Innovative Path On Scientific English Teaching To Food Science Students Under The Framework Of Applied Talents Cultivation,
2016
Xinxiang Medical University, Xinxiang, Henan 453003, China
Innovative Path On Scientific English Teaching To Food Science Students Under The Framework Of Applied Talents Cultivation, Ren Wenlin
Food and Machinery
With the emphasis on the cultivation of applied talents and the rapid development of information technology and economic globalization, the scientific English teaching to food science students is facing the new challenge of our ages. To examine the current situation of scientific English teaching, there are still a lot of problems. The author suggests to improve awareness of the importance on the profession, ensure systematicness and advancement of teaching content, construct the learning mode of the scene type, introduce the multiple evaluation system as well as grasp the way and method of obtaining industry information and professional literature, to improve …
Methods Of Detecting The Content Of Folic Acid In Infant Complementary Food Supplements,
2016
Department of Food Science and Engineering, Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, Guangdong 510006, China
Methods Of Detecting The Content Of Folic Acid In Infant Complementary Food Supplements, Luo Minting, Wu Kegang, Huang Weiqian
Food and Machinery
To detect infant complementary food supplements of folic acid, methds of microbiological method, solid-phase-extraction-HPLC and direct-ammonia-extraction-HPLC were utilized respectively. Analyses among the three methods were compared and the most accurate and rapid one was determined. The results showed the direct-ammonia-extraction-HPLC analysis by using the CH3OH-0.05 mol/L KH2PO4 (volum ratio,5∶95; pH 6.3) as mobile phase and controlling the peak time at 6.5 min, and the standard curve coefficient was 0.999 8 with detection limit 0.019 0 mg/L. Compared with the other two methods, this method was simple, rapid, sensitive and reproducible characteristics, and provided an effective theoretical basis to establish method …
A High Precious Gutter Oil Detector Based On Complementary Metal Oxide Semiconductor,
2016
Zunyi Normal College, School of Physics and Mechanical and Electrical Engineering, Zunyi, Guizhou 563002, China; Chongqing University of Posts and Telecommunications, College of computer Science and Technology, Chongqing 400065, China
A High Precious Gutter Oil Detector Based On Complementary Metal Oxide Semiconductor, Yang Jie, Huang Haishen, Li Yangjun
Food and Machinery
Since the different conductivity of gutter oil and edible oil normally result in the different resistivity per unit volume, a linear detection module based on CMOS (Complementary Metal Oxide Semiconductor) was designed, which shorted to ground combined with directly selection the resistor string to divide voltage makes more linear precision voltage divider. Under the action of counting pulse, the count resistor divider compares with the reference voltage to achieve different number of high level, which not only can distinguish gutter oil and edible oil, but also come to the mass fraction of edible oil, which incorporates gutter oil. In the …
Design Of Needle-Typed Moisture Content Detecting Instrument Of Grains,
2016
Engineering Collega of Anhui Agriculture University, Hefei, Anhui 230031, China
Design Of Needle-Typed Moisture Content Detecting Instrument Of Grains, Wang An, Wu Yang, Liu Quan
Food and Machinery
In order to enhance the speed and precision of grain moisture content measurement, and to satisfy the need of online detection of drying machinery, a new symmetric needle typed moisture content sensor which direct thrust into the grain was proposed, which was cooperated with high precision testing circuit and optimization algorithm, and the corresponding new equipment was designed. The trial results indicated that the error of paddy moisture content measurement was no more than 1% and the response time was less than 2 s. Through simple parameters setting, this equipment could be applied to measure moisture content of other grains. …
Separation Of Citral From Litsea Cubeba Oil By Phase Transfer Catalysis,
2016
College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China; National Engineering Laboratory for Rice and Byproducts Processing, Changsha, Hunan 410004, China
Separation Of Citral From Litsea Cubeba Oil By Phase Transfer Catalysis, Fu Hongjun, Peng Xianglian, Kuang Chuntao, Zhong Haiyan
Food and Machinery
Randomly methylated- β-cyclodextrin (RM-β-CD) was used as phase transfer catalysis to separate citral from Litsea cubeba oil by addition reaction and hydrolysis reaction. The optimum separation conditions were obtained by single factor experiment design and Box-Behnken experiment design. The purity and yield of citral were 96.50% and 86.60%, respectively, which was gotten under the optimum conditions of reaction time 3.3 h, RM-β-CD amount 0.65% (molar fraction) and reaction temperature 15.0 ℃. Predicted value was in accordance with actual value. This proposed method was used to separate citral from Litsea cubeba oil with convenient and had high efficient advantages.
