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Articles 4771 - 4800 of 5782

Full-Text Articles in Food Processing

Effect Of Pressure Associated Medium Temperature Sterilization On Pa/Pe Packaging Materials, Cao Yanli, Tang Yali, Zhao Wei, Lu Lixin Apr 2016

Effect Of Pressure Associated Medium Temperature Sterilization On Pa/Pe Packaging Materials, Cao Yanli, Tang Yali, Zhao Wei, Lu Lixin

Food and Machinery

To study the effect of pressure associated medium temperature treatment on PA/PE materials packed with four kinds of food simulation, the food simulation were distilled water, olive oil, 3%（volume fraction） acetic acid and 15% （volume fraction）ethanol. The treatment pressure were 200 MPa, 400 MPa and 300 MPa, the initial temperature was 10 ℃, 30 ℃ and 50 ℃ respectively, and the holding time was 15min. Changes of material structure were observed by scanning electron microscope, the mechanical and barrier properties of PA/PE were obtained by tests, reasons of the properties changes were further verified by DSC analysis. The high pressure …

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Identification Of Bacteria And Screening Of Dominant Strains From Fermented Glutinous Rice, Chen Jin, Shao Bingjie, Zhu Xiaohao, Wang Suying Apr 2016

Identification Of Bacteria And Screening Of Dominant Strains From Fermented Glutinous Rice, Chen Jin, Shao Bingjie, Zhu Xiaohao, Wang Suying

Food and Machinery

In order to screen dominant lactic acid bacteria during the process of fried glutinous rice cakes making, 7 strains of bacteria were isolated from drain rice milk and fermented wet rice flour in the traditional production process. The strains were identified through morphological observation, Gram staining reaction, catalase test, glucose fermentation experiment and other physiological and biochemical characteristics, and 16S rRNA sequence analyzing. The results showed that, B1, B5-2, B7, B8 were Lactobacillus plantarum, B2 was Bacillus cereus, B5-1 and B6 were Acetobacter indonesiensis. The acid production capacity and growth rate of 4 strains of lactic acid were determined, and …

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Study On Cell Adhesion And Probiotic Characteristics Of Dominant Lactic Acid Bacteria In Traditional Fermented Camel Milk-Shubat, Nuliyan Abudumilike, Sajitanmu Keyisier, Ayiguzha Yibulayin, Nuerguli Reheman Apr 2016

Study On Cell Adhesion And Probiotic Characteristics Of Dominant Lactic Acid Bacteria In Traditional Fermented Camel Milk-Shubat, Nuliyan Abudumilike, Sajitanmu Keyisier, Ayiguzha Yibulayin, Nuerguli Reheman

Food and Machinery

Adopting alternative culture 4 bacteria trains among the superior bacteria were screened from Xinjiang camel acid -milk. Identified as lactic acid bacteria, and own high ability of resistance to acid and salt. The adhensive ability of the strains to cell line Caco-2 was tested via morphological observation and cell counting under microscope. The amount of cholesterol assimilated by the bacteria was measured by high performance liquid chromatography ( HPLC). As results, Le2-1 （Leuconostoc lactis strain）, M4-3-2（Enterococcus sp.）, M3-1 （Enterococcus faecium strain）, M3-3 （Lactobacillus brevis strain） were adhensive to Caco-2. M3-1 was the most adhesive strain among the four tested strains.The …

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Analysis Of Main Nutrients, Bioactive Compounds And Antioxidant Capacities Inpea Tip, Ma Jie, Sun Bo, Xue Shengling, Xia Xue, Tian Yuxiao, Zhang Fen, Wang Song Apr 2016

Analysis Of Main Nutrients, Bioactive Compounds And Antioxidant Capacities Inpea Tip, Ma Jie, Sun Bo, Xue Shengling, Xia Xue, Tian Yuxiao, Zhang Fen, Wang Song

Food and Machinery

The contents of main nutrients, bioactive compounds and antioxidant capacities among different edible parts (leaves, tendrils and stems) in pea tip were investigated. The results indicated that significant differences were found among different edible parts. The levels of soluble proteins, soluble solids, six bioactive compounds (chlorophyll, carotenoids, vitamin C, proanthocyanidins, flavonoids and total phenolics), and antioxidant capacities were followed as the trends of leaves> tendrils> stems; whereas the highest contents of total sugars and reducing sugars were observed in tendrils. Moreover, extremely significant positive correlation were found between antioxidant capacities and all bioactive compounds, and all the correlation coefficients associated …

