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Articles 991 - 1020 of 4816
Full-Text Articles in Life Sciences
The Public Opinion Monitoring, Network Attention And Forecasting The Reference Values Of The Labeled Food Nutrition, Ze-Ying Huang
The Public Opinion Monitoring, Network Attention And Forecasting The Reference Values Of The Labeled Food Nutrition, Ze-Ying Huang
Food and Machinery
Using 1 531 comment data of Sina Weibo and 2 587 of Baidu index data from 2013 to 2020, based on word cloud analysis, text sentiment analysis, and ARIMA-SVM prediction model, based on word cloud analysis, text emotion analysis and ARIMA-SVM prediction model. It was found that residents most concerned about the nutrient reference value of energy, and the nutrient reference value of moon cakes, soy sauce, yuanxiao, milk and other products were more used, especially children's food. In general, the nutrient reference values obtained slightly higher praise, but there were also many controversies; nutrient reference values did not get …
Study Of The Impacts Of Mono-, Di-Glyceride/Phospholipid (Mdg/Pl) On The Bioaccessibility Of Lipophilic Nutrients In Infant Formula Emulsion, Jun-Jie Hu, Yan Li, Huan-Huan Cui
Study Of The Impacts Of Mono-, Di-Glyceride/Phospholipid (Mdg/Pl) On The Bioaccessibility Of Lipophilic Nutrients In Infant Formula Emulsion, Jun-Jie Hu, Yan Li, Huan-Huan Cui
Food and Machinery
In this study, the in vitro digestion model was used for investigating the impacts of the application of Mono-, Di-glyceride (MDG) and phospholipid (PL) in the infant formula model emulsions on the bioaccessibility of lipophilic nutrients (vitamin D, carotenoids) contained in the formula. The addition of MDG/PL were found to significantly facilitate the micellization of lipophilic nutrients contained in the infant formula-based emulsion system at the simulated small intestine stage and led the digestion behavior more similar to human breast milk. The higher micellization rate resulted in higher absorption efficiency and higher bioavailability of liphophilic nutrients in the infant formula. …
Effect Of Withering Time On Biochemical Components And Volatile Of Tea Leaves From Danxia 8, Xiao-Yan Qiao, Wei Chen, Cheng-Ying Ma, Dong Chen
Effect Of Withering Time On Biochemical Components And Volatile Of Tea Leaves From Danxia 8, Xiao-Yan Qiao, Wei Chen, Cheng-Ying Ma, Dong Chen
Food and Machinery
The comparative analysis was performed for the biochemical components, and volatile of tea leaves from Danxia 8 treated at different withering time. The regularity of biochemical characteristics and aroma profile were expected to find out by statistical methods. The results showed that tea polyphenols increased significantly from 0 h to 23 h, and then decreased significantly. The content of free amino acids increased significantly from 0 h to 16 h, while theanine decreased remarkably. The contents of free amino acids and theanine decreased significantly in the next time. At the whole withering process, caffeine content increased significantly, but theobromine decreased …
Research On The Application Of Three-Step Hybrid Variable Selection Strategy In Chicken Moisture Detection By Near Infrared, Kai Yuan, Zhi-Yong Zhang, Qian Xi, Ying-Rui Wu, Dong-Sheng Guo, Guo-Kang He
Research On The Application Of Three-Step Hybrid Variable Selection Strategy In Chicken Moisture Detection By Near Infrared, Kai Yuan, Zhi-Yong Zhang, Qian Xi, Ying-Rui Wu, Dong-Sheng Guo, Guo-Kang He
Food and Machinery
