Pasting And Gel Properties Of Hulless Barley Starch,
2016
East China University of Science and Technology, Shanghai 200237, China
Pasting And Gel Properties Of Hulless Barley Starch, Lu Yuandi, Chang Yaning, Dai Wei, Nie Jiarui
Food and Machinery
The pasting properties of starch from hulless barley were analyzed and compared with those of starches from buckwheat and wheat. Effects of different media (sucrose, NaCl and pH) on pasting was studied. The texture and stability of gels were analyzed. Chemical composition, granule structure, relative crystallinity and transparency of the starches were investigated. The results indicated that highland barley starch (HBS) granule is large, flat oval with A type crystal pattern and crystallinity of 26.7%. The pasting stability was increased with the addition of NaCl and retrogradation had been suppressed greatly. While little effects of sucrose and pH (3～11) on …
Application Of Maillard Reaction To Improve The Quality Of Tobacco Sheets,
2016
School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
Application Of Maillard Reaction To Improve The Quality Of Tobacco Sheets, Zhang Peng, Yu Jingyang, Long Zhangde, Li Zhihua, Zhang Xiaoming
Food and Machinery
According to the principles，the influences of conditions of the maillard reaction, such as reaction time and ratios of exogenous amino acids to sugars, on the improving effects of tobacco sheets were evaluated. The results showed that when the initial pH being 7.0～8.0 and thermal reaction temperature of 70 ℃, the optimum conditions for maillard reaction of extracts were as follows: reaction time of 13h, and the ratios of exogenous amino acids to carbohydrates being Pro︰Gly︰Phe︰Cys︰peptides︰fructose as 13︰13︰13︰2︰0.3︰70. GC—MS was used to analyze the main flavor components of the reaction mixture, and the tobacco sheet samples were sensory evaluated by professionally …
Research On Texture Properties Of Low-Methoxyl Pectin Gel,
2016
College of Food Science and Technology, Hunan Agricultural University, Changsha, Hunan 410128, China
Research On Texture Properties Of Low-Methoxyl Pectin Gel, Hu Wenyue, Shan Yang, Li Gaoyang, Fu Fuhua, Li Qili
Food and Machinery
Taking low-methoxyl pectin and low-methoxyl amidated pectin as research objects, hardness and springiness as measurement index, this study aimed to investigate the effects of pectin concentration, sucrose concentration, calcium concentration and pH value on the texture properties of pectin gel. Through single factor experiment, it could be concluded that the texture properties of low-methoxyl amidated pectin gel was better than the ordinary low-methoxyl pectin. The orthogonal test showed that the optimum condition for low-methoxyl amidated pectin gel were as follows: concentration of pectin was 1.3 g/100 mL, concentration of sucrose was 20 g/100 mL, concentration of calcium was 35 mg/g …
Uptake And Distribution Of Pb And Cd By Hybrid Rice In Soils,
2016
School of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
Uptake And Distribution Of Pb And Cd By Hybrid Rice In Soils, Wang Jingyun, L Ijuan
Food and Machinery
In Jingxing village, Changsha city, soil samples and their respective hybrid rice samples were collected. Based on the content of Pb and Cd in the soils and hybrid rice, whether put in lime before heading had an effect on the accumulation and distribution of Pb and Cd was analyzed. The results showed that, in the common red soil, 94.20% of Pb was distributed in root, only 54.00% of Cd was distributed in root. In red soil with lime, the total distribution of Pb and Cd in root, stem and leaf were increased 2.20% and 17.20%, but the distribution decreased by …
Preparation And Modification Of Magnetic Nanobeads With Promised Biological Applications,
2016
College of Chemical and Biological Engineering, Changsha University of Science & Technology, Changsha, Hunan 410114, China
Preparation And Modification Of Magnetic Nanobeads With Promised Biological Applications, Hu Qiongcan, Ning Jingheng, Liu Zhenguo, Zhang Weifeng, Liu Long, Wang Jianhui
Food and Machinery
Magnetic nanobeads are more and more widely used in the fields of biology and medicine. However, there are still some shortcomings about the magnetic nanobeads such as nonuniform size, poor dispersity, weak magnetism and low functionalization degree after modification. This study was focused on how to acquire magnetic nanobeads by overcoming these drawbacks. Firstly, a highly magnetic nucleus with homogenous sizes, Fe3O4, was prepared. Then, it was successively modified by tetraethoxysilane and 3-aminopropyltriethoxysilane, giving functionalized magnetic nanobeads Fe3O4@SiO2 or Fe3O4@SiO2—NH2, respectively. The influence …
Assessment On Joint Toxicity Of Heavy Metals In Agricultural Products Based On Luminescent Bacteria Method,
2016
College of Food Science and Technology, Hunan Agricultural University, Changsha, Hunan 410128, China; Hunan Province Key Laboratory of Food Science and Biotechnology, Changsha, Hunan 410128, China
Assessment On Joint Toxicity Of Heavy Metals In Agricultural Products Based On Luminescent Bacteria Method, Liu Xia, He Zao, Hu Yuxin, Zheng Shu, Luo Fang
Food and Machinery
Toxic of Pb2+, Cd2+, Hg2+, Pb2++Cd2+, Cd2++Hg2+, Pb2++Hg2+ and Pb2++Cd2++Hg2+ were investigated using luminescent bacteria test. The joint toxicities of heavy metals mixtures were assessed by toxic unit method and additive index method. Results showed that the joint toxicity of Pb2+ with Cd2+ was synergetic in action while the joint toxicities of Cd2+with Hg2+, Pb2+ with Hg2+, and Pb2+ with Cd2+, Hg2+were antagonistic.
