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Articles 4051 - 4080 of 4759
Full-Text Articles in Food Processing
Screening For Afb1-Contaminated Corn By Specific Gravity Method, Luo Xiaohu, Qi Lijun, Fang Wenmiao, Wang Ren, Wang Li, Shen Yuxian, Chen Zhengxing
Screening For Afb1-Contaminated Corn By Specific Gravity Method, Luo Xiaohu, Qi Lijun, Fang Wenmiao, Wang Ren, Wang Li, Shen Yuxian, Chen Zhengxing
Food and Machinery
Aimed at the severe contamination of AFB1 in corn, effect of specific gravity separation on AFB1-contaminated corn has been investigated. In this study, air volume, longitudinal gradient and amplitude have a significant influence on separation results. With air volume 6 000 m3/h, longitudinal gradient 7°, amplitude 15 mm, different levels of contaminated corn were separated with specific gravity. AFB1 concentrations in obtained heavy corn were decreased by 21.2% and 38.4% respectively compared with the materials. The ratio of light corn and broken percentage of corn was moderate. As the specific gravity equipment is very …
Effects Of Amylose Chain Length On Film Properties Ofwaxy Maize Starch, Meng Lingru, Ye Xiaojia, Wu Chunsen, Wang Ren, Xu Xueming, Jin Zhengyu, Zhou Xing
Effects Of Amylose Chain Length On Film Properties Ofwaxy Maize Starch, Meng Lingru, Ye Xiaojia, Wu Chunsen, Wang Ren, Xu Xueming, Jin Zhengyu, Zhou Xing
Food and Machinery
Three types of amylose with different chain length were prepared. And each of them was added to waxy maize starch in the proportion of 8%, 15%, 25%, respectively. The mixed gelatinized starch solution was cast on to a plastic plate and dried at 23 ℃ in relative humidity (RH) of 85% for 3 days. The short amylose, i.e. debranched waxy maize starch (DWMS), mixed well with waxy maize starchwithout phase separation. But phase separation was found in the medium chain, i.e maize amylose (MAM), and long chain amylose, ie potato amylose (PAM), added films. Adding amylose promote crystallization of waxy …
Effects On The Synthesis Of Starch Stearate By Regulating The Lipase Activity In Ionic Liquids, Su Anxiang, Dai Feiyun, Yu Mengfei, Tang Xiaozhi
Effects On The Synthesis Of Starch Stearate By Regulating The Lipase Activity In Ionic Liquids, Su Anxiang, Dai Feiyun, Yu Mengfei, Tang Xiaozhi
Food and Machinery
Effects of lipase activity regulation in ionic liquids on synthesis of starch stearate were investigated in the present study. The results showed that degree of substitution of starch stearate increased with increasing water activity and the amount of hydrated salts. When water activity reached 0.61, the amount of addition was 80%, the degree of substitution reached maximum value of 0.111. The catalytic capability of enzyme is sensitive to pH values, and the highest degree of substitution could be obtained when the lyophozyme in a buffer solution with pH 7.1,when proper additive quantity of lyophozyme was 10.4%. The lipase that lyophilized …
Dynamic Changes Of Volatile Components In Whey During Traditional Brewing Processing, Li Hongzhen, Yun Jianmin, Jia Yali, Zhao Fengqin, Zhao Xiaorui, Qi Qianya
Dynamic Changes Of Volatile Components In Whey During Traditional Brewing Processing, Li Hongzhen, Yun Jianmin, Jia Yali, Zhao Fengqin, Zhao Xiaorui, Qi Qianya
Food and Machinery
Volatile compounds in whey sample in different stages during traditional brewing processing were analyzed by headspace solid phase micro-extraction (HS—SPME) and gas chromatography-mass spectrum (GC—MS) technique. The results indicated that 59 kinds of volatile components were identified，including alcohols, olefins, aldehydes and ketones, esters, acids. Totally 24, 29, 34, 34 and 36 kinds of volatile components were identified in whey samples fermented for 0, 24th, 48th, 72th, and 96th hours, respectively. Among them, twelve volatile compounds were common to the five samples. With the fermentation, the amounts of volatile components were increased, and esters were newly detected. The relative contents of …
