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2018

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Articles 91 - 120 of 1411

Full-Text Articles in Agriculture

Effect Of Ultrafine Grinding On Particle Structure, Effective Compositionsand Antioxidant Activity Of L. Macranthoides, Wu Zhen, Zhan Yong, Li Hong, Yang Yong, Tan Hongjun, Huang Xiaoping, Wang Haiyan Nov 2018

Effect Of Ultrafine Grinding On Particle Structure, Effective Compositionsand Antioxidant Activity Of L. Macranthoides, Wu Zhen, Zhan Yong, Li Hong, Yang Yong, Tan Hongjun, Huang Xiaoping, Wang Haiyan

Food and Machinery

In order to explore the comprehensive utilization value of L. macranthoides, investigated the particle structure, effective compositions contents, dissolution rate and antioxidant activity of L. macranthoides processed ultrafine and common grinding. It was found that the ultrastructure of L. macranthoides was changed by ultrafine grinding, and its cell wall and crude fiber structure were destroyed. The dissolution contents of chlorogenic acid, Macranthoidin B, Dipsacoside B, Luteolin 7-glucoside and caffeic acid were increased after ultrafine grinding. The dissolution rate of chlorogenic acid from ultra-fine griding powder was significantly higher than that of common griding power of L. macranthoides. Furthermore, scavenging ability …

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Design Of Control Systemfor Cylinder Of Tea Green-Removing Machine Using Infrared Source Based On Labview And Arduino, Yu Wenjun, Xiong Aihua, Liu Zhongshou, Pei Gang, Luo Bin, Jin Shanfeng, Huang Chaoqiang, Yang Puxiang, Wu Ruimei Nov 2018

Design Of Control Systemfor Cylinder Of Tea Green-Removing Machine Using Infrared Source Based On Labview And Arduino, Yu Wenjun, Xiong Aihua, Liu Zhongshou, Pei Gang, Luo Bin, Jin Shanfeng, Huang Chaoqiang, Yang Puxiang, Wu Ruimei

Food and Machinery

A control system for t tea green-removing machine using infrared source was developed based on LabVIEW and Arduino, with the And Arduino as the the slave computer and LabVIEW as principal computer. The front panel of the control system was designed using LabVIEW. The control buttons of temperature, humidity and roller speed were designed on the front panel. First, the data of temperature, humidity in the roller and roller speed were collected by Arduino. Then, these data were uploaded to LabVIEW and were analyzed and processed by LabVIEW. According to the processing results, the opening and closing of infrared tube, …

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R&D And Application Evaluation Of Tobacco Steamer Microwavesynergistic Expansion Equipment, Peng Guixin, Li Chunguang, Song Weimin, Che Jing, Liu Qiang, Zhang Junling, Liu Huan, Wang Haibin Nov 2018

R&D And Application Evaluation Of Tobacco Steamer Microwavesynergistic Expansion Equipment, Peng Guixin, Li Chunguang, Song Weimin, Che Jing, Liu Qiang, Zhang Junling, Liu Huan, Wang Haibin

Food and Machinery

Aiming at the defects and shortcomings of the present microwave expansion device for tobacco stem, we developed a steam microwave synergistic expansion equipment. The equipment was mainly composed of material transferring system, microwave system, steam circulation system and heating chamber, using steam and microwave as compound heating energy, and resulted in reducing the microwave power and obtaining high expansion degree. That gave full played to the quality advantages of microwave expansion, and effectively prevented the occurrence of microwave ignition phenomenon. Compared with pure microwave expansion equipment, the expansion degree for tobacco stem had an average increase of 578%; the effective …

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Study On Nanofiltration Separation Of Enzymatic Hydrolysate For Chitosan, Yu Peipei, Xia Wenshui, Zhong Weiwei, Liu Xiaoli, Wang Bin Nov 2018

Study On Nanofiltration Separation Of Enzymatic Hydrolysate For Chitosan, Yu Peipei, Xia Wenshui, Zhong Weiwei, Liu Xiaoli, Wang Bin

Food and Machinery

Based on the previous ultrafiltration separation of chitosan hydrolysate, the technical conditions were investigated, for the nanofiltration separation of ultrafiltrate using roll-type nanofiltration membrane with a relative molecular weight cutoff of 500 Da. The effects of process parameters including the operating pressure and temperature, as well as the pH value of filtrate on the separation and purification of chitosan hydrolysate were studied by indicators of membrane flux, glucosamine removal rate, conductivity and pH value. The optimal operating parameters for nanofiltration were as followed: operation presure 0.50 MPa, operation temperature 35 ℃, and pH 3.0. The final product with 1.21% glucosamine …