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Comparative Analysis Of Essential Oil Components In Eureka Lemon Peel From Different Producing Areas By Gc—Ms, Tu Xunliang, Lv Xiulan, Li Yabo, Yang Shuting, Zhang Li Apr 2016

Comparative Analysis Of Essential Oil Components In Eureka Lemon Peel From Different Producing Areas By Gc—Ms, Tu Xunliang, Lv Xiulan, Li Yabo, Yang Shuting, Zhang Li

Food and Machinery

The essential oil components in the fresh peels of Eureka Lemon from three main producing regions (Sichuan, Yunnan and Guangdong) were extracted by steam distillation extraction and identified by gas chromatography-mass spectrometry (GC—MS). The results indicated that 47, 41 and 39 kinds of compounds were identified in the peels of C_EUR, D_EUR, Y_EUR, and occupied 98.47%, 98.74% and 97.64% of total peak areas, respectively. Three tested samples gave priority to with terpenes, alcohols and aldehydes compounds, but alcohols and aldehydes existed obvious difference. Among the contents of 20 common components was relatively higher, including D-Limonene, γ-Terpinene, α-Terpineol, Terpinen-4-ol and Citral. …

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Mechanical Compression Of Wen 185 Walnut Shell, Li Yong, Zhang Hong, Wang Ping, Shen Liuyang, Gao Yuanzhou, Wu Xiaowei Apr 2016

Mechanical Compression Of Wen 185 Walnut Shell, Li Yong, Zhang Hong, Wang Ping, Shen Liuyang, Gao Yuanzhou, Wu Xiaowei

Food and Machinery

In order to improve the design and manufacture of walnut processing machinery, mechanical properties for compression of whole solid, hollow walnut were analyzed to learn shell breaking process in different loading direction, and reduce mechanical damage of walnut seed in breaking shell process. Hollow walnut which H2O contents (4%, 6%, 8% and 10%) were compression tested by microcomputer controlled mechanical through different loading rate (100, 200, 300 and 400 mm/min). Meanwhile, the force-deformation curves were analyzed and the rupture force, rupture energy, rupture power, and elastic modulus were performed to the basic characteristic quantity in significance. The results showed that: …

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A Description And Comparison On Software For Food Predictive Microbiology, Liu Jing, Du Guangquan, Guan Xiao Apr 2016

A Description And Comparison On Software For Food Predictive Microbiology, Liu Jing, Du Guangquan, Guan Xiao

Food and Machinery

In recent years, predictive microbiology and risk assessment software have obtained certain development. Predictive microbiology develops the models that describe and predict the growth or decline of microbes under specified environmental conditions. In this paper, an overall description and comparison of the 16 software tools are presented based on some different criteria ,such as the modeling approach, functional modules, the environmental factors (temperature, pH, aw), the different type of media and the different type of the provided microorganisms. For the fields of current food research and microbiological research, the study provide new idea and reference value for food predictive research …

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Risk Pre-Warning Of Deterioration In Finished Sauce With Microbial Contamination, Jiang Xuewei, Ye Jing, Zhou Shangting, Xu Yantao, Fu Yulin, Chen Sheng Apr 2016

Risk Pre-Warning Of Deterioration In Finished Sauce With Microbial Contamination, Jiang Xuewei, Ye Jing, Zhou Shangting, Xu Yantao, Fu Yulin, Chen Sheng

Food and Machinery

In order to achieve the purpose of the risk pre-warning about the deterioration occurring in the finished sauce with microbial contamination, 4 kinds of physicochemical indexes were compared and analyzed, including the content of reducing sugar, total acid, ammoniacal nitrogen and diacetyl. The results showed that the finished sauce deteriorated because of the contamination of salt-tolerance bacillus, and its physicochemical indexes changed significantly. The reducing sugar content decreased drastically and the content of total acid, ammoniacal nitrogen and diacetyl increased obviously. It can be judged that the sauce is deteriorated while the decreasing amplitude of reducing sugar content reach to …

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Synthesis Of Long Chain Parabens Catalyzed By Solid Superacids And Determination Of Antimicrobial Activity, Hou Yanbing, Liang Xiaowei, Yan Rian, Ou Shiyi Apr 2016

