Enzymatic Preparation And Activity Study Of Rice Bran Protein-Derived Ace Inhibitory Peptides,
2022
Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong 510642 , China
Enzymatic Preparation And Activity Study Of Rice Bran Protein-Derived Ace Inhibitory Peptides, Zhang Ling-Yu, Miao Jian-Yin, Cao Yu, Dai Wei-Jie, Liu Guo, Li Zhen-Wei, Cao Yong
Food and Machinery
Objective:This study aimed to develop new rice bran products.Methods:The ACE inhibition rate was used as an indicator, and the rice bran protein was optimized by single factor and response surface experiments. The optimal enzyme hydrolysate peptides were separated by ultrafiltration, activity evaluation and amino acid composition analysis were performed.Results:The optimal process conditions were as follows: pH 7.2, mass substrate concentration 8.2 g/100 mL, enzymolysis at 46 ℃ for 3 h, and enzyme addition 0.3 g/100 g rice bran protein. Under the control of these conditions, the ACE inhibition rate of the enzymatic hydrolysate was (73.15±0.64)%, …
Study On The Protective Effect And Mechanism Of Seabuckthorn Polysaccharides On Insulin-Resistant Hepg2 Cells From Oxidative Stress,
2022
Department of Traditional Chinese Medicine, School of Medicine, Yanbian University, Yanji, Jilin 133000 , China
Study On The Protective Effect And Mechanism Of Seabuckthorn Polysaccharides On Insulin-Resistant Hepg2 Cells From Oxidative Stress, Wang Qiu-Dan, Zhao Kai-Di, Lin Chang-Qing
Food and Machinery
Objective:The protective effect and mechanism of seabuckthorn polysaccharides on insulin-resistant HepG2 cells against oxidative stress was investigated.Methods:The seabuckthorn polysaccharide was extracted by water extraction and alcohol precipitation method, and the polysaccharide content was determined by the phenol sulfuric acid method. The CCK-8 method was used to determine the effects of different concentrations of sea-buckthorn polysaccharides on the viability of HepG2 cells. HepG2 cells were induced with a medium containing 5×10-8 mol/L insulin for 24 hours to establish a HepG2 cell insulin resistance model. A kit was used to determine glucose consumption and relative glycogen content, and to …
Antioxidant Activity Of Exo-Polysaccharide From Rhodotorula Mucilaginosa Cm-1 And Its Protective Mechanism Against Drug-Induced Liver Injury,
2022
Gansu Institute of Light Industry Limited Liability Company, Lanzhou, Gansu 730000 , China
Antioxidant Activity Of Exo-Polysaccharide From Rhodotorula Mucilaginosa Cm-1 And Its Protective Mechanism Against Drug-Induced Liver Injury, Li Mei-Lin, Ma Wen-Jin, Wang Bo, Zhou Yan-Bing, Zhang Yong-Xian, Yu Chang-Qing, Peng Tao
Food and Machinery
Objective:To study the protective effects of exo-polysaccharide of Rhodotorula mucilaginosa on drug-induced liver injury in mice and analyze its potential molecular mechanism, so as to provide scientific basis for the application of exo-polysaccharide of Rhodotorula mucilaginosa in functional food and drugs.Methods:Based on the antioxidant activity of polysaccharides, the effects of exo-polysaccharide component RmEPS-11 from Rhodotorula mucilaginosa on liver toxicity induced by INH and RIF in mice were evaluated.Results:Compared with the mice treated with INH and RIF, the levels of ALT and AST in serum and the content of MDA in liver were significantly decreased, while …
Preparation Of Carboxymethylated Pumpkin Polysaccharide And Its Antioxidant And Hypoglycemic Activities,
2022
School of Life Science and Agricultural Engineering, Nanyang Normal University, Nanyang, Henan 473061 , China
Preparation Of Carboxymethylated Pumpkin Polysaccharide And Its Antioxidant And Hypoglycemic Activities, Li Xue-Hui, Luo Xin-Yu, Wang Ying
Food and Machinery
Objective:To study the preparation process of carboxymethylated pumpkin polysaccharide and evaluate its antioxidant and hypoglycemic activity in vitro.Methods:Monochloroacetic acid concentration, reaction temperature and reaction time were further optimized by single factor tests and response surface tests, and the antioxidant activity test and hypoglycemic test were also carried out.Results:The optimum preparation conditions of carboxymethylated pumpkin polysaccharide were as follows: the concentration of monochloroacetic acid of 1.9 mol/L, reaction temperature of 73 ℃, reaction time of 3 h. Under the preparation conditions, the substitution degree of carboxymethyl polysaccharide was 1.247. Studies on antioxidant activity have shown that, …