Progress In Research Of Mycelial Morphology Control Of Filamentous Fungiin Submerged Fermentation,
2016
College of Chemistry & Bioengineering, Changsha University of Science & Technology, Changsha, Hunan 410004, China
Progress In Research Of Mycelial Morphology Control Of Filamentous Fungiin Submerged Fermentation, Jiang Xuewei, Li Hao, Yang Chen, Xu Yantao, Luo Xiaoming
Food and Machinery
Filamentous fungi are widely used in industrial fermentation. Its mycelial morphology is closely combined with objective product yield and fermented liquid viscosity, and it is one of the key factors in the fermentation process control. In this paper, the research progress was reviewed on the mycelia of filamentous fungi in the submerged fermentation,including its morphological characteristics, the analysis and characterization methods, the mechanism of mycelial pellet formation, and the influence of mycelial morphology control in fermentation. Therefore, the author indicated that quantitative description the growth of filamentous fungi was the foundation of precision control on fermentation process.
Research Progress On Preparation Of Nano-Starch And Its Application In The Preparation Of Edible Films,
2016
College of Food Science and Technology, Hunan Agricultural University, Changsha, Hunan 410128, China;Hunan Provincial Key Laboratory of Food Science and Biotechnology, Changsha, Hunan 410128, China
Research Progress On Preparation Of Nano-Starch And Its Application In The Preparation Of Edible Films, Zhou Yujia, Xiao Qian, Deng Fangming
Food and Machinery
Nano-composite natural polymer based film not only have low energy consumption, ease the pollution to environment and the pressure on the dying up raw material of non-degradable synthetic material, but also realized the sustainable development of resources. Because of the enhancement of nano particles, the composite film shows more unique and excellent properties than conventional edible film, with low cost, rich available, regenerative and less pollution. Reviewed methods on the preparation of nano starch at home and abroad, including the, physical and chemical methods. Described the application in nano-composite edible films briefly, and summarized the researches on the improvement of …
Breeding Of Temperature-Sensitive Mutant From Saccharomyces Cerevisiae,
2016
College of Chemistry & Bioengineering, Changsha University of Science & Technology, Changsha, Hunan 410004, China
Breeding Of Temperature-Sensitive Mutant From Saccharomyces Cerevisiae, Yue Xijie, Jiang Xuewei, Luo Xiaoming, Zhou Hui, Liu Yongle, Chen Daiwen, Zhou Zhiming
Food and Machinery
In order to obtain the efficient secretion of intracellular product in yeast, as the original strain,Saccharomyces cerevisiae (2n), (n) were mutagenized with UV treatment, five mutants strain may have temperature-sensitive were selected. To further identify, Y1 was used as the control bacterium, and its content of extracellular nucleic acids, proteins and FDP were determined, find that the highest degree of autolysis was Ts4(2n), it’s content of nucleic acid and protein in extracellular environment were 1.709, 1.483, the concentration of FDP in extracellular environment was 38μg/mL, higher than Y1 24.1%. Ts*2 (n) and Ts* …
Influence Of Different Conditions On Mass Transfer Kinetics Of Rabbit Meat During Wet-Curing,
2016
College of Food Science, Southwest University, Chongqing 400715, China
Influence Of Different Conditions On Mass Transfer Kinetics Of Rabbit Meat During Wet-Curing, He Cui, Xia Yangyi, Zhang Yan, Su Yan
Food and Machinery
The influence of different curing conditions including brine concentration (6%, 10%, and 15%), temperature (4, 15, and 25 ℃) and stirred on mass transfer kinetics of fresh rabbit meat during wet-curing was analyzed. The results showed that the changes of water (ΔMwt), salt content (ΔMNaClt) and weight (ΔM0t) had good correlation with the square root curing time (t0.5) in different curing conditions, and k2 was affected by brine concentration, temperature and stirring. Our results showed that the brine concentration of 10% could cause the highest diffusion value (1.18×10-9 m2/s) ,and the biggest …