Synthesis Of Long Chain Parabens Catalyzed By Solid Superacids And Determination Of Antimicrobial Activity, Hou Yanbing, Liang Xiaowei, Yan Rian, Ou Shiyi

Food and Machinery

Segregative and recyclable solid superacids SO2-4/TiO2 and SO2-4/Fe2O3 were prepared by the method of coprecipitation and wet impregnation, used as catalysts in the synthesis of undecylparaben and dodecylparaben. The MIC(minimal inhibitory concentration) of the ethylparaben, propylparaben, undecylparaben and dodecylparaben against Staphylococcus aureus, Bacillus subtilis, Listeria monocytogenes, Escherichia coli, Salmonella enteritidis, Saccharomyces cerevisiae,Trichoderma spp were determined. The synthesis conditions were optimized as follows: catalyst SO2-4/TiO2, ratio of alcohol and acid 6︰1, time 4.5 h, temperature 130～140 ℃, catalyst as 3.50% p-hydroxybenzoic acid, the yields were 55.29%, 57.02%. Second, catalyst SO2-4/Fe2O3, ratio of alcohol …

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Rapid Detection Of Allura Red In Hard Candy Using Raman Scatter Spectroscopy, Chen Si, Guo Ping, Luo Pengjie, Wu Ruimei, Wang Wenjun, Fang Tian Apr 2016

Rapid Detection Of Allura Red In Hard Candy Using Raman Scatter Spectroscopy, Chen Si, Guo Ping, Luo Pengjie, Wu Ruimei, Wang Wenjun, Fang Tian

Food and Machinery

Raman spectroscopy was employed to detect the allura red in hard candy using portable raman spectrometer. After attributed and analyzed the raman peaks of allura red by density functional theory method and normal raman spectroscopy, six characteristic raman peaks were confirmed which were 1 222, 1 272, 1 330, 1 408, 1 500 and 1 580 cm-1, respectively. Then the standard curve was established under the characteristic raman peaks with 1 500 cm-1. The results indicated that the curve possessed a good linear relationship between 0.1～1.0 g/kg, the determination coefficient was 0.995, average recovery of allura …

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Optimization On Determination Of Total Polyphenol Content In Sea Buckthorn Wine By Folin-Ciocalteu Colorimetric Method, Niu Guangcai, Yan Gongxin, Zhu Dan, Wei Wenyi, Li Shiyan, Liu Zhiming Apr 2016

Optimization On Determination Of Total Polyphenol Content In Sea Buckthorn Wine By Folin-Ciocalteu Colorimetric Method, Niu Guangcai, Yan Gongxin, Zhu Dan, Wei Wenyi, Li Shiyan, Liu Zhiming

Food and Machinery

Optimizeed the optimal conditions of Folin-Ciocalteucolorimetry, which was used to determine the total polyphenols content in sea buckthorn wine, and the sea buckthorn wine were investigated by orthogonal experiments combined with single factor experiments by using gallic acid as the standard. The results indicated that the total phenol contents of sea buckthorn wine could be well calculated according to their colorimetric absorption at 735 nm by applying Folin-Ciocalteu reagent 1.0 mL and 5 mL distilled water, 7.5%Na2CO3 3 mL, at 30 ℃ for colorimetric reaction, and there was a good linearity between content of phenol and absorbance in the …

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Fast Determination Of Glyphosate And Aminomethyl Phosphonic Acid Residues In Tea By Quechers And Uplc/Ms/Ms, Cao Hui, Zheng Junke, Huang Liying, Sheng Huadong Apr 2016

Fast Determination Of Glyphosate And Aminomethyl Phosphonic Acid Residues In Tea By Quechers And Uplc/Ms/Ms, Cao Hui, Zheng Junke, Huang Liying, Sheng Huadong

Food and Machinery

A method was developed for determination of glyphosate and aminomethyl phosphonic acid residues in tea by QuEChERS and UPLC/MS/MS. The samples were extracted with water and cleaned up with dispersive-solid phase extraction. The target analytes were separated by CORTECSTM UPLC C18+ column with gradient elution using acetonitrile and 0.1% ammonium hydroxide solution as mobile phases. Negative electrospray ionization with multiple reaction monitoring mode was used in the detection. Internal standard method was used to determine the results. The linear ranges were 5 to 500 μg/L. The limit of detection (LOD) of this method were 10 μg/kg, and the limit …