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Effects Of Fish Enzymatic Hydrolysates And Fish Collagen Peptides On The Quality Of Frozen Dough, Guo Xingxin, Wang Faxiang, Yu Jian, Li Xianghong, Wang Jianhui, Huang Yiqun, Liu Yongle Nov 2018

Effects Of Fish Enzymatic Hydrolysates And Fish Collagen Peptides On The Quality Of Frozen Dough, Guo Xingxin, Wang Faxiang, Yu Jian, Li Xianghong, Wang Jianhui, Huang Yiqun, Liu Yongle

Food and Machinery

The effects of the silver carp enzymatic hydrolysates and fish collagen peptides on the quality of frozen dough were studied by comparing their yeast survival rate, retention rate of yeast fermentation ability, proofing time and baking properties after freeze-thaw treatment. The results showed that yeast survival rate, retention rate of yeast fermentation ability and proofing time for the 6-freeze-thaw-cycles treated doughs with addition of enzymatic hydrolysates and collagen peptides were 78.95%, 59.06%, 330 min and 61.80%, 46.67%, 318 min, respectively. Which were significantly better than the control group. Bread made from freeze-thawed dough had a smaller specific volume and elasticity …

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Visual Detection Of Beef Quality During Frying Process Byhyperspectral Imaging Technology, Xie Anguo, Kang Huaibin, Wang Feixiang, Wang Bo Nov 2018

Visual Detection Of Beef Quality During Frying Process Byhyperspectral Imaging Technology, Xie Anguo, Kang Huaibin, Wang Feixiang, Wang Bo

Food and Machinery

In this paper, beef mixed with a variety of spices were fried to different degrees. The physical and chemical characteristics, such as moisture content, color and tenderness, and the spectra in 370~1 023 nm were measured. Then the quality detection models and visualization method were constructed. The results showed that the moisture content decreased, and the shear force increased during the frying process, and the change was significant (P＜0.05). There was no significant difference in color between the samples and visible spectrum. While NIR spectra (800～1 023 nm) increased with cooking, and the changes were significant. Based on 100 beef …

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Effect Of Oxidized Tallow On The Flavor Of Natural Beef Flavor, Fan Xiaopan, Liu Jingjing, Liang Liya, Wu Chenyan, Ma Lizhen Nov 2018

Effect Of Oxidized Tallow On The Flavor Of Natural Beef Flavor, Fan Xiaopan, Liu Jingjing, Liang Liya, Wu Chenyan, Ma Lizhen

Food and Machinery

Beef flavor were manufactured from minced beef-bone using the hot-pressure extraction, enzymatic hydrolysis and Maillard reaction control integration technology in this study. Fat moderate oxidation were used to further enhance their flavor. The different oxidized tallows were added during the Maillard reaction, and the oxidation degree of tallow were analyzed. Thereafter, the flavor of oxidized beef flavor was analyzed by electronic nose, electronic tongue and gas chromatography-mass spectrometry. The addition of oxidized tallow could increase the content of aroma compounds in oxidized beef flavor. When the oxidation time was 2 h, it would have the greatest contribution to the aroma …

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Effect Of Thawing Method On Rheology And Protein Of Frozen Chicken Soup, Tang Qi, Xia Yangyi, Hou Baihui, Mei Tiantian Nov 2018

Effect Of Thawing Method On Rheology And Protein Of Frozen Chicken Soup, Tang Qi, Xia Yangyi, Hou Baihui, Mei Tiantian

Food and Machinery

The effects of different thawing methods, including microwave, high-temperature water bath, and room temperature air, on the rheology and protein of frozen chicken soup (freezing at －20 ℃ and －40 ℃) were investigated. The results showed that thawed frozen chicken soup had pseudoplasticity. Under the same shear rate, the viscosity and shear stress of frozen chicken soup at －20 ℃ were greater than those in the －40 ℃ frozen chicken soup. However, the thawing viscosity and shear stress by microwave and high temperature thawing trended preformed almost the same, both were lower than the room temperature air thawing group. The …