Based on the three-step hybrid strategy of effective variable selection (rough selection, fine selection and optimal selection) in multivariate calibration of spectra, a feature variable selection method combining interval partial least squares (iPLS), interval variable iterative space shrinkage approach (iVISSA) and iteratively retaining informative variables (IRIV) was proposed to select the feature wavelengths of the near-infrared spectra of fresh chicken breast,and established a chicken moisture detection model. The number of modeled wavelengths was reduced by 0.76% after iPLS-iVISSA-IRIV, but the accuracy were stability of the model are gradually improved. The modeling results using the selected 8 characteristic wavelengths were as …
Pitch Design And Simulation Analysis Of Variable Pitch Spiral Structure, Fei-Xiang Li, Xiang-Dong Zong, Yong-Xiang Li, Jun-Hui Fu
Pitch Design And Simulation Analysis Of Variable Pitch Spiral Structure, Fei-Xiang Li, Xiang-Dong Zong, Yong-Xiang Li, Jun-Hui Fu
Food and Machinery
A new design method of spiral structure with equal diameter and variable pitch is proposed to improve the spiral feeding accuracy of wheat flour. Solidworks software is used to establish a three-dimensional model and the wheat flour material is used for discrete element simulation to observe the feeding amount and feed opening of the spiral feed section. The stability of the flow rate is compared with the conventional equal-diameter variable pitch spiral structure. The tests shows that, compared with the existing equidistant spiral structure, the experimental design of the variable pitch spiral feed section is uniformly fed at the same …
Improvement Of Electrification Of Hand-Made Cigar Machine, Jun-Yao Li, Zi-Xiang Huang, Jian Wang, Qun-Ling Guo, Rong Jian, Tao Chen, You-Zhi Shi
Improvement Of Electrification Of Hand-Made Cigar Machine, Jun-Yao Li, Zi-Xiang Huang, Jian Wang, Qun-Ling Guo, Rong Jian, Tao Chen, You-Zhi Shi
Food and Machinery
This paper improves the traditional cigar machine and configures endogenous mechanical power instead of manual. The SA / TDR63M4 geared motor is selected through theoretical calculation to make the electric cigar machine run steadily. The improved electric cigar machine reduces the labor intensity of staff, the average daily output efficiency can increase by 20.13%, the standard deviation of cigar resistance decreases from 109.816 kPa to 73.542 kPa, and the standard deviation of circumference decreases from 0.613 mm to 0.370 mm, indicating that the electric cigar machine can improve the output efficiency of round-head flat-tailed hand-made cigars and ensure the consistency …
Research Progress On The Extraction Of Plant Polyphenols, Fu-Lin Tian, Wen-Jing Huang, Zhan Wang, Xian-Kui Qin, Wang-Yang Shen, Qiao-Yu Cai
Research Progress On The Extraction Of Plant Polyphenols, Fu-Lin Tian, Wen-Jing Huang, Zhan Wang, Xian-Kui Qin, Wang-Yang Shen, Qiao-Yu Cai
Food and Machinery
In this review, the non-mentioned extraction methods of plant polyphenol in the existing research are summarized, including subcritical extraction, low eutectic extraction, and pressurized extraction, etc. The principles, advantages and disadvantages of different extraction methods are deeply analyzed. Moreover, the development direction of plant polyphenol extraction is prospected.
Research On Application Of Modified Atmosphere In Fresh-Keeping Technology Of Fruits And Vegetables In Cold Chain Logistics, Wei He
Food and Machinery
This study summarizes the application research of the modified atmosphere preservation technology of fruits and vegetables in cold chain logistics domestic and abroad, and summarizes the basic principles of modified atmosphere preservation technology and its application status of fruits and vegetables in cold chain logistics domestic and abroad. The trend of the application of modified atmosphere preservation technology for fruits and vegetables in cold chain logistics will help the healthy development of Chinese fruit and vegetable industry.