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Improvement Of Determination Method Of Total Flavonoids In Extract Of Ginkgo Biloba Leaves Of Capsules, Lei Aiqiu, Hua Yanglin, Sun Weizheng Apr 2016

Improvement Of Determination Method Of Total Flavonoids In Extract Of Ginkgo Biloba Leaves Of Capsules, Lei Aiqiu, Hua Yanglin, Sun Weizheng

Food and Machinery

Flavonoids are the pharmacologically important chemical groups. NaNO2-Al(NO3)3-NaOH colorimetry assay for determination of total flavonoids in health foods have some defects. In this work, contribution of six key flavonoids components of extract of Ginkgo biloba leaves to total flavonoids content in the NaNO2-Al(NO3)3-NaOH colorimetry assay were evaluated. Results showed that quercitin made the most contribution to total flavonoids content. Sample quantity, alcohol concentration of eluant, and ultrasonic times in this assay were evaluated. Alcohol concentration of eluant and ultrasonic times affected total flavonoids content in HZ Capsules. By …

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Study On Recognition Model For Wild Mushroom Based On Support Vector Machine Of Near Infrared Spectral Diagnosis, Liu Yang, Wang Tao, Zuo Yueming Apr 2016

Study On Recognition Model For Wild Mushroom Based On Support Vector Machine Of Near Infrared Spectral Diagnosis, Liu Yang, Wang Tao, Zuo Yueming

Food and Machinery

A new method for discrimination of wild Mushroom by means of near infrared spectroscopy (NIRS) was established. Visible and near infrared reflectance spectra of 13 different types of mushroom including 3 wild mushrooms were collected with a portable near infrared spectrometer ( ASD Fieldspec3 ). Based on the analysis of spectrum, are the characteristics absorption peaks of polysaccharides, protein, fat of the mushroom are1 483, 1 727, 1 930, 2 100, 2 180, 2 310 nm, which of wild mushroom in are significantly higher than other mushrooms. With these 6 wavelengths of absorbance as input variables to establish recognition model …

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Kinematics Simulation About Meshing Impact Performance Of A Planetary Gear Train, Li Tongjie, Wang Juan, Yao Zhihua, Yi Kechuan Apr 2016

Kinematics Simulation About Meshing Impact Performance Of A Planetary Gear Train, Li Tongjie, Wang Juan, Yao Zhihua, Yi Kechuan

Food and Machinery

Based on the nonlinear bending-torsional coupling vibration mode of a NGW Planetary Gear Train, the meshing impact performance of the planetary gaear train is studied by using Runge-Kutta direct numerical integration method and some influence rules were gotten on the parameters such as composite meshing error and Power. The study results reveal that there are two error thresholds, one is small and another is big. The impact phenomenon will not appear if the composite meshing error value is smaller than the small error threshold. The unilateral impact phenomenon will appear if error value is bigger than the small error threshold …

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Simulation And Analysis Of Chili Flow Characteristics In Bending Filling Pipes, Zhou Peng, Yu Liya, He Ling, Yang Zhengtong Apr 2016

Simulation And Analysis Of Chili Flow Characteristics In Bending Filling Pipes, Zhou Peng, Yu Liya, He Ling, Yang Zhengtong

Food and Machinery

In order to optimize the design of chili's Filling pipeline, taking solid-liquid multiphase fluid of chili as the research content, 90° horizontal bend model as the research object, calculating the suitable turbulence critical speed for the chili filling pipeline, using the mixture model of multiphase flow, the distribution of velocity field and density field was analyzed with inlet flow rate as 5, 7, 9 m/s. The results show that it is easy to form stratification when the speed is less than the critical speed. Geometric bend has large influence on multiphase flow field. The length of straight pipe section between …

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Fem Analysis And Experimental Research On Large Opening Ellipsoidal Head, Zhao Ning, Dong Jinshan, Yang Yunyu Apr 2016

Fem Analysis And Experimental Research On Large Opening Ellipsoidal Head, Zhao Ning, Dong Jinshan, Yang Yunyu

Food and Machinery

Three-dimensional finite element models of standard ellipsoidal heads with large opening nozzle structure are built for calculation, and the stress distribution is analyzed. An analysis reinforcement method of standard ellipsoidal heads with large opening is proposed, which can be realized though equivalent stress coefficient computation. Experimental stress analysis on typical structure with large opening is conducted by resistance strain measurement. The experimental results show good agreement with finite element calculations, relative error being less than 10% which meets the requirements of engineering design. Then the accuracy of analysis reinforcement method of standard ellipsoidal heads with large opening given in this …

