Identification Of Quercetin In Ethanol Extract Of Lotus Seed Pod And Its Biological Activity,
2016
Minnan Science and Technology Institute, Fujian Normal University, Quanzhou, Fujian 362332, China
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 …
Effects Of Amylose Chain Length On Film Properties Ofwaxy Maize Starch,
2016
The State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
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 …
Study On Adsorption Kinetics And Adsorptive Property Of Uio-66(Zr) For As3+,
2016
College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
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 …
Establishment Of Real-Time Quantitative Pcr Assay For The Detection Of Enterobacter Sakazakii Based On Internal Amplification Control,
2016
The Technical Center of Hebei Entry-exit Inspection and Quarantine Bureau, Shijiazhuang, Hebei 050051, China
Establishment Of Real-Time Quantitative Pcr Assay For The Detection Of Enterobacter Sakazakii Based On Internal Amplification Control, Wang Jinfeng, Wang Jianchang, Hu Lianxia, Sun Xiaoxia, Chen Zhimin, Jiang Yanfen
Food and Machinery
Based on ompA gene sequence of Enterobacter sakazakii, the specific primer and probe were designed. An internal amplification control (IAC) was added and used to monitor the performance of reaction system. The assay could be used reliably to detect E. sakazakii genome DNA with the sensitivity of 1 pg. The detection limit for E. sakazakii was 1×104 CFU when used the DNA extracted by water boiling as the template. With the use of ompA, the detection limit can reach 103 copies. Through the standard curves of ompA, the quantification was linear between Ct and template copy number (R …
Comparation Volumes Of The Different Arsenic Species Between Raw And Cooked Rice Using Ae—Hplc—Icp—Ms,
2016
Department of Food Science and Engineering, Jinan University, Guangzhou, Guangdong 510632, China
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 …
Discussion On Detection Method Of Potassium Permanganate Consumption In Hygienic Standard Of Epoxy Phenolic Coatings For Inner Wall Of Food Cans,
2016
Hebei Chengde LoLo Co., Ltd., Chengde, Hebei 067000, China
Discussion On Detection Method Of Potassium Permanganate Consumption In Hygienic Standard Of Epoxy Phenolic Coatings For Inner Wall Of Food Cans, Zuo Aidong, Gao Yuli, Zhao Shunge, Du Jiangmei
Food and Machinery
The potassium permanganate consumption of the tin cans coated with epoxy phenolic coatings as the protective layer was detected according to the national standard of GB/T 5009.60-2003 method for analysis of hygienic standard of products of polyethylene, polystyrene and polypropyrene for food packaging. The method required accurate titer of potassium permanganate standard solution, and was not suitable for daily rapid detection. The test method adjusted the concentration of potassium permanganate solution and determined the value of f instead of the titration process of the standard solution. By the data analysis of two kinds of test conditions, the creditability and feasibility …
Design Of Automatic Roller Sieve Device For Fruit Cleaning Impurities And Sorting,
2016
Xinjiang Institute of Engineering, Urumqi, Xinjiang 830091, China
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.
Design Of Heat Sealing Cam Of Forming Packaging Machine Based On “Trace Curve” Of Creo Parametric,
2016
North China University of Science and Technology, Tangshan, Hebei 063009, China
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 …
Effect Of Ventilation Cooling Technology By Cover Surface And Guiding Flow On Paddy Quality During Storage,
2016
College of Food Science and Engineering, Center South University of Forestry and Technology, Changsha, Hunan 410004, China; National Engineering Laboratory for Rice and By-product Deep Processing, Changsha, Hunan 410004, China
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 …
Study On Mutagenic And Anti-Mutafenic Effect Of Korean Soybean Paste With Different Storage Period,
2016
School of Medical Sciens, Yanbian University, Yanji, Jilin 133002, China; School of Public Health, Jilin Medical University, Jilin, Jilin 132013, China
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 …
Effect Of Storage Conditions On Nutritional Quality Of Sunflower Seeds,
2016
Jiangxi Academy of Agricultural Sciences, Nanchang, Jiangxi 330200, China
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.
Comparative Analysis Of Storage Characters On Main Breeds Of Celery In Beijing,
2016
Department of Food Science and Engineering, Beijing University of Agriculture, Beijing 102206, China
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 Packing Materials And Methods On Quality Of Duck Meat During Storage,
2016
Research Institute of Agricultural Products Processing and Nuclear-Agricultural Technology, Hubei Academy of Agricultural Sciences, Wuhan, Hubei 430064, China; Agricultural Products Processing Subcenter of Hubei Agricultural Science & Technology Innovatio
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 …
Extraction And Purification Of Polysaccharide From Spirulina And Its Anti-Colonic Adenocarcinoma Capacity,
2016
College of Food Science, South China of Agricultural University, Guangzhou, Guangdong 510642, China; Guangdong Province Engineering Research Center for Bioactive Natural Products, Guangzhou, Guangdong 510642, China
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 …
Study Of Storage Conditions On Monascus Purpureus Spore Viability,
2016
Academy of Life Science and Agriculture, Qiannan Normal College for Nationalities, Duyun, Guizhou 558000, China
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 …
Effects Of Blueberry Anthocyanin On Organ Tissue Antioxidant Defense Function In Experimental Diabetic Mice,
2016
Dalian Nationalities University, Dalian, Liaoning 116600, China
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.