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Effects Of Different Drying Methods On Drying Characteristics,Quality And Antioxidant Capacity Of Boletus Edulis, Zheng Qiaoran, Zhou Feng, Xing Jie, Tao Wen, Chen Luhong, Li Wenfeng, Gao Xiaoxu, Tan Si Nov 2018

Effects Of Different Drying Methods On Drying Characteristics,Quality And Antioxidant Capacity Of Boletus Edulis, Zheng Qiaoran, Zhou Feng, Xing Jie, Tao Wen, Chen Luhong, Li Wenfeng, Gao Xiaoxu, Tan Si

Food and Machinery

Effects of six drying methods were evaluated, including vacuum freeze, hot air drying, microwave pretreatment and ultrasonic pretreatment drying on six indexes of drying dynamics characteristics, color, polyphenol content, total flavonoid content, polysaccharides content and antioxidant activity of Boletus edulis. The results showed that the smallest color changes were detected in materials treated under vacuum freeze drying, while the most significant color change was observed under microwave pretreatment drying. Boletus edulis treated under vacuum freeze drying showed significantly higher amount in total flavonoids, polyphenol, polysaccharides contents and stronger antioxidant activity than the other samples. Taking the cost into account, 60 …

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Detection Of Moldy Maize Aflatoxin B1 And Gibberellinby Hyperspectral Coupled With Neural Network, Wang Guanghui, Yin Yong Nov 2018

Detection Of Moldy Maize Aflatoxin B1 And Gibberellinby Hyperspectral Coupled With Neural Network, Wang Guanghui, Yin Yong

Food and Machinery

In order to eliminate the influence of scattering, the original spectrum was processed by multiplicative scatter correction (MSC). The effective band was selected according to the correlation coefficient method, and 8 characteristic wavelengths were selected by continuous projection algorithm combined with information entropy. Finally, the effective bands and different features were used to establish prediction model for mildew maize aflatoxin B1 and gibberellin content at wavelength by BP neural network. The results showed that the prediction model established by spectral information at 8 kinds of characteristic wavelengths was the best, with the correct prediction rate of aflatoxin B1 …

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Rapid Prediction Of Ricewater Content And Activity Based On Low Fieldnuclear Magnetic Resonance Technique, Ji Linlin, Xia Alin Nov 2018

Rapid Prediction Of Ricewater Content And Activity Based On Low Fieldnuclear Magnetic Resonance Technique, Ji Linlin, Xia Alin

Food and Machinery

The water content and activity of rice samples were determined by direct drying method and water activity meter, respectively. The measured values are considered as reference values. Furthermore, rice samples were measured by LF-NMR, and the transverse relaxation data of the samples were generated. A multivariate calibration model was created by using chemometrics algorithm to rapidly determine the water content and activity of rice. PLS and BP-ANN methods were used to train 160 calibration set samples and establish the multivariate calibration models, respectively. 90 prediction set samples were predicted by the calibration models. The results show the correlation coefficients between …

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Isolation And Identification Of Symbiotic Fungi From Marine Sponge Reniera Japonica And The Antimicrobial Evaluation Of Its Crude Extract, Chai Jiale, Bai Xuelian, Zheng Shuangzhi, Lu Tiantian, Li Xiaohan, Chen Yiyi, Wu Dandan Nov 2018

Isolation And Identification Of Symbiotic Fungi From Marine Sponge Reniera Japonica And The Antimicrobial Evaluation Of Its Crude Extract, Chai Jiale, Bai Xuelian, Zheng Shuangzhi, Lu Tiantian, Li Xiaohan, Chen Yiyi, Wu Dandan

Food and Machinery

Thirty-three fungal strains were isolated from the healthy tissue of marine sponge by three different media. They were identified by morphology characteristics analysis and rDNA ITS sequence analysis．The species of each strain was determined, and the dominant fungi of Aspergillus and Penicillium were found. Among them, M3 was Aspergillus versicolor. The antimicrobial activity of the metabolites of the symbiotic fungi of marine sponge was studied by 96-well plate method with the standard strain of Escherichia coli. The results showed that the secondary metabolites of seven strains of symbiotic fungi had certain antimicrobial activity. The inhibition rate of M3 on Escherichia …

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Application Of Gas Chromatography In The Determination Of Antioxidants Bha, Bht And Tbhq In Foods Abstract, Wang Ping, Guo Jinying, Ren Guoyan, Cui Guoting, Wu Ying Nov 2018

