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Articles 511 - 540 of 548
Full-Text Articles in Food Biotechnology
Comparison Sensory Evaluation And Nutritional Value Of Taihu Crab Steamed By Different Methods, Zhu Shuang, Zhen Xin, Liu Mengyin, Xie Yunfei, Yao Weirong
Comparison Sensory Evaluation And Nutritional Value Of Taihu Crab Steamed By Different Methods, Zhu Shuang, Zhen Xin, Liu Mengyin, Xie Yunfei, Yao Weirong
Food and Machinery
The aim of this current study was to, under the premise of the best sensory quality, assess the effect of gas heated and electric steamers on the nutritional quality of Taihu crabs (Eriocheir sinensis). Based on the sensory evaluation of Taihu crabs, the optimal steaming conditions of two methods were obtained combined weight loss rates and water contents during cooking process, firstly. Under the steam condition with the best sensory quality, the nutritional quality i.e. basic nutritional components, vitamins, amino acids, fatty acids and functional components, subsequently were analyzed and assessed. The results showed that their weight loss rates increased …
Drying Characteristics Of Intermittent Microwave Heated Fresh-Cut High Mountain Yam Slice, Zhang Lihua, Wu Lifeng, Dang Xinkai, Dai Jianwu
Drying Characteristics Of Intermittent Microwave Heated Fresh-Cut High Mountain Yam Slice, Zhang Lihua, Wu Lifeng, Dang Xinkai, Dai Jianwu
Food and Machinery
In order to analyze the drying characteristics of the yam, a homemade batch microwave drying test system was designed, and the drying tests undertaken by using four factors and four levels, including microwave power, thickness of yam, heating and intermittent time. The changes and the characteristics of drying the fresh-cut yam slice heated intermittently by using microwave were analyzed. The results showed that microwave drying process generally included acceleration, constant speed and deceleration phases, and the drying color was the brightest heated for 7 s. Moreover, under this condition, the thickness of slice could impact the contractility seriously, therefore increasing …
Dietary Exposure Risk Assessment Of Two Kinds Of Phthalic Acid Esters In White Spirits, Zhang Jianhui, Zhang Li, Wang Xiali, Yuan Fengjun, Fang Xuanqi, Zhang Jihong
Dietary Exposure Risk Assessment Of Two Kinds Of Phthalic Acid Esters In White Spirits, Zhang Jianhui, Zhang Li, Wang Xiali, Yuan Fengjun, Fang Xuanqi, Zhang Jihong
Food and Machinery
According to monitoring data of white spirits of Hunan from 2013 to 2015, risk on exposure of two kinds of phthalic acid esters (DBP, DEHP) was assessed by using the probabilistic modeling method. The results indicated that the phthalic acid esters (DBP, DEHP) intake of Hunan residents is in the safe state generally. However, once the daily intake of adult drinkers exceeded 240 g/d, the percentile (95%) exposure of DBP would reach to the tolerable daily intake value (TDI) set by European Food Safety Agency (EFSA), and this would result in some risk.
Prediction On Protein Concentration Of Fresh Minced Meat Using Near-Infrared Spectroscopy, Zhao Wenying, Hua Jin, Zhang Lihua, Zhang Xinxin, Ji Zhifen, Chen Mengnan
Prediction On Protein Concentration Of Fresh Minced Meat Using Near-Infrared Spectroscopy, Zhao Wenying, Hua Jin, Zhang Lihua, Zhang Xinxin, Ji Zhifen, Chen Mengnan
Food and Machinery
Meat samples for calibration (n=210, pork, beef and mutton n=70, respectively) were scanned, over a NIR spectral range of 4 000～10 000 cm-1, and the chemical analysis were performed. Meat samples (n=90, pork, beef and mutton n=30 respectively) were scanned and analyzed for prediction of protein content. It was developed a PLS regression model assaying based on different spectral pretreatment methods. The best calibrations models of fresh meat samples showed relatively good predictability for protein, the coefficient of determination of calibrations samples was 0.954, the coefficient of determination of prediction samples was 0.929, the RMSEC and RMSEP were …
Application Of Electric Driven Membrane Extraction Method In The Detection Of Selenium In Vegetables And Fruits, Li Yong, Zhang Zhouyang, Tian Fang, Tang Jiaoyan, Deng Yong
Application Of Electric Driven Membrane Extraction Method In The Detection Of Selenium In Vegetables And Fruits, Li Yong, Zhang Zhouyang, Tian Fang, Tang Jiaoyan, Deng Yong
Food and Machinery
A new method for the determination of selenium（Se） in vegetables and fruits was developed using electric membrane extraction. The effects of several factors were investigated, such as Time spent, Consumption of reagents and Detection limit of sample. The results showed that the detection limit of sample was 0.005 mg/kg by spending few time and reagent. The recovery of Se was 92.4% on an average. Through the verification of the national standard reference materials, the experimental results meet the requirements of the uncertainty. The method is suitable for the detection of selenium in fruits and vegetables.