Application Of Food In Functional Products From The Perspective Of Antioxidant Dietary Supplement, Yi Sa
Application Of Food In Functional Products From The Perspective Of Antioxidant Dietary Supplement, Yi Sa
Food and Machinery
Anti-oxidation is an effective process to inhibit the oxidation of free radicals. The human body produces anti-oxidation substances as well as free radicals. With the improvement of material life, people hope to satisfy their health needs by eating natural and healthy food. In this paper, through the analysis of the raw materials and the compatibility of the products, it is found that the food and the extract are widely used in the anti-oxidation functional food, and the anti-oxidation function of the raw materials and the anti-oxidation function of the dietary supplement have been developed, the general situation of the use …
Effect Of L-Cysteine Hydrochloride On The Contents Of Four Toxic Aldehydes And Fluorescent Ages In Biscuits, Ting Weng, Jie Zheng, Cai-Huan Huang, Shi-Yi Ou
Effect Of L-Cysteine Hydrochloride On The Contents Of Four Toxic Aldehydes And Fluorescent Ages In Biscuits, Ting Weng, Jie Zheng, Cai-Huan Huang, Shi-Yi Ou
Food and Machinery
In the current study, different levels of L-cysteine hydrochloride (0.3, 0.6, 1.0, 1.5 g/kg) were incorporated in dough for the preparation of biscuits to investigate the effect of L-cysteine on the appearance and the content of four toxic aldehydes and fluorescent advanced glycation end products(AGEs) in biscuits. The results showed that the addition of L-cysteine hydrochloride brightened the color of the biscuits, and cause a slight decrease in pH values. The incorporation of L-cysteine hydrochloride significantly decreased the content of 5-hydroxymethyl furfural(HMF), 3-deoxyglucosone(3-DG), glyoxal(GO), methylglyoxal(MGO) and fluorescent AGEs in biscuits in a dose-dependent manner. The addition of L-cysteine at the …
Preparation And Structural Characterization Of Zinc-Binding Antioxidant Peptides From Corbicula Fluminea Hydrolysate, Jing-Jing Liu, Yun-Tao Xu, Chen-Hui Zhu, Qian-Qian Huang, Yao-Ping Han, Xue-Feng Wang, Ran Zhang, Yang-Jun Dai
Preparation And Structural Characterization Of Zinc-Binding Antioxidant Peptides From Corbicula Fluminea Hydrolysate, Jing-Jing Liu, Yun-Tao Xu, Chen-Hui Zhu, Qian-Qian Huang, Yao-Ping Han, Xue-Feng Wang, Ran Zhang, Yang-Jun Dai
Food and Machinery
Using clam meat as protein source, the hydrolysate was obtained by enzymehydrolysis with neutral protease. Antioxidant peptides were then separated and purified from the enzymatich-ydrolysate of Corbicula flumineaby using glucose gel G-50. Zinc-binding antioxidant peptides were prepared according to optimal process. Qualitative analysis of chelate products was carried out byninhydrin method and sodium sulfide method. Ultraviolet spectra, Fourier infrared and fluorescent light spectra, X-radiation diffraction and scanning electron microscopy were applied to predict the structure of the chelate products. The results showed that the product powder is a kind of polypeptide zinc chelate. The carboxyl, amino and amide bonds of …
Design Of Quinoa Moisture Rapid Detector Based On Capacitance Method, Qian Xi, Zhi-Yong Zhang, Kai Yuan, Dong-Sheng Guo, Ying-Rui Wu
Design Of Quinoa Moisture Rapid Detector Based On Capacitance Method, Qian Xi, Zhi-Yong Zhang, Kai Yuan, Dong-Sheng Guo, Ying-Rui Wu
Food and Machinery
The effects of temperature (5~40 ℃), water content (10.14%~29.55%) and frequency (1~100 kHz) on quinoa capacitance were studied by LCR meter. Based on the multiple regression analysis method, and the optimal excitation frequency (21 kHz) and water content detection model for quinoa water content detection were determined. The minimum system board of MSP430F149 microcontroller, TFT touch-screen, AD5933 impedance measurement chip, self-made concentric circle capacitance sensor and DS18B20 digital temperature sensor were selected to complete the design of the quinoa moisture rapid detector. The accuracy test of the detector showed that the average relative error of quinoa water content test results …