Study On Microwave-Assisted Extraction And Antioxidation Of Polysaccharides From Water Chestnut,
2016
Collge of Chemistry and Bioengineering, Guilin University of Technology, Guilin, Guangxi 541004, China
Study On Microwave-Assisted Extraction And Antioxidation Of Polysaccharides From Water Chestnut, Zhang Huixiang, Yang Shijun, Zeng Jin
Food and Machinery
The water chestnut as raw material, the extraction conditions of polysaccharide were studied by single factor and orthogonal experiment, antioxidant activity on polysaccharide from water chestnut was detected, respectively. The results showed that with distilled water as extraction solvent, extracting process of polysaccharide from water chestnut had microwave power of 600 W, solid-liquid ratio of 1∶15, extracting time of 3 min, under these conditions, the extraction rate of polysaccharide could reach 8.12%, and the polysaccharide purity could up to 83.2%. The polysaccharide from water chestnut had strong reduction power and scavenging ability to hydroxyl radicals in the range of 0.01～0.10 …
Separation And Purification Geraniol-Beta-D-Glycosidase By Chemical Synthesis,
2016
College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, Guangdong 524088, China
Separation And Purification Geraniol-Beta-D-Glycosidase By Chemical Synthesis, Cheng Dongwei, Yang Xihong, Xie Wancui, Gao Qian, Lei Sheng
Food and Machinery
In order to find an efficient and systematic way of producing and purifying geraniol glycosidase，an improved method of Koenigs-Knorr was gotten, which used the silicone to hold silver carbonate catalyst to improve the productivity and perfects the synthesis process, separating and purifying the crude sample by silica gel column chromatography(SGCC) and high performance liquid chromatography (HPLC) . The method of SGCC applies the thin plate chromatography to get the better flow matches which is the ethyl acetate and ethanol according to 50:1, 40:1, 30:1, but the HPLC selects water and acetonitrile which is to 45:55, each of the two flows …
Optimization Of Extraction Conditions Of Freshwater Snail Salt Soluble Protein And Its Processing Properties,
2016
College of Life Science, Hunan University of Arts and Science, Changde, Hunan 415000, China; Collaborative Innovation Center for Efficient and Health Production of Fisheries in Hunan Province, Changde, Hunan 415000, China; Key Laboratory of Health Aquacul
Optimization Of Extraction Conditions Of Freshwater Snail Salt Soluble Protein And Its Processing Properties, Wang Bohua, Zhu Baohong, Yang Pinhong, Cao Zhen, Wang Tingyun, Chen Huimin
Food and Machinery
The resource of freshwater snail is very rich in China, but its processed products are not very much. Using salt soluble protein as a natural food additive in meat products can improve its quality. Extraction conditions were optimized using salt soluble protein yield, and determined the main processing properties such as emulsification capability, foaming capability and water-holding capability. The Results showed that freshwater snail salt soluble protein yield can reach 13.6％ when NaCl concentration was 0.7 mol/L, pH 8.0, extraction time and solid-liquid ratio of 1∶6 for 24 hours. The best emulsification ability and emulsification stability index were 27.67 m …
Chitosan-Based Flocculation And Salt Induced Aqueous Two-Phase Extraction Of Procyanidins From Red Grape Seeds,
2016
College of Agriculture and Biotechnology, Hexi University, Zhangye, Gansu 734000, China; Key Laboratory of Hexi Corridor Resources Utilization of Gansu, Zhangye, Gansu 734000, China
Chitosan-Based Flocculation And Salt Induced Aqueous Two-Phase Extraction Of Procyanidins From Red Grape Seeds, Zhang Xifeng, He Qian, Zhang Bin, Wang Minghui, Luo Guanghong
Food and Machinery
According to the recovery rate of procyanidins, the purification process of procyanidins from red grape seeds by chitosan flocculation was optimized by orthogonal test．After procyanidins in the ethanol aqueous extract solution of red grape seeds was separated into two phases by salts, the partition characteristics of it in two phases were studied. Chitosan flocculation was investigated, and the results were as follows. The optimum flocculation was obtained using 2 mL of chitosan with 20 mL ethanol solution of procyanidins at 35 ℃ and pH 4. The recovery rate of procyanidins reached to 95.62%. Then, the salts inducing aqueous two-phase extraction …
