Pricing Mechanism Of Food Company Project Based On Vickery Theory,
2016
Construction Project Tendering ＆ Bidding Management in Hainan Province, Haikou, Hainan 570023, China
Pricing Mechanism Of Food Company Project Based On Vickery Theory, Chen Xiaorong
Food and Machinery
The analysis of the core content of Vickrey theory shows that the Vickery theory can effectively solve the problem of commodity auction under information asymmetry. After applying Vickery theory in construction bidding, “the second price bid evaluation method” is promoted. Defined the price of bidder A is “B”, the real price of project is “Z”, three strategies of bidder under “the second price bid evaluation method” is discussed: ① B>Z；② B
Synthesis And Characterization Of Brewer’S Grains Peptide With Α-Glucosidase Inhibitory Activity,
2016
Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 200240, China
Synthesis And Characterization Of Brewer’S Grains Peptide With Α-Glucosidase Inhibitory Activity, Fang Yuwen, Wu Jinhong, Wang Zhengwu, Gan Li, He Jiajun, Chen Shanshan, Ma Hongcheng, Shi Haiming
Food and Machinery
Brewer’s grains peptide SS-5(sequence: Ser-Pro-Asp-Arg-Ser) was synthesized by solid-phase synthesis with Fmoc protect group. Then the crude synthetic peptide was purified and desalted by HPLC, and as a result the purity was over 95%. The inhibitory activity of synthetic peptide SS-5 to α-glucosidase was detected, and the results showed that it was influenced by salt ionic concentration and the lower concentration presented higher inhibility. Furthermore, the interaction between synthetic peptide SS-5 and α-glucosidase was confirmed by circular dichroism spectrum(CD) and fluorescence quenching assays.. Therefore, a fast method of obtaining brewer’s grains peptide SS-5 with α-glucosidase inhibitory activity in quantity was …
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 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 …
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.
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 …
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 …
In Vivo Toxicity Assessment Of Aflatoxin B1-Contaminated Corn After Ozone Degradation,
2016
State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan Univers
In Vivo Toxicity Assessment Of Aflatoxin B1-Contaminated Corn After Ozone Degradation, Luo Xiaohu, Qi Lijun, Wang Ren, Wang Li, Li Yongfu, Yang Dan, Yu Xiaobin, Chen Zhengxing
Food and Machinery
Aflatoxin B1-contaminated corn (ACC) (83.0 μg/kg) was treated for 40 min at 90 mg/L ozone. And mice were used to assess the vivo toxicity of ozone treated ACC. Results indicated that compared with basal feedstuff, the mean weight of mice fed with ACC significantly decreased (P＜0.05). Whereas, the liver and kidney/body weight ratio increased significantly (P＜0.05). Alanine transaminase (ALT), aspartate aminotransferase (AST), and alkaline phosphatase (ALP) in serum increased significantly (P＜0.05). The total protein (TP), albumin (ALB), and globulin (GLB) content significantly decreased (P＜0.05). When mice were fed with the ozone-treated ACC, no significant differences were observed in the mice …
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 …
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 …
Design And Test Of Walnut Shell Creaking Machine With Four Extrusion Forces,
2016
College of Mechanical and Electrical Engineering, Shaanxi University of Science & Technology, Xi’an, Shaanxi 710021, China
Design And Test Of Walnut Shell Creaking Machine With Four Extrusion Forces, Yan Ru, Zhao Kuipeng, Wang Yaxiong, Li Jun, Chen Jing
Food and Machinery
According to the problems of low shell breaking rate and whole kernel rate caused by exerting two forces, a four forces shell creaking machine was designed and made. The contrast shell breaking experiment of ‘two forces and four forces’ and preliminary test were conducted, which showed the four forces shell breaking machine that apply to all over the size of walnuts had a better result than the two forces machine. The extrusion length has a significant impact on the shell cracking situation, but less on the walnut size. With the moisture content 10%, extrusion length 6 mm , cracking effect …
Research On Fruit Grading Detection System Based On Sopc,
2016
Department of Information Engineering, Henan Polytechnic College, Zhengzhou, Henan 450046, China
Research On Fruit Grading Detection System Based On Sopc, Qiao Lu, Chen Jing
Food and Machinery
In order to solve traditional fruit grading detection system of graded speed slow, huge system and high cost, puts forward the detection system based on SOPC fruit grading, and the whole control system was integrated into a FPGA chip, which can be detached from the PC platform, greatly reduces the cost. Through the Soble algorithm to achieve the edge of the fruit image extraction, and the method of histogram of the size of the fruit to distinguish, the fruit could be accurately classified. Test results show that this system has the advantages of fast detection speed, short development cycle, and …
Design Of The Mechanism Principle Of The New Green Walnut Peeling Machine,
2016
Jinzhong University, Jinzhong, Shanxi 030600, China
Design Of The Mechanism Principle Of The New Green Walnut Peeling Machine, Zhao Jingtao, Shang Pengxu, Wu Xiaoxue, Fang Ye
Food and Machinery
The peeling machine is mainly used for separation of the green walnut green and walnut, using a single walnut peeling process, along with cutting through broken skin, torsion straining, and casting skin process. In order to realize the continuous feeding and discharging, a special kick-off device was designed, by utilizing a series of repeat actions, including rotation-depression-torsion-reduction, finally achieve the separation of the green walnut pericarp from walnut. It turned out that the mechanical structure was compact and easy to operate as well as the knifes were systematized. Therefore, the appropriate tool can be replaced according to the specific utilization. …
The Dominant Spoilage Bacteria And Their Growth And Decline Law In Fresh Lotus Seeds Storedat The Cold Storage,
2016
Hunan Provincial Engineering Research Center for Food Processing of Aquatic Biotic Resources, Changsha University of Science and Technology, Changsha, Hunan 410114, China
The Dominant Spoilage Bacteria And Their Growth And Decline Law In Fresh Lotus Seeds Storedat The Cold Storage, Wang Jianhui, Wang Xiu, Wang Faxiang, Li Xianghong, Y Ujian, Jin Na, Liu Yongle
Food and Machinery
In this study, spoilage bacteria in fresh Xiang lotus seeds preserved at 4 ℃ temperature for 18 d were separated by dilution-plate method. Total genomic DNA was extracted from these strains and then subjected to PCR amplification. Dominant spoilage bacteria were identified using 16S rDNA sequencing for the identification and the law of their growth and declination was drawn. The results showed the four dominant spoilage bacteria in fresh Xiang lotus seeds preserved at the temperature of 4 ℃ were Pantoea dispersa, Staphylococcus epidermidis, Staphylococcus warneri, and Pantoea agglomerans. At the storage temperature of 4 ℃, the growing trends of …
Innovative Design For A Multifunctional Corn Storage Container,
2016
School of Mechanical and Automotive Engineering of Hubei University of Arts and Science, Xiangyang, Hubei 441053, China
Innovative Design For A Multifunctional Corn Storage Container, Chen Guohua, An Xueli, Hu Haiying
Food and Machinery
Based on the extensive market investigation and full consideration of the product development demanding, a new multifuntional corn storage container was designed using a optimization design principlein in this study. The new container was integrated with ventilation air-drying, heating and drying, deworming and sterilization, and energy supplied by photovoltaic solar power. Then its solar control system was realized. Our practical application shows that the product works well and guarantees a safe storage of corn.