Multi-Objective Lightweight Design For Big Arm Of Md-1200yj Palletizing Robot, Ying He, Han Gao, Chao Ma, Li Gu
Multi-Objective Lightweight Design For Big Arm Of Md-1200yj Palletizing Robot, Ying He, Han Gao, Chao Ma, Li Gu
Food and Machinery
Finite element model of big arm of MD-1200YJ palletizing robot was established,the accuracy of the finite element model was verified by modal test.By static analysis taking into account dynamic factors, constrained modal analysis, vibration response test and frequency response analysis to determine to use minimal mass, maximizing the first and second natural frequency, minimizing the maximal stress, minimizing the maximal deformation and as the optimization objectives. Taking structure parameters as design variables and boundary conditionsof design variables as the constraint conditions, the approximation models of objective functions and constraint functions were established by the Box-Behnken and the RSM. The optimal …
Design Of Weighing System For Micro Mixing Powdery Particles, Da-Pan Hou, Ju-Dong Liu
Design Of Weighing System For Micro Mixing Powdery Particles, Da-Pan Hou, Ju-Dong Liu
Food and Machinery
To improve the weighing accuracy and efficiency of mixed powder granules, the material characteristics of the mixed powder granules were studied. The material characteristics of mixed powdery particles are studied. According to the influence of the density, binding property and quantitative size of the mixed materials on the accuracy of quantitative feeding, a method of combined calculation after volumetric quantitative molding is proposed to solve the quantitative error. Studed The influence of the combination model on the combination quantitative error, and the influence of the single bucket quantitative error on the combination process in the combination process. The volume forming …
Expression, Strengthening And Development Of Color Association In Food Packaging Design, Li Xia
Expression, Strengthening And Development Of Color Association In Food Packaging Design, Li Xia
Food and Machinery
Food packaging with strong color association can not only transmit food information, but also let consumers understand the cultural connotation behind the product and attract consumers' attention. Taking the associativity of color as the starting point, analyzing the color elements in food packaging based on the relevant theories of color psychology, enhancing the color impact of modern food packaging design, and enhancing the visual experience of consumers, with creating more social value, optimize the color experience of consumers and provide color services for brand extension.
Optimization Of Extraction Process Of Lignans And Polyphenols By Ultrasonic Wave Assisted Extraction From Cinnamomum Camphora, Hai-Xu Zhou, Mei-Yu Xie, Han Gao, Bo Li, Tong-Chao Su, Zhong-Hai Li
Optimization Of Extraction Process Of Lignans And Polyphenols By Ultrasonic Wave Assisted Extraction From Cinnamomum Camphora, Hai-Xu Zhou, Mei-Yu Xie, Han Gao, Bo Li, Tong-Chao Su, Zhong-Hai Li
Food and Machinery
Response surface methodology (RSM) based on Box Behnken Design (BBD) was employed to optimize the extraction conditions including the liquid-to-solid ratio, ultrasonic time, ethanol concentration and extraction time. The optimized conditions were as follows: liquid-to-solid ratio 1∶22 (g/mL), ultrasonic time 3 min, ethanol concentration 80% and extraction time 78 min. Under these conditions, the experimental yield of lignans and polyphenol were 44.89 mg/g, 48.17 mg/g, respectively.
