Adsorption Conditions Optimization Of The Attapulgite On Lactobacillus Cells,
2015
School of Life Science and Chemical Engineering, Huaiyin Institute of Technology, Huai’an, Jiangsu 223003, China
Adsorption Conditions Optimization Of The Attapulgite On Lactobacillus Cells, Zhao Yuping, Tang Zixin, Yang Li, Feng Yunqi
Food and Machinery
The best adsorption conditions of the attapulgite on Lactobacillus cells were optimized. Different kinds and concentrations of acids and alkalis were used to pretreat the attapulgite, the results showed that 1 mol/L H3PO4 was the best. In pH 6, 0.4 mol/L phosphate buffer system, adsorption of attapulgite on Lactobacillus cells basically completed in 60 min, and reached to the adsorption equilibrium. Adsorption of attapulgite on Lactobacillus cells could well fit the Langmuir adsorption isotherm equation. With the increase of temperature, the equilibrium adsorption of attapulgite on Lactobacillus cells increased higher, which was an endothermic process. When Lactobacillus …
Effect Of Decoloring Process On Quality Of Massage Base Oil Developed From Sesame Oil,
2015
School of Food Science and Technology, Henan University of technology, Zhengzhou, Henan 450001, China
Effect Of Decoloring Process On Quality Of Massage Base Oil Developed From Sesame Oil, Zhao Yanru, Wang Xuede, Zhao Dan
Food and Machinery
This research according to the quality requirements of massage base oil as evaluation indexes, combining with free radical clearance, oxidation resistance and other indicators, compared the decolorizing technology's influence on the quality of sesame oil. And compare oils which have done in-depth research in the field of cosmetic skin care, such as olive oil, grape seed oil, wheat germ oil. That results showed that the decoloring process of sesame oil improve the oxidation resistance and the ability of scavenging free radicals significantly. In general, sesame oil skin care is better than other several kinds of vegetable oil which used as …
Eric-Pcr And Sau-Pcr Analysis Of Food-Borne Listeria Monocytogenes,
2015
College of Light Industry and Food Sciences, South China University of Technology, Guangzhou, Guangdong 510640, China; Xiamen Yinxiang Group CO., Ltd, Xiamen, Fujiang 361100, China
Eric-Pcr And Sau-Pcr Analysis Of Food-Borne Listeria Monocytogenes, Zhao Yiming, Shi Lei, Meng Hecheng, Zhang Zhigang, Yan He
Food and Machinery
To investigate the distribution of serotypes, genetic relativity and epidemiological characteristic of Listeria monocytogenes (LM). 22 LM strains isolated from Guangzhou and Xiamen were investigated by ERIC-PCR and Sau-PCR. Results of ERIC-PCR showed that these strains were distributed in 8 patterns (a-h). The main pattern was pattern h, and the number of strains was 8. Genotyping using Sau-PCR showed that all tested strains were grouped into 7 clusters (A-G). These results indicated the genetic relativity and epidemiological characteristic of different LM food-borne isolates.
Accumulation And Pollution Assessment Of Heavy-Metal In Vegetable By Changsha Section Of Xiangjiang River,
2015
Institute of Product Quality Supervision and Inspection of Hunan Province, Changsha, Hunan 410007, China
Accumulation And Pollution Assessment Of Heavy-Metal In Vegetable By Changsha Section Of Xiangjiang River, Yuan Liejiang, Yang Mengxing, Li Mengli, Li Zhonghai
Food and Machinery
To investigate the accumulation and pollution in Zn, Cu, Pb and Cd of the leaf vegetable by Changsha section of Xiangjiang River, three kinds of vegetable were collected and detected. The results showed that: the contents of these four heavy-metal elements in vegetable samples ranked from greatest to least was as follows: Zn＞Cu＞Pb＞Cd; Brassica chinensis L. had strong accumulation ability in Cu, Pb and Cd; 26.67% samples were heavy contaminated.
Evaluation Of Sanitary Quality Of Beef And Mutton In Xilingol District,
2015
XiLinGuoLe Vocational College, Xilinhaote, Inner Mongolia 026000, China
Evaluation Of Sanitary Quality Of Beef And Mutton In Xilingol District, Xiao Fang
Food and Machinery
Recently，the beef and mutton industrialization is developing rapidlyin Xilingol district of Inner Mongolia. To have a better understanding of sanitary quality of Xilingol beef and mutton, tests of bacterial colony, fecal coliform and pathogenic bacteria were conducted on 160 pieces of Xilingol beef and mutton samples. The results showed that the qualified rate of bacterial colony and fecal coliform were 76.25% and 77.18%, and the detection rate of pathogenic bacteria was 5.63%. The data provided theory evidence for improving Xilingol beef and mutton sanitary quality in the future.
