
Food and Machinery
The best adsorption conditions of the attapulgite on Lactobacillus cells were optimized. Different kinds and concentrations of acids and alkalis were used to pretreat the attapulgite, the results showed that 1 mol/L H3PO4 was the best. In pH 6, 0.4 mol/L phosphate buffer system, adsorption of attapulgite on Lactobacillus cells basically completed in 60 min, and reached to the adsorption equilibrium. Adsorption of attapulgite on Lactobacillus cells could well fit the Langmuir adsorption isotherm equation. With the increase of temperature, the equilibrium adsorption of attapulgite on Lactobacillus cells increased higher, which was an endothermic process. When Lactobacillus …
Improvement And Simulation On Material Removing Mechanism Of Aluminum Foil Separator, Zheng Yahong, Li Jiqiang, Zhang Xuechang, Sun Zhongjie
Improvement And Simulation On Material Removing Mechanism Of Aluminum Foil Separator, Zheng Yahong, Li Jiqiang, Zhang Xuechang, Sun Zhongjie
Food and Machinery
Structure of material removing mechanism was improved for the defects of original aluminum foil separator. In this structure transformation, the original cylinder drive is replaced by cam mechanism, forming a new type of material removing mechanism. In the Pro/e environment, surrounding and columniform cam of material removing mechanism conducted parametric design. In Mechanism module, through the motion simulation and measurement verification of material removing mechanism, the relative position of the two cams can be adjusted, ultimately reducing the design cycle and providing a reference for the structure optimization in the later period.
Effect On Preservation Of Fresh-Cut Lettuce By Ozonated Water Combined With Modified Atmosphere Packaging, Yu Jiangtao, Xie Jing
Effect On Preservation Of Fresh-Cut Lettuce By Ozonated Water Combined With Modified Atmosphere Packaging, Yu Jiangtao, Xie Jing
Food and Machinery
Investigated, ozonated water combined with modified atmosphere packaging on preservation of fresh-cut lettuce stored at 4 ℃. Results indicated that ozonated water treatment combined with modified atmosphere packaging had prominent effect of controlling the reproduction of bacterial, the decline of water content , the degradation of chlorophyll and the activity of polyphenol oxidase (PPO), reducing its rotten, wilting, yellowing and browning rate. This method maintained high Vc content and sensory quality of fresh-cut lettuce at the same time. Also, it extended shelf-life of fresh-cut lettuce and kept its commodity value at 14th day.In addition, results also indicated that after …
Study On Effects Of Antioxidant Compounds On Stability Of Linseed Oil, Wang Jin
Study On Effects Of Antioxidant Compounds On Stability Of Linseed Oil, Wang Jin
Food and Machinery
Using the accelerated oxidation test, this study was conducted to investigate the effects of different combinations of natural antioxidants with synthetic antioxidants on the stability the shelf-life of linseed oil by examining the changes in its acid value and peroxide value. The results showed that a combination of 0.04% oleaginous rosemary, 0.018% butyl hydroxy anisd and 0.018% propyl gallate was found to have the best antioxidant activity. Comparisons of the changes in acid value of linseed oil before and after alkali refining revealed that adding 0.6 or 0.7 g of sodium hydroxide to 4g of linseed oil and allowing them …
Study On Antibacterial Activity Of Phenol Hydroxyl From N-Aryl Schiff Cos Derivatives, Han Yongping, Gong Ping, Li Keyi
Study On Antibacterial Activity Of Phenol Hydroxyl From N-Aryl Schiff Cos Derivatives, Han Yongping, Gong Ping, Li Keyi
Food and Machinery
The N-aryl Chitooligosaccharides (COS) derivatives were firstly synthesized with Benzaldehyde, salicylal and 3,4-two hydroxy benzaldehyde, subsequently was quaternized to enhance its water solubility.The chemical structures of all COS derivatives were characterized by ATR-FTIR or 1H NMR. The antibacterial studies of these COS derivatives were carried out by the inhibition zone diameters methods against E.coli, S.aurueus and P.aeruginosa bacteria. The antibacterial activity results showed N-3,4-two hydroxy benzaldehyde Schiff’s base COS > N-salicylal Schiff’s base COS > N- Benzaldehyde Schiff’s base COS> COS. In comparison to the COS derivatives chemical structure, it was found that the phenol hydroxyl group from N-aryl Schiff COS …
Antioxidant Activity Of Hydrolysate From Corn Glutelin By Protamex, Liu Yue, Liu Xiaolan, Zheng Xiqun, Zhou Limin
Antioxidant Activity Of Hydrolysate From Corn Glutelin By Protamex, Liu Yue, Liu Xiaolan, Zheng Xiqun, Zhou Limin
Food and Machinery
The molecular weight distribution and antioxidative activities of corn glutelin hydrolysate by Protamex during hydrolysis process, corn glutelin as raw material, were investigated. The results showed that the highest antioxidant activities was exhibited at the hydrolysis time of 120 min, with molecular weight distribution among 6 511.51~307.32 Da and peptides component 94.36%. DPPH radical scavenging activity, superoxide anion scavenging activity, hydroxyl radical scavenging activity, reducing power and Fe2+-chelating activity of hydrolysate were 58.86%, 82.64%, 37.21%, 0.236 and 29.92%, respectively.