Establishment And Detection Of Moisture Prediction Model Of Key Processes Of Cigarette Cutting Process, Zi-Juan Li, Bo Liu, Yang Gao, Jiao-Jiao Chen
Establishment And Detection Of Moisture Prediction Model Of Key Processes Of Cigarette Cutting Process, Zi-Juan Li, Bo Liu, Yang Gao, Jiao-Jiao Chen
Food and Machinery
Taking the loosening and conditioning process, feeding moisture returning process, hot air moistening process and the whole silk making process as the research objects, the artificial neural network and multiple regression modeling method were used to investigate the influence of different modeling methods on the moisture prediction accuracy of each process. moreover, the predicted results were tested experimentally. The experimental results showed that the mean of the absolute value of the prediction error was 0.24% for the loose moisture returning process with multiple regression modeling method. The mean of the absolute value of the prediction error was 0.20% for feeding …
Detection Method Of Mutton Adulteration Based On Pso-Lssvm And Characteristic Wavelengths Extraction, Tian-Tian Cheng, Ke-Jian Wang, Xian-Zhong Han, Shi Li, Yuan Wang
Detection Method Of Mutton Adulteration Based On Pso-Lssvm And Characteristic Wavelengths Extraction, Tian-Tian Cheng, Ke-Jian Wang, Xian-Zhong Han, Shi Li, Yuan Wang
Food and Machinery
In order to solve the problem of fast detection of adulteration of mutton and pork, the spectral collection of adulterated mutton was carried out by using a multi-spectral instrument, and the reflectivity of samples at the band of 350~1 100 nm was obtained. For data preprocessing, Particle Swarm Optimization (PSO) was used to optimize the Least Squares Support Vector Machine (LSSVM), and a Least Squares Support Vector Machine (PSO-LSSVM) model based on Particle Swarm Optimization was established, compared with Partial Least Squares(PLS), Back Propagation Neural Network (BPNN) and LSSVM models. The result showed that PSO algorithm could effectively optimize LSSVM …
Geographical Origin Traceability Discrimination Of Chongming Rice Wine, Xing Liu, Qai-Cai Zhang, Chun-Xia Yao, Wei-Guo Song
Geographical Origin Traceability Discrimination Of Chongming Rice Wine, Xing Liu, Qai-Cai Zhang, Chun-Xia Yao, Wei-Guo Song
Food and Machinery
Shanghai Chongming rice wine was used as the main research subject in this study. The natural abundance of hydrogen and oxygen stable isotopes (δ2H and δ18O values), mineral elements and free amino acids content were analyzed. The discriminant models of Chongming rice wines were established and the characteristic variables were screened by principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA). The results showed that the δ2H and δ18O values, mineral elements and free amino acids content in rice wines from different geographic origins were different, but only δ2 …
Design And Simulation Of Coffee Capsule Aluminum Foil Welding Equipment, Jing-Feng Ding, Xiao-Zuo Xu, Jiang Xu
Design And Simulation Of Coffee Capsule Aluminum Foil Welding Equipment, Jing-Feng Ding, Xiao-Zuo Xu, Jiang Xu
Food and Machinery
In order to improve the welding quality of the aluminum foil at the bottom of the coffee capsule, a coffee capsule aluminum foil welding device based on a grooved cam drive was designed. The key transmission system of coffee capsule aluminum foil welding equipment was designed in detail, including the transmission system structure design, the calculation of groove cam motion curve, the derivation of convex contour curve, etc. In ADAMS, the key transmission system model in aluminum foil welding equipment was established, and a simulation environment was built to perform kinematic analysis on the designed transmission system. Rigid-flexible coupling analysis …
Rapid Screening Of 57 Illegally Added Drugs For Uric Acid Lowering Medicinal And Edible Food By Modified Quechers Technology, Qi Yan, Xu Qing-Peng, Li Cong, Deng Xing-Fei, Li Jin-Qing
Rapid Screening Of 57 Illegally Added Drugs For Uric Acid Lowering Medicinal And Edible Food By Modified Quechers Technology, Qi Yan, Xu Qing-Peng, Li Cong, Deng Xing-Fei, Li Jin-Qing
Food and Machinery
