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Articles 3091 - 3120 of 5782

Full-Text Articles in Food Processing

Research Progress Of Chitosan In Aquatic Products Preservation, Liu Jiali, Lan Weiqing, Liu Dayong, Zhang Xi, Xie Jing Mar 2019

Research Progress Of Chitosan In Aquatic Products Preservation, Liu Jiali, Lan Weiqing, Liu Dayong, Zhang Xi, Xie Jing

Food and Machinery

On the basis of the introduction of common preservation methods in aquatic products, the preparation methods and antibacterial mechanism of chitosan were reviewed respectively. The research progress of chitosan in the preservation of aquatic products was summarized, and the existing problems and solutions were analyzed. Moreover, the development prospect of chitosan in the preservation of aquatic products was also prospected.

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Simultaneous Uplc-Ms/Ms Analysis Of Lovastatin And Its Analogue For Functional Foods, Han Zhi, Gong Lei, Wang Huixia, Zhu Xiaoling, Wang Bin, Cao Qi, Wu Wanqin Mar 2019

Simultaneous Uplc-Ms/Ms Analysis Of Lovastatin And Its Analogue For Functional Foods, Han Zhi, Gong Lei, Wang Huixia, Zhu Xiaoling, Wang Bin, Cao Qi, Wu Wanqin

Food and Machinery

A ultra-high performance liquid chromatography-tandem mass spectrometric (UPLC-MS/MS) assay method has been developed and fully validated for the simultaneous quantification of lovastatin, simvastatin, mevastatin, lovastatin sodium hydroxide, dehydro lovastatin. The samples were extracted with methanol and separated on a Waters Acquity HSS T3 column. The mobile phase consisting of 0.1% aqueous formic acid solution and acetonitrile using gradient elution at a flow rate of 0.3 mL/min. The positive and negative ions were scanned simultaneously. The multiple reaction monitoring (MRM) mode was used for detection. The results showed that the five compounds were separated well within five minutes. The limits of …

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Effect Of The Degree Of Amylopectin Polymerization On Physicochemical Properties Of Jackfruit Seed Starch, Zhang Yutong, Zhang Yanjun, Zhu Kexue, Xu Fei, Li Shize, Wu Gang, Tan Lehe Mar 2019

Effect Of The Degree Of Amylopectin Polymerization On Physicochemical Properties Of Jackfruit Seed Starch, Zhang Yutong, Zhang Yanjun, Zhu Kexue, Xu Fei, Li Shize, Wu Gang, Tan Lehe

Food and Machinery

The amylose and amylopectin were separated by jackfruit seed starch (JFSS), and the same amylose (50%) was mixed with five different types of amylopectin to prepare JFSS (M1′, M5′, M6′, M11′, and BD′) with different degree of amylopectin polymerization. The effect of the degree of amylopectin polymerization on physicochemical properties of JFSS was investigated. M1′ had the lowest degree of amylopectin polymerization (189 506), while BD′ had the highest (431 481). As the degree of amylopectin polymerization increased, the syneresis, gelatinization enthalpy, peak viscosity, trough viscosity, breakdown, final viscosity, setback, relative crystallinity, and absorbance ratios of the five JFSS samples …

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Effect Of Wheat Flour Characteristics On The Quality Of Buckwheat Chinese Steamed Bread Premix, Zheng Yujiao, Guo Xiaona, Zhu Kexue Mar 2019

Effect Of Wheat Flour Characteristics On The Quality Of Buckwheat Chinese Steamed Bread Premix, Zheng Yujiao, Guo Xiaona, Zhu Kexue

Food and Machinery

The basic properties, dough rheological properties and fermentation characteristics of 8 different wheat flours were determined, and the buckwheat Chinese steamed bread（CSB）was prepared by using the buckwheat CSB premix prepared by the method. The specific volume, texture characteristics and sensory quality of the buckwheat CSB were determined. To explore the effect of wheat flour characteristics on the quality of buckwheat CSB premix. The results showed that wheat flour of the content of wet gluten was between 33% and 34%, the protein content was between 11% and 12% had less protein weakening, the dough formation time and stability time were longer, …

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Detection Of Hydroxyapatite In Milk Powder, Zhu Lixian, Lin Qinbao, Zhong Huaining, Wang Liang, Pan Jingjing Mar 2019

