Research On Migration Of Melamine Into Acidic Medium From The Coating Of Three-Piece Metal Cans,
2016
Suzhou Product Quality Supervision and Inspection Institute, Suzhou, Jiangsu 215104, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
Research On Migration Of Melamine Into Acidic Medium From The Coating Of Three-Piece Metal Cans, Chen Ying, Fan Yuhao, Liu Zhigang, Bai Jianguo, Yao Weirong
Food and Machinery
The migration rule of melamine (MEL) was investigated from the coating of three-piece metal cans into acidic beverages. On the basis of experimental data, migration model was established to predict the migration trend of this compound into simulated solution. Results showed that the migration rate of MEL into acidic beverages increased and the time of migration reaching equilibrium shortened with the higher temperature. The predicted data of established migration model and experimental data matched well, which provided effective supports for the safety assessment of three-piece metal cans applied in food packaging.
Determination Of Diethylstilbestrol In Microbial Degradation Systems By Hplc—Uv,
2016
College of Food Science, Sichuan Agricultural University, Ya’an, Sichuan 625014, China
Determination Of Diethylstilbestrol In Microbial Degradation Systems By Hplc—Uv, Deng Weiqin, Li Ashuang, Peng Xian, Liu Shuangshuang, Hu Kaidi, Zhang Mengmei, He Li, Chen Shujuan, Han Xinfeng, Liu Shuliang
Food and Machinery
The concentration of diethylstilbestrol (DES) in the microbial degradation systems was determined using HPLC—UV. Different extraction methods were used in the fungi and bacteria fermentation systems, DES was separated through a Sepax GP-C18 (150 mm×4.60 mm, 5.0 μm), eluted with methanol-water (7︰3, V/V) at 0.7 mL/min, and detected at 242 nm. Results showed that retention time of DES was 7.714 min. Good linearity was obtained with the detection limits of 0.5～50.0 mg/L with a correlation coeffcient of 0.996 3. The average spike recovers of DES for bacteria and fungi fermentation systems were 94.04% and 95.24%, respectively, with RSD of …
Loop-Mediated Isothermal Amplification Method For Detection Of Transgenic Maize Nk603,
2016
Changsha Centre of Supervision & Inspection on Food Quality Safety, Changsha, Hunan 410013, China
Loop-Mediated Isothermal Amplification Method For Detection Of Transgenic Maize Nk603, Yang Lixia
Food and Machinery
The specific LAMP primers of genetically modified maize NK603 were designed on the basis of the published sequence (GenBank accession number AX342369). Established the specific loop-mediated isothermal amplification (LAMP) method for the detection of the transgenic maize line NK603 strains. The specificity and sensitivity of this method were evaluated. The results showed that LAMP could detect the transgenic maize NK603 from several GM events specifically and effectively with LOD of 0.1%. Since this method is rapid, simple, it could be applied in GMO detection.
Determination Of Five Phthalate Residues In White Spirit By Gas Chromatography,
2016
College of Food Science and Engineering, Jilin Agricultural University, Changchun, Jilin 130118, China
Determination Of Five Phthalate Residues In White Spirit By Gas Chromatography, Cao Yong, Hua Xiaoman, Zheng Mingzhu, Wang Nan, Liu Jingsheng
Food and Machinery
A capillary gas chromatographic method with flame ionization detector (GC-FID) for the detection of five phthalate esters dimethyl phthalate(DMP), di-ethyl phthalate(DEP), di-butyl phthalate(DBP), di-(2-ethylhexyl) phthalate(DEHP) and dioctyl phthalate(DnOP)
Simulation Of Measurement Section Of Single Screw Extruder For Pla,
2016
School of Material and Mechanical Engineering, Beijing Technology and Business University, Beijing 100048, China
Simulation Of Measurement Section Of Single Screw Extruder For Pla, Huang Zhigang, Liu Kai, Li Menglin, Zhang Hongjian
Food and Machinery
For polylactide (PLA) dedicated screw rod of different type of melt conveying paragraph, using Polyflow software for three dimensional flow field simulation three species different type mixed refining structure, analysis polylactide extrusion process of three dimensional isothermal flow field. Results showed that: in same of process conditions, different of single screw rod structure conditions, the physical properties of flow road within polylactide exists differences; ordinary type single screw rod of melt body of axis to speed and pressure larger, conducive to screw rod extrusion process, but melt body shear rate is smaller, and melt viscosity is bigger, led to extrusion …
Numerical Simulation On Effect Of Tip-Clearance Between Screw Flight And Barrel On Performance Of Food Melt Conveying Section In Single Screw Extruder For Expanding,
2016
School of Mechanical Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
Numerical Simulation On Effect Of Tip-Clearance Between Screw Flight And Barrel On Performance Of Food Melt Conveying Section In Single Screw Extruder For Expanding, Li Huanhuan, Chen Haiying, Cui Zhengwei
Food and Machinery
The three-dimensional isothermal flow fields of single screws with different values of tip-clearance (0.4, 0.8, 1.2 mm)were simulated by POLYFLOW software. Combined with the particle tracing technique, the effect of different tip- clearance on the flow field and mixing ability of the food melt was also explored. The results show that: the shear rate near the top of the screw flight increases, the average viscosity of food melt decreases, and the conveying capacity of the screw weakens with the decrease of the tip-clearance. On the contrary, with the increase of the tip-clearance, the residence time of the food melt increases …
A Kind Of Pulse Transformers With Auxiliary Windings Applied To Pef,
2016
The Ministry of Education’s of Light Industry Advanced Process Control of Jiangnan University, Wuxi, Jiangsu 214122, China