Experiment On Shearing Mechanical Properties Of Flaxseed, Ding Jinfeng, Zhao Fengmin, Cao Youfu, Zhang Xiaoyan, Li Shujun
Experiment On Shearing Mechanical Properties Of Flaxseed, Ding Jinfeng, Zhao Fengmin, Cao Youfu, Zhang Xiaoyan, Li Shujun
Food and Machinery
In order to get the shear mechanical properties of flaxseed, the Texture Analyzer was used to study the shear properties of flaxseed. First flaxseeds were dried, and then the effect of moisture content and loading rate on shear mechanical properties was studied. The results showed the curve of drying time and moisture content was established. The maximum shear force of flaxseed was between 10.43 N and 12.55 N, and the shear power was 2.277 mJ to 3.677 mJ. Under the same loading rate, shear force and shear power of flaxseed with different moisture content had a difference. The analysis of …
Detecting Chewiness Of Apple By Near Infrared Spectroscopy Technology Combined Artificial Neural Network, Zeng Xiangyuan, Zhao Wuqi, Qiao Yaoyao, Yin Yiran, Pei Yali, Huo Yaoyao, Guo Yurong
Detecting Chewiness Of Apple By Near Infrared Spectroscopy Technology Combined Artificial Neural Network, Zeng Xiangyuan, Zhao Wuqi, Qiao Yaoyao, Yin Yiran, Pei Yali, Huo Yaoyao, Guo Yurong
Food and Machinery
Near infrared spectroscopy data from 135 apple samples of different storage periods were determined, the charactar of them was extracted and analyzed using principal components analysis. Therefor an ANN model for detection of apple chewiness was established. Our results showed that the preprocessing of spectrum scattering was the weighted multiple scatter correction(WMSC) and mathematics processing was “2441”. The structure of the artificial neural network mode was 3—16—1, established after extracting 3 principle component as the characteristic variables of the original information. The decision coefficient of our model on validation is 0.992 4, and the root mean square error is 0.000 …
Study On Isolation And Preliminary Identification Of Endophytic Fungi In Trollius Chinensis, Lu Jun, Qin Peizhen, Shan Qiji, Li Zhonghai
Study On Isolation And Preliminary Identification Of Endophytic Fungi In Trollius Chinensis, Lu Jun, Qin Peizhen, Shan Qiji, Li Zhonghai
Food and Machinery
Fresh plants of T. chinensis collected from Inner Mongolia were used to isolated the endophytic fungi from their roots, stems and leaves after superficial disinfection. According to the morphological characteristics observation and microscopy examination, 6 endophytic fungi strains were isolated from the T. chinensis, including four strains from the leaves, one from the stems, and one from the roots. All the separated fungi strains were identified as penicillium genus (Pinicielium).
Identification Of Quercetin In Ethanol Extract Of Lotus Seed Pod And Its Biological Activity, Xie Sandu, Lin Yanan, Huang Xiaomei
Identification Of Quercetin In Ethanol Extract Of Lotus Seed Pod And Its Biological Activity, Xie Sandu, Lin Yanan, Huang Xiaomei
Food and Machinery
The quercetin in the 80% ethanol extract of lotus seed pod was identified with UV, TLC, IR and HPLC, and its biology activity was also studied. Results: That the alcohol extract of lotus seed pod contained quercetin; Taking the VC and tea polyphenol as positive control, the ·OH, O-2·, DPPH and ABTS+ scavenging activity of 92.02%, 98.54%, 93.12% and 91.32%, respectively, when the concentration of quercetin in the 80% ethanol extract of lotus seed pod reached 8.6583 mg/mL; The MIC of the ethanol extract of lotus seed pod to escherichia coli, yeast and Salmonella was …
Screening And Identification Of Strains For Tetramethyl Pyrazine Producing From Daqu For Light Fragrant Chinese-Liquor Making, Li Xiaoxia, Li Jingjing, Zhang Xiuhong
Screening And Identification Of Strains For Tetramethyl Pyrazine Producing From Daqu For Light Fragrant Chinese-Liquor Making, Li Xiaoxia, Li Jingjing, Zhang Xiuhong
Food and Machinery
No abstract provided.