Application Of Gas Chromatography In The Determination Of Antioxidants Bha, Bht And Tbhq In Foods Abstract, Wang Ping, Guo Jinying, Ren Guoyan, Cui Guoting, Wu Ying

Food and Machinery

Oil samples were extracted with methanol, and BHA, BHT and TBHQ in food were detected by gas chromatography. Result: When the concentration of BHA, BHT and TBHQ was in the range of 0.01~0.20 mg/mL, all of the correlation coefficients of BHA, BHT and TBHQ had good linear relation with r>0.999, with the detection limits<0.5 μg/mL. The recovery rate of the method met the requirements of laboratory determination, and the standard deviation was between 1.07~3.10 and the relative standard deviation was less than 5%.

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Multi-Objective Structural Optimization Design For The Waist Mounting Bracket Of Md-1200yj Palletizing Robot, He Ying, Mei Jiangping, Sun Yude, Zang Jiawei Nov 2018

Multi-Objective Structural Optimization Design For The Waist Mounting Bracket Of Md-1200yj Palletizing Robot, He Ying, Mei Jiangping, Sun Yude, Zang Jiawei

Food and Machinery

Finite element model of waist mounting bracket of MD-1200YJ palletizing robot was established, and the accuracy of the finite element model was verified by modal analysis, the modal test, and static analysis. Taking dynamic factors into account, based on the quintic non-uniform, the rational B-splines motion law was carried out, and the analysis showed that this part had the potential of lightweight design. The mass, the maximal stress, and the maximal deformation were minimized as the optimization objectives were determined. The structure parameters as design variables, the first and second natural frequency no reducing and boundary conditions of design variables …

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Numerical Simulation Of Flow Mixing Characteristics In Microwavereactor With Combined Impeller, Zhang Yu, Jin Guangyuan, Cui Zhengwei, Song Chunfang, Chen Haiying Nov 2018

Numerical Simulation Of Flow Mixing Characteristics In Microwavereactor With Combined Impeller, Zhang Yu, Jin Guangyuan, Cui Zhengwei, Song Chunfang, Chen Haiying

Food and Machinery

In order to investigate mixing uniformity in microwave reactor, the microwave reactors with dual stirring structure were designed, combined by the upper and lower impellers A100(A1), the upper impeller A200 and lower impeller A100(A2), and the upper impeller A100 and lower impeller A200(A3). Based on Computational Fluid Dynamics (CFD) method, laminar model, component diffusion model and multi-reference frame method (MRF) were used to simulate flow mixing characteristics of the alcohol-oil mixture in these microwave reactors. The flow characteristics of the alcohol-oil mixture and mixing time characteristics at different feeding positions in these microwave reactors were obtained. The results showed that …

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Design And Modeling Of A Soft Pneumatic Actuator, Sun Yilin, Zhang Qiuju, Chen Xiaoyan Nov 2018

Design And Modeling Of A Soft Pneumatic Actuator, Sun Yilin, Zhang Qiuju, Chen Xiaoyan

Food and Machinery

A soft pneumatic actuator for soft robots was designed in this study. Based on the Yeoh model and the principle of virtual work, the nonlinear relationship between the drive pressure and bending deformation was deduced. The finite element model and prototype were used to verify its validity, and this results provided the basis for the parameterized design and optimization of the soft actuator.

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Position And Workspace Analysis Of A Novel Parallel Cooking Robot, Yang Shiming, Ma Qingguo, Guo Cuiming Nov 2018

Position And Workspace Analysis Of A Novel Parallel Cooking Robot, Yang Shiming, Ma Qingguo, Guo Cuiming

Food and Machinery

A cooking robot based on a new parallel mechanism is proposed. Firstly, analyzed the movement of the cookware during artificial cooking, and designed four basic actions of rotating the cookware, bumping the cookware, stir fry and tilting the cookware. Then according to the four basic actions, the 2RRPS/SPS parallel mechanism is designed as the working platform of the cooking robot. The analytic geometry method is used to obtain the forward and reverse solution expressions of the working platform, and the MATLAB software is used to analyze the example and exercise simulation to verify the effectiveness of the cooking robot.