A Kind Of Pulse Transformers With Auxiliary Windings Applied To Pef, Yan Wenxu, Gong Qun, Zhang Shanshan
Food and Machinery
Puts forward a kind of economical and practical pulse transformer with closed magnetic core type, to improve the original pulse transformer, in order to improve the coupling coefficient and decrease the leakage inductance, thus reducing the rising time of output pulse voltage. Using electromagnetic induction principle to analyze and test, to improve the original pulse transformer in adding a reverse parallel auxiliary winding to connect the primary and secondary windings, to study the coupling and the output characteristics of pulse transformer, to take measurement and calculation of the important parameters. The pulse signal of the test is square wave pulse …
Research On Energy Efficiency Of Pulse Electric Field Equipment,
2016
Jiangsu Key Laboratory of Food Manufacturing Equipment and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
Research On Energy Efficiency Of Pulse Electric Field Equipment, Tian Yuan, Ping Xueliang, Yao Wenlong, Jiang Yi
Food and Machinery
PEF sterilization technology is a popular sterilization technique, but the issue of cost for sterilization affects its industrialization process. The PEF sterilization equipment was studied from the perspective of the waveform energy efficiency and the energy efficiency of the chamber. The results showed that the closer the waveform was to a square wave waveform, the higher energy efficiency was, and the energy efficiency of food with higher conductivity is significantly higher than that of food with low conductivity. The energy efficiency can be improved by increasing the power of the chamber.
Design And Research Of Serpentine High Power Intermittent Microwave Drying Equipment To The Capsicum,
2016
Xinjiang Shihezi Vocational College, Shihezi, Xinjiang 832000, China; Dongshen Agricultural Machinery Research and Development Center, Shihezi, Xinjiang 832000, China
Design And Research Of Serpentine High Power Intermittent Microwave Drying Equipment To The Capsicum, Chen Jiandong, Zhang Qian, Cai Yongmei
Food and Machinery
The intermittency of the microwave drying speed can be modulated according to the initial moisture content of capsicum by using PLC. The microwave's desiccators can be heated evenly using a rotating parabolic guided wave design. Each processing unit is composed of a microwave's desiccator and a cooling pipe, which can be flexibly added or reduced according to the need. The entire product line is designed as a serpentine tunnel structure, making the device structure more compact and reducing the occupied area. The PLC and optical fibre temperature controller are the main controlling system, which can realize the production automation. The …
Discriminating Intact And Crack Hazelnuts Using Impact Sound Analysis,
2016
College of Material and Mechanical Engineering, Beijing Technology and Business University, Beijing 100048, China
Discriminating Intact And Crack Hazelnuts Using Impact Sound Analysis, Liu Bin, Wu Xue, Wang Yafei, Huang Zhigang
Food and Machinery
Impacting sound analysis is a new method for nuts grading and detection. The acoustic characteristic of the intact and crack hazelnuts is presented in this paper. The gradient accumulation, frequency spectrum and mel-frequency cepstral coefficients (MFCC) were extracted from the impacting sound signals. The results showed that the gradient accumulation parameter was easily calculated, and the accuracy of discriminating crack hazelnuts was about 80%. For frequency spectrum analysis, the spectral distribution of the intact hazelnuts sound concentrates was in 5～8 kHz and that of the crack hazelnuts tends to disperse in wide frequency range. It is difficult to choose the …
Research On Numerical Simulation Of Flow And Temperature Field And Impact Of Door Opening And Closing Process In Incubator,
2016
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, Guangdong 510640, China
Research On Numerical Simulation Of Flow And Temperature Field And Impact Of Door Opening And Closing Process In Incubator, Zhang Jing, Wang Xiaohan, Liu Nian
Food and Machinery
According to CFD (Fluent), a gas flow and heat transfer mathematical model was adopted for the certain process parameters of a new carbon dioxide incubator. The unsteady numerical simulation of its internal flow, heat transfer in the doorway was done. The impact of opening and closing door was discussed. The results showed that: ① The effect of outside air on the internal temperature after opening the outer door for 5s’ period of time has been small; ② The affected areas of the temperature in the incubator are from the doorway to the interior, from the downside to the upside, from …
Design Of Control System For External Thread Whirling Machine Used For Processing Pressing Screw,
2016
School of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei, Anhui 230009， China
Design Of Control System For External Thread Whirling Machine Used For Processing Pressing Screw, Lin Xudong, Wen Jie, Lv Tao, Wu Yanming
Food and Machinery
An automatic control system for the external thread whirling machine which is designed, with PLC as master controller and touch screen as human machine interface，using servo motor and AC motor as actuator, achieves automatic processing for different specifications pressing screw by setting different parameters. The control system can be a one-shot forming by thread whirling compared with traditional processing methods and does not require adjustment for master plate compared with the original external thread whirling machine, thus significantly reducing the operator's skill requirements, eliminating human error makes knife angle more accurate.