Astudy And Reference Of U.S. Food Inspection System, Yuan Yanfang, Shang Hongye, Chen Hui, Liu Jing, Ding Ning, Song Yuande, Yang Jiaying, Luo Jie
Astudy And Reference Of U.S. Food Inspection System, Yuan Yanfang, Shang Hongye, Chen Hui, Liu Jing, Ding Ning, Song Yuande, Yang Jiaying, Luo Jie
Food and Machinery
Aiming at the U.S. food inspection system, it was analyzed, in this paper, its characters from several aspects, including the structure, operation and management mechanism, inspection belief as well as the training for inspector. It provides some suggestions to improve the food inspection system in China. Therefore, it is significant to establish an inspection system based on food safety quality system and risk analysis, a comprehensive inspection data management system, as well as a unified training and certification system for food inspectors.
Function And Innovation Of Financial System In Safety Production Of Food Enterprise, Wang Jiaming
Function And Innovation Of Financial System In Safety Production Of Food Enterprise, Wang Jiaming
Food and Machinery
For the safe production of food enterprises, it must be related to a variety of financial system related to capital investment and cost accounting and other issues. Through preventive investment, education investment and accrued expense for safe production etc., good financial institution can produce the corresponding improvement for the food safety production. However, in the current financial system of the food production safety in enterprises, there are a series of problems, such as preventive investment and education investment has not be valued, accrued expenses without reliable security and other issues, and it is difficult to play a role in promoting …
The Practical Dilemma And Improvement Path Of The Criminal Law Regulation Of Food Safety, Liu Xiaodan
The Practical Dilemma And Improvement Path Of The Criminal Law Regulation Of Food Safety, Liu Xiaodan
Food and Machinery
At present, the crime of food producers is the main one in the food safety regulation system, and some crimes in food safety regulators as well as in transport and storage. However, There are still a series of dilemma about it, including the contrary to the trend of whole food safety process control, ignoring the public security character of food safety crime, and the neglect of its economic attribute of food safety crime. Therefore, we should increase the penalties according to the crime of endangering public safety and enforce the criminal law regulation. Furthermore, a severe fine penalty should be …
Analytical Dynamic Modeling Of A Top-Suspended Centrifuge Drum With Consideration Of Fluid-Structure Interaction, Yang Xujuan, Xu Guangheng, Li Yulong, Li Zhaojun
Analytical Dynamic Modeling Of A Top-Suspended Centrifuge Drum With Consideration Of Fluid-Structure Interaction, Yang Xujuan, Xu Guangheng, Li Yulong, Li Zhaojun
Food and Machinery
A top-suspended centrifuge drum was studied with consideration of fluid-structure interaction of the drum and massecuite. The analytical dynamic model was built by finite element method, and a triangle plate element was used to build the basket wall. Moreover, the triangular prism element of six nodes was also utilized to build the massecuite. Therefore, the natural frequencies with and without consideration of fluid-structure interaction and the natural frequencies were obtained respectively. The results showed that the natural frequencies with consideration of fluid-structure interaction were smaller than that without this consideration.