Study On Adsorption Kinetics And Adsorptive Property Of Uio-66(Zr) For As3+, Yu Yang, Chen Tuanwei, Zhen Wenbo, Lu Ju, Zhang Jinliang, Kang Binbin
Study On Adsorption Kinetics And Adsorptive Property Of Uio-66(Zr) For As3+, Yu Yang, Chen Tuanwei, Zhen Wenbo, Lu Ju, Zhang Jinliang, Kang Binbin
Food and Machinery
In the present study, A new type metal organic framework (MOFs) UiO-66(Zr) was used as the adsorbent to study the influence on adsorption of As3+, including the adsorption time,temperature, and solution pH, and an adsorption kinetics model of As3+ was established through the researches on adsorption isotherm and adsorption kinetics. Our results showed that the new material UiO-66(Zr) has a high absorptivity for As3+ in wide-scope pH value solutions and the best pH value is 6.0. Excellent adsorptive property was found when using the solutions with the initial concentration ranging from 10 to 60 μg/L, and …
Comparation Volumes Of The Different Arsenic Species Between Raw And Cooked Rice Using Ae—Hplc—Icp—Ms, Tan Tingting, Wang Ying, Teng Jiuwei, Ou Shiyi
Comparation Volumes Of The Different Arsenic Species Between Raw And Cooked Rice Using Ae—Hplc—Icp—Ms, Tan Tingting, Wang Ying, Teng Jiuwei, Ou Shiyi
Food and Machinery
Microwave-assisted extraction-high performance liquid chromatography-inductively coupled plasma mass spectrometer (MAE—HPLC—ICP—MS) method was developed to determine the contents of arsenic species in rice. Treatments in optimal conditions of 80 ℃, microwave power of 600 W, for 20 min, As(Ⅲ), DMA, MMA, As(Ⅴ) could be completely extracted. Linear correlations of As(Ⅲ), DMA, MMA, As(Ⅴ) were satisfactory. Recoveries was between 86.15%～109.80%. The determination of As(Ⅲ), DMA and As(Ⅴ) by the proposed method in this study was comparable to that by national standard (GB/T 5009.11—2014). MMA determined by this proposed method was higher than that by national standard, indicating a better extraction. Our results …
Study On Precision Modeling Of Globoidal Cam In Filling Machine, Yu Jianwu, Shu Xin, Luo Hong, Long Xiaobing, Liao Zhiyuan
Study On Precision Modeling Of Globoidal Cam In Filling Machine, Yu Jianwu, Shu Xin, Luo Hong, Long Xiaobing, Liao Zhiyuan
Food and Machinery
In order to solve the problems and low accuracy modeling in globoidal cam designing as well as instability during high-speed filling, the mathematical model of profile surface of the globoidal cam was set up based on filling requirements and motion relationship between globoidal cam and indexing plate. The segmentation modeling is applied to create 3D solid model of globoidal cam. Surface analysis, inference inspection and kinematic analysis are studied for the created 3D model of globoidal cam, and the results showed that a high modeling accuracy was obtained, which may meet the design requirements of globoidal cam device for high-speed …
Design Of Heat Sealing Cam Of Forming Packaging Machine Based On “Trace Curve” Of Creo Parametric, Han Ju, Cao Lijie, Zhang Hongyu
Design Of Heat Sealing Cam Of Forming Packaging Machine Based On “Trace Curve” Of Creo Parametric, Han Ju, Cao Lijie, Zhang Hongyu
Food and Machinery
Based on working principle of forming packaging machine, it can be concluded that the profile of cam is the equidistant curve of the relative motion curve of driving and driven parts.Taking the cam blank as “paper part” and the center of the pulley as the reference, the equidistant curve of heat sealing cam will be created more conveniently and rapidly by using “Trace Curve” function of Creo Parametric.The method is applied to a certain type of forming packaging machine as an example. This method can be more regenerative by using parametric function of Creo, and it will be effectual in …
