Effect Of The Heater Temperature On The Aroma Components Of Finished Tobacco,
2019
Technology Center of China Tobacco Yunnan Industrial Co., Ltd., Kunming, Yunnan 650024, China
Effect Of The Heater Temperature On The Aroma Components Of Finished Tobacco, Li Chao, Yuan Xiangyun, Li Da, Ge Wen, Wang Jiashou
Food and Machinery
Head space solid-phase microextraction (HS-SPME) coupled with chromatography-mass spectrometry (GC-MS) method was developed to study the effects of different tempera-ture of the heater on the composition and content of aroma components in the test samples of different batches of cigarettes. The results were as follows: ① A total of 35 core aroma components were detected in two batches of finished cut tobacco, of which batches X and Y contained 30 and 34 kinds respectively; ② 3-methyl-3-buten-2-one, 2-hexene-1-alcohol, 2-(butoxyethoxy)ethanol, Methyl palmitate and 3,5-dimethylphenol were undetected components in X, while 3-methyl-1,2-cyclopentadione was undetected components in Y. 1,2-propanediol was the highest content of …
Establishment And Application Of Prediction Model For Content Determination Of Mashed Potato In Noodles By Nir Spectroscopy,
2019
Biotechnology Institute of Guizhou Province, Guiyang, Guizhou 550006, China; Food Processing Institute of Guizhou Province, Guiyang, Guizhou 550006, China
Establishment And Application Of Prediction Model For Content Determination Of Mashed Potato In Noodles By Nir Spectroscopy, Lv Du, Dong Nan, Wang Mei, Wang Hui, Liu Yongxiang, Li Fei, Liu Jia
Food and Machinery
A fast determination method was established for content determination of mashed potato in noodles. Studied 170 potato noodles by near infrared spectroscopy and stoichiometry to establish prediction model by PLS. The result indicated that the prediction model based on wave number of 9 403.6～5 446.2 cm-1, and spectral pretreatment by the standard normal variate transformation (SNV) showed an excellent prediction accuracy. The external validation determinants was 0.956 4, the root mean square error of prediction was 3.73%, the slope was 1.029, and relative prediction deviation was 2.04. The results indicate that near infrared spectroscopy can be used as …
Preparation And Identification Of The Monoclonal Antibody Of Kunitz Trypsin Inhibitor From Soybean,
2019
College of Food and Bioengineering, Henan University of Science & Technology, Luoyang, Henan 471023, China; Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, Henan 450002, China
Preparation And Identification Of The Monoclonal Antibody Of Kunitz Trypsin Inhibitor From Soybean, Wang Yao, Li Yanhong, Cao Jinbo, Sun Yaning, Xing Yunrui, Chen Xiujin, Deng Ruiguang, Hu Xiaofei
Food and Machinery
To prepare monoclonal antibodies against soybean Kunitz trypsin inhibitor (KTI) with good immunological characteristics. BALB/c mice were used to immunize with 50 μg of KTI, the antiserum titer and sensitivity were identified via indirect ELISA and indirect competitive ELISA. The mice which serum has better titer and sensitivity were selected for cell fusing, then he hybridoma cell strain which stabilization secreted KTI monoclonal antibody (mAb) were screened. Thereafter, mAb was prepared by inducing ascites in vivo and identified the immunological characteristics. The result indicated that the NO.1 mouse was confirmed to produce the antibody with the highest titre, IC50 …
Quantitative Analysis Of Glycine Solutions By Terahertz Attenuated Total Reflection (Thz-Atr) Spectra,
2019
Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education, Heilongjiang University, Harbin, Heilongjiang 150500, China
Quantitative Analysis Of Glycine Solutions By Terahertz Attenuated Total Reflection (Thz-Atr) Spectra, Cheng Li, Ma Wei, Liu Qi, Ogawa Yuichi
Food and Machinery
Terahertz attenuated total reflection spectroscopy was employed to investigate the terahertz absorption spectra of different concentration glycine solutions within 20~450 cm-1 at room temperature. There are four clear absorption peaks at 65.56, 127.28, 173.56, 308.55 cm-1 respectively. The 2nd derivative spectra and the multiple linear regressions were employed to perform the quantitative analysis of the glycine solution concentr-ation. Randomly combine different wave numbers, the optimum ternary linear regression equation was gained. The R2 Adj was 0.990 3, the Root Mean Square Error (RMSE) was 0.005 7, the Root Mean Squares Error of Prediction (RMSEP) was 1.658 …