Study On Flow Field Of Polylactic Acid In The Nose Transition Body Of Co-Rotating Twin-Screw Extruder, Shi Junfeng, Huang Zhigang, Jiang Weixin, Li Menglin, Zhang Hongjian
Study On Flow Field Of Polylactic Acid In The Nose Transition Body Of Co-Rotating Twin-Screw Extruder, Shi Junfeng, Huang Zhigang, Jiang Weixin, Li Menglin, Zhang Hongjian
Food and Machinery
Three-dimensional isothermal flow field of polylactic acid(PLA) of the nose transitional body of length to diameter ratio is 441 experiment with a small meshing direction twin-screw extruder head by using the PALYFLOW software. The fields of velocity, pressure, shear rate and viscosity with different process parameters are analyzed and compared. Results showed that the flow field effect become better with the increase of the screw speed and the flow rate at the appropriate temperature，but compared with the increase of the screw speed, the increase of the melt flow was more beneficial to improve mixing and plasticizing effect of the extruder …
Design Of Automatic Nut Packing Machine With Rotary Multi-Station, Wang Fengyuan, Li Lan, Li Zhen, Nie Jiajin, Zhou Jun, Cao Shuo
Design Of Automatic Nut Packing Machine With Rotary Multi-Station, Wang Fengyuan, Li Lan, Li Zhen, Nie Jiajin, Zhou Jun, Cao Shuo
Food and Machinery
Considering solution for existing nut packing machines on the market with the problems, including non-multifunction, high demanding in area occupation and human labor, a rotary multi-station automatic nut packing machine was designed. The machine combined the function of collecting quantitative and bagging the nuts, sealing with thermoplastic plastics, packing paper-bag and automatic sealing of the box. The machine mainly consisted of three systems, i.e., the feeding system with rotary controllable quantitative mechanism, the bagging system of catching and opening bags, bagging, sealing of the bags and the packing, and the sealing system for the boxes. It was verified that 720 …
Design And Manufacture Of A New Type Self-Unloading Bone Dregs Removal Suspension Coop And Bone Dregs-Falling Proof Device, Yang Fangwei, Jia Wei, Zhang Chunhui, Li Xia
Design And Manufacture Of A New Type Self-Unloading Bone Dregs Removal Suspension Coop And Bone Dregs-Falling Proof Device, Yang Fangwei, Jia Wei, Zhang Chunhui, Li Xia
Food and Machinery
Designed a kind of the new type self-unloading bone dregs removal suspension coop and bone dregs-falling proof device. The new type self-unloading bone dregs removal suspension coop is mainly composed of a cage bottom ring and the bottom cover plate, cage barrel body, along the reinforcing ring, cage cover several main body. The new type suspension coop can ensure the safety and reliability of bone processing, providing a good solution for the problem of the traditional suspension coop that has a lock cover is not strict, the pin is easy to fall. The hanging structure of the traditional suspension coop …
Freshwater Fish Pneumatic Machinery To Head-Cutting Method Research, Liu Jing, Zhang Fan, Wan Peng, Tan Hequn
Freshwater Fish Pneumatic Machinery To Head-Cutting Method Research, Liu Jing, Zhang Fan, Wan Peng, Tan Hequn
Food and Machinery
Freshwater fish head before processing as a freshwater fish processing a difficult point in the process of automated processing, to head the processing effect directly affects and restricts the freshwater fish late deep processing of the quality of the products. This paper presents A use of pneumatic cylinders contour design tool for freshwater fish mechanical processing way to head, is designed and developed A pneumatic head machine prototype, to go head machine prototype meat rate and recovery rate of head as the main performance indexes, performance parameters affecting the freshwater fish head machine prototype of fish head positioning distance, the …
Design Of A New Microwave-Vacuum Dryer, Yang Xiaotong, Duan Xu, Ren Guangyue
Design Of A New Microwave-Vacuum Dryer, Yang Xiaotong, Duan Xu, Ren Guangyue
Food and Machinery