Detection Of Hydroxyapatite In Milk Powder, Zhu Lixian, Lin Qinbao, Zhong Huaining, Wang Liang, Pan Jingjing

Food and Machinery

The milk powder was dissolved in ultrapure water, and the inorganics-rich components in the milk powder were extracted after ultrasonication, centrifugation and vacuum freeze-drying, and the inorganics-rich components in the milk powder were qualitatively analyzed by X-ray powder diffraction (XRD) and Fourier transform infrared spectroscopy. In addition, different concentrations of needle-like nano-hydroxyapatite reference standard were added to the blank milk powder sample, and the same prelimina-ry treatment and analysis as the milk powder samples was carried out. The morphology and nano-size of the inorganics-rich components in sample 1 and spiked sample were characterized by scanning electron microscopy (SEM) and transmission …

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Change In The Quality Of Coix Seed During Storage, Luan Linlin, Lu Hongmei, Chen Li, Yang Fengyi, Wu Yuzhang, Mou Cancan Mar 2019

Change In The Quality Of Coix Seed During Storage, Luan Linlin, Lu Hongmei, Chen Li, Yang Fengyi, Wu Yuzhang, Mou Cancan

Food and Machinery

The aim of the study was to explore quality of coix seed grown in Xingren, Guizhou (China) during storage. The results indicated that, color, ordor, main contents and correlate indexs of coix seed changed significantly during storage, which reflect the quality of coix seed decreases. Results: the color of coix seed changed with storing time lengthening. Original milky white, glossy coix seed became dimmed with yellowish and grayish with storing period lengthens. The odor was also from the original sweet aroma, which was ultimate rancidity. The rancidity of coix seed bacame stronger with storing time lengthening. During storage period, there …

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Research On Apple Image Recognition Technology Based On Improved Lenet Convolution Neural Network In Natural Scene, Cheng Hongfang, Zhang Chunyou Mar 2019

Research On Apple Image Recognition Technology Based On Improved Lenet Convolution Neural Network In Natural Scene, Cheng Hongfang, Zhang Chunyou

Food and Machinery

In order to avoid the influence of illumination condition, overlap and other occlusion on image recognition, an improved LeNet convolution neural network is used to improve the structure of the traditional content-based recognition method. An Apple target recognition model based on the improved LeNet convolution neural network is designed and used to avoid the influence of illumination condition, overlap and other occlusion factors on image recognition. The model trains and validates Apple images in different scenarios. The results show that the network model can effectively recognize apple images. The recognition rates of independent fruits, occluded fruits, overlapping fruits and adjacent …

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Study On The Anti-Alcohol And Liver-Protection Efficacy Of Hydrolysate From Soft Tissue Of Corbicula Fluminea, Zhang Shuai, Zhang Chaohua, Gao Jialong, Qin Xiaoming, Zheng Huina, Hao Jiming, Zhan Gjing Mar 2019

Study On The Anti-Alcohol And Liver-Protection Efficacy Of Hydrolysate From Soft Tissue Of Corbicula Fluminea, Zhang Shuai, Zhang Chaohua, Gao Jialong, Qin Xiaoming, Zheng Huina, Hao Jiming, Zhan Gjing

Food and Machinery

The effect of hydrolysate from Corbicula fluminea soft tissue on the activation of alcohol dehydrogenase (ADH) in vitro was determined, and its effects of anti-alcohol and liver-protection on mice were also observed by measuring the drunk time, sober-up time, concentration of ethanol in serum, and the contents of malondialdehyde (MDA), triglyceride (TG) and glutathione (GSH) in liver tissue of mice. The results showed that hydrolysate from soft tissue of Corbicula fluminea could activate ADH in vitro with activation rate of 52%. It could also prolong the drunk time and shorten the sober-up time of drunken mice significantly, by 69.42% and …

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Research On Properties And Kinetic Model Of Intermittent Microwave Drying To Pitaya Slices, Pan Yuyan, Duan Zhenhua, Liu Yan, Tang Xiaoxian, Li Dingjin Mar 2019

Research On Properties And Kinetic Model Of Intermittent Microwave Drying To Pitaya Slices, Pan Yuyan, Duan Zhenhua, Liu Yan, Tang Xiaoxian, Li Dingjin

Food and Machinery

In order to understand the drying characteristics of pitaya slices under microwave intermittent conditions, the effects were studied, including the microwave power, heating time, intermittent time and slice thickness on the drying characteristics of pitaya slices under different microwave intermittent conditions. The results showed that the microwave intermittent drying process of pitaya slices included acceleration, constant speed and deceleration stages, and the mathematical model was established according to the experimental data. The kinetic model of microwave intermittent drying of pitaya slices conformed to page model, which was suitable for predicting and describing the microwave intermittent drying process of pitaya slices.