Moderate Refine And Oxidative Stability Of Cold-Pressed Carya Hunanensis Cheng Et R. H. Chang Oil,
2016
Changsha University of Science and Technology, Changsha, Hunan 410114, China
Moderate Refine And Oxidative Stability Of Cold-Pressed Carya Hunanensis Cheng Et R. H. Chang Oil, Miao Miao, Wang Xiali, Li Yuchun, Yi Cuiping, Shi Xiulan, Liu Ruixing
Food and Machinery
Moderate refining and antioxidant adding on the qualities of cold squeezing Carya kernel oil was studied. Results showed that the the acid value of cold squeezing Carya kernel oil was a little higher and appeared to be a darker shade of yellow than national standards. Subsequently, the qualified oil could be obtained after deacidification and decoloration, with the acid value lower than 3.0 mg KOH/g and yellowness 30. The storage time of the studied oil was 448 days with 0.02% phytic acid added, and the volume of unsaturated fatty acid was found up to 86.74%.
The Optimization Of Extraction Process Of Insoluble Antioxidant Dietary Fiber From Orange Pomace,
2016
College of Biological Science and Technology, Minnan normal university, Zhangzhou, Fujian 363000, China
The Optimization Of Extraction Process Of Insoluble Antioxidant Dietary Fiber From Orange Pomace, Xue Shan
Food and Machinery
The enzymes-chemical method was used to extract the insoluble antioxidant dietary fiber (IADF) from the remaining orange pomace after oppressing juice. The single factor experiment and response surface optimization have carried out considering the clearance rate of DPPH free radical as the indicator. The results of response surface showed that the clearance rate of free radicals was best in the condition of liquid ratio 33.58 mL/g, protease dosage of 0.21 mL/g, amylase temperature of 67 ℃ and glucoamylase temperature of 64 ℃, and highest value was up to 3.520 mmol Trolox/100 g IADF.
Optimization Of Purification Technology For Total Flavonoids From Mentha Haplocalyx By Macroporous Resin,
2016
College of Horticulture and Landscape, Hunan agricultural university, Changsha, Hunan 410128, China; State Key Laboratory of Subhealth Intervention Technology, Changsha, Hunan 410128, China
Optimization Of Purification Technology For Total Flavonoids From Mentha Haplocalyx By Macroporous Resin, Liu Xuehui, Zhang Si, Zhang Zhixu, Kang Xincong, Li Jian, Xie Hongqi, Liu Dongbo
Food and Machinery
Based on the adsorption-desorption rate and the content of total flavonoids, static and dynamic adsorption methods were adopted to evaluate the purification ability of 6 macroporous resins, including ADS-7, ADS-17, NKA-9, AB-8, D101, and HPD-100, for purifying total flavonoids from of Mentha haplocalyx. The results showed that AB-8 was adsorbed best among all the candidates. The optimum purification condition was as follows. The flow rate was 1 mL/min, and the loading volume of sample was 3 BV containing flavonoids 2.56 mg/mL in it, desorbed by 4 BV 30% ethanol. Finally, 90.35% total flavonoids from Mentha haplocalyx were obtained. The method …
Study On The Preparation Of Beer Yeast Extract From Its Waste Residue,
2016
College of Food Science and Technology, Yangzhou University, Yangzhou, Jiangsu 225127, China
Study On The Preparation Of Beer Yeast Extract From Its Waste Residue, Wu Mangang, Lei Shumin, Bian Junjie, Fei Litian, Yu Hai, Ge Qingfeng, Jiang Hong, Zhou Pingfan
Food and Machinery
In order to acquire optimum conditions of preparation of yeast extract from its waste residue, single factor experiments were conducted to a good condition of adding external enzymes, and also it was compare with the traditional process. And then the GC—MS was used to analyze the flavor of the yeast extract for determining the best stratagem. Through optimization, the best optimum condition is that it adding 0.20% neutral protease and reacting for 36 h at pH 6.0. The final extract contained a variety of acids, esters, alcohols and other substances. The neutral protease method is shown a better way to …