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The Analysis And Design Of Automatic Feeder For Tableware Based On Triz, Shang Xin, Chen Ya, Xie Xinyi, Wu Yuanyuan, Zhang Chengbin Nov 2018

The Analysis And Design Of Automatic Feeder For Tableware Based On Triz, Shang Xin, Chen Ya, Xie Xinyi, Wu Yuanyuan, Zhang Chengbin

Food and Machinery

Aimed at problem that low efficiency, labor-intensive and harsh environments, and there is secondary pollution in tableware cleaning sterilization packaging, according to the characteristics of tableware, a automatic feeder was design by TRIZ to solve these problem. This automatic feeder included conveyor systems and sorting systems,while, the sorting system including holder, sub-feeding device, and the adjusting device, which can adjust the finishing device by adjusting the height limit component and the width limit of the dispensing device. The components could be used for tableware of different heights and calibers, and the transportation system could realize the conveying of tableware. Finally, …

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Establishment And Evaluation Of Shelf Life Prediction Model For Half-Smoothtongue Sole（Cynoglossus Semilaevis） At Different Storage Temperatures, Li Na, Xie Jing, Mei Jun Nov 2018

Establishment And Evaluation Of Shelf Life Prediction Model For Half-Smoothtongue Sole（Cynoglossus Semilaevis） At Different Storage Temperatures, Li Na, Xie Jing, Mei Jun

Food and Machinery

To monitor promptly changes of quality characteristics and predict shelf life of half-smooth tongue sole(HTS) fillets during cold store, HTS fillets were stored at 270, 273, 277, 283 K and sensory evaluation, physicochemical properties (electrical conductivity, dripping loss, cooking loss, TVB-N value and K value), and the total viable counts were measured regularly. Besides, the shelf-life model of every index varying with storage temperature and storage time was established by using first-order kinetic model combined with Arrhenius equation, which was further verified using quality changes of HTS fillets at 280 K. The results showed that the sensory evaluation values decreased …

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Effects Of Different Pretreatment Methods On The Qualityof Freeze-Dried Apple Slices, Wang Haiou, Fu Qingquan, Chen Shoujiang, Zhang Wei, Wang Rongrong Nov 2018

Effects Of Different Pretreatment Methods On The Qualityof Freeze-Dried Apple Slices, Wang Haiou, Fu Qingquan, Chen Shoujiang, Zhang Wei, Wang Rongrong

Food and Machinery

The effects of different pretreatment methods (including blanching, color protecting liquid and ultrasonic) on the quality of vacuum freeze-dried apple slices were analyzed. The results showed that the FD apple slice in the blanching pretreatment group presented obvious collapse and shrinkage in the cell wall morphology, and obtained the lowest content of vitamin C, the highest rehydration ratio 4.97 and the highest content of soluble solids after rehydration(P＜005). In the color protection pretreatment group, FD apple slices obtained firmer network skeleton with full and complete shape of the cell walls, the highest hardness value 7.17 N, the highest color difference …

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Study On Effect Of Propolis On The Preservation Of Fresh-Cut Apple, Liu Yikang, Yang Qin, Zheng Renwei, Xiao Hong, Wang Wanqiu, Zhang Zhen, Liu Shijian Nov 2018

Study On Effect Of Propolis On The Preservation Of Fresh-Cut Apple, Liu Yikang, Yang Qin, Zheng Renwei, Xiao Hong, Wang Wanqiu, Zhang Zhen, Liu Shijian

Food and Machinery

In order to study the effect of propolis compound coating agent on fresh-cut apple. The compound coating agent was prepared with 0.00%, 0.25%, 0.50% and 0.75% water-soluble propolis, 150% chitosan and 1.00% calcium chloride to coat the fresh-cut apple. The weight loss rate, browning degree, titrate acid contents, ascorbic acid content and hardness of fresh-cut apples in different periods were detected to investigate the effect of propolis to fresh-cut apple. The physical and chemical indexes of fresh-cut apple in different storage periods were compared and analyzed. The coating agent with 0.50% water-soluble propolis was added to the hardness and titratable …

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Effects Of Eight Species Of Lactobacillus Fermentation On Phenoliccompounds And Their Antioxidant Activity In Feng Dan Petals, Lu Dandan, He Jia, Song Wenhua, Yuan Jiangyue Nov 2018

Effects Of Eight Species Of Lactobacillus Fermentation On Phenoliccompounds And Their Antioxidant Activity In Feng Dan Petals, Lu Dandan, He Jia, Song Wenhua, Yuan Jiangyue