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Study On Extraction Of Capsaicin By Hot Dipping, Zhang Xiaoxu, Liu Hongqin, Zhou Xiqin, Yan Jiang, Xu Baocai Mar 2019

Study On Extraction Of Capsaicin By Hot Dipping, Zhang Xiaoxu, Liu Hongqin, Zhou Xiqin, Yan Jiang, Xu Baocai

Food and Machinery

Capsaicin with high purity has anti-inflammatory, bacteriostatic, analgesic and insecticidal effects, and is widely used in the pharmaceutical industry. Capsaicin was extracted from capsicum by hot dipping method, and the content of which was determined by high performance liquid chromatography. The extraction process was optimized by single factor test and orthogonal experiment. The results showed that the optimum extraction conditions were blanching temperature 60 ℃, extraction temperature 40 ℃, extraction time 3 h and chopping degree 0.5 cm (edge length). Under the condition the extraction rate of capsaicin could reach to 0.27%. Compared with the traditional ethanol reflux method, ultrasound-assisted …

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Formation And Regulation Of 1,2-Dicarbonyl Compounds And Ages In Steamed Cakes, Lu Yongling, Lu Min, Wang Xi, Lv Lishuang Feb 2019

Formation And Regulation Of 1,2-Dicarbonyl Compounds And Ages In Steamed Cakes, Lu Yongling, Lu Min, Wang Xi, Lv Lishuang

Food and Machinery

In view of the formation of harmful products of Maillard reaction in baked foods, different recipes of steamed cakes (sugar type, oil type, cake acidity regulator and the ratio between egg white and yolk) were selected to analyze the changes of glyoxal (GO), methylglyoxal (MGO) and advanced glycation end products (AGEs) in cakes, and the inhibitory effects of natural flavonoids (geneistein and luteolin) were investigated. The results showed that fructose (hexacarbohydrate) produced the highest MGO, xylose (pentose) produced the highest GO, GO and MGO contents were the lowest in cakes produced by xylitol; The influence of oil on the production …

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Stress Model And Fluid Solid Coupling Simulation Ofmicrocapsule In Simulated Intestine, Li Xiao, Yu Jinghu, Qian Shanhua, Cao Shu Feb 2019

Stress Model And Fluid Solid Coupling Simulation Ofmicrocapsule In Simulated Intestine, Li Xiao, Yu Jinghu, Qian Shanhua, Cao Shu

Food and Machinery

The theoretical of the stress of capsule was analyzed in viscous liquid environment. and studied the dynamic characteris-tics of magnetic drive capsules with different sizes of round and oval heads under fluid-solid coupling in intestinal environment. The effects on the capsule exercise stress were also studied from the gut dynamic viscosity, the capsule size and capsule shape by COMSOL. According to the principle of similar mechanical properties, using superelastic solid material, the intestinal fluid model and the intestinal wall model were designed by multiple factors and levels of numerical simulation experiments. Results: At the same level of dynamic viscosity and …

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Effects Of Pomegranate Peel Polyphenols On Cholesterol Efflux And Related Protein Expression, Zhao Shengjuan, Xiang Jinle, Chen Shuxing, Fei Peng, Xu Yunfeng, Li Jianke Feb 2019

Effects Of Pomegranate Peel Polyphenols On Cholesterol Efflux And Related Protein Expression, Zhao Shengjuan, Xiang Jinle, Chen Shuxing, Fei Peng, Xu Yunfeng, Li Jianke

Food and Machinery

In order to explore the effects of pomegranate peel polyphenols (PPPs) on SR-B1 protein expression and cholesterol efflux, in this study, Raw264.7 macrophages derived from foam cells were used as the model to illuminate the effects of PPPs on cholesterol efflux mediated by HDL. Western blot method was used to analyze the expression of scavenger receptor B1 (SR-B1), acyl-coenzyme A1: cholesterol acyltransferase (ACAT1) and cholesteryl ester hydrolase (nCEH). Further, the activity changes of ACAT1 and nCEH were revealed. The results showed that PPPs promoted the HDL-mediated cholesterol efflux and up-regulated the expression of SR-B1 significantly (P＜0.05). In addition, the PPPs …

