Studies On Degradation Of Pectin During Pepper Peeling By Solid-State Fermentation,
2016
College of Food Science and Technology, Hainan University, Haikou, Hainan 570228, China
Studies On Degradation Of Pectin During Pepper Peeling By Solid-State Fermentation, Wang Mengjie, Liu Sixin, Chen Haiming, Hu Qisong, Li Congfa
Food and Machinery
Infrared spectroscopy, ion chromatography and HPLC were used to analyze the changes of pectin components and their contents during pepper peeling by solid-state fermentation. The results showed that the water-soluble pectin and acid-soluble pectin were high degree of esterification pectin, while the chelating pectin was low degree of esterification pectin. The content of water-soluble pectin increased in the first 36 h and then decreased during fermentation, while the content of acid-soluble pectin and chelating pectin increased after ripening with ethephon and then decreased during the whole fermentation process. Galacturonic acid in the pectin backbone was degraded rapidly in 24～48 h. …
Correlation Between Sensory Evaluation And Instrumental Analysis Of Kamabokos Texture,
2016
School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
Correlation Between Sensory Evaluation And Instrumental Analysis Of Kamabokos Texture, Wang Dan, Jiang Qixing, Xu Yanshun, Xia Wenshui, Wang Haiou
Food and Machinery
Texture is a decisive factor in the quality of Kamabokos. In order to find an objective evaluation method of Kamabokos’ texture，the correlation was studied between sensory evaluation and TPA results by collecting different brands Kamabokos. 10 kinds of Kamabokos, which were most popular in market, were collected, evaluated by the sensory evaluation.Meanwhile, the profile analysis was made by TPA (Texture Profile Analysis). Then PCA (Principal component analysis) and correlation analysis of the determination results were studied. The results showed that there was correlation between the sensory evaluation and TPA analysis by texture analyzer. For further evaluation of Kamabokos, stepwise regression …
Effect Of Pressure Associated Medium Temperature Sterilization On Pa/Pe Packaging Materials,
2016
College of Mechanical Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
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 …
Identification Of Bacteria And Screening Of Dominant Strains From Fermented Glutinous Rice,
2016
Tianjin Key Laboratory of Food and Biotechnology, Tianjin 300134, China; College of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China
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 …
Study On Cell Adhesion And Probiotic Characteristics Of Dominant Lactic Acid Bacteria In Traditional Fermented Camel Milk-Shubat,
2016
College of Life Science, Xinjiang Normal University, Urumqi, Xinjiang 830054, China
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 …
Analysis Of Main Nutrients, Bioactive Compounds And Antioxidant Capacities Inpea Tip,
2016
College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan 611130, China;Bijie Institute of Agricultural Science, Bijie, Guizhou 551700, China
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 …
Comparative Analysis Of Essential Oil Components In Eureka Lemon Peel From Different Producing Areas By Gc—Ms,
2016
College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
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. …
Mechanical Compression Of Wen 185 Walnut Shell,
2016
College of Mechanic and Electrical Engineering, Tarim University, Alar, Xinjiang 843300, China; Xinjiang Uygur Autonomous Region general Institutes of Higher Education Key Lab of Modern Agriculture Engineering, Alar, Xinjiang 843300, China
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 H2O 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: …
A Description And Comparison On Software For Food Predictive Microbiology,
2016
College of Information Engineering, Shanghai Maritime University, Shanghai 201306, China
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 …
Risk Pre-Warning Of Deterioration In Finished Sauce With Microbial Contamination,
2016
College of Chemical & Biological engineering, Changsha University of Science & Technology, Changsha, Hunan 410004, China
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 …
Synthesis Of Long Chain Parabens Catalyzed By Solid Superacids And Determination Of Antimicrobial Activity,
2016
Department of Food in Science and Technology, Jinan University, Guangzhou, Guangdong 510000, China
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/TiO2 and SO2-4/Fe2O3 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/TiO2, 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/Fe2O3, ratio of alcohol …
Rapid Detection Of Allura Red In Hard Candy Using Raman Scatter Spectroscopy,
2016
Institute of Food and Biological Engineering, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China
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 …
Optimization On Determination Of Total Polyphenol Content In Sea Buckthorn Wine By Folin-Ciocalteu Colorimetric Method,
2016
College of Food Science, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China
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%Na2CO3 3 mL, at 30 ℃ for colorimetric reaction, and there was a good linearity between content of phenol and absorbance in the …
Fast Determination Of Glyphosate And Aminomethyl Phosphonic Acid Residues In Tea By Quechers And Uplc/Ms/Ms,
2016
Zhejiang Institute of Quality Inspection Science, Hangzhou, Zhejiang 310018, China
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 …
Improvement Of Determination Method Of Total Flavonoids In Extract Of Ginkgo Biloba Leaves Of Capsules,
2016
College of Light Industry and Food Sciences, South China University of Technology, Guangzhou, Guangdong 510640, China; Infinitus (China) Co., Ltd., Guangzhou, Guangdong 510665, China
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 …
Study On Recognition Model For Wild Mushroom Based On Support Vector Machine Of Near Infrared Spectral Diagnosis,
2016
Electromechanical Technology Department of Wulanchabu Vocational College, Jining, Inner Mongolia 012000, China
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 …
Kinematics Simulation About Meshing Impact Performance Of A Planetary Gear Train,
2016
College of Mechanical Engineering, Anhui Science & Technology University, Chuzhou, Anhui 233100,China
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 …
Simulation And Analysis Of Chili Flow Characteristics In Bending Filling Pipes,
2016
Key Laboratory of Advanced Manufacturing Technology, Ministry of Education, Guizhou University, Guiyang， Guizhou 550003, China
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 …
Fem Analysis And Experimental Research On Large Opening Ellipsoidal Head,
2016
School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing, Jiangsu 211800, China
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 …
Motion Simulation On Materials Inside Whitening Chamber Of Sand-Roller Rice Machine Based On Discrete Element Method,
2016
Henan University of Technology, Zhengzhou, Henan 450007, China;City University of Zhengzhou, Zhengzhou, Henan 452370, China
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 …