Evaluation Of The Uncertainty In The Determination Of Five Papaver Nudicaule Alkaloids From Hot Pot Food By Lc-Ms/Ms,
2019
Xi’an Institute for Food and Drug Control, Xi’an, Shaanxi 710054, China
Evaluation Of The Uncertainty In The Determination Of Five Papaver Nudicaule Alkaloids From Hot Pot Food By Lc-Ms/Ms, Wei Xinghua, Li Xiaohong, Dong Manman, Sun Xiao, Zhang Diyue, Zhang Yafeng
Food and Machinery
According to the procedure for uncertainty assessment described in JJF 1059.1—2012 “Evaluation of uncertainty in chemical analysis measurement” and CNAS—GL06—2019 “Guidance on evaluating the uncertainty in chemical analysis”, a mathematical model was established, and an analytical method for the determination of uncertainty of morphine, codeine, papaverine, narcotine and thebaine in chafing dish food by LC-MS/MS was established. The results showed that the synthesis of relative standard uncertainty for papaverine, narcotine, thebaine, morphine and codeine were 5.1×10-2, 5.0×10-2, 5.8×10-2, 8.4×10-2, and 8.5×10-2, respectively; the main factors affecting the uncertainty of measurement …
Simultaneous Determination Of Flavonoids In Fruits Of Rosa Davurica Pall. By Hplc And Measurement Of Their Activities In Vitro,
2019
Jilin Institute of Chemical Technology, Jilin, Jilin 132022, China
Simultaneous Determination Of Flavonoids In Fruits Of Rosa Davurica Pall. By Hplc And Measurement Of Their Activities In Vitro, Di Song, Zhong Fangli, Zhang Xiaoli, Wang Xiaolin, Lei Yongping
Food and Machinery
Simultaneous determination of four flavonoids in extracts of the fruits of Rosa davurica pall.(FRDP) by high performance liquid chromatography (HPLC) was carried out, and the in vitro activities of extracts of FRDP, four flavonoids and their compound compatibility were measured by UV method. The results showed that the contents of hyperoside, rutin, quercetin and luteolin of the extract of FRDP were 607.98, 450.63, 187.32 and 12.68 μg/g respectively. The extracts of FRDP, four flavonoids and their compound compatibility all have certain antioxidant activities in vitro, and the activity of extracts of FRDP was stronger than that of compound compatibility. However, …
Risk Assessment Of Pesticide Residues In Muskmelon In Xinjiang,
2019
College of Food Science and Pharmacy, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China; Institute of Agricultural Quality Standard and Testing Technology, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang 830091, China; Laborator
Risk Assessment Of Pesticide Residues In Muskmelon In Xinjiang, Wei Kaili, Zhou Xiaolong, Yan Qiaoli, Tao Yongxia, Wang Cheng
Food and Machinery
To evaluate the dietary risk level of pesticide residues in muskmelon in Xinjiang and identify the types of pesticide residues with relatively high risks. Based on the research of 127 muskmelon samples of the 2-year-producing in Xinjiang, 60 kinds of pesticide residues were analyzed by chronic, and the acute dietary exposure assessment, and the dietary risk levels were evaluated. Moreover, the usage of veterinary drug residue council sort veterinary drug residue risk matrix, and the pesticide residue in high-risk types were discussed. The results showed that 10 kinds of pesticide residues, icluding phenyl ether metronidazole, chlorpyrifos, chlordimeform, and chlorphenidine, were …
Survey And Management Dimension Of Food Safety Management In China,
2019
Party School of The Changshou District of the Communist Party of China, Chongqing 401220, China
Survey And Management Dimension Of Food Safety Management In China, Luo Hui
Food and Machinery
At present, based on the predicament of global food safety governance and the requirement of China to promote the improvement of social governance system and the modernization of governance capacity, China's food safety management has a high implementation efficiency in the construction of system and the promotion of government-led system practice. However, at the level of food safety governance, there are still some problems, such as the degree of information disclosure to be further expanded, the lack of operability of the food recall system, the disunity of the main body caused by the administrative supervision system, and the lack of …