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Motion Simulation On Materials Inside Whitening Chamber Of Sand-Roller Rice Machine Based On Discrete Element Method, Pang Xiaoxia, Ruan Jinglan Apr 2016

Motion Simulation On Materials Inside Whitening Chamber Of Sand-Roller Rice Machine Based On Discrete Element Method, Pang Xiaoxia, Ruan Jinglan

Food and Machinery

Taking the vertical sand-roller rice milling machine as an example, this paper carries out the simulation calculation of the materials’ movements inside the whitening chamber based on the discrete element method via the analysis software EDEM. The study sets up the discrete model of the whitening chamber and the brown rice with corresponding parameters and performs the discrete element simulation on material flows inside the whitening chamber; for the convenience of the analysis, the data of the motion locus curve and the force on the brown rice during the whitening process are presented with charts. These simulation results would provide …

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Design And Separation Mechanism On Separator For Pea Embryo Skin By Centrifugation, Dong Huanjun, Li Jiapeng, Sun Chuanzhu Apr 2016

Design And Separation Mechanism On Separator For Pea Embryo Skin By Centrifugation, Dong Huanjun, Li Jiapeng, Sun Chuanzhu

Food and Machinery

A centrifugal pea embryo skin separator was designed, and its separation mechanism was also analyzed. The embryo skin did the circular motion under the action of the friction force when it entered the high-speed rotating disk and was thrown out by overcoming the friction force.Due to the different apparent density between the bean embryo and skin, the larger apparent density of the bean embryo was throwninto the outside received barrel, and the smaller apparent density of the bean skin was fallen into the inside received barrel. So chang the height of the received barrel relative to the separation disc can …

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Research Of Super High Pressure Food Processing Equipment’S Synchronization Control System, Luo Wei Apr 2016

Research Of Super High Pressure Food Processing Equipment’S Synchronization Control System, Luo Wei

Food and Machinery

High pressure sterilization equipment’s strict sealing requires the synchronization system which push plug’s movement must have high synchronization accuracy. However, because of the dynamic load, friction, oil leakage, the plugeasily prone to deflection, which are greatly affecting the sealing performance. Considering about this problem, the synchronous system’s mathematical model was established. And then, the control method was also proposed: a PID control was using to the horizontal motion. And the fuzzy PID was used to control the deflection movement. The simulation results show that: the plug under this control strategy not only has a high precision horizontal motion, but also …

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Visual Inspection Method For Food Packaging Character Printing Based On Labview, Yang Huibin, Yan Juan Apr 2016

Visual Inspection Method For Food Packaging Character Printing Based On Labview, Yang Huibin, Yan Juan

Food and Machinery

At present, most code printings of food packaging are still inspected artificially. It will cause miss or error inspection in a certain extent, so that the food security will be impacted. A visual inspection method for food package code printing is put forward to solve this problem. Using LabVIEW as the development platform, a visual inspection system of code printing was developed. The key steps of image acquisition, preprocessing, orientation and recognition are detailed introduced. Finally, tests were performed on the samples. The results showed that the recognition accuracy of this method was high, thus the automatic sorting of food …

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Heat Transfer Characteristic And Pre-Cooling System Power Consumption Analysis Of Variable Temperature Pre-Cooling Process Of Tomato, Wang Mingtao, Liu Huanwei, Gong Hansheng Apr 2016

Heat Transfer Characteristic And Pre-Cooling System Power Consumption Analysis Of Variable Temperature Pre-Cooling Process Of Tomato, Wang Mingtao, Liu Huanwei, Gong Hansheng

Food and Machinery

The fruits and vegetables pre-cooling effect and power consumption are greatly influenced by the supply air temperature of pre-cooling process. The heat transfer model of tomato was developed by theory of heat transfer and used to predict tomatoes of different diameters temperature change during the different temperature pre-cooling process. Then pre-cooling experiments of tomato were performed with the developed pre-cooling experiment setup. The relationships between supply air temperature, tomato diameter and temperature change rate of tomato, pre-cooling system power consumption were studied based on theoretical analysis and experimental data. The results show that the mean error between simulated and measured …