Off-Gas Analysis In Fermented Foods Industry, Dong Kewu, Li Lu
Off-Gas Analysis In Fermented Foods Industry, Dong Kewu, Li Lu
Food and Machinery
Off-gas analysis plays an important role in the production of fermented foods. It is noninvasive and enables on-line process monitoring of the physiological status of the fermentation, including growth kinetics and substrate consumption. It also helps determine the optimum point to halt the process for maximum yield. Two kinds of analytical method，as well as the applications in fermented food such as amino acid, organic acid, enzymes and so on were introduced. Process mass spectrometer will be potentially used in various of fermented food production fields, which can monitor several fermenters simultaneously with long-term good stability and high-precision.
Research Status And Progress Of Ultra-Low Temperature Refrigeration Plant, Guo Yaojun, Xie Jing, Zhu Shixin, Wang Jinfeng, Tang Yuanrui
Research Status And Progress Of Ultra-Low Temperature Refrigeration Plant, Guo Yaojun, Xie Jing, Zhu Shixin, Wang Jinfeng, Tang Yuanrui
Food and Machinery
Ultralow temperature of －40 ℃～－80 ℃ is mainly used in the fields such as food processing, petrochemical industry, biological pharmacy and scientific experiments. The ultralow temperature refrigeration system and the research progress with refrigerant and compressor were introduced. Based on the comparison with the current research at home and abroad. the future development of ultra-low temperature refrigeration unit can be optimized from the auto-cascade refrigeration system, and the natural refrigerants as a substitute can also be concerned, further studies for the compressor inverter technology and other aspects of CO2 compressors’ performance.
Advances In Heat And Mass Transfer Models Of Microwave Freeze-Drying, Yan Shasha, Duan Xu, Ren Guangyue, Liu Wei
Advances In Heat And Mass Transfer Models Of Microwave Freeze-Drying, Yan Shasha, Duan Xu, Ren Guangyue, Liu Wei
Food and Machinery
Microwave freeze-drying is a rapid dehydration technique that can be applied to certain foods, particularly to seafoods, and fruits and vegetables. MFD involves much less drying time and energy consumption than conventional freeze-drying methods, and also improves product quality. The article presents the principles of microwave freeze-drying, the research progress of heat and mass transfer mathematical simulation at home and abroad, the detection technology online, and the dielectric properties of materials taken into account in the drying process simulation. After analyzing the problems, the trend of numerical simulation of freeze-drying is predicted.
Progress On Aflatoxin Removing Technique, Cao Ming, Fan Mingtao
Progress On Aflatoxin Removing Technique, Cao Ming, Fan Mingtao
Food and Machinery
Aflatoxin B1 is the best toxicity and carcinogenicity in the aflatoxin, and it is listed inⅠA level carcinogens by international tumor research institutes. Recently, it becomes the hot spot on how to get a method with high efficient, safe for aflatoxin removing. Meanwhile, summarizes the technologies for aflatoxin removing by physical, chemical and biological methods in this paper, including physical adsorption, extrusion, irradiation, microwave degradation, ozone degradation, ammonia fumigation, biological adsorption, biodegradable etc.. Moreover, the development of aflatoxin B1 removing is also prospected.