Performance Simulation Study On Reciprocating Cutter, Wu Yutang, Luo Shuqiang, Yang Mingjin, Jiang Meng
Performance Simulation Study On Reciprocating Cutter, Wu Yutang, Luo Shuqiang, Yang Mingjin, Jiang Meng
Food and Machinery
Based on the analysis on the working principle of the reciprocating cutter, the cutting performance of the cutter was simulated by Matlab to realize numerical simulation.. Taking the missing region rate and repeated cutting region rate as the cutting performance evaluation standards for the cutter, the effects of different cutting parameters on the cutting performance of the reciprocating cutter were studied, such as cutting edge height, forward speed of the cutter, front axle width and crank angular velocity. By range analysis and analysis of variance, the key factors were determined, which affecting the cutting performance of the reciprocating cutter and …
Study On Numerical Simulation Of Whirling Sedimentation Process Based On Cfd Technology In Whirlpool Separator, Chen Yusheng, Wang Yue, Dong Wenyong, An Jiayan
Study On Numerical Simulation Of Whirling Sedimentation Process Based On Cfd Technology In Whirlpool Separator, Chen Yusheng, Wang Yue, Dong Wenyong, An Jiayan
Food and Machinery
The whirlpool separator, which is a typical solid-liquid separation equipment, is one of the requested equipment in beer brewing. This study conducted by Computational Fluid Dynamics (CFD) technology examined the feed tube angles of 0～25° on the separation effect of whirlpool settling vat in order to find swing settlement regularity in the process. Results showed that, under the same feeding condition, the sedimentation effect could be improved by increasing incident angle within a certain degree. Nevertheless, increasing the incident angle to further degree would reduce the settlement effect. The result provides reference for structure design and optimization of whirlpool separator.
Experiment And Analysis Of Method On Stripping Off Green Husk From Ripened Walnuts By Pressing, Liang Jinsheng, Cao Jujiang, Wu Dongze
Experiment And Analysis Of Method On Stripping Off Green Husk From Ripened Walnuts By Pressing, Liang Jinsheng, Cao Jujiang, Wu Dongze
Food and Machinery
Based on the analysis of disadvantages of the green-husk walnuts stripping methods and the characteristics of ripened walnuts, the pressing test was carried out, and pressure-deformation figure of ripened green husk walnut was mapped. By analysis of test data, the breakdown pressure and the corresponding compression of the ripened walnut green husk and shell were determined. Based on the significant difference on breakdown pressure between the green husk and shell, and the state of green husk rupture and separation by pressing, the method of stripping off green-husk by pressing is put forward. These results provide the basis for new equipment …
Design Of Automatic Roller Sieve Device For Fruit Cleaning Impurities And Sorting, Liu Zhiyong, Liu Junxia, Yang Jiapeng, Wang Xiaohui, Hai Ling, Liu Wen
Design Of Automatic Roller Sieve Device For Fruit Cleaning Impurities And Sorting, Liu Zhiyong, Liu Junxia, Yang Jiapeng, Wang Xiaohui, Hai Ling, Liu Wen
Food and Machinery
The study developed an automatically cleaning impurity and sorting device of tomato sauce production line. The device is constitutes with the bracket, sprocket wheel, sprocket roller sieve, discharging tray, gear motor, photoelectric sensor and automatic control system. By the experimental analysis, the average sorting fruits selection rate of the device is as high as 97%, average lump impurity removal rate was 78%, average strip impurity removal rate was 99%, Suitable for continuous treatment of a large number of raw materials containing impurities, to meet the actual needs of production.