Control Strategy Of Beer Fermentation Temperature Based Onsmith Predictable Compensation,
2019
College of Electrical Engineering and Information, Anhui University ofTechnology, Maanshan, Anhui 243032, China
Control Strategy Of Beer Fermentation Temperature Based Onsmith Predictable Compensation, Gao Jin, Zhang Jiayan, Feng Xugang
Food and Machinery
Beer fermentation is an extremely complicated process, in which the control of fermentation temperature has a great influence on the final taste and quality of the beer. The temperature control of the fermentation liquor has the characteristics of large time delay, nonlinear and staged characteristics, and they cause the temperature of the fermented liquor in the fermentation tank to fluctuate frequently with large. According to the technological characteristics of the beer fermentation temperature control system, a nonlinear PID control strategy was processed based on Smith predictable compensation. After modeling the beer fermentation temperature control system and performing Matlab simulation analysis, …
Comparison And Reconstruction Of Localization Between Chinese And Australian Meat Packaging,
2019
Fine Arts Academy of Hunan Normal University, Changsha, Hunan 410012, China
Comparison And Reconstruction Of Localization Between Chinese And Australian Meat Packaging, Wu Yuqing, Tian Zhuoming, Huang Xueyao
Food and Machinery
patterns, color and words are common design languages in packaging design. This paper aims to find out the problems existing in the domestic meat packaging design by referring to the Australian meat packaging design following comparison made between the meat packaging design of China and Australia. And then puts forward the optimization approach to the domestic meat packaging design and theoretical suggestions for the promotion and popularization of domestic meat packaging.
Design And Motion Analysis Of Main Cam Of High Speed Paper Picking Mechanism,
2019
College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xian, Shaanxi 710021, China
Design And Motion Analysis Of Main Cam Of High Speed Paper Picking Mechanism, Yang Benben, Cao Jujiang, Liu Yansong, Yang Kun
Food and Machinery
A double cam-four-bar combination mechanism was proposed based on the analysis of actuator position and attitude in paper-picking process. By using higher order polynomial and arc combination curve, the contour equation of the main drawing of high-speed paper-picking mechanism with higher order reciprocal continuity and smaller absolute value was obtained. The radius of base circle and the motion angle of cam were analyzed with the aim of pressure angle and angular acceleration of main cam. The results showed that using higher order polynomial and arc combination curve as the main cam contour equation could meet the requirements of the position …
Effects Of The Dissolved Oxygen Level And The Vibration On Oxidative Stress Of Grouper During Water Transport,
2019
Shanghai Ocean University College of Food Science and Technology, Shanghai 201306, China; Shanghai Aquatic Products Processing and Storage Engineering Technology Research Center, Shanghai 201306, China; Shanghai Professional Technology Service Platform on
Effects Of The Dissolved Oxygen Level And The Vibration On Oxidative Stress Of Grouper During Water Transport, Wu Bo, Xie Jing
Food and Machinery
By evaluating the changes of antioxidant enzyme activity, antioxidant capacity, metabolites, glycogen and lactic acid content in tissues, the effects of different packaging oxygenation modes and transport road conditions on oxidative stress of grouper during waterborne transport were studied. The results showed that the antioxidant enzyme activity, antioxidant capacity and metabolites of grouper under continuous aeration and low oxygen vibration changed non-significantly, which indicated that the body could regulate and maintain the balance of antioxidant system. However, the activities of antioxidant enzymes, antioxidant capacity, lipid metabolites and anaerobic metabolic material production in grouper under very low dissolved oxygen and continuous …