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The Ultrahigh-Pressure/Thermally Induced Technologies Of The Β-Glucan Mixed Gel And The Evaluation System For Their Properties, Fan Rui Feb 2019

The Ultrahigh-Pressure/Thermally Induced Technologies Of The Β-Glucan Mixed Gel And The Evaluation System For Their Properties, Fan Rui

Food and Machinery

The apparent and functional properties of the mixed gel prepared with the thermal and ultrahigh-pressure were compared by rheological, texture, scanning electron microscopy and other analytical methods. The results showed that the β-glucan typical gels formed by ultra-high pressure and thermally induced at the total concentration of 7% and 8%, respectively, and the properties in water hold capacity, gel hardness, elasticity, chewiness and internality of β-glucan mixed gel formed by ultra-high pressure showed the more superior, in which the hardness of gel formed by ultrahigh pressure was significantly stronger than gel formed by thermal-induced gel (P＜0.05), while the oil hold …

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Study On Changes Of Gel Moisture Characteristic And Texture Properties Of Duck Eggs During Salting Period By Low-Field Nuclear Magnetic Resonance, Long Men, Zhang Wenhao, Zheng Suling, Qi Anqi, Zhan Ge Feb 2019

Study On Changes Of Gel Moisture Characteristic And Texture Properties Of Duck Eggs During Salting Period By Low-Field Nuclear Magnetic Resonance, Long Men, Zhang Wenhao, Zheng Suling, Qi Anqi, Zhan Ge

Food and Machinery

In order to explore the effects of salt ions on gel texture properties and moisture characteristic of duck eggs，low field nuclear magnetic resonance (Low-field NMR) was integrated to analyze the changes of the moisture status. Water relaxation time（T2）, proton density and relaxation area (A2) were explored by magnetic resonance spectroscopy (MRS), and water distribution was visualized by MRI. Meanwhile, the differences in traditional characteristic indices of gels such as texture properties (hardness, springiness, cohesiveness and chewiness) were also investigated. The results showed that the relative proportions of free water increased, and the relative proportions of immobilized …

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Comparison Of Fermentation Characteristics Between Clostridium Butyricum And Clostridium Tyroburicum, Wang Youling, Wei Zhujun, Liu Qing, Zhu Lilei, Xiao Haifang, Song Yuanda Feb 2019

Comparison Of Fermentation Characteristics Between Clostridium Butyricum And Clostridium Tyroburicum, Wang Youling, Wei Zhujun, Liu Qing, Zhu Lilei, Xiao Haifang, Song Yuanda

Food and Machinery

In this study, three strains of Clostridium butyrate were isolated from human feces, pit mud and animal intestinal contents. Which were named as Clostridium butyricum NK, SY and RX respectively. The fermentation characteristics of C. butyricum NK, SY and RX and C. tyroburicum ATCC25755 grown in synthetic medium were compared. The results showed that the growth ability of C. butyricum NK and SY were strong. C. tyroburicum had higher butyric acid, but lower lactic acid-production than C. butyricum. Compared among the three different strains of C. butyricum, C. butyricum NK had a stronger ability to produce butyric acid, with the …

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Effect Of Microwave Radiation On Acetic Acid And Ethyl Acetate In Luzhou-Flavor Liquor, Dai Jiahui, Liu Jianxue, Han Sihai, Li Xuan, Liu Jinke, Dong Xinluo, Li Peiyan, Xu Baocheng, Luo Denglin Feb 2019

Effect Of Microwave Radiation On Acetic Acid And Ethyl Acetate In Luzhou-Flavor Liquor, Dai Jiahui, Liu Jianxue, Han Sihai, Li Xuan, Liu Jinke, Dong Xinluo, Li Peiyan, Xu Baocheng, Luo Denglin

Food and Machinery

Microwave irradiation was used to treat three kinds of luzhou-flavor liquors with different ages and qualities at different temperatures, and the contents of acetic acid and ethyl acetate in the liquor were measured every 20 min. The results showed that microwave irradiation could accelerate the reduction of acetic acid content in liquor, while ethyl acetate content increase with the extension of irradiation time. When the microwave irradiation time was between 20 and 100 min, the increasing trend showed an S-shaped curve. Through the fitting study, the logistic regression model could be used to describe the change of ethyl acetate during …