A new type of microwave and vacuum drying device combining waveguide and wave source cooling device was designed. This improvement helped to solve two big problems effectively, uneven distribution of microwave and wave source easily broken on heat. Because the material chamber is the intersection of microwave and vacuum chambers, material could be in microwave radiation as well as in vacuum environment. Thus, the material plates were hierarchical designed. On the one hand, they were easily tear down, on the other hand, material room space could be made full use. Moreover, the cold traps designed by modular to make it …
Structure Design And Heat Transfer Analysis Of Drying Tray Part Of Hot-Air Disc Dryer, Su Quanwei, Zhou Hang
Structure Design And Heat Transfer Analysis Of Drying Tray Part Of Hot-Air Disc Dryer, Su Quanwei, Zhou Hang
Food and Machinery
To make the food be dried better as well as improve the drying efficiency, based on the analysis of the working principle of rotary disc dryer, for its critical part drying tray, the geometry structure design, the stress and its deformation were analyzed. Moreover, the calculating formulas of the thickness of the steel material manufactured for the drying tray were also provided. After analyzing the heat transfer process between drying tray and bulk solids bed in the work, the heat transfer coefficient formula was then summed up. According to the relevant theory given in this study, rotary disc dryer was …
Design Of Personalized Ice Cream Machine Based On 3d Printing, Hong Jian, Wang Dongyan, Li Fei, Qin Guoxuan
Design Of Personalized Ice Cream Machine Based On 3d Printing, Hong Jian, Wang Dongyan, Li Fei, Qin Guoxuan
Food and Machinery
In order to meet the personalized needs of the individual’s desiring of ice cream, an ice cream machine was designed based on the rapid prototyping technology. This machine included transmission, mechanical structures and control system. A Z-axis drive module and a Core XY two-axis one were adopted by the transmission module. Moreover, the mechanical structure was constructed by a stirring module to mix the raw material uniformly, combining a platform to enable raw material to stack layer by layer and an extrusion mechanism moving in XOY plane. The control system composed of a mechanism motion and a temperature control. It …
Effect Of Mechanical Vibration During The Transportation Process On The Storage Quality Of Kiwi Fruit, Zhang Zhe, Zhang Zhiquan, Mao Li, Tian Jinjin, Hao Junjie, Li Limin, Mao Yiqiong
Effect Of Mechanical Vibration During The Transportation Process On The Storage Quality Of Kiwi Fruit, Zhang Zhe, Zhang Zhiquan, Mao Li, Tian Jinjin, Hao Junjie, Li Limin, Mao Yiqiong
Food and Machinery
Based on the actual situation in the transport process, the effects of mechanical vibration frequencies and acceleration on the storage quality of kiwi fruit was investigated. The change processes of storage quality of kiwi fruit were studied under five vibration frequencies of 10, 20, 30, 40, 50 Hz and three vibration accelerations of 2.5, 5.0 and 7.5 m/s2. Moreover the effects of mechanical vibration on the hardness, the content in internal soluble solids, titratable acid, VC, and MDA of each group of kiwi fruit have been analyzed. The results indicated that the hardness, titratable acid, V …
Early Warning Of Afb1 Contamination In Stored Maize By Monitoring Catalase Activity, Zhang Yaolei, Zhai Huanchen, Zhang Shuaibing, Cai Jingping
Early Warning Of Afb1 Contamination In Stored Maize By Monitoring Catalase Activity, Zhang Yaolei, Zhai Huanchen, Zhang Shuaibing, Cai Jingping
Food and Machinery
The early warning is significant forpreventing stored maize from aflatoxin B1 (AFB1) contamination. To reveal the relationship between the change of catalase activity and AFB1 contamination in stored maize, the storage experiments of maize were carried out at different temperatures and moisture contents. The results showed the increasing trend of catalase activity and contaminated AFB1 was accordant, which displayed a quadratic equation with the correlation coefficient of more than 0.95. The rates of catalase activity increase and AFB1 production by mould in maize could be affected by storage temperature and maize moisture content, but …