Study On Antioxidant Activity Of Extracts From Different Polar Solvents Of Extract Of Fermented Soya Beans,
2022
Changchun University of Chinese Medicine, Changchun, Jilin 130117 , China
Study On Antioxidant Activity Of Extracts From Different Polar Solvents Of Extract Of Fermented Soya Beans, Liu Jun-Ze, Hu Li-Ming, Wang Ren-Guang, Wang Shu-Min, Wang Huan
Food and Machinery
Objective:To explore the difference in composition and antioxidant activity of crude extracts of fermented soya beans with different solvent extracts.Methods:70% ethanol was used the extraction solvent, the fermented soya beans powder was extracted by ultrasonic method. After the solvent was evaporated, the crude extract was obtained. The crude extract was dispersed in water and extracted with petroleum ether, dichloromethane, ethyl acetate, and n-butanol in turn to obtain different solvent extracts. The colorimetry was used to determine the content of total flavonoids and total polysaccharides in crude extracts and different solvent extracts, HPLC was used to determine the …
Effect Of Malolactic Fermentation On Volatile Compounds Of Rosa Roxburghii Tratt Wine,
2022
Moutai Institute, Renhuai, Guizhou 564500 , China
Effect Of Malolactic Fermentation On Volatile Compounds Of Rosa Roxburghii Tratt Wine, Guo Zhi-Jun, Yang Lei, Luo Hong-Xia, Zhou Mo-Mei, Fang Yu-Lin
Food and Machinery
Objective:The study aimed to analyze the influence of malolactic fermentation on the aroma and deacidification of Rosa roxburghii Tratt wine.Methods:The organic acid content and volatile compounds were qualitatively and quantitatively detected by ion chromatography, HS-SPME/GC-MS and sensory evaluation.Results:The results showed that the malic acid content decreased by 85.83% during malolactic fermentation, with the lactic acid content increasing by 87.75%, 114 kinds of volatile compounds were detected during malolactic fermentation, including 48 kinds of esters (12 011.60 μg/L), 26 alcohols (1 409.50 μg/L), 13 acids (2 490.60 μg/L) and 10 alkane (749.70 μ …
Identification Of Cut Tobacco Components Based On Adaboost Ensemble Learning,
2022
Xuchang Cigarette Factory of Henan China Tobacco Industry Co., Ltd., Xuchang, Henan 461000 , China
Identification Of Cut Tobacco Components Based On Adaboost Ensemble Learning, Wang Xiao-Ming, Wei Jia-Xin, Ma Fei, Wang Yi-Bin, Xu Wen-Wu, Jin Ya-Wei, Li Qi
Food and Machinery
Objective:In order to improve the identification efficiency of cut tobacco.Methods:F-score feature selection method and AdaBoost ensemble learning method were used to recognize cut tobacco components. The texture, color and shape features of cut tobacco were extracted as the input of the model. The feature dimension is reduced by F-score feature selection method, and the support vector machine (SVM) was used as the base classifier, then AdaBoost ensemble learning method was used to get the classification model of cut tobacco.Results:This method could effectively distinguish different components of cut tobacco, and the recognition accuracy of each kind …
Optimization Of Agaricus Bisporus Bread Composite Improver And Its Effect On Bread Quality,
2022
College of Tea & Food Science and Technology, Hefei, Anhui 230036 , China ；Anhui Engineering Laboratory for Agro-products Processing, Hefei, Anhui 230036 , China
Optimization Of Agaricus Bisporus Bread Composite Improver And Its Effect On Bread Quality, Zhang Yu-Meng, Bao Yu-Ting, Sun Yue, Li Xue-Ling, Liang Jin
Food and Machinery
Objective:In order to improve the quality of Agaricus bisporus bread, the appropriate additives were studied.Methods:In this study, vital wheat gluten, sucrose fatty acid ester and cellulase were used as additives to improve A. bisporus-wheat bread quality, and the study was optimized by using Box-Behnken experimental design.Results:By adding 3.35% of vital wheat gluten, 0.15% of sucrose fatty acid ester and 0.16% of cellulase, the comprehensive score of A. bisporus-wheat bread under optimal conditions can be improved. In addition, scanning electron microscopy detection results showed that the optimal A. bisporus-wheat bread could form a uniform and continuous …
Effect Of Marinated Process On The Quality And Flavor Of Hunan Flavor Marinated Beef,