Determination Of Streptomycin Residue By In Tomatoes By Synchronous Fluorescence Of Cdte Quantum Dots,
2016
College of Science, Liaoning Technical University, Fuxin 123000, China
Determination Of Streptomycin Residue By In Tomatoes By Synchronous Fluorescence Of Cdte Quantum Dots, Mao Yongqiang, Hu Meina, Li Na, Zhang Dan, Mao Jing
Food and Machinery
Thioglycolic acid capped CdTe quantum dots (QDs) was prepared via hydrothermal synthesis method. Based on the synchronous fluorescence enhancement of CdTe QDs in the presence of streptomycin, a synchronous fluorescence method for the determination of streptomycin residue was established. Influence factors including pH value of buffer solution, concentration of CdTe QDs and reaction time were investigated. The samples were extracted with methanol by ultrasonic processing, and were added into the solution which was composed of 1.0 mL of CdTe quantum dots (3.5×10-5 mol/L) and 1.0 mL of Tris—HCl buffer solution (pH=6.0). After standing for 10 min, the synchronous fluorescence …
On-Line Detection Of Sugar Content Of Nanshui Pears By Vis/Nir Spectroscopy And Variable Selection Methods,
2016
Jiangsu Kaiyi Intelligent Technology Co., Ltd., Wuxi, Jiangsu 214174, China
On-Line Detection Of Sugar Content Of Nanshui Pears By Vis/Nir Spectroscopy And Variable Selection Methods, Sun Tong, Jiang Shuiquan
Food and Machinery
Sugar content (SC) is one of the important internal qualities of Nanshui pears. In this research, Visible/near infrared (Vis/NIR) spectroscopy was used to detect SC of Nanshui pears on-line. Transmission speed of Nanshui pears was 0.3 m/s, and USB4000 spectrometer was used to acquire the spectra of Nanshui pear samples in the wavelength range of 470～1 150 nm. Then three variable selection methods were used to select sensitive wavelength variables, and partial least squares (PLS) was used to develop calibration models of SC for Nanshui pears, also performance of calibration models was compared. The results indicate that Vis/NIR spectroscopy combined …
Determination Of Sugars And Polyols In Domestic And Imported Cigarette Brands With High Performance Liquid Chromatography,
2016
Research and Development Centre, China Tobacco Jiangxi Industrial Co., LTD., Nanchang, Jiangxi 330096, China
Determination Of Sugars And Polyols In Domestic And Imported Cigarette Brands With High Performance Liquid Chromatography, Guo Lei, Su Jiakun, Luo Juanmin, Xu Da, Shao Dengyin, Song Shiqing, Fan Linghui, Lu Huijun
Food and Machinery
High performance liquid hromatography (HPLC) was developed to detect fructose, glucose, maltose, sucrose, glycerol, propylene glycol and sorbitol in tobacco. Samples were separated in Hi-Plex Ca cation ion exchange column with ultra pure water as mobile phase, refractive index detector as detector, and injection volume 15 μL, velocity of 0.4 mL/min, column temperature 80 ℃. The results show that the recoveries of sugars and polyols ranged from 97% to 108% with RSD of 0.89%～1.39% in the limit of detection of 1.5～2.0 mg/L. Meanwhile. Thirteen domestic and imported cigarette brands were analyzed by using this method. Results indicate that the propylene …
A Comparative Research On Detection Methods Of Procyanidins From Chestnut Shells,
2016
Environmental and Biological Engineering College, Wuhan Technology and Bussiness University, Wuhan, Hubei 430065, China
A Comparative Research On Detection Methods Of Procyanidins From Chestnut Shells, Wei Qin
Food and Machinery
Determining the content of procyanidins from chestnut shells respectively with two kinds of methods. The average purity of purified product was 74.78% (RSD=0.99%) by using HPLC. Firstly optimizing molysite catalytic chromogenic condition of colorimetry to determine the colorimetric optimization of procyanidins from chestnut shells (CSPCs) by colorimetry with ferric ions as catalysis agent, on the basis of single-factor experiments, an orthogonal experimental design was employed, with Absorbance of extract as an index, to optimize four factors. The optimum colorimetric conditions were Fe3+ concentration of 0.01 g/mL, reaction time of 40 min, reaction temperature of 100 ℃, butanol-hydrochloric acid volume …
Optimization Of Extraction Process For Hs—Spme In Gc—Ms Of Volatile Compounds In Flavor Pickle Goose,
2016
College of Food, Sichuan Agriculture University, Yaan, Sichuan 625014, China
Optimization Of Extraction Process For Hs—Spme In Gc—Ms Of Volatile Compounds In Flavor Pickle Goose, Zhou Hengliang, Hu Yujiao, Li Cheng, Liu Aiping