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Preparation Of Gadolinium Metal Organic Framework And Its Application For Adsorption Of Phoxim, Tang Xiong, Chen Maolong, Xu Zhou, Cheng Yunhui Feb 2019

Preparation Of Gadolinium Metal Organic Framework And Its Application For Adsorption Of Phoxim, Tang Xiong, Chen Maolong, Xu Zhou, Cheng Yunhui

Food and Machinery

Metal-organic-frameworks is a new type of porous crystal material which is assembled by metal ions and organic ligands. Gd-MOF was prepared by GdCl3·6H2O and H3BTC, and its adsorption performance for phoxim pesticides was inves-tigated. The results showed that Gd-MOF could effectively adsorb phoxim pesticides from water, and the saturated adsorption amount of phoxim was 33.5 mg/g. When Gd-MOF was 40~80 mg, the adsorption rate of phoxim could reached 90%; and in all pH range 3~7, there was a certain adsorption force on the phoxim table. It is speculated that the adsorption of phoxim by …

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Flavor Components Of Fermented Coconut Milk Using Omics Technology Combined With Spme-Gc-Ms, Lei Wenping, Zhou Hui, Zhou Xingrong, Wu Kun, Wu Ni, Song Yanfei, Liu Chengguo Feb 2019

Flavor Components Of Fermented Coconut Milk Using Omics Technology Combined With Spme-Gc-Ms, Lei Wenping, Zhou Hui, Zhou Xingrong, Wu Kun, Wu Ni, Song Yanfei, Liu Chengguo

Food and Machinery

In order to analyze the correlation between characteristic flavor components and sensory flavor of fermented coconut milk. Solid-phase micro extraction (SPME) combined with gas chromatography-mass spectrometry (GC-MS) was employed to analyze the volatile flavor compounds of fermented coconut, natural coconut milk and yogurt, respectively. The sensory properties of flavor were assessed, and the characteristic flavor of the fermented coconut milk was analyzed from the sensory and flavor substances in combination with the omics technology. The results showed that the sensory flavor characteristics of fermented coconut milk were higher in sweet, sour, coconut, milky, creamy and alcoholic sensory scores; the sweetness …

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Technology And Mechanism Of Decolorization For Brown Granulated Sugar By Magnesium Sulfate-Zinc Polysilicate Method, Li Weixia, Li Lijun, Yang Lanfeng, Mao Xiang, Cheng Hao Feb 2019

Technology And Mechanism Of Decolorization For Brown Granulated Sugar By Magnesium Sulfate-Zinc Polysilicate Method, Li Weixia, Li Lijun, Yang Lanfeng, Mao Xiang, Cheng Hao

Food and Machinery

The effect and mechanism of decolorization were studied with magnesium sulfate and amphoteric 2% polysilicate zinc on the brown granulated syrup under high pH conditions. The factors and levels of response surface analysis were determined on the basis of single factor tests. The decolorization process was optimized by response surface analysis to obtain the optimum process conditions: magnesium sulfate of 500 mg/L, dosage of 2% silica polysilicic acid zinc of 1.57%, and pH 11. Under this condition, the decolorization rate reached 92.21%. The composites and sugar juice system were characterized by scanning electron microscopy (SEM) and potential analyzer. The results …

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Effect Of The Polarity Of Simulated Liquid On Migration Of Antioxidants In Polypropylene, Liu Yueyue, Zhang Qinfa, Jian Tiantian, Mo Yicheng Feb 2019

Effect Of The Polarity Of Simulated Liquid On Migration Of Antioxidants In Polypropylene, Liu Yueyue, Zhang Qinfa, Jian Tiantian, Mo Yicheng

Food and Machinery

The effects of the polarities of the simulated liquids were investigated on the migration of four antioxidants BHA, BHT, Irganox1076, and Irgafos168 migrated from polypropylene plastics to six different polar simulating solutions. Results, the solubility of antioxidant with polypropylene plastics was worse, the intermiscibility of antioxidant with simulated liquid was better, and the migration equilibrium distribution coefficient was higher. Beyond that, the closer the simulated liquid polarity was to polypropylene, the higher the migration diffusion coefficient was, and the smaller influence of molecular weight on the migration diffusion coefficient of antioxidants was. Conversely, the migration diffusion coefficient would be greatly …