2022
College of Food Science and Chemical Engineering, Shaoyang University, Shaoyang, Hunan 422000 , China ；Key Laboratory of Bean Products Processing and Safety Control, Shaoyang, Hunan 422000 , China
Effect Of Marinated Process On The Quality And Flavor Of Hunan Flavor Marinated Beef, Yu Kun, Zhao Liang-Zhong, Yin Shi-Xian, Liu Bin-Bin, Shu Min
Food and Machinery
Objective:This study aimed to provide a theoretical support for enhancing the quality of Hunan flavor marinated beef and improve the marinated process.Methods:The laws of beef quality and flavor change during pulse marinated, vacuum marinated micro pressure marinated and traditional marinated were investigated.Results:The NaCl content and percentage loss from cooked increased gradually in each marinated process beef with increased marinated time. The chromatic difference L* value decreased gradually, and the chewiness, hardness, elasticity increased first and then decreased. The sensory evaluation found the highest score and the time required to reach the highest score of pulse …
Effects Of Purple Yam Powder On The Quality And Antioxidant Activity Of Steamed Bread,
2022
Fujian Province Key Laboratory for the Development of Bioactive Material from Marine Algae, Quanzhou, Fujian 362000 , China ；College of Oceanology and Food Science, Quanzhou Normal University, Quanzhou, Fujian 362000 , China
Effects Of Purple Yam Powder On The Quality And Antioxidant Activity Of Steamed Bread, Shi Yu-Ru, Zheng Zong-Ping, Guo Feng-Xian, Chen Yang, Li Jin-Gui
Food and Machinery
Objective:The powder of purple yam was used as raw materials to replace part of wheat flour and then was applied to the production of steamed bread. The effects of purple yam flour on the quality and antioxidant activity of steamed bread were studied.Methods:The effect of different amount of purple yam powder on the texture and quality of steamed bread were investigated by measuring the specific volume, diameter-to-height ratio, color difference, texture, aging degree, moisture content, nutrient content and sensory evaluation. Moreover, the antioxidant capacity of steamed bread with purple yam powder was studied by measuring DPPH radical …
Research On The Formula Optimization And Quality Characteristic Of Nutritional Noodles,
2022
College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, Hubei 430000 , China
Research On The Formula Optimization And Quality Characteristic Of Nutritional Noodles, He Yun-Ran, Shen Wang-Yang, Wang Zhan, Jin Wei-Ping, Jia Xi-Wu
Food and Machinery
Objective:This study aimed to investigate the effects of extruded mung bean powder, mushroom powder and egg powder on the quality characteristics of noodles and develop a nutritious vermicelli enriched with dietary fiber, polysaccharide and protein.Methods:The texture characteristics and sensory evaluation of extruded mung bean powder, mushroom powder and egg powder vermicelli were determined. Combined with the results of single factor, the optimal formula of vermicelli was optimized by orthogonal test.Results:The optimized formula parameters of nutritional vermicelli were as follows: extruded mung bean powder 4.00%, mushroom powder 1.20%, egg powder 2.00%; Under the control of these …
Effect Of Solvent On Solubility And Anti Coalescence Stability Of Cbd Broad Spectrum Oil,
2022
Harbin University of Commerce, Harbin, Heilongjiang 150028 , China
Effect Of Solvent On Solubility And Anti Coalescence Stability Of Cbd Broad Spectrum Oil, Ma Yong-Qiang, Tang Ke-Xin, Wang Xin, Luo Yu, Peng Yu
Food and Machinery
Objective:This study contributed to overcoming the disadvantages of hydrophobicity of CBD broad-spectrum oil and poor stability caused by oil coalescence.Methods: CBD broad-spectrum oil was dissolved in five kinds of solvents, and two kinds of solvents with better solubility were obtained by the appearance of the solution. The solubility of broad-spectrum oil in two solvents was determined by UV spectrophotometry at 313~363 K, and the solvent with the highest solubility was obtained. In this solvent, the solubility of CBD broad-spectrum oil was determined at 313~353 K to correlate the Apelblat model. The number of oil drops of CBD …
Study On Pyrolysis Transfer Rules Of Seven Aglycones In Flue Gas Under Two Kinds Of Flavoring Methods,
2022
Technology Center, China Tobacco Henan Industrial Co., Ltd., Zhengzhou, Henan 450000 , China