Effect Of Nano-Sio2 Modified Ldpe Film On Postharvest Quality Of Gonggan, Song Mubo, Fang Fang, Luo Zishen, Li Dong, Chen Zhenlin, Xuan Liting, Shuai Liang, Duan Zhenhua
Effect Of Nano-Sio2 Modified Ldpe Film On Postharvest Quality Of Gonggan, Song Mubo, Fang Fang, Luo Zishen, Li Dong, Chen Zhenlin, Xuan Liting, Shuai Liang, Duan Zhenhua
Food and Machinery
In order to study the effect of nano-SiO2 modified low density polyethylene (LDPE) film on Gonggan storage, the influences of unpacked, LDPE film and nano-SiO2 LDPE film packaging treatments on postharvest quality of Gonggan were investigated. The results showed that both of the packing materials could improve the postharvest quality of Gonggan, and nano-SiO2 LDPE film was better in slowing down the increase of the decay rate and weight loss ratio, and the decrease of firmness. Moreover, the nano-SiO2 LDPE film was found to be better in inhibited the accumulation of malonaldehyde (MDA), and maintained higher …
Research Of Air Distribution Characteristic For Single Evaporator Multiple Temperature Zones Refrigerated Truck, Zhao Yao, Tang Gangzhi, Zhu Sunke
Research Of Air Distribution Characteristic For Single Evaporator Multiple Temperature Zones Refrigerated Truck, Zhao Yao, Tang Gangzhi, Zhu Sunke
Food and Machinery
Compared to single temperature zones refrigerated truck, multiple temperature zones refrigerated truck is more comfortable with cargo demand and temperature changes. Air distribution in the truck cold room could affect its temperature significantly. In this paper, the influence of air distribution to temperature range in single evaporator multiple temperature zones refrigeration truck was studied based on CFD technology. Moreover, temperature non-uniformity problems were also analyzed. The results provided a theory basis for the design optimization of multiple zones refrigerated truck.
Refrigeration Monitoring System Of Ultra-Low Temperature Cold Storage Onfishing Boat Based On Virtual Instruments, Xu Minsheng, Xie Jing, Wang Jinfeng
Refrigeration Monitoring System Of Ultra-Low Temperature Cold Storage Onfishing Boat Based On Virtual Instruments, Xu Minsheng, Xie Jing, Wang Jinfeng
Food and Machinery
There are several problems in the ultra-low temperature refrigeration control system on the tuna fishing boat, including the low degree of automation, unsatisfactory monitoring effect and poor monitoring conditions. In order to solve these problems, a tuna fishing boat ultra-low temperature cold storage refrigeration monitoring system was designed and developed by using the virtual instrument technology, based on LabVIEW. This system achieved a real-time monitoring, and displayed a unit’s data and dynamic curves. Moreover, it also included a data processing and storage, a control parameter settings, an electronic expansion valve real-time status monitoring, a valve control and an output display. …
Control System Of Distributed Cabinet Based On Thermoelectric Cooler For Fruits And Vegetables, Zou Chidao, Lu Enli, Lu Huazhong, Zeng Zhixiong, Zhao Junhong
Control System Of Distributed Cabinet Based On Thermoelectric Cooler For Fruits And Vegetables, Zou Chidao, Lu Enli, Lu Huazhong, Zeng Zhixiong, Zhao Junhong
Food and Machinery
Preservation of environment temperature is an important factor to protect distribution quality of fruits and vegetables. In this paper, distributed cabinet based on thermoelectric cooler (TEC) for fruits and vegetables was studied while control system based on ATmega16 microprocessor of AVR series was designed. By using ICCV7 for AVR software platform and C program, software of control system was researched. After ambient temperature of distributed cabinet and water temperature of TEC system were acquainted, executions such as TEC, fans and pumps were control automatically by using a dual limit control methods. Persevered temperature of distributed cabinet and high temperature protection …