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Rapid And Non-Destructive Identification Of Different Brands And Inferior Oatsby Near Infrared Spectroscopy Combined With Chemometrics Methods, Li Shangke, Du Guorong, Ding Shenghua, Shan Yang, Jiang Liwen, Liu Xia, Li Pao Feb 2019

Rapid And Non-Destructive Identification Of Different Brands And Inferior Oatsby Near Infrared Spectroscopy Combined With Chemometrics Methods, Li Shangke, Du Guorong, Ding Shenghua, Shan Yang, Jiang Liwen, Liu Xia, Li Pao

Food and Machinery

In order to identify the inferior oat samples, and the samples from different local and imported brands, a nondestructive identification method based on near infrared spectroscopy and chemometrics methods was proposed. Spectra of five different brands of oat samples and inferior samples were obtained. Continuous wavelet transform was used for the baseline elimination. Wavenumber selection based on the standard deviation and relative standard deviation was discussed for improving the accuracy of the method, and 15 informative wavenumbers were obtained. Principal component analysis method was used for classification. The results showed that the baseline elimination was achieved by continuous wavelet transform …

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Discrimination Of Big Or Small Particle Coix Seed Varieties Based On The Major Nutrient Content, Liu Xing, Fan Kai, Yang Junhua, Song Weiguo Feb 2019

Discrimination Of Big Or Small Particle Coix Seed Varieties Based On The Major Nutrient Content, Liu Xing, Fan Kai, Yang Junhua, Song Weiguo

Food and Machinery

Based on the crude fat, protein, amino acids and mineral element content of different areas big particle Coix seed (BCS) and small particle Coix seed (SCS), this paper analyzed whether there was a difference on the major nutrient content between BCS and SCS by using analysis of variance, and discriminated the BCS and SCS by using principal component analysis (PCA) and support vector machine (SVM). The results indicated that the nutrient contents measured in this text of SCS were higher than or not significant difference from those of BCS except the crude fat, Mg, and Al content. The characteristic variables …

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Detection Of Diethylstilbestrol Residues In Duck Meat Usingsurface-Enhanced Raman Spectroscopy, Tao Jinjiang, Pan Guigen, Liu Muhua, Yuan Haichao, Zhao Jinhui Feb 2019

Detection Of Diethylstilbestrol Residues In Duck Meat Usingsurface-Enhanced Raman Spectroscopy, Tao Jinjiang, Pan Guigen, Liu Muhua, Yuan Haichao, Zhao Jinhui

Food and Machinery

An approach based on surface-enhanced Raman spectroscopy (SERS) was developed to rapidly detect the diethylstilbestrol residues in duck meat in this study. Firstly, the single factor analysis method was adopted to determine the optimal amounts of sodium citrate, Au nanoparticles, duck meat extract containing diethylstilbestrol and magnesium sulfate solution, as well as the optimal measurement time. The quantitative analysis model for the detection of DES residues in duck meat was established after a simple pretreatment for duck meat was done. Thereafter, based on the basis of the above study, the linear equation with minimum detection concentration of 0.5 mg/L was …

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Isolation And Identification Of Escherichia Coli O26 From A Slaughter House, Fu Wenjing, Dong Chen, Yu Jinlong, Hu Jie, Jiang Yun Feb 2019

Isolation And Identification Of Escherichia Coli O26 From A Slaughter House, Fu Wenjing, Dong Chen, Yu Jinlong, Hu Jie, Jiang Yun

Food and Machinery

Escherichia coli O26 was isolated and identified form a slaughter plant in order to investigate its contamination of E. coli O26. According to USDA detection method, samples were enriched with immunomagnetic separation (IMS) after selective enrichment, and then isolated and purified with selective chromogenic mRainbow agar. Subsequently, the suspected colonies were screened and chose to test the O antigen by PCR and followed by the serum agglutination test. The virulence genes (stx1, stx2, eae and hly) of positive isolations were detected by multiplex PCR. The results showed that only one strain from 120 samples was identified as E. coli O26, …

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Nondestructive Determination Of Reconstituted Tobacco Paper Base Based By X Ray Method, Zhu Hongfu, Du Jinsong, Chang Jiheng, Fan Xinshun, Tian Xiaohui, Wang Jiashao, Lu Duanfeng Feb 2019