Analysis Of Unsafe Factors In Baked Craft Of Betel Nuts,
2015
Hainan Academy of Agricultural Sciences, Institute of Processing and Design for Products, Haikou, Hainan 571100, China
Analysis Of Unsafe Factors In Baked Craft Of Betel Nuts, Kang Xiaoning, Ji Jianbang, Li Liang
Food and Machinery
The unsafe factors in the products of traditional craft baked betel nuts, betel improved oven baked dry and edible betel nut pieces were analyzed. The results showed that benzopyrene were the major effect factors on the food safety of Betel nut products. And the baked methods of betel nuts had greatly influence on the content of benzopyren. An overdose of benzopyrene was found in these baked betel nuts baked by traditional ways, such as traditional smoked roasting ovens, traditional hot wind roasting ovens. However, taking the baked Betel nuts as materials to manufacture products, the content of benzopyrene in these …
Analysis On Feasibility Of Detection Of Melamine In Liquid Milk Based On Near-Infrared Spectroscopy,
2015
School of Medical Instruments and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
Analysis On Feasibility Of Detection Of Melamine In Liquid Milk Based On Near-Infrared Spectroscopy, Cheng Wenyu, Guan Xiao, Liu Jing
Food and Machinery
The reasonability using near-infrared spectra (NIRS) for detection of melamine in liquid milk were studied. NIRS of samples were obtained by Fourier Transform Infrared Spectroscopy(FTIR) spectrometer, samples of liquid milk with adding melamine were analyzed while characteristic signals were extracted by wavelet transform and principal component analysis. Quantitative analysis was taken by General the Regression Neural Network(GRNN) for the diffuse reflectance spectroscopy of liquid milk adding melamine first. The result is not satisfactory enough that when concentration of melamine is lower than 0.05%, the R2 of predict model is only 0.567. Qualitative discrimination by support vector machine was carried …
Determination Of Imibenconazole In Fruits And Vegetables By Ultra High Performance Liquid Chromatography-Tandem Quadrupole Mass Spectrometry,
2015
Shanghai Deno Products Testing Service Co., LTD, Shanghai 200436, China
Determination Of Imibenconazole In Fruits And Vegetables By Ultra High Performance Liquid Chromatography-Tandem Quadrupole Mass Spectrometry, Chen Jingchun, Chen Sheng, He Yabin, Zheng Xiaoping
Food and Machinery
The sample was purifid by solid phase extraction column. A simple, fast, accurate method for determination of Imibenconazole in fruits and vegetables was developed by ultra high performance liquid chromatography-tandem quadrupole mass spectrometry (UPLC—MS—MS). The linear range of the method is from 1.0 μg/L to 100 μg/L ，and the correlation coefficients were 0.998 7～0.999 6, and the detection limit is 1.0 μg/kg. The proposed method has high sensitivity and good reproducibility for determining Imibenconazole.
Determination Of Twelve Elements In Jujube By Inductively Coupled Plasma Atomic Emission Spectrometry (Icp—Aes),
2015
College of Food Science and Pharmacy, Xinjiang Agricultural University, Urmuqi, Xinjiang 830052, China
Determination Of Twelve Elements In Jujube By Inductively Coupled Plasma Atomic Emission Spectrometry (Icp—Aes), Chen Kai, Li Jinyu, Li Qiong, Li Huanrong
Food and Machinery
A method was developed using ICP-AES for the simultaneous determination on the content of trace heavy metals including Na, Mg, Al, K, etc in 3 spieces of jujube of Xin Jiang district. The correlation index of method was greater than 0.998; Determination of elements in addition to the individual value, RSD is less than 5%. The results showed that: xinjiang jujube had rich mineral elements content, which especially in K (＞12 277 μg/g), Ca (＞785 μg/g), Mg (＞ 646 μg/g), Na (425 μg/g), Al (＞179 μg/g), Fe (＞22 μg/g) content is higher, the K and Fe content of Aksu jun …
Using Gc—Ms And Elisa Kits For Comparative Analysis Of Plasticizers In Red Wine,
2015
College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, China
Using Gc—Ms And Elisa Kits For Comparative Analysis Of Plasticizers In Red Wine, Cao Bipu, Cao Yong, Miao Jianyin, Cao Sufang, Liu Guo, Tan Rongwei
Food and Machinery
There were two methods to detect the plasticizers of red wine. The first one was a traditional method(GC-MS) and another one was a new method-ELISA kit. An improved pre-processing of GC-MS and the comparative analysis of the two methods was used to find a novel detection method. The results: there was a little difference for the rate of plasticizer extraction with different pre-treatment. And DIBP, DBP, DEHP were detected. The GC-MS method demonstrated high precision and recovery. The GC-MS method was a excellent method to detect the plasticizers of red wine. The detection results of ELISA kit were 3.4 to …