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Modeling And Evaluating On Growth/No Growth Boundaries Of Bacillus Cereus On Soft-Baked Mussels, Qu Feixiang, Li Xueying, Yang Xianshi, Liu Zunlei Apr 2016

Modeling And Evaluating On Growth/No Growth Boundaries Of Bacillus Cereus On Soft-Baked Mussels, Qu Feixiang, Li Xueying, Yang Xianshi, Liu Zunlei

Food and Machinery

The growth/no growth interface model of Bacillus cereus (ATCC49064 and DSMZ 4312) on soft-baked mussels was established based on storage temperature (T), water activity (Aw) and pH, and its fitting and the validation behavior of Bacillus cereus (YB001) from soft-baked mussels were analyzed and evaluated. And this model was compared with the established growth/no growth interface model of Bacillus cereus in Brian Heart Infusion (BHI) media. The total equation of this model is Lopit(P)=-208.457-2.167·T+35.304·pH+705.573·Bw+1.117·T·pH-7.072·T·Bw-174.946·pH·Bw. It showed a reasonable goodness of fit of this model due to R2-Nagelkerke=0.979 and χ2=0.019(df=8, P=1), and the predicted concordance rate of …

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Dynamic Numerical Simulation And Experimental Research On Internal Flow Field Of Refrigerated Containers, Tian Jinjin, Wang Sasa, Zhang Zhe, Li Man, Yu Susu, Hao Junjie Apr 2016

Dynamic Numerical Simulation And Experimental Research On Internal Flow Field Of Refrigerated Containers, Tian Jinjin, Wang Sasa, Zhang Zhe, Li Man, Yu Susu, Hao Junjie

Food and Machinery

The flow field uniformity in refrigerated container is one of the important factors that affect the food storage quality. Based on numerical simulation approach, three-dimensional unsteady computational fluid dynamics (CFD) model of refrigerated container has been established to find the air flow characteristics in this paper. A computational fluid dynamics program FLUENT has been used to predict the unsteady air flow and temperature fields inside the refrigerated container. The air flow and temperature fields inside the refrigerated container and the effect of stacking method on the air flow and temperature fields have been discussed. The numerical result shows that the …

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Isolation And Identification Of Dominant Spoilage Bacteria From Fresh-Cut Lotus Root With Cold Storage, Liu Xiaofang, Wang Faxiang, Yu Jian, Shan Shiping, Guo Senlin, Liu Yongle Apr 2016

Isolation And Identification Of Dominant Spoilage Bacteria From Fresh-Cut Lotus Root With Cold Storage, Liu Xiaofang, Wang Faxiang, Yu Jian, Shan Shiping, Guo Senlin, Liu Yongle

Food and Machinery

Growth and reproduction of specific spoilage bacteria contribute significantly to the spoilage of fresh-cut fruits and vegetables. In this paper, the change regulation of total colony count of fresh-cut lotus root during cold storage period was firstly analyzed, then the spoilage bacteria were separated by dilution-plate method, and the dominant spoilage bacteria were identified using 16S ribosomal DNA based bacterial identification system. The results showed that when the fresh-cut lotus root was preserved at 4 ℃ for 8 days, and its total colony count increased to 4.17×105 CFU/g, which the early microbial spoilage was thought to be developed. Based …

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Effect On Preservation Of Hami Melon Of Coating Blended Film With Carboxymethyl Chitosan / Alginate, Zeng Yuanyuan, Zhou Yan, Xie Jing, Wang Xichang, Zhou Ran Apr 2016

Effect On Preservation Of Hami Melon Of Coating Blended Film With Carboxymethyl Chitosan / Alginate, Zeng Yuanyuan, Zhou Yan, Xie Jing, Wang Xichang, Zhou Ran

Food and Machinery

The effect of coating blended film with carboxymethyl chitosan/alginate was examined on Hami melon during storage at 23 ℃. Carboxymethyl chitosan, carboxymethyl chitosan and alginate, and seaweed sodium blend with cinnamon aldehyde compound, which were prepared by three kinds of coatings complex preservative for Hami melons were coated. By measuring polyphenol oxidase (PPO) activity, catalase (CAT) activity, weight loss, soluble solids content, as well as taste, appearance and flavor and other sensory indicators of, the quality evaluation of Hami melons for quality evaluation was done. The results showed that: chitosan/sodium alginate blend coating process can reduce the weight loss and …