Nondestructive Determination Of Reconstituted Tobacco Paper Base Based By X Ray Method, Zhu Hongfu, Du Jinsong, Chang Jiheng, Fan Xinshun, Tian Xiaohui, Wang Jiashao, Lu Duanfeng

Food and Machinery

The reconstituted tobacco paper base with different ratios was determined by X-ray grammage instrument. The effect of tube voltage on repeatability，sensitivity and detection limit of the instrument was analyzed.The results show that tube voltage 6 000 V is more suitable for the determination about the grammage of the reconstituted tobacco paper base;and it is found that the grammage indication value has a high linear relationship with the grammage measured value about the reconstituted tobacco paper base with different ratios，and the established linear regression model with determination coefficient over 0.99，and the predicted maximum relative deviation less than 1%. The reconstituted tobacco …

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The Optimization Of Food Safety Regulation Model Based On Economic Analysis, Liang Liang Feb 2019

The Optimization Of Food Safety Regulation Model Based On Economic Analysis, Liang Liang

Food and Machinery

The discussion on food safety regulation has been limited to the protection of the rights and interests of the parties concerned and the legitimacy analysis of the food safety incidents itself. However, the mode of food safety supervision centered on legality has been difficult to bear the demands of modern administration, maintaining social order and promoting social welfare. Using cost benefit analysis, A-A 'and other economic analysis methods, reasonably set up the main body of food safety regulation, reasonably select the opportunity of food safety supervision, and rationally use the control tools of food safety, to promote the optimization of …

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Research On Dynamic Characteristics Of Globoidal Indexing Cam Mechanism, Liu Chao, He Xueming, Huang Hainan, Chen Xiaofei Feb 2019

Research On Dynamic Characteristics Of Globoidal Indexing Cam Mechanism, Liu Chao, He Xueming, Huang Hainan, Chen Xiaofei

Food and Machinery

Globoidal indexing cam mechanism is one of indexing mechanism with excellent performance.It has the advantages of high speed，large stiffness and strong bearing capacity. In this paper, based on the three-dimensional model of globoidal cam mechanism established by bi-cubic B-spline surface algorithm, a rigid-flexible coupling dynamic model is established with ADAMS software, and its kinematics analysis is carried out to verify the correctness of the model. Meanwhile，the mechanism is simulated and analyzed under different motion parameters, and the curves of angular acceleration and contact force under different parameters are obtained. The analysis of the curve of angular acceleration and contact force …

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Structure Design Of The Continuous Apricot Pit Removing Machine, Liu Kui, Yang Liling, Zhu Zhanjiang, Liu Jia, Zhu Zhaoshuai Feb 2019

Structure Design Of The Continuous Apricot Pit Removing Machine, Liu Kui, Yang Liling, Zhu Zhanjiang, Liu Jia, Zhu Zhaoshuai

Food and Machinery

Based on physics feature of apricots, a semi-automatic continuous apricot pit removing device was designed, with the principle of holding the apricot with soft plastic and stamping with the claw type stamping knife. By using the method of combining a cam intermittent divider and a slide block device, the apricot chain plate could be controlled with regulable stop-and-start. Moreover, the stamping knife could complete a process of stamping once, as soon as this chain plate intermittent pauses. The result showed that the apricot pit removing rate was above 96%, and the apricot meat bring together rate was less than 2.4%, …

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Online Inspection Of Part's Bearing Holes From Feature Recognition To Partial Stitching, Wang Yuyuan, Xu Jie, Ji Weixi, Peng Wei, Du Meng Feb 2019

Online Inspection Of Part's Bearing Holes From Feature Recognition To Partial Stitching, Wang Yuyuan, Xu Jie, Ji Weixi, Peng Wei, Du Meng

Food and Machinery

In the online detection process of the bearing hole of the trajectory control part of a beverage filling equipment without fixture positioning, an single picture isn't enough for the high-precision detection measuring. This paper proposes a 2 steps method: feature recognition from the overall visual and high resolution local image obtaining by image stitching. Firstly, the feature description matrix is constructed by the central position relationship of the global image bearing hole, and the overall feature hole recognition is performed by the support vector machine (SVM) method. Secondly, for the identified bearing holes, the KAZE method is used to splicing …

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