Study On Pyrolysis Transfer Rules Of Seven Aglycones In Flue Gas Under Two Kinds Of Flavoring Methods, Han Lu, Chu Wen-Juan, Hu Shao-Dong, Zhao Zhi-Wei, Yang Jing, Tian Hai-Ying
Food and Machinery
bjective:The pyrolysis transfer rate of aglycones from 7 kinds of glucosides added to cigarette paper in mainstream and sidestream smoke was studied.Methods:5methylfurfuryl alcohol glucoside, menthol glucoside, anisyl alcohol glucoside, leaf alcohol glucoside, phenylethanol glucoside, ethyl vanillin glucoside and vanillin glucoside were applied to the surface of cigarette paper and inject into cigarette according to the 0.01% of the weight of cut tobacco respectively. The transfer rates of aglycones in mainstream smoke and side stream smoke were determined under two kinds of flavoring Methods. On this basis, the transfer rules of seven aglycones in mainstream smoke and sidestream …
Comparative Analysis Of Nutrients In Fruiting Bodies Between Wild And Cultivated Morchella In Different Cultivation Models,
2022
College of Life Science, Yan′an University, Yan′an, Shaanxi 716000 , China
Comparative Analysis Of Nutrients In Fruiting Bodies Between Wild And Cultivated Morchella In Different Cultivation Models, Zhao Rui-Hua, He Xiao-Long, Gao Xiao-Peng, Wang Fei
Food and Machinery
Objective:This study aimed to estimate the nutritive value of wild and cultivated Morchella in Northern Shaanxi.Methods:Morchella fruiting bodies wildly growing in Northern Shaanxi and cultivated in three models (greenhouse, plastic shed and understory) were used to analyze the difference in the main nutrition components.Results:In terms of crude protein, crude fat, crude fiber and water content, all cultivated Morchella were slightly higher than those in the wild. Moreover, the amino acid content of cultivated Morchella was also higher and the amino acid ratio of understory was the most reasonable. Both the wild and the cultivated were …
Determination And Correlation Analysis Of Tobacco Non-Volatile Organic Acids And Ph,
2022
Jilin Tobacco Industrial Co., Ltd., Yanji, Jilin 133001 , China
Determination And Correlation Analysis Of Tobacco Non-Volatile Organic Acids And Ph, Piao Yong-Ge, Zhang Jia-Bao, Cui Cheng-Zhe, Liu You-Jie, Li He-Lin, Li Rui-Li, Zhang Jun-Song
Food and Machinery
Objective:To explore the effects of organic acids on tobacco pH and flue gas pH.Methods:34 kinds of single-grade tobacco and 11 kinds of finished cigarettes were taken as the research objects, and their non-volatile organic acids, tobacco pH, and the pH of mainstream smoke total particulate matter were measured respectively. Grey correlation analysis and principal component analysis were used to analyze the correlation between organic acids and pH.Results:The results of grey correlation analysis show that oxalic acid, palmitic acid, malic acid and oleic acid have a relatively large influence on the pH of single-grade tobacco; Palmitic …
Rapid Determination Of Drug Residues Of Four Kinds Of Tetracyclines Using Des-Uplc-Ms/Ms In Aquatic Products,
2022
Zhongshan Institute for Food and Drug Control, Zhongshan, Guangdong 528437 , China
Rapid Determination Of Drug Residues Of Four Kinds Of Tetracyclines Using Des-Uplc-Ms/Ms In Aquatic Products, Liu Zi-Xiong, Xie Guo-Dan, Tan Gui-Liang, Zheng Hong-Tao, Dong Hai, Huang Jing-Hui
Food and Machinery
Objective:This study aimed to develop a method of rapid detection of tetracyclines including tetracycline, oxytetracycline, aureomycin and doxycyclin in aquatic products with deep eutectic solvents (DES) extraction and ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS).Methods:Different parameters of DES, such as the types of solvents, molar ratio of solvents, water content, and pH value were optimized.Results:The optimum deep eutectic solvent conditions for the medicament analysis of four tetracyclines in aquatic products were choline chloride-glycerol combination(molar ratio 1∶4) with 90% moisture content and 0.1% formic acid. Under the control of these condition, the four types of tetracyclines …
Rapid Determination Of 4 Anti-Diabetic Medicines In Health Foods By High Performance Liquid Chromatography-Tandem Mass Spectrometry,
2022
Dalian Center for Certification and Food and Drug Control, Dalian, Liaoning 116630 , China