Optimization On Tea Carding Technology By Artificial Neural Network,
2016
Engineering College, Anhui Agricultural University, Hefei, Anhui 230031, China; State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui 230031, China
Optimization On Tea Carding Technology By Artificial Neural Network, Wang Xiaoyong, Li Bing, Zeng Chen, Li Shangqing, Wu Xiankun
Food and Machinery
The influences were studied. from tea carding temperature, tea carding time and the amount of leaves on the processing, taking Lu'an green tea as material. Based on the single factor experiment, the optimum parameters were selected. The optimum parameters were as followed: carding temperature 90 ℃, carding time 5 min, and the amount of leaves 1.0 kg. Experimental data were subjected to multivariate first-order regression and multivariate quadratic regression, and two regressing equations were obtained. A neural network model based on the orthogonal experiment data was established to obtain the optimum parameters, final result for temperature at 93 ℃, tea …
Design Of A New Continuous Grading Litchi Peeling Machine,
2016
Food and Biology Engineering College, Henan University of Science & Technology, Luoyang, Henan 471023, China
Design Of A New Continuous Grading Litchi Peeling Machine, Yang Xiaotong, Duan Xu, Guo Guixia, Ren Guangyue
Food and Machinery
Based on the litchi fruit's physical and chemical properties, a new continuous fruit peeling equipment had been designed to combine the grade and peel unit. The device integrates photoelectric beam machine into the grading unit, which makes litchi fruit peeling easily after rating. The peeling mechanism is that the graded fruit cut a small opening firstly, then torn the peel. Thus the equipment could continuously finish fruit rating, orderly loading, cutting, peeling and fruit collection. Therefore, it could achieve not only achieve the high efficient rating and peeling operation, but also keep the litchi fruit integrity, which is beneficial to …
Effects Of 1-Mcp Treatment On Browning Heart And Storage Quality Of Huangguan Pears With Different Harvest,
2016
Agricultural Product Storage and Processing Research Institute, Gansu Academy of Agricultural Sciences, Gansu， Lanzhou 730070, China; Engineering and Technology Research Center for Agricultural Product Storage and Processing of Gansu Province, Gansu， Lanz
Effects Of 1-Mcp Treatment On Browning Heart And Storage Quality Of Huangguan Pears With Different Harvest, Wu Xiaohua, Xie Minhua, Wang Xuexi, Chen Bai
Food and Machinery
The control effects of 1-methylcyclopropene (1-MCP) treatment on browning heart and related quality indexes at room storage of Huangguan pears with different maturity were studied. The results showed that the treatment of 1-MCP can significantly inhibited the occurrence of brown heart, the respiration rate and ethylene production rate, and postponed the climacteric time for ethylene, 1-MCP treatment also maintain good fruit firmness, delayed the loss of titratable acid and soluble solids content of the pears, and better to keep the quality of Huangguan pear. 1-MCP treatment had obvious keeping-fresh effect. The effects of 1-MCP control browning heart are closely related …
Effect Of High Pressure Treatments On Porphyra Yezoensis,
2016
Mechanical Engineering College, Jiangnan University, Wuxi, Jiangsu 214122, China
Effect Of High Pressure Treatments On Porphyra Yezoensis, Lei Yajun, Zhao Wei, Tang Yali
Food and Machinery
Porphyra yezoensis as raw material, different pressure level and treatment time affect their microbiological, color and texture. The experimental results showed that the effect of pressure level and treatment time on microbiological of yezoensis was remarkable(P<0.05). As the time and pressure increases, the total number of colonies decreased; after more than 15 min, the number of colonies did not change significantly; the number of colonies declined 2.44 lg CFU/g when the pressure level rises to 600 MPa. Porphyra yezoensis hardness with increasing treatment pressure decreased after the first rise, declined with time after the first increase, but the impact of pressure and dwell time on hardness was not significant (P>0.05), The effect of pressure level and treatment time on hardness of Porphyra yezoensis was almost negligible(P>0.05), when treatment time were 15 min, the hardness of Porphyra yezoensis and hardness of untreated almost the same at 600 MPa. Treatment time had no obvious effect on L values (P>0.05). High pressure processing Porphyra yezoensis, processing pressure 600 MPa, the holding time of 15 …