Research On Toughness Of Cassava Stalk,
2015
School of Material and Mechanical Engineering, Beijing Technology and Business University, Beijing 100048, China
Research On Toughness Of Cassava Stalk, Li Menglin, Wang Tao, Huang Zhigang, Yan Mei
Food and Machinery
In order to study the factors that the influence of the cassava stalk toughness. Orthogonal experiments were used to test cassava stalk with MW-4 universal testing machine And the influencing factors were selected, for cassava stalk variety, placed time, and colliding parts. The results show that: effect of varieties on the impact energy is the largest, while, the impact energy was the smallest when the variety is SC6, placed for 12 days, and the the upper part collision site. Effect of varieties A on the impact toughness is the largest. The impact toughness is the smallest when the variety is …
Flow Field Characteristics Analysis Of Single Vortex Water Washer,
2015
Jiangsu Province Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
Flow Field Characteristics Analysis Of Single Vortex Water Washer, Wu Yan, Jin Guangyuan, Cui Zhengwei
Food and Machinery
The fluid dynamic characteristic of vortex flow washing in a fruits and vegetables washer unit with U-shaped structure was investigated by three-dimensional Computational Fluid Dynamic simulation (CFD). The single vortex flow formed by longitudinal and transverse water jet in washer unit was simulated at different flux rates of longitudinal and transverse water jet. The vortex flow dynamic characteristic in water unit and the effect of vortex flow on strengthening turbulent washing were discussed. The simulation results shows that flux rate has a dominant effect on vortex flow spacious distribution and intensity; the interaction between longitudinal and transverse water jet is …
Determination On Optimal Switching Point Of Two-Stage Feeding In Weighing Packaging Machine,
2015
College of Mechanical Engineering,Tianjin University of Science & Technology, Tianjin 300222, China
Determination On Optimal Switching Point Of Two-Stage Feeding In Weighing Packaging Machine, Su Junming, Li Zhenliang, Li Ya, Liu Baohua
Food and Machinery
Objective Researched the method to calculate the optimal two-stage feeding switch point of weighing packaging machines when it works. Methods Through analyzing the feeding and weighing process and the function of two-stage feeding, researched the effect of two-stage feeding switch point to the packaging speed and accuracy. Then found the range of values. Results The two-stage feeding switch point had an important impact on packaging speed and packaging accuracy, and a certain relationship. The packaging speed was maximized while ensuring the packaging accuracy through chosing the best switch point in the range of values. Conclusions Proposed a method to calculate …
Design Of Stacking Machine For Finished Food Boxes Based On Motion Controller,
2015
Inner Mongolia University for the Nationalities College of Mechanical Engineering College, Tongliao, Inner Mongolia 028000, China
Design Of Stacking Machine For Finished Food Boxes Based On Motion Controller, Wu Xiaoqiang, Huang Yunzhan, Zhao Yongjie
Food and Machinery
A kind of finished food boxes stacking machine was designed based on "PC + motion controller". Taking PC as the upper computer and multi axis motion controller as the lower computer, communication between the upper and lower machine used standard Ethernet, HMI and multi axis motion controller communicated via the RS232/485 standard interface, and completed the stacking work via the upper and lower computer. It can realize the function of stacking, reduce the amount of labor, and improve work efficiency. And it provides a new idea for the design of the stacking machine.
Improvement And Simulation On Material Removing Mechanism Of Aluminum Foil Separator,
2015
Ningbo Institute of Technology, Zhejiang University, Ningbo, Zhejiang 315100, China; Taiyuan University of Science and Technology, Taiyuan, Zhejiang 030024, China
Improvement And Simulation On Material Removing Mechanism Of Aluminum Foil Separator, Zheng Yahong, Li Jiqiang, Zhang Xuechang, Sun Zhongjie
Food and Machinery
Structure of material removing mechanism was improved for the defects of original aluminum foil separator. In this structure transformation, the original cylinder drive is replaced by cam mechanism, forming a new type of material removing mechanism. In the Pro/e environment, surrounding and columniform cam of material removing mechanism conducted parametric design. In Mechanism module, through the motion simulation and measurement verification of material removing mechanism, the relative position of the two cams can be adjusted, ultimately reducing the design cycle and providing a reference for the structure optimization in the later period.