Food and Machinery

In order to select suitable lactic acid bacteria species for fermenting of Feng Dan petals, the differences of phenolic substances, color difference and antioxidant activity of Feng Dan petals were compared after fermentation by 8 kinds of lactic acid bacteria (Lactobacillus plantarum, Lactobacillus bulgaricus, Lactobacillus casei, Lactobacillus helveticus, Lactobacillus rhamnosus, Lactobacillus acidophilus, Lactobacillus paracasei and Streptococcus thermophiles).The results showed that the concentrations of total phenolics and flavonoids increased significantly after fermentation by L. plantarum, which increased by 4.95% and 12.51%, respectively (P<005). The color difference ΔE was significantly changed (P<0.01). The scavenging activity was the highest, the DPPH free radical scavenging rate increased by 11.14% (P<0.01), the ABTS free radical scavenging rate increased by 6.58% (P<0.05), and the reducing power increased by 16.19% (P<0.05).The rutin and quercetin increased by 3.16% and 0.81%, respectively (P<0.05) after fermentation by L. bulgaricus.

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Research Progress On The Influence Of Irradiation On Ginseng Active Components And Pharmacological Properties, Qi Shibo, Zhang Lu, Song Xinping, Gao Peng, Cui Chengbi Nov 2018

Research Progress On The Influence Of Irradiation On Ginseng Active Components And Pharmacological Properties, Qi Shibo, Zhang Lu, Song Xinping, Gao Peng, Cui Chengbi

Food and Machinery

The paper focuses on the changes of the ginseng’s function with radiation. Under the dose of 1～6 kGy of 60Co-γ ray, the preservation rate of fresh ginseng significantly increased by 20% to 30%, while up to 98% when combining with other method and meanwhile reduce consumption of energy, which surely has a great advantage over the general dry treatment. Besides preservation after 10 kGy irradiation ginsenoside Rb1 significantly reduced, 21 kGy irradiation resulting in the damage of C—O—H functional units of the pyran ring aldohexose and new chemical composition, 30 kGy irradiation will cause a partial conversion from ginsenoside …

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Optimization Of Extraction Technology Of Flavonoids In Litchi Peel By Microwave-Assisted Aqueous Two-Phase Method And Its Clearing Acticity To Dpph·, Wang Weili, Ming Li, Ruan Shangquan, Wang Jianhong Nov 2018

Optimization Of Extraction Technology Of Flavonoids In Litchi Peel By Microwave-Assisted Aqueous Two-Phase Method And Its Clearing Acticity To Dpph·, Wang Weili, Ming Li, Ruan Shangquan, Wang Jianhong

Food and Machinery

The influence of ethanol concentration, solid-liquid ratio, amount of ammonium sulfate, microwave power and microwave radiation time, on the yield of flavonoids, was investigated by microwave-assisted aqueous two-phase method. The experimental model, in which flavonoids were extracted, was established by Box-Behnken experimental design. The results showed that when the ethanol volume fraction was 60%, the solid-liquid ratio was 1∶40 (g/mL), the amount of the ammonium sulfate was 4 g, the microwave radiation time was 90 s, and the microwave power was 270 W, the yield of the flavonoid was 20.74%, which relative error was 0.97% for the model calculated value …

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Research Advances On Property, Extractionand Application Of Redpigment From Rose, Wang Huiying Nov 2018

Research Advances On Property, Extractionand Application Of Redpigment From Rose, Wang Huiying

Food and Machinery

This paper reviewed extraction method, physical and chemical property,biological activity andstructural components of rosered pigment. Theproblems and development prospects were discussed in the research.

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Polyphenols Composition And Biological Activity In The Edible Flowers, Cai Xiaoying, Gong Yinyin Nov 2018

Polyphenols Composition And Biological Activity In The Edible Flowers, Cai Xiaoying, Gong Yinyin

Food and Machinery

The polyphenolic compounds in common edible flowers are mainly flavonoids and phenolic compounds. These polyphenolic compounds have the activities of antioxidant, antitumor, regulation of the cardiovascular disease, prevention of fibrosis, inflammation and diabetes. It was summarized the related researches on polyphenols in edible flowers at domestic and abroad in the present review, and this would provide reference for the development, utilization and research of edible flowers.