The Analyses On Chemical Components In The Leaf Volatile Oils Of Zephyranthes Candida（Lindl.）Herb. And Their Antimicrobial Activities In The Fresh Milk,
2016
Pharmacy School, Anhui Xinhua University, Hefei, Anhui 230088, China
The Analyses On Chemical Components In The Leaf Volatile Oils Of Zephyranthes Candida（Lindl.）Herb. And Their Antimicrobial Activities In The Fresh Milk, Wei Qiang, Shi Xuefeng
Food and Machinery
Two kinds of volatile oil were extracted by steam distillation extraction (SDE) and supercritical fluid extraction of CO2 (SFE-CO2), and then they were identified by gas chromatography-mass spectrometry (GC—MS). The antimicroble effects of the extract on different rot funguses in fresh milk was evaluated in 4 ℃ within 10 days. There were 39 different components in the two kinds of volatile oil, including methyl cyclohexane, octacosane, 1,3-dimethyl-benzene, and dibutyl phthalate mainly found in the SDE volatile oil, and 4-(4-ethylcyclohexyl)-1-pentyl-cyclohexene, toluene, 1,2-benzenedicar-boxylic acid, diisooctyl ester, 1-ethoxy-pentane, 2-methoxy-4-vinylphenol, and 2,4-bis(1,1-dimethylethyl)-phenol mostly presented in the SFE-CO2 volatile oil. The differences among the contents …
Analysis Of Aroma Components Ingeranium Oil By Gc/Ms Combined With Retention Index,
2016
Technology Center, China Tobacco Yunnan Industrial Co., LTD, Kunming, Yunnan 650202, China
Analysis Of Aroma Components Ingeranium Oil By Gc/Ms Combined With Retention Index, Li Yuandong, Li Xianyi, Duan Yanqing, Liu Xiuming, Dangl Izhi, Huang Libin
Food and Machinery
The aroma components of geranium oil were analyzed by GC/MS, and the peak area normalization method was used to calculate the relative content of each component. With the mass spectrometry library search, 61 compounds which account for 86.217% in the aroma components of geranium, were identified by using reference literature retention index. The cis(trans)-isomers were confirmed by using retention index, and the accuracy of compound qualitative analysis in natural flavor was improved. The aroma of the key aroma compositions of the geranium oil (Citronellol, Geraniol, Citronellyl formate, Menthone, Geranyl formate, Isomenthone, Geranyl tiglate, Rose oxide, Geranyl butyrate, et al) was …
The Establishment Of Characteristic Fingerprints Of Faint-Scent Cigarettes,
2016
School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
The Establishment Of Characteristic Fingerprints Of Faint-Scent Cigarettes, Ying Fei, Song Shiqing, Zhang Xiaoming
Food and Machinery
In order to test the quality and characteristics of faint-scent cigarettes by the technology of GC—MS and electronic nose fingerprint, the method of SDE combined with GC—MS and electronic nose were used to construct their standard and radar fingerprints. Samples of non faint-scent cigarettes were selected to study the standard fingerprint. Results of similarity calculation showed that six batches of faint-scent cigarettes had a much higher similarity with the standard fingerprint, and the extent similarity was more than 85%, while the other six batches of non faint-scent ones had a lower similarity. This indicated that the faint-scent and non faint-scent …
Measurement Characteristics Analysis Of Microwave Cigarette Density Distribution Detector,
2016
China Tobacco Sichuan Industrial Corporation Technical Research Center, Chengdu, Sichuan 610066, China
Measurement Characteristics Analysis Of Microwave Cigarette Density Distribution Detector, Liu Minchang, Liu Yang, Wen Ruoyu, Zeng Jian, Zhao Weiyi
Food and Machinery
In order to analyze the measurement characteristics of microwave cigarette density distribution detector, the effects of types, width and position of tipping paper, and filling length of filter rod were studied. In this paper, the sample making method that can effectively reduce the measurement error is proposed, and the relationship model between measurement value and filling length of filter rod is also established. Our results showed that the detection accuracy can be theoretically improved by reducing the thickness of the microwave cavity, and this provides a new clue for further optimizing the detector of microwave cigarette density distribution.