Effect On Preservation Of Fresh-Cut Lettuce By Ozonated Water Combined With Modified Atmosphere Packaging,
2015
College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306,China
Effect On Preservation Of Fresh-Cut Lettuce By Ozonated Water Combined With Modified Atmosphere Packaging, Yu Jiangtao, Xie Jing
Food and Machinery
Investigated, ozonated water combined with modified atmosphere packaging on preservation of fresh-cut lettuce stored at 4 ℃. Results indicated that ozonated water treatment combined with modified atmosphere packaging had prominent effect of controlling the reproduction of bacterial, the decline of water content , the degradation of chlorophyll and the activity of polyphenol oxidase (PPO), reducing its rotten, wilting, yellowing and browning rate. This method maintained high Vc content and sensory quality of fresh-cut lettuce at the same time. Also, it extended shelf-life of fresh-cut lettuce and kept its commodity value at 14th day.In addition, results also indicated that after …
Research On Quality Changes And Spoilage Mechanism Of Leisure Soybean Food During Storage,
2015
Department of Biological and Chemical Engineering, Shaoyang University, Shaoyang, Hunan 422000, China
Research On Quality Changes And Spoilage Mechanism Of Leisure Soybean Food During Storage, Jiang Qionghua, Zhao Liangzhong, Li Huaqiang, Bu Yufang
Food and Machinery
Investigated the changing of components in leisure soybean food during storage by using Nuclear Magnetic Resonance (NMR),and identified the contribution from these components respectively, and discussed the corruption mechanism from the microscopic view. The results indicated that leisure soybean food had three kinds of components mobility-T21,T22,T23,corresponded bound water, free water and fat, respectively. By analyzing the component contents, the first three months was the best in quality for leisure soybeans. The oxidative rancidity of oil produced peroxide led to the oxidant of amino-acid residue, and transformed the bound water in reticulate structure into free …
Study On Effects Of Antioxidant Compounds On Stability Of Linseed Oil,
2015
Changzhou Technical Institute of Tourism & Commerce, Changzhou, Jiangsu 213032, China
Study On Effects Of Antioxidant Compounds On Stability Of Linseed Oil, Wang Jin
Food and Machinery
Using the accelerated oxidation test, this study was conducted to investigate the effects of different combinations of natural antioxidants with synthetic antioxidants on the stability the shelf-life of linseed oil by examining the changes in its acid value and peroxide value. The results showed that a combination of 0.04% oleaginous rosemary, 0.018% butyl hydroxy anisd and 0.018% propyl gallate was found to have the best antioxidant activity. Comparisons of the changes in acid value of linseed oil before and after alkali refining revealed that adding 0.6 or 0.7 g of sodium hydroxide to 4g of linseed oil and allowing them …
Research On Antibacterial Effect Of Eucalyptus Extracts Combined With Oxacillin Against Mrsa,
2015
School of Food & Biological Engineering of Jiangsu University, Zhenjiang, Jiangsu 212013, China
Research On Antibacterial Effect Of Eucalyptus Extracts Combined With Oxacillin Against Mrsa, Cui Haiying, Zhang Xuejing, Zhou Hui, Zhao Chengting, Li Wei, Lin Lin
Food and Machinery
Ethanol and water are used respectively to extract the active ingredients of eucalyptus leaves. Then it was researched on the inhibitory effect of the active ingredients on MRSA, and compared the inhibitory effect of the oxacillin with and without eucalyptus extracts addition. The results shows that, the ethanol extract of eucalyptus presents a minimum inhibitory concentration(MIC)from 1 g/L to 5 g/L for MRSA, and the water extract is from 2~10 g/L. With 0.2 g/L of ethanol extract of eucalyptus added, the oxacillin can reduce the MIC of the MRSA from 62.5～250 mg/L to 7.8～31.3 mg/L, and the MIC for all …
Study On Antibacterial Activity Of Phenol Hydroxyl From N-Aryl Schiff Cos Derivatives,
2015
Biochemical Engineering College of Beijing Union University, Beijing 100023, China
Study On Antibacterial Activity Of Phenol Hydroxyl From N-Aryl Schiff Cos Derivatives, Han Yongping, Gong Ping, Li Keyi
Food and Machinery
The N-aryl Chitooligosaccharides (COS) derivatives were firstly synthesized with Benzaldehyde, salicylal and 3,4-two hydroxy benzaldehyde, subsequently was quaternized to enhance its water solubility.The chemical structures of all COS derivatives were characterized by ATR-FTIR or 1H NMR. The antibacterial studies of these COS derivatives were carried out by the inhibition zone diameters methods against E.coli, S.aurueus and P.aeruginosa bacteria. The antibacterial activity results showed N-3,4-two hydroxy benzaldehyde Schiff’s base COS > N-salicylal Schiff’s base COS > N- Benzaldehyde Schiff’s base COS> COS. In comparison to the COS derivatives chemical structure, it was found that the phenol hydroxyl group from N-aryl Schiff COS …