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Effect Of Extration Method On Volatile Oils' Chemical Components From Leaves Of Hibiscus Syriacus L. And Lung Cancer Cell A549 Inhibitory Activities, Wei Qiang, Lu Lun, Long Xianshun, Liu Yuanyuan Apr 2016

Effect Of Extration Method On Volatile Oils' Chemical Components From Leaves Of Hibiscus Syriacus L. And Lung Cancer Cell A549 Inhibitory Activities, Wei Qiang, Lu Lun, Long Xianshun, Liu Yuanyuan

Food and Machinery

The volatile oils from leaf of Hibiscus syriacus L. ,which extracted by supercritical fluid extraction of carbon dioxide (SFE—CO2) and steam distillation extraction(SDE) were separated and identified by GC—MS, respectively. And then studied the lung cancer cell A549 inhibitory activities by inhibiting rate and cell apoptosis rate for lung cancer cell A549. Forty components were identified from the SFE—CO2 volatile oil. Forty-seven components were identified from the SDE volatile oil. The SFE—CO2 and SDE essential oils of the leaf showed their activities against lung cancer cells A549 with the inhibition rate of 80.08% and 62.75%, which indicated different …

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Optimization On Extraction Of Essential Oil From Citrus Peel By Press-Shear Assisted Interaction Technology, Wu Feifei, Zhao Liangzhong, Li Huaqiang, Xu Yongping, Li Xiaoyu, Li Shuying Apr 2016

Optimization On Extraction Of Essential Oil From Citrus Peel By Press-Shear Assisted Interaction Technology, Wu Feifei, Zhao Liangzhong, Li Huaqiang, Xu Yongping, Li Xiaoyu, Li Shuying

Food and Machinery

The extraction conditions were studied for essential oil from citrus peel using press-shear assisted interaction technology (PAI). Taking the citrus peel as main raw materials, potassium chloride as adjuvant, petroleum ether as the organic solvent, the optimum extraction parameters of essential oil from citrus peel were investigated using the ratio of material to solvent, grinding time, milling ball number and the dosage of potassium chloride in one-factor experiment and orthogonal design. The results showed that the highest extraction efficiency of essential oil was up to 1.73% when the dosage of potassium chloride was 3% (m/m), milling ball number was 10, …

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Purification And Composition Analysis On Polyphenols From Sonchus Oleraceus L. By Macroporous Resin, Zheng Cuipin, Tian Chengrui, Ma Tingting, Quan Meiping Apr 2016

Purification And Composition Analysis On Polyphenols From Sonchus Oleraceus L. By Macroporous Resin, Zheng Cuipin, Tian Chengrui, Ma Tingting, Quan Meiping

Food and Machinery

The adsorption characteristics and purification process of the polyphenols from Sonchus oleraceus L. by macroreticular resin were investigated. Meanwhile, the chemical composition on crude and pure products of the polyphenols were also analyzed. The static capacity absorption, static capacity desorption, static adsorption isothermal (Langmuir and Freundich), dynamic absorption ratio and dynamic elution ratio of six types of macroreticular resin were studied and compared, in order to find the best one, and the adsorption and desorption performances of the best one were studied in detail. The results showed that the type of NKA-9 resin gave the best effect on separation with …

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Comparison Of Extraction Process Of Polysaccharide Of Auricularia Auricular, Zhao Yuhong, Lin Yang, Zhang Ligang, Zhang Zhi, Wang Zhenyu Apr 2016

Comparison Of Extraction Process Of Polysaccharide Of Auricularia Auricular, Zhao Yuhong, Lin Yang, Zhang Ligang, Zhang Zhi, Wang Zhenyu

Food and Machinery

Compared the High-speed Shear Dispersing Emulsifier (HSDE) and the Enzymic Method to extract polysaccharides from Auricularia auricular by treating the Auricularia auricular polysaccharides yield as the indicator. The results showed that the optimum conditions for HSDE were: shearing speed 21 000 r/min, solid-liquid ratio 1︰110 (m/V), shearing time 6 minutes and temperature 80 ℃; the optimum conditions for enzymic method were :concentration of enzyme 1.2%, enzymatic hydrolysis time 60 min, pH 5.5 and temperature 55 ℃. The extraction yields were 24.43% for HSDE and 9.29% for the enzymic method. Compare to the enzymic method, HSDE is more effective, time-saving and …

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