Objective: This study aimed to establish a rapid screening method for 57 drugs illegally added to medicinal and edible food. Methods: Extracted samples were purified by QuEhERS pretreatment technology, and 57 kinds of illegal addition of drugs were separated by Waters BEH C18 column. Acetonitrile-water was used as a mobile phase for gradient elution. Mass spectrometry electrospray and multiple reaction monitoring (MRM) were used for detection and analysis. Results: The established method had good linearity, and the correlation coefficients (R2) of 57 kinds of illegal addition of drugs were all greater than 0.99. The limits of detection …
Determination Of Eight Kinds Of Insecticides In Dairy Products By Dispersed Solid Phase Extraction-Ultra Performance Liquid Chromatography-Tandem Mass Spectrometry, Yan Wan-Ying, He Min-Heng, Wen Heng, Liu Zhi-Peng, Yu Zhi-Cong
Determination Of Eight Kinds Of Insecticides In Dairy Products By Dispersed Solid Phase Extraction-Ultra Performance Liquid Chromatography-Tandem Mass Spectrometry, Yan Wan-Ying, He Min-Heng, Wen Heng, Liu Zhi-Peng, Yu Zhi-Cong
Food and Machinery
Objective: To detect eight kinds of insecticides in dairy products (pure milk, fermented milk, milk powder) rapidly. Methods: A high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) method based on dispersive solid phase extraction pre-treatment technology was established. The samples were extracted with acetonitrile-acetone solution (Vacetonitrile∶Vacetone=80∶20) in ultrasonic way, and the extraction solution was purified by Florisil, primary secondary amine and anhydrous MgSO4.After purification, the samples were analyzed by HPLC-MS/MS qualitatively and quantitatively in multi reaction monitoring (MRM) mode. Results: The correlation coefficient (r) of fenamiphos, imidacloprid, spinosad, dinotefuran, emamectin benzoate, methomyl, …
Preparation Of Matrix Reference Material Of Amino- Mebendazole In Eel Muscle Powder, Luo Chun-Lian
Preparation Of Matrix Reference Material Of Amino- Mebendazole In Eel Muscle Powder, Luo Chun-Lian
Food and Machinery
Objective: A method for the preparation and determination of amino-mebendazole matrix reference material in eel muscle powder was established. Methods: A positive sample was obtained by culturing eels with mebendazole and was prepared into amino-mebendazole matrix reference material, which went through freeze-drying, vacuum packaging, and radiation sterilization in turn. And its homogeneity, stability, cooperative setting value, and uncertainty were examined. Results: This matrix reference material has good uniformity and can adapt to low temperatures, normal temperatures, long-distance transportation, and other environments. It can be stored for more than 12 months under -18 ℃. The characteristic value of …
Identification Of The Age Of Baijiu Based On Two-Dimensional Correlation Near Infrared Spectroscopy, Zhou Tao, Zhang Zhi-Yong, Han Ning, Gao Wei, Jia Li-Yan
Identification Of The Age Of Baijiu Based On Two-Dimensional Correlation Near Infrared Spectroscopy, Zhou Tao, Zhang Zhi-Yong, Han Ning, Gao Wei, Jia Li-Yan
Food and Machinery
Objective: To avoid young liquor as old liquor and realize the discrimination of Baijiu age. Methods: The near infrared transmission spectra of Baijiu samples were collected by near infrared spectrometer, and the synchronous and asynchronous two-dimensional correlation spectra of Baijiu samples were constructed with the wine age as the external disturbance. On this basis, the autocorrelation spectrum of each sample was extracted, and the age discrimination model of Baijiu was established by combining Markov distance method. Results: The wave band from 1400 nm to 1800 nm contained the effective information about the changes of Baijiu samples on …
Research On The Innovation Mechanism Of Online Food Safety Supervision From The Perspective Of Holistic Governance, Li Xi
Food and Machinery
Holistic governance theory is a new type of public management strategy, which helps to provide citizens with a seamless and non-separated holistic service governance scheme, and provides new ideas for food safety supervision. Based on the theory of holistic governance, this article proposes three levels of online food safety supervision, from the perspective of the integrity of supervision implementation to reconstruct the execution network, the integrity of the supervision body to reconfigure of the participating network, the integrity of the supervision accountability to reshape of the power and responsibility system.