Rapid Determination Of 4 Anti-Diabetic Medicines In Health Foods By High Performance Liquid Chromatography-Tandem Mass Spectrometry, Hai-Tao, Zhang Yu-Meng, Yong Yan-Hua, Li Peng, Wang Li-Na, Su Chun-Min
Food and Machinery
Objective:A high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) method was established for rapid determination of empagliflozin, linagliptin, saxagliptin and alogliptin in health foods.Methods:Target compounds in samples were ultrasonically extracted by methanol, separated by reverse liquid chromatography and detected by electrospray ionization (ESI) using multiple reaction monitoring (MRM) mode. The quantitation was carried out by external standard method of matrix calibration curve.Results:Good linear relationship displayed in the concentration range of 2~100 μg/L for saxagliptin and alogliptin, with the limits of quantitation (LOQs) of saxagliptin and alogliptin of 0.10 mg/kg. At three spiked concentration levels of …
Research On Rapid Prediction Model Of Rice Moisture Content Based On Near Infrared Spectroscopy,
2022
Institute of Biotechnology, Guizhou Academy of Agricultural Science, Guiyang, Guizhou 550006 , China
Research On Rapid Prediction Model Of Rice Moisture Content Based On Near Infrared Spectroscopy, Lu Du, Tang Jian-Bo, Jiang Tai-Ling, Chen Zhong-Ai, Pan Mu
Food and Machinery
Objective:In order to established a non-destructive, rapid and efficient method for detecting the moisture content of rice. Methods:This study, 161 rice samples were collected from 5 different regions were studied by near infrared spectroscopy combined with stoichiometry. By eliminating abnormal spectra and preprocessing the spectra, the prediction model of rice moisture content was established by partial least squares regression. Results:15 abnormal spectrum samples were eliminated using the method of principal component analysis combined with mahalanobis distance. The best spectral pretreatment was to eliminate the constant offset. The prediction model R2CAL established in the training set was 0.994 …
Optimization Of Extraction Conditions For Volatile Flavor Compounds In Crayfish Boiled Liquid Based On Hs-Spme-Gc-Ms,
2022
College of Life and Environmental Sciences, Hunan University of Arts and Science, Changde,Hunan 415000 , China ；Hunan Provincial Collaborative Innovation Center for Efficient and HealthProduction of Fisheries, Changde, Hunan 415000 , China ；Hunan Provincial Key Laboratory forHealth Aquaculture and Product Processing in Dongting Lake Area, Changde, Hunan 415000 , China ；Hunan Provincial Key Laboratory for Molecular Immunity Technology of Aquatic Animal Diseases,Changde, Hunan 415000 , China ；Changde Research Center for Agricultural Biomacromolecule,Changde, Hunan 415000 , China
Optimization Of Extraction Conditions For Volatile Flavor Compounds In Crayfish Boiled Liquid Based On Hs-Spme-Gc-Ms, Yang Qi-Fu, Xu Wen-Si, Hu Si-Si, Ma Jia-Chen, Huang Di, Liu Li-Ping, He Jiang, Yang Pin-Hong, Zhou Shun-Xiang
Food and Machinery
Objective:In order to increase the added value of crayfish by-products.Methods:With chromatographic peaks and peak areas as the inspection indicators, the optimization on equilibrium time, addition of sodium chloride, extraction time and extraction temperature were optimized, and the composition of volatile flavor compounds was analyzed.Results:The optimal extraction conditions were equilibrium time 0 min, extraction temperature 75 ℃, extraction time 50 min, addition of sodium chloride 30% with 50/30 μm DVB/CAR/PDMS solid phase microextraction head. Under these conditions, a total of 34 volatile flavor compounds, including 5 alcohols, 12 aldehydes, 5 alkanes, 5 aromatic, 5 heterocyclic …
Secondary Extrusion Walnut Shell Breaker,
2022
School of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xiʼan, Shaanxi 710021 , China
Secondary Extrusion Walnut Shell Breaker, Cheng Guo-Liang, Zheng Jia-Hong, Wang Chao
Food and Machinery
Objective:To solve the problem of low breaking rate and low kernel rate of walnut.Methods:According to the principle of walnut breaking shell, the material mechanism, breaking mechanism and transmission mechanism of walnut breaking shell were designed.Results:the breaking rate of walnut was 100% and the whole kernel rate was 77.58%.Conclusion:Walnut shell breaker designed by experiment is simple in structure, convenient in operation, economical and safe.