Application Of A New Type Of Fluorine Free Refrigerant Hcr22 In Food Refrigeration System, Liu Jinguang, Xiong Xubo, Wang Shiqing, Luan Mingchuan, Zhang Yan, Jiang Wenli
Application Of A New Type Of Fluorine Free Refrigerant Hcr22 In Food Refrigeration System, Liu Jinguang, Xiong Xubo, Wang Shiqing, Luan Mingchuan, Zhang Yan, Jiang Wenli
Food and Machinery
In order to explore the feasibility of the application of new fluorine free refrigerant in the existing refrigeration system, a traditional one based on R600a refrigeration, a testing equipment of new refrigeration system was designed. This new testing equipment was dominated by a cooling equipment, temperature tester and pressure detector. In this study, the refrigerant R600a replaced by a new type of fluorine free refrigerant HCR22, and the coefficient of performance and cold storage capacity were taken as indexes, and conducted an experiment for 12 h, the refrigerating capacity of two refrigerants in different quantity of charging ratio was studied. …
Extraction And Antioxidant Activity In Vitro Of Flavonoids In Cold Pressed Cake Of Zanthoxylum Armatum Dc. Prodr., Wang Chunxia, Pu Biao, Jiang Yan, Fu Benning
Extraction And Antioxidant Activity In Vitro Of Flavonoids In Cold Pressed Cake Of Zanthoxylum Armatum Dc. Prodr., Wang Chunxia, Pu Biao, Jiang Yan, Fu Benning
Food and Machinery
Response surface methodology was used to optimize the microwave- assisted extraction of flavonoids from cold pressed cake in Zanthoxylum armatum DC. Prodr， and the antioxidant activity in vitro of flavonoids were analyzed. The results showed that the optimum extraction process of flavonoids were： microwave power 506 W, microwave treatment time 256 seconds, ethanol concentration 75%, ratio of liquid to material 501. Under this condition, extraction ratio of flavonoids was 0.40%±0.04% ( in terms of rutin). The reducing power, the hydroxyl free radicals, DPPH free radicals, scavenging capacity of flavonoid extracts were increased gradually with the increasing of the mass concentration, …
Study On Isolation And Antioxidant Activity Of The Polysaccharide From Ganoderma Lucidum, Xu Xuefeng, Li Guijuan, Yan Hao, Zhang Yu, Zhang Jingchang
Study On Isolation And Antioxidant Activity Of The Polysaccharide From Ganoderma Lucidum, Xu Xuefeng, Li Guijuan, Yan Hao, Zhang Yu, Zhang Jingchang
Food and Machinery
Isolation, purification and antioxidant activity in vitro of polysaccharide from Ganoderma lucidum were studied. Polysac-charide was extracted from G. lucidum, and three fractions were isolated through ion exchange chromatography and allyl dextran gel chromatography from them, including GLPa-2, GLPb-1, and GLPc. The weight-average molecular weight was detected by gel permeation chromatographic, and then monosaccharide composition was detected by gas chromatography. The results were described as follows. The component parts of polysaccharides were composed of glucose, arabinose, xylose and mannose, with different containing rates, and the average molecular weight of GLPa-2, GLPb-1, GLPc was detected to be 3.65×105 Da, 3.87×10 …
The Analysis Of Resveratrol Contents And Their Antioxidant Activity In Different Varieties And Tissues Of Grapes, Chen Mengwei, Deng Qunxian, Zhang Jinrong, Lu Xiulan, Xia Hui, Wang Jin
The Analysis Of Resveratrol Contents And Their Antioxidant Activity In Different Varieties And Tissues Of Grapes, Chen Mengwei, Deng Qunxian, Zhang Jinrong, Lu Xiulan, Xia Hui, Wang Jin
Food and Machinery
The stems, skin and some varieties of grape seeds from six varieties classified as three kinds of color grape were used to extracted the resveratrol by organic solvent and then detected its content by HPLC. Moreover, the effect of resveratrol on DPPH radical and hydroxyl radical scavenging ability were also studied. The results showed that the resveratrol content in different grape varieties and tissue distributed differently, and the volume decreased in fruit stem, skin, and pip orderly. Furthermore, it was also found that the resveratrol content in the varieties of purple-black was the highest in the fruit skin, but it …