Intelligent Control Method Of End Effector Of Food Sorting Robot Based On Improved Inversion Control, Wei Shu-Cheng, Mo Guo-Zhi
Intelligent Control Method Of End Effector Of Food Sorting Robot Based On Improved Inversion Control, Wei Shu-Cheng, Mo Guo-Zhi
Food and Machinery
Objective: Solve the problems of poor positioning accuracy and low efficiency of end effectors in the sorting process of parallel food sorting robots. Methods: An intelligent control of the end-effector of a parallel food sorting robot combining fuzzy system, fuzzy neural network and inverse control algorithm was proposed. The modeling information was approximated by the fuzzy system, the unmodeled information was approximated and predicted by the fuzzy neural network, and the inversion control completed the control output. Finally, the experimental verification is carried out. Results: Compared with the traditional control method, the proposed control method had good …
Food Packaging Design Based On Network Public Welfare Communication, Huang Qiu-Chen
Food Packaging Design Based On Network Public Welfare Communication, Huang Qiu-Chen
Food and Machinery
On the basis of analyzing the development of the concept of public welfare packaging, taking the commercial practices of public welfare packaging as examples, the advantages, current situation and problems of food packaging participating in public welfare were analyzed. The design idea of food packaging based on network public welfare communication was put forward. Food public welfare packaging should follow the design principles of commonweal, simplicity, interactivity and communication, and promote the continuous innovation by integrating new media, new materials, new technologies and new contexts, in order to improve public welfare packaging to better serve the enterprise's public welfare communication, …
Research On The Identification Of Mildew Maize Kernels Using Spectral Variables And Color Features Of Hyperspectral Images, Li Wei, Zhao Xue-Qing, Liu Qiang
Research On The Identification Of Mildew Maize Kernels Using Spectral Variables And Color Features Of Hyperspectral Images, Li Wei, Zhao Xue-Qing, Liu Qiang
Food and Machinery
Objective: To identify mildew maize kernels accurately. Methods: A novel method to identify mildew maize kernels using spectral variables and color characteristics of hyperspectral images. Firstly, image segmentation, spectral variables and color features extraction were carried out on maize kernel images. Then, color features of maize kernel images were utilized to generate color histograms. Additionally, spectral variables and color histogram features were combined into a feature set. Finally, the distance functions were used to analyze the features in this feature set to identify mildew maize kernels. Results: For the proposed method, the maximum average identification deviation and …
Optimization Of Preparation Of Conjugated Linoleic Acid By Alkali Isomerization Of Peanut Oil, Shen Qiu-Yun, Peng Qing-Jing
Optimization Of Preparation Of Conjugated Linoleic Acid By Alkali Isomerization Of Peanut Oil, Shen Qiu-Yun, Peng Qing-Jing
Food and Machinery
Objective: To obtain a promising production technique of conjugated linoleic acid (CLA). Methods: The alkali isomerization was used to prepare CLA from peanut oil. The relative content of linoleic acid in peanut oil was determined, and the effects of reaction time, reaction temperature, ratio of alcohol to oil and KOH dosage on the conversion of CLA were investigated. The preparation conditions were optimized by Box-Behnken test. Results: The peanut oil was rich in linoleic acid with a relative content of 27.85%. Therefore, peanut oil was a good raw material for the preparation of CLA. For the conversion …
Isolation, Purification And Identification Of Ace Inhibitory Peptide From Paramisgurnus Dabryanus Protein, Dong Jing-Qi, He Ze-He, Tian Gui-Fang, Shao Juan-Juan, Wu Xiao-He
Isolation, Purification And Identification Of Ace Inhibitory Peptide From Paramisgurnus Dabryanus Protein, Dong Jing-Qi, He Ze-He, Tian Gui-Fang, Shao Juan-Juan, Wu Xiao-He
Food and Machinery
Objective: This study aimed to develop ACE inhibitory peptide of Paramisgurnus dabryanus.Methods: Ultrafiltration, Sephadex G-15 and RP-HPLC were used to isolate and purify ACE inhibitory peptides from the proteolysis products of P.dabryanus,and their structures were analyzed by HPLC-MS/MS. The inhibitory mode of purified ACE inhibitory peptide was analyzed by inhibition kinetics. Results: The amino acid sequence of ACE inhibitory peptide was Glu-Gly-HIS, the relative molecular weight was 341.2 Da, the IC 50 value was (17.89±3.28)μg/mL, and the purification ratio was 27.47. Conclusion: The inhibitory peptide of P. dabryanus is a competitive ACE inhibitory peptide.