Study On Shrinkage Model Of Fresh Shelled Peanuts By Hot Air Drying Based On Temperature Gradient,
2019
College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, Henan 471023, China
Study On Shrinkage Model Of Fresh Shelled Peanuts By Hot Air Drying Based On Temperature Gradient, Lu Yingjie, Ren Guangyue, Duan Xu, Zhang Ledao, Ling Zhengzheng
Food and Machinery
To explore the shrinkage influence on fresh shelled peanut hot air drying, improving drying quality, this experiment with fresh shelled peanut as raw material, the selection of different temperature gradient (40, 50, 60 ℃) hot air drying conditions on the shrinkage characteristics were studied, and established the corresponding mathematical model fitting. The results showed that in the drying process, the volume contraction ratio of peanut shell and peanut kernel decreased gradually, the contraction rate increased, and the void volume increased gradually. The peanut shell contracted first than the kernel, and the net structure was seriously deformed after the contraction. Temperature …
Application And Research Progress Of Led Light Sterilization Technology In Fresh-Keeping Processing Of Fruit And Vegetables,
2019
Shanghai Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation, Shanghai 201306, China; Quality Supervision, Inspection and Testing Center for Cold Storage and Refrigeration Equipment, Shanghai 201306, C
Application And Research Progress Of Led Light Sterilization Technology In Fresh-Keeping Processing Of Fruit And Vegetables, Zhang Yuchen, Xie Jing
Food and Machinery
LED is a kind of green and environment-friendly cold light source, which has the advantages of non-toxicity, non-residue and wide application prospects in killing foodborne pathogenic bacteria in fruit and vegetable postharvest by using LED illumination technology. In this paper, the characteristics, sterilization mechanism and sterilization effect of visible and ultraviolet LED lamps were summarized. The sterilization effect of visible and ultraviolet LED lamps assisted by several different photosensitizers, as well as the dosage, effect and strains of the photosensitizers used werealso introduced. Finally, the existing problems and the future development direction of LED illumination sterilization technology were proposed.
Safety Evaluation Of Freeze-Dried Powder Of Sika Deer Antler Blood And Its Effect On Alleviating Physical Fatigue In Mice,
2019
School of Public Health of Nanjing Medical University, Nanjing, Jiangsu 211166, China; Safety Assessment and Research Center for Drug, Pesticide, and Veterinary Drug of Jiangsu, Nanjing, Jiangsu 211166, China
Safety Evaluation Of Freeze-Dried Powder Of Sika Deer Antler Blood And Its Effect On Alleviating Physical Fatigue In Mice, Qin Heng, Li Shifen, Hu Qi, Huan Fei
Food and Machinery
To evaluate the food safety of sika deer antler blood freeze-dried powder, the acute toxicity test in mice, and the 30-day feeding and three genotoxicity tests in rats were conducted. The effects of sika deer antler blood freeze-dried powder on alleviating physical fatigue in mice were studied by weight-bearing swimming in the tails, determination of the urea level in serum, the glycogen reserve in liver and the lactic acid level in serum before and after the exercises. Results: the freeze-dried powder of sika deer antler blood was a substance without toxicity according to the acute toxicity test (MTD>15 g/kg·BW). …
[Jp2]Extraction And Isolation Of Serotonin From Walnut And Its Anti-Ischemic Activity[Jp],
2019
Food Faculty of Jiangnan University, Wuxi, Jiangsu 214122, China
[Jp2]Extraction And Isolation Of Serotonin From Walnut And Its Anti-Ischemic Activity[Jp], Chen Chen, Xu Deping, Jin Meng, Zhang Xiaojuan
Food and Machinery
The functional components of anti-myocardial ischemic activity in walnut were studied. The walnuts were squashed and then extracted by 70% ethanol, and ethyl acetate. The ethyl acetate phase was concentrated and then separated by macroporous resin, MCI, and ODS columns. MTT assay and kit method were applied，along with the model of myocardial ischemia/reperfusion injury to detect the anti-ischemic activity of each isolated component. The results showed that 5,10-dihydroxytryptamine and Shepherdine were separated from walnuts for the first time. Moreover, 5,10-dihydroxytryptamine could significantly maintain the viability of myocardial cell and reduce the enzymes (LDH/CK) released by ischemia/reperfusion injury, having significant protective …