The Detection Of The Chemical Components In Oenanthe Javanica And Its Hypoglycemic Activity, Guo Xiaoqing, Wei Longhua, Dai Tiantian, W Uqing
The Detection Of The Chemical Components In Oenanthe Javanica And Its Hypoglycemic Activity, Guo Xiaoqing, Wei Longhua, Dai Tiantian, W Uqing
Food and Machinery
The chemical components of Oenanthe javanica from Guizhou and the hypoglycemic effect of its extracts on the diabetic mice induced by streptozotocin (STZ) was investigated in this paper. The chemical composition type in the wild O. javanica was detected in a single prediction experiment by using various chemical components of natural medicine. The total phenolic acids, flavonoids and sugar of O. javanica were determined by spectrophotometry. Diabetic mice model was established by STZ, and metformin was used as a positive control, the extracts from O. javanica was fed, blood glucose was measured. The results showed that O. javanica contained phenols, …
Effect Of Total Flavonoids From Perennial Lablab Sp. Hull On Immune Function In Mice, Cao Baiying, Jiang Xiujuan, Qi Yingxin, Chang Youquan
Effect Of Total Flavonoids From Perennial Lablab Sp. Hull On Immune Function In Mice, Cao Baiying, Jiang Xiujuan, Qi Yingxin, Chang Youquan
Food and Machinery
The effect of total flavonoids from Perennial Lablab sp. Hull(FPLH) on the immune function and antioxidant activity in vivo were studied. With index of immune organ, spleen lymphocyte proliferation function, phagocytic activity of macrophages, cytokine levels in serum(IFN-γ and IL-4), the activity of alkaline phosphatase in serum, the activity of SOD, GSH-Px and the level of MDA in serum as the evaluated indices, the immune function and antioxidant activities of FPLH in mice was studied. The results showed that the thymus index and spleen index of FPLH was higher than the control group by 12.34% and 8.67% respectively; the spleen …
Ultrasonic Enhancement Of Tartary Buckwheat Germination And The Production Of Nutrients In Sprouts, Wang Shunmin, Wang Jianfei
Ultrasonic Enhancement Of Tartary Buckwheat Germination And The Production Of Nutrients In Sprouts, Wang Shunmin, Wang Jianfei
Food and Machinery
Tartary buckwheat (Fagopyrum tataricum) seeds were treated using ultrasonic at different power and time and temperature. The exposed grains were germinated, then harvested after incubation on the 2rd, 4th, and 6th days. The effects of ultrasonic on the germination rate of the tartary buckwheat seeds and some nutrient compounds in the sprouts were detected, and the DPPH radical-scavenging activities of the seedlings were investigated. The results showed that with treatment of 280 W ultrasonic, at 20 ℃ for 35 min, the highest rates of initial (88.0%) and final (100.0%) germination were obtained after incubation. With the treatment of 240 W …
Ultrasonic-Assisted Extraction And Physicochemical Characteristics Of Collagen From Rabbit-Skin, Zhang Xiaojie, Zhang Yuhao, Ma Liang, Ma Mingsi, Zheng Hong, Sun Yi
Ultrasonic-Assisted Extraction And Physicochemical Characteristics Of Collagen From Rabbit-Skin, Zhang Xiaojie, Zhang Yuhao, Ma Liang, Ma Mingsi, Zheng Hong, Sun Yi
Food and Machinery
The application of ultrasonic irradiation to extract pepsin-soluble collagen from the skins of rabbit was investigated in this study. The results showed that the extraction rate of collagen using the ultrasonic irradiation was (83.69±0.51) % and the yield increased by 25% in comparison with the conventional pepsin isolation method. The result of polyacrylamide gel electrophoresis confirmed that the subunits structure of collagen using the ultrasonic irradiation was mainly of α1, α2 and β, without subunit degradation. Moreover, the ultraviolet spectrum exhibited a typical absorption peak at 217 nm, indicating that it greatly maintained the characteristics of type I collagen. Additionally, …