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Optimization Of Enzymatic Transformation Of2-O-Α-D-Glucopyranosyl-L-Ascorbic Acid, Huang Liping, Hao Jianhua, Wang Wei, Sun Jingjing, Liu Junzhong Nov 2018

Optimization Of Enzymatic Transformation Of2-O-Α-D-Glucopyranosyl-L-Ascorbic Acid, Huang Liping, Hao Jianhua, Wang Wei, Sun Jingjing, Liu Junzhong

Food and Machinery

2-O-α-D-glucopyranosyl L-ascorbic acid(AA-2G) was transformed by marine microorganism cyclodextrin glucanotrans-ferase (CGTase) using L-ascorbic acid and β-cyclodextrin(β-CD) as substrate. The qualitative and quantitative analyses of AA-2G were undertaken by LC-MS and HPLC. On the basis of single factor experiment Plackett-Burman design was carried out to determine three main effective factors (pH, substrate concentration, enzyme concentration). Then Box-Behnken design using three factors and three levels was applied to optimize synthesis conditions of AA-2G. The results indicated that the optimum conditions were pH 9.07, enzyme concentration 90.78 U/g·β-CD, substrate concentration 56.81 g/L, the ratio of substrate 1∶1(volume ratio), reacting for 24 h, at …

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Effects Of Drying Process On The Antioxidant And Antibacterial Properties And Volatile Flavor Components Of Chuzhou Chrysanthemum, Zhan Ge, Sun Yanhui, Yan Jiahui, Wang Jintao, Sun Mengyuan, Long Men Nov 2018

Effects Of Drying Process On The Antioxidant And Antibacterial Properties And Volatile Flavor Components Of Chuzhou Chrysanthemum, Zhan Ge, Sun Yanhui, Yan Jiahui, Wang Jintao, Sun Mengyuan, Long Men

Food and Machinery

Influences of vacuum freeze drying, heat pump drying and hot air drying on the antioxidant and antibacterial properties, volatile flavor components and sensory properties of Chuzhou Chrysanthe-mum was studied using fresh Chuzhou Chrysanthemum as a raw material. The results indicated that Chuzhou Chrysanthemum with vacuum freeze drying (T1) exhibited the strongest scavenging activity of free radical, inhibition effect of lipid peroxidation and antibacterial activity against two foodborne pathogenic bacteria (Staphylococcus aureus and Escherichia coli), and has the best sensory qualities. The biological activities and sensory scores of each sample decreased in the order of T1 (vacuum freeze …

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Study On Improvement Of Tobacco Quality By Fermentationtechnology With Aroma Producing Yeast, Hu Zhizhong, Jiang Yu, Long Zhangde, Liu Hong, Zou Kexing, Su Zan, Sun Jiansheng, Li Jigang, Yang Longyan, Xu Chunping Nov 2018

Study On Improvement Of Tobacco Quality By Fermentationtechnology With Aroma Producing Yeast, Hu Zhizhong, Jiang Yu, Long Zhangde, Liu Hong, Zou Kexing, Su Zan, Sun Jiansheng, Li Jigang, Yang Longyan, Xu Chunping

Food and Machinery

Redryed tobacco in Xingyi, Guizhou was used as the material, and the effects of moisture, inoculum amount, fermentation temperature and time on the content of petroleum ether extracts were investigated by using solid fermentation of aroma producing yeast. Then, the fermentation conditions were optimized by using orthogonal test. The aroma and conventional chemical composition in tobacco under the optimal condition were determined. The results showed that ① the effective factors on the content of petroleum ether extracts were the order of inoculation amount ＞ fermentation temperature ＞ fermentation time ＞ tobacco moisture. The optimal fermentation process were tobacco moisture 30% …

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Enlightenment Of The Development Of Functional Food In Japan On The Development Of Chinese Medicinal Food Industry, Xia Xinbin, Liu Jinhong, Xie Mengzhou, Huang Huiyong, Li Ling Nov 2018

Enlightenment Of The Development Of Functional Food In Japan On The Development Of Chinese Medicinal Food Industry, Xia Xinbin, Liu Jinhong, Xie Mengzhou, Huang Huiyong, Li Ling

Food and Machinery

This paper summarizes the development course, development characteristics and management experience of functional food in Japan, puts forward the enlightenment to the development of Chinese medicinal food industry. It points out that the government departments in charge should clarify the management responsibility and strengthen the market supervision. Meanwhile, the enterprises need to enhance scientific and technological innovation, absorb the excellent Chinese medicine culture, so as to explore the product essence of the homologous products of medicine and food, and strive to develop new products.

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