Study On A New Type Of Continuous Belt Rice Steamer, Hou Yaru, Liu Yude, Liu Yongxin
Study On A New Type Of Continuous Belt Rice Steamer, Hou Yaru, Liu Yude, Liu Yongxin
Food and Machinery
A new prototype of continuous belt rice steamer was proposed. Firstly, an introduction of working principle was made, and then by experiments and calculations, the parameters for steaming and cleaning processes were obtained respectively. The problems were also illustrated, such as running speed in steaming, how to controlling of the rice softness, and the operation of the spray system. Experimental results showed that the newly presented rice steamer had numerous benefits, such as simplified structure, fewer breakdown proportion, less service requirements, adjustable output, integration of cooking and cleaning,etc, which make it fit the concept for modern product design.
Contents And Changes Of Main Fatty Acids In The Linseed Oil, Lu Yinjie, Hao Liping, Guo Yuxuan
Contents And Changes Of Main Fatty Acids In The Linseed Oil, Lu Yinjie, Hao Liping, Guo Yuxuan
Food and Machinery
The composition and contents of the main fatty acids were analyzed by gas chromatography (GC) in the linseed oil. The changes of the main fatty acids and peroxide value in the linseed oil during the storage were analysed by ccelerated oxidation method. The results showed that five kinds of main fatty acids are included in linseed oil, namely linolenic acid, linoleic acid, oleic acid, palmitic acid and stearic acid, and 53.6% of them was linolenic acid. With the extension of storage time, the contents of every kind of unsaturated fatty acids in linseed oil decreased, showing a linear relevance to …
Research On Effects Of Chicken Eggshell Dark Spots On Chicken Egg Storage, Zhang Mingrong, Ye Jinsong, Zhang Zili, Li Xinyang, Wang Chengcheng, Cai Yunqiong
Research On Effects Of Chicken Eggshell Dark Spots On Chicken Egg Storage, Zhang Mingrong, Ye Jinsong, Zhang Zili, Li Xinyang, Wang Chengcheng, Cai Yunqiong
Food and Machinery
The egg shells with different dark spots coverage (0%, 10%, 30%, 60%) were selected to study the influence of dark spots on the eggs’ storage properties. The quality indexes of eggs including freshness indexes (weight loss, relative density, yolk index, egg white pH value, Haugh unit, etc.) and microbial indexes(total bacterial counts, E. coli, mold, Salmonella, etc.)were analysed during storage. The results showed that the rate of freshness declined and microbial growth of dark spots eggs were faster than those normal. Morover, with the increase of egg shell dark spots coverage, the freshness declining and the microbe growing became faster …
Study On Mutagenic And Anti-Mutafenic Effect Of Korean Soybean Paste With Different Storage Period, Li Xue, Shi Dejun, Huang Baishen, Xu Bin, Cui Chengbi
Study On Mutagenic And Anti-Mutafenic Effect Of Korean Soybean Paste With Different Storage Period, Li Xue, Shi Dejun, Huang Baishen, Xu Bin, Cui Chengbi
Food and Machinery
In order to explore the mutagenic and anti-mutagenic effect on the different storage periods of Korean soybean paste. In this study, on the basis of detecting mutagenicity effect by modified Ames test, and detecting the anti-mutagenic effects of the Korean soybean paste samples with different storage time have on Mouse bone marrow micronucleus test. Result: the mutagenicity of Korean soybean paste were negative; Anti-mutagenic effect were enhanced with the extension of storage time and the concentration, the anti-mutagenic effect of TA100 and TA98 strains induced by Trp-p-1 and MNNG reached the maximum value at 12 months of storage. And there …
Comparative Analysis Of Storage Characters On Main Breeds Of Celery In Beijing, Guo Zhenlong, Chen Xiangning, Xu Li, Zhang Qi, Zhao Ruixue
Comparative Analysis Of Storage Characters On Main Breeds Of Celery In Beijing, Guo Zhenlong, Chen Xiangning, Xu Li, Zhang Qi, Zhao Ruixue
Food and Machinery