Prediction On Freshness Degree Of Lingwu Long Jujube On Dielectric Properties,
2016
College of Agriculture, Ningxia University, Yinchuan, Ningxia 750021, China
Prediction On Freshness Degree Of Lingwu Long Jujube On Dielectric Properties, Shen Jingbo, Zhang Haihong, Ma Xuelian, Wang Huiqian, Li Ziwen, Zhou Shiping
Food and Machinery
In order to study the relationship between freshness degree and dielectric properties of Lingwu long jujube, the dielectric properties parameters of long jujube were measured using (LCR)on 1.995 kHz, and the correlation analysis between dielectric properties parameters and quality parameters was conducted. The results indicated that correlations between long jujube’s dielectric loss factor ε″ and soluble solids content, hardness, weight loss, titratable acids content & MDA content were very significant (P<0.01), and the correlation between relative dielectric constant ε′ and respiration intensity was very significant (P<0.01). The long jujube were divided into three freshness grades according to the change rules of soluble solids content, hardness and weight loss rate. Using dielectric loss factor ε″ as the input characteristic parameters,the prediction model of long jujube freshness was established by BP neural network structure. The average distinguishing rate of freshness grades was 81.67%. The results indicated that the freshness degree of long jujube could be predicted by dielectric properties parameters.
Research On Design Of Refrigerated Food Logistics Warehousing System Based On Rfid,
2016
Chongqing Engineering Vocational Technical College of Finance and Economics and Trade College, Chongqing 430037, China
Research On Design Of Refrigerated Food Logistics Warehousing System Based On Rfid, Liu He
Food and Machinery
In order to solve the inconvenience caused by low efficiency, low accuracy and information transmission is easy to be disturbed in warehousing system which use bar code technology, a refrigerated food warehousing system is designed on the RFID and database technology. According to the functional requirements of the refrigerated food warehouse management, the warehousing system is divided into the storage management center, the handheld terminal system, the fixed terminal system and the forklift terminal system, and the software program design of the control system is completed. It can achieve the design requirements, and improve the efficiency of storage management of …
Screening Of Strain With Antioxidation Activity From Wild Macrofungi And Optimization On Its Fermentation Conditions,
2016
School of Biology and Food Engineering, Chuzhou University, Chuzhou, Anhui 239000, China
Screening Of Strain With Antioxidation Activity From Wild Macrofungi And Optimization On Its Fermentation Conditions, Chai Xinyi, Yu Shijun, Zhang Weiwei, Du Zehu
Food and Machinery
The objectives of the study were to screen the strain with a good antioxidation activity from 10 species of wild macrofungi and optimize the optimal conditions for antioxidant substance production. These results can provide some references for the breeding of Auricuiaria auricular and industrialization of its production. As material with 10 strains of wild fungi from the Langyashan in Anhui province, the strains with antioxidant substance producing were obtained by DPPH free radical scavenging rate of the broth. Shake flask culture was then used to get the optimum culture conditions based on the single factor and orthogonal experiments, which is …
Analysis Of Components Of Oleoresin Of Cold Drawn Oil In Zanthoxylum With Different Extraction Methods,
2016
Sichuan Agricultural University College of Food Science, Ya’an, Sichuan 625014, China
Analysis Of Components Of Oleoresin Of Cold Drawn Oil In Zanthoxylum With Different Extraction Methods, Jiang Yan, Pu Biao, Wang Hanqing, Xu Lin, Feng Yachao, Chen Yan
Food and Machinery
To discuss the effects with different methods of oleoresin of cold pressing oil in Zanthoxylum extraction, select appropriate oleoresin extraction method, and explore different extraction methods of oleoresin flavor components of cold pressing oil in Zanthoxylum. With the cold pressing oil in Zanthoxylum as raw material, water bath, ultrasonic and microwave methods were used to extract the oleoresin and GC—MS was adopted to analyze flavor components of the different extraction methods of oleoresin. The results showed that the extraction of oleoresin absorbance at 270 nm value of ultrasound is the highest, followed by water bath, the lowest is microwave; the …