Food and Machinery
The optimal extraction fiber was selected by comparing the extraction effect of different extraction fiber. Under this condition, response surface methodology was employed to optimize HS—SPME extraction conditions for volatile components in flavor pickle goose. The effects of extraction temperature, extraction time and desorption time on the total of peak area and the total number of volatile substances. The volatile compounds in flavor pickle goose were determined through SPME—GC—MS. Results indicated that the optimal extraction conditions of flavor pickle goose was obtained as follows: extraction fiber 75 μm CAR/PDMS, extraction temperature 55 ℃, extraction time 53 min, desorption time 4 …
Optimizationon Determination Conditions For Aromatic Components Of Sichuan Xiaoqu Chinese Spirit,
2016
Bioengineering Institute, Sichuan University of Science＆Engineering, Zigong, Sichuan 643000, China
Optimizationon Determination Conditions For Aromatic Components Of Sichuan Xiaoqu Chinese Spirit, Wu Hechuan, Zhou Jian, Zhang Suyi, Ma Yingying, Yang Jiangang
Food and Machinery
Headspace solid-phase microextraction (HS—SPME) and gas chromatography coupled with mass spectrometry (GC—MS) were used for the qualitative determination of aromatic components in Sichuan Xiaoqu Chinese spirit samples. The effect factors of HS—SPME were optimized, such as alcohol content in sample，sample volume in headspace glass vial, concentrations of sodium chloride, equilibrium temperature and time, desorption time. The best extraction performance was achieved under the following conditions: 20% vol alcohol content in sample，45% sample volume in headspace glass vial with addition of 0.1 g/mL sodium chloride, 30min equilibrium time at 45 ℃, 30 min headspace adsorption time. In this condition, there were …
Determination Of Bisphenol A In Canned Food By Hplc Method,
2016
School of Life Sciences, Hefei Normal University, Hefei, Anhui 230000, Chian
Determination Of Bisphenol A In Canned Food By Hplc Method, Dai Huanhuan
Food and Machinery
The hollow fiber liquid phase microextraction high performance liquid chromatography (HF—LPME—HPLC) of bisphenol A in canned food were determined to establish a simple, fast and accurate detection method. Mainly use the two-phase hollow fiber (HF) of liquid phase microextraction (LPME) technology, combined with high performance liquid chromatography to the determination of bisphenol A (BPA) content, so as to realize the optimization of the extractant, sample solution pH, extraction temperature, extraction time and stirring rate and other basic data parameters optimization,The results of the study show that: to octanol as the extractant, the selection of the determination of food sample solution …
Accumulation And Migration Regularity Of Heavy Metals In Plankton And Aristichthys Nobilis,
2016
School of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
Accumulation And Migration Regularity Of Heavy Metals In Plankton And Aristichthys Nobilis, Lu Weiya, Li Jie, Xue Minmin, Yang Mengxin, Liu Jiayu
Food and Machinery
Development of mineral resources along Xiang River has brought serious pollution of heavy metals. What’s more, heavy metals migrate from environment into organism which bring a consequence of security threat. Studied the pollution situation and migration regularity of 7 kinds of heavy metals in water,sediment,plankton and aristichthys nobilis. The results showed that: The concentration of heavy metals in water were below the first class standard limit value of the national surface water environment quality; The pollution degree of heavy metals in sediments were found with the order: Cd>Zn>Pb>Cu>Cr>As>Hg, and the comprehensive pollution grading had …
Design Ideas Andanalysis On Application Prospects Of Potato Starch Processing Machine,
2016
Henan Quality Polytechnic, Department of Food Chemistry, Pingdingshan, Henan 467000, China
Design Ideas Andanalysis On Application Prospects Of Potato Starch Processing Machine, Li Shuhua, Wang Kai, Yan Zehua
Food and Machinery
In this paper, analyzes the status quo of China's potato starch processing, in view of potato planting more dispersed and intolerance storage features, a machine design ideas was put for small potato starch processing, to avoid the traditional potato starch factory wastewater concentration of waste pollution problem, and its application prospect was analyzed.