Eleven kinds of celery in Beijing were used. Six Indices including water content, chlorophyll content, respiration intensity, relative conductivity, cellulose content and lignin content of celery were measured. The results showed that, during the storage period, water content in Japanese Small Parsley and White Celery decreased sharply; chlorophyll content in Majiagou, Emperor and Jade Emperor maintained at a high level, but it is low in Purple Celery and White Celery, while the lowest level appeared in Jade Emperor and White Celery; White Celery entered the stage of senescence in the 1st day with the respiratory top; White Celery and Purple …
Effect Of Ventilation Cooling Technology By Cover Surface And Guiding Flow On Paddy Quality During Storage, Wu Xiaojuan, Wu Wei, Gao Chongming, Chen Liang
Effect Of Ventilation Cooling Technology By Cover Surface And Guiding Flow On Paddy Quality During Storage, Wu Xiaojuan, Wu Wei, Gao Chongming, Chen Liang
Food and Machinery
Ventilation cooling technology by cover surface and guiding flow was used to store paddy, and effects of storage on moisture content, yellow-colored rice, fatty acid value, tasting score value of milled rice, husked rice yield, head rice yield of paddy were investigated respectively. Compared to conventional storage, the results indicated that the application of ventilation cooling technology by cover surface and guiding flow could decrease moisture content loss of paddy as 0.5%. Moreover, the content of yellow-colored rice was found remaining at around 0.1%, lower than that of the control storehouse as 0.8%, and fatty acid value was 19.2 mg …
Effect Of Storage Conditions On Nutritional Quality Of Sunflower Seeds, Zhu Shuilan, Feng Jianxiong, Liu Guangxian, Min Hua, Zhou Jinying
Effect Of Storage Conditions On Nutritional Quality Of Sunflower Seeds, Zhu Shuilan, Feng Jianxiong, Liu Guangxian, Min Hua, Zhou Jinying
Food and Machinery
No abstract provided.
Effect Of Packing Materials And Methods On Quality Of Duck Meat During Storage, Wu Wenjin, Wang Lan, Ding Anzi, Xiong Guangquan
Effect Of Packing Materials And Methods On Quality Of Duck Meat During Storage, Wu Wenjin, Wang Lan, Ding Anzi, Xiong Guangquan
Food and Machinery
The study was to investigate the effect of packing materials (PVC, composite aluminum foil bag) and methods (generally packing, vacuum packing) on the quality of duck meat during the storage at 4 ℃. The results showed that the duck meat packed with the same method, which packed with the aluminum foil bag material have maintained good color and water holding capacity. The value of the total volatile basic nitrogen was low, and the value of pH was stability. The quality of duck meat packed with the aluminum foil bag material was better than packed with PVC. The duck meat packed …
Study Of Storage Conditions On Monascus Purpureus Spore Viability, Li Yongbo, Li Jing, Song Lisha, Xiao Guoxue, Ma Yuan
Study Of Storage Conditions On Monascus Purpureus Spore Viability, Li Yongbo, Li Jing, Song Lisha, Xiao Guoxue, Ma Yuan
Food and Machinery
Using the spore germination rate as evaluation index, study the effects of light, storage temperature, oxidation reduction potential, metal ions and low concentration of lactic acid on Monascus purpureus congjiang var. spore viability. The results showed that at the 2 ℃low-temperature storage, darkness, adding 400 μg/mL of VC, adding 1% lactic acid were beneficial to the Monascus purpureus congjiang var. spore viability. With the addition of 400 μg/mL VC had the highest activity, spore germination rate reached 74.22%; treatments of light, ultraviolet rays, 0.1% H2O2, Monascus purpureus congjiang var. spore germination rate were …
Structure-Activity Relationship Of Nf-Κb Inhibition From Resveratrol Analogues, Liu Lianxin, Liu Yu, He Weiping
Structure-Activity Relationship Of Nf-Κb Inhibition From Resveratrol Analogues, Liu Lianxin, Liu Yu, He Weiping
Food and Machinery