Wide-Scope Screening Of Multiple And Illegal Additives In Foods By High Performance Liquid Chromatography-High Resolution Mass Spectrometry,
2016
Changsha Environmental Protection College, Changsha, Hunan 410004, China; Hunan Academy of Science and Technology for Inspection and Quarantine, Changsha, Hunan 410004, China
Wide-Scope Screening Of Multiple And Illegal Additives In Foods By High Performance Liquid Chromatography-High Resolution Mass Spectrometry, Zhang Fan, Yan Hongfei, Dai Jieyun, Wu Bo, Huang Zhiqiang, Zhang Ying, Wang Meiling
Food and Machinery
A method was developed screening, confirming and quantifying multiple additives and banned dyes in wine, juice and other beverages by liquid chromatography-ion trap-time of flight tandem mass spectrometry (LC-MS-IT-TOF). The accurate and multiple-stage mass spectrometry database of 41compounds was established. The analytes in samples were diluted with water-methanol (v/v). In the chromatographic analysis, target compounds were separated on a C18 column (150 mm × 4.6 mm, 5 μm) with the gradient elution using the mobile phases of methanol and 2 mM ammonium acetate. The results showed that the limits of detection were 0.005～1.0 mg/kg. The method validation was carried …
Study On Typical Volatiles Of Rice Contaminated By Aspergillus Flavus During Storage,
2016
Colledge of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410018, China; National Engineering Laboratory of Rice and By-Products Processing, Changsha, Hunan 410018, China
Study On Typical Volatiles Of Rice Contaminated By Aspergillus Flavus During Storage, Ren Jiali, Tang Yunpeng, Zhang Ziying, Zhou Chao
Food and Machinery
A headspace-solid phase microextraction/gas chromatography-mass spectrometry (HS—SPME/GC—MS) was used to analyze the volatiles of rice contaminated with Aspergillus flavus and their ion chromatograms were obtained. Combined TurboMass and NIST Search software, 26 volatile metabolites were identified in rice contaminated with Aspergillus flavus, including five kinds of aldehydes, six kinds of alcohols, one kind of ketone, nine kinds of hydrocarbons, one kind of ester, one kind heterocyclic, one kind of organic acid, one kind of amine. Based on aflatoxin catabolism and substance transformation in the rice, 2-hydroxy inferred-propionamide and Heptaldehyde are typically volatile component group, which would be used as typical …
Determination Of 5 Heavy Metal Elements And 15 Rare-Earth Metal Elements In Dark Tea,
2016
Hunan Institute of Food Quality Supervision Inspection and Research, Changsha, Hunan 410111, China
Determination Of 5 Heavy Metal Elements And 15 Rare-Earth Metal Elements In Dark Tea, Chen Xiong, Fang Xuanyi, Dai Xuan, Chen Tiebi, Liu Xiaowen, Li Wenyi
Food and Machinery
Under the optimized conditions, the samples were analyzed by ICP—MS with the triple internal standard elements Rh, In and Re. Good linearity of standard curves of twenty elements were obtained, and all the linear coefficient of them were above 0.999. The detection limits were in the range of 0.001 2～0.10 ng/mL. GBW10052-green tea, the certified reference material was analyzed and the results showed good agreement with the certified values. Five dark tea samples were determined by the proposed method. In the recovery experiment controlled by adding stand substance, the recoveries were range from 92% to 105%. It was indicated that …
Application Of Ionic Liquids In The Detection Of Antibiotic Negative Milk,
2016
Gansu Institute of Business and Technology, Lanzhou, Gansu 730010, China; Gansu Zhongshang Food Quality Test and Detection Co.,Ltd., Lanzhou, Gansu 730010, China