Design Of Egg Fruit Automatic Processing Device Based On Principle Of Servo,
2016
College of Horticulture and Landscape Architecture, Hainan University, Haikou, Hainan 570228, China
Design Of Egg Fruit Automatic Processing Device Based On Principle Of Servo, Zhang Zhi, Wang Yumo, Zhang Yan, Ren Xibao
Food and Machinery
Based on the principle of servo, an egg fruit automatic processing device with theoretical computational analysis and structure overall design was designed, . Experimental studies showed that egg fruit automatic processing device,based on the principle of servo, could process fresh fruit 1.1 t averagely per hour, and its obtaining rate of juice reached 28%. Juice, with high quality and purity, presented little foreign flavor. Rate of peel collection was up to 97%, and 26% energy consumption lower than that of P6G-300 type machine. It also obtained self-adaptive ability, thus could separate out juices of high quality in a rapid speed, …
Design Of Rubber Fruit Sheller,
2016
Institute of Electrical and Mechanical Engineering, Hainan University, Haikou, Hainan 570228, China
Design Of Rubber Fruit Sheller, Zhao Hua, Wang Tao, He Zhuoliang
Food and Machinery
In order to realize the mechanized shelling operation and improve the shelling efficiency in rubber fruit processing, a sheller mechine was developed. The shelling principle of the proposed mechanism is based on the ripping and rubbing effects produced by the compression and shearing action together. The shelling unit comprises cutting means, pressing means and separating means. The rubber fruit to be shelled fall into the cutting unit by gravity and are shelled by cutting and squeezing action. The shelled kernels and the broken shell drop to the separating means to be separated. The shelling machine is simple, easy to operate …
Establishment Of Model On Growth/No Growth Boundary Of Staphylococcus Aureus Based For Three Factors,
2016
East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China;College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
Establishment Of Model On Growth/No Growth Boundary Of Staphylococcus Aureus Based For Three Factors, Zhao Xueguang, Li Xueying, Yang Xianshi
Food and Machinery
Establishes growth/no growth model of Staphylococcus aureus in the factors of temperature, pH and salt concentration, by R, a software for statistical analysis. The P value was obtained by the model for model parameter values were below 0.01, so reached highly significant. When the temperature at 10 ℃ to 25 ℃, the pH at 4.5 to 5.5, the Sodium chloride salt concentration from 0.5% to 14.5%, each single factor’s effect on Staphylococcus aureus’ growth/no growth was significant, and three factors affected collaborative in other selected range of values.
A Comparative Study On Quality Of Green Radish Treated By Pe Film And Micro-Perforated Film At Cold Storage,
2016
The College of Food Science and Biotechnology of Tianjin Agriculture University, Tianjin 300384, China; Tianjin Engineering Research Center of Agricultural Products Processing, Tianjin 300384, China
A Comparative Study On Quality Of Green Radish Treated By Pe Film And Micro-Perforated Film At Cold Storage, Wu Haiqing, Zhen Runying, He Xinyi, Sun Guibao
Food and Machinery
In order to investigate the effect of the packing materials on the storage quality of green radish, the main physical physics and chemistry indicators and sensory indexes of Weiqing radish were compared at (2.0±0.5) ℃, which treated by the polyethylene film (PE) and micro-perforated film. The results showed that, the contents of vitamin C, acidity, soluble solids content and weight loss rate of the treated by micro-perforated film were higher than those of the PE film group. The amylase activity, contents of reducing sugar and nitrite in the treatment of PE film were higher than those in micro-perforated group. The …
Preparation And Properties Of Chitosan/Paraben Composite Films,
2016
Key Laboratory of Product Packaging and Logistics of Packaging Engineering, Jinan University, Zhuhai, Guangdong 519070, China
Preparation And Properties Of Chitosan/Paraben Composite Films, Liu Jing, Hu Changying, Zeng Shaofu
Food and Machinery
The influence of different concentration of paraben on properties of chitosan/paraben composite films was studied. The structure characterizations of films were characterized by FT-IR and SEM. Transmittance, color, mechanical properties, water vapor permeability, swelling degree and antibacterial properties were also tested. Results: with the increasing of concentration of paraben, the transmittance of composite film decreased and the color became yellow. The highest tensile strength was 37.0 MPa, and the elongation at the break was 55% when the concentration of paraben were 5%(WT) and 25%(WT), respectively. The water vapor permeability was 7.5×10-14 g/(m2·s·Pa) when concentration of paraben was …