Based on the NF-κB inhibition data provided by literature, the descriptors of 17 resveratrol analogues were obtained though the iterative method for optimization, according the approach of quantifying substituent and substituted positions. The Qantitative Structure-activity Relationship model was built up by using multiple linear regression analysis. The results showed that the sequence of substituents to inhibit the activation of the oncogenic transcription factor NF-κB was -OH ＞-Naphthyl ＞-CF3 ＞-MeO ＞-Me2N ＞-F, and the NF-κB inhibition of 3th substituted position was greater than the one of 4th substituted position, and the inhibition of 4th substituted position was greater than the one …
Extraction And Purification Of Polysaccharide From Spirulina And Its Anti-Colonic Adenocarcinoma Capacity, Wang Qun, Chen Shike, Li Haoyao, Chen Xuexiang, Cao Yong
Extraction And Purification Of Polysaccharide From Spirulina And Its Anti-Colonic Adenocarcinoma Capacity, Wang Qun, Chen Shike, Li Haoyao, Chen Xuexiang, Cao Yong
Food and Machinery
The polysaccharide was from Spirulina powder by the means of hot water extraction after repeated freezing-thawing cycles and ultrasonic treatment. The effects of lasted time and extraction temperature and time, ratio of solid to liquid and times of extraction on polysaccharide yield were studied by single factor and orthogonal experiments. PSP was separated into PSP-3 by membrane separation techniques, and it was investigated by MTT assay on colon adenocarcinoma cells (Caco-2 cell growth inhibition) to determine the optimal concentration. Finally, the molecular of PSP-3 was determined by gel permeation chromatography (GPC). Experiment results showed that the optimum conditions were as …
Effects Of Blueberry Anthocyanin On Organ Tissue Antioxidant Defense Function In Experimental Diabetic Mice, Wei Yanshuang, Tian Mixia, Zhang Meijiao, Yuan Fenghao
Effects Of Blueberry Anthocyanin On Organ Tissue Antioxidant Defense Function In Experimental Diabetic Mice, Wei Yanshuang, Tian Mixia, Zhang Meijiao, Yuan Fenghao
Food and Machinery
To study the effects of blueberry anthocyanin on organ tissue antioxidant activity in experimental diabetic mice. The instreptozotocin-induced diabetic mice were divided into different groups. Diabetic mice were administered for 4 weeks, Malondialdehyde content, the activity of superoxide dismutase and glutathione peroxides, total antioxidant capacity, inhibiting ability of hydroxyl radicals on organ tissue were determined. The experimental data showed that model with blueberry anthocyanin group compared with model control, the content of Malondialdehyde were significantly reduced (P<0.05) while glutathione peroxidase，superoxide dismutase and total antioxidant capacity, inhibiting hydroxyl free radical ability increased markedly in the tissue of all organ (P<0.05). It shows that Blueberry anthocyanin can enhance the cell tissue antioxidant activity.
Effects Of Drying Methods On Physiochemical Properties And Antioxidant Activities Of Polysaccharides From Roots Of Arctium Lappa L., Yu Jun, Zhang Li, Li Yabo, Jia Chunhong
Effects Of Drying Methods On Physiochemical Properties And Antioxidant Activities Of Polysaccharides From Roots Of Arctium Lappa L., Yu Jun, Zhang Li, Li Yabo, Jia Chunhong
Food and Machinery
Using the roots of Arctium lappa L. as materials to extract polysaccharides from the roots of Arctium lappa L. The influences of different drying methods were studied, including hot air drying, vacuum drying and freeze drying, on the physiochemical properties and antioxidant activities of polysaccharides from roots of Arctium lappa L.. Hot air drying, vacuum drying and freeze drying methods polysaccharides from roots of Arctium lappa L. were all gray solid, non-starch polysaccharides and no polyphenols content. Freezing drying Arctium lappa polysaccharides had higher total sugar and protein. And the contents of total sugar and protein were (90.72±1.45)% and (2.41±0.17)%. …