Optimization Of Ultrasonic Assisted Alcohol Extraction Of Polyphenols From Opuntia Milpa And Its Antioxidant And Hypolipidemic Activities,
2019
College of Forestry, Northeast Forestry University, Harbin, Heilongjiang 150040, China
Optimization Of Ultrasonic Assisted Alcohol Extraction Of Polyphenols From Opuntia Milpa And Its Antioxidant And Hypolipidemic Activities, Wang Jing, Guo Yang, Bao Yihong, Tian Xue, Li Huan, Qiu Junmeng
Food and Machinery
The extraction of polyphenols from opuntia milpa was prepared by ultrasound-assisted method. The optimum extraction process was determined by orthogonal experiment with the content of polyphenols and DPPH free radical scavenging rate as indicators. The antioxidant and hypolipidemic activities of polyphenol extract from opuntia milpa were evaluated. The results showed that the optimum extraction technology of opuntia milpa was solid -liquid ratio 1∶15, ethanol concentration 65%, at 65 ℃ for 45 min. Under the control of these conditions, the content of polyphenols was 20.51 μg/mL, and DPPH clearance rate was 87.59%. The polyphenol extract of opuntia milpa has good antioxidant …
Research Progress Of Fish Primary Processing Equipment Andautomatic Monitoring Technology,
2019
College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, Zhejiang 310058, China
Research Progress Of Fish Primary Processing Equipment Andautomatic Monitoring Technology, Huang Jianbin, Cheng Fang
Food and Machinery
The research progresses of fish primary processing machinery at home and abroad were reviewed in this study. Moreover the automatic monitoring technology and its application in aquatic products processing were introduced, from two aspects of material processing quality and the equipment running status. This would help to improve the efficiency and quality of fish primary processing and promote technology upgrading of aquatic processing industry.
Research Progress Of Determination Of Benzo-A-Pyrene In Edible Areca Nut,
2019
College of Food Science and Technology, Hunan Agricultural University, Changsha, Hunan 410128, China; Hunan Binzhilang Food Science & Technology Co. Ltd., Xiangtan, Hunan 411100, China
Research Progress Of Determination Of Benzo-A-Pyrene In Edible Areca Nut, Fu Xiaomei, Li Zongjun, Zhao Zhiyou, Luo Fenglian
Food and Machinery
Smoked areca nuts contain harmful substances such as benzo-a-pyrene on its surface, because they are cured in wood smoke in the initial processing process. People's health is seriously threatened by these harmful substances. It is crucial for people to monitor the residues of benzo-a-pyrene effectively in areca nut to ensure the food safety. The sources of benzo-a-pyrene pollution in edible areca nut and the pretreatment methods for detecting benzo-a-pyrene in edible areca nut are summarized in this study, and several instrumental methods for the determination of benzo-a-pyrene in food are also evaluated. Our study is helpful to improving deficiencies and …
Research Progress Of Cold Storage Type Incubator,
2019
Shanghai Engineering Research Center of Aquatic Product Processing & Preservation, Shanghai 201306, China; College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
Research Progress Of Cold Storage Type Incubator, Wang Xuesong, Xie Jing
Food and Machinery
With the development of phase change coolants and insulation technologies, it is expected that the cold storage incubators will be more economical, environmentally friendly, and durable, and have a positive impact on cold chain logistics and people's lives. Firstly, three types of organic, inorganic, and composite phase-change coolants used in cold storage incubators, as well as new cold storage agents such as microcapsule cold storage agents and nano-coolant developed in recent years were reviewed. Then, from thermal insulation materials and temperature fields, in terms of uniformity, the progress of design optimization of cold storage incubator were expounded, and the feasibility …