Application Of Ionic Liquids In The Detection Of Antibiotic Negative Milk, Zhou Xinkui, Hong Xia, Qian Yingwen, Deng Lijuan, Wang Jiebin, Gao Zhiying, He Haining, Liu Qi
Food and Machinery
Hydrophobic ionic liquid 1-octyl-3-methylimidazolium hexafluorophosphate [(C8MIM) (PF6)] was synthesized using metathesis method, and then the ionic liquid was purified by activated carbon and macroporous resin solid phase extraction column, to get a colorless, transparent product [(C8MIM) (PF6)] with a yield of 87.6%. The ionic liquids was used to extract penicillin and penicillin-thiazole acid hydrolysates in milk and dairy products, and its extracting condition was optimized. After that the content of penicillin and penicillin thiazole acid were detected by utilizing self-developed HPLC method, and it could be indirectly determined whether the milk and …
Quality Control Of Reagent In Food Microbiology Laboratory,
2016
Hunan Insitute of Food Quality Supervision and Resereache, Changsha, Hunan 410000, China
Quality Control Of Reagent In Food Microbiology Laboratory, He Yan, Yang Tao, Peng Shifu
Food and Machinery
As the indispensable supplies in food microbiology laboratory test, reagent supplies' quality directly affects the accuracy of the test results. To provide guidance for reagent supplies quality control, this article comprehensively analyzes the quality control of food microbiology laboratory from the respect of procurement, quality inspection & acceptance of appearance and immanency, storage, use, etc, and especially focus on internal quality acceptance of commercial medium and reagent.
Study On The Performance Of Heat Transfer Enhancement Of New Convex Groove Stirred Tank With Two Impellers,
2016
Xuchang Tobacco Factory, China Tobacco Henan industrial Co., Ltd, Xuchang, Henan 461000, China;Zhengzhou University of Light Industry, Zhengzhou, Henan 450002, China
Study On The Performance Of Heat Transfer Enhancement Of New Convex Groove Stirred Tank With Two Impellers, Xu Xiaoguang, Zhang Lin, Su Zhaolong, Jia Wenyi, Hu Meirong, Wu Xuehong
Food and Machinery
In this paper, based on the traditional steam heating stirred tank, a new type tank is presented with low wall temperature and convex groove. The performance of heat transfer and fluid flow is studied using detached eddy model. The results show that the velocity near the rotor area is large. The velocity in static area is uniform. Due to the small interaction between the upper and down blades, there have four cycle vortex in the tank, which are two parallel vortexes near each blade. When the speed of impeller N=96 r/min, the wall temperature is 358 K to heating 293 …
The Design And Finite Element Analysis Of The Adlay Grindingplate Sheller,
2016
Department of Mechanical Engineering, Wuhan Polytechnic University, Wuhan, Hubei 430023, China
The Design And Finite Element Analysis Of The Adlay Grindingplate Sheller, Hu Zhigang, Zhang Yonglin, Hou Chuanliang, Liu Jun
Food and Machinery
A new method of adlay shelling was presented to design a sheller. The adlay shelling technology that a mutual friction between grinding wheel and nylon wheels horizontally placed shell adlay was used. Moreover, the three-dimensional structure of sheller was designed, and the main parts of machine were also checked. Furthermore, in order to prevent the occurrence of resonance, ANSYS modal analysis of the body and the frame were carried out. The prototype of Adlay shell test results showed that the raw material processing capacity was 0.3 t/h, the shelling rate was greater than 95%, the whole kernel rate was more …
