Biological Characteristics And Pathogenicity Of Botryosphaeria Parva Isolated From ‘Hongyang’ Kiwifruit,
2017
College of Food Science, Sichuan Agricultural University, Ya’an, Sichuan 625014, China; Ya’an Polytechnic College, Ya’an, Sichuan 625000, China
Biological Characteristics And Pathogenicity Of Botryosphaeria Parva Isolated From ‘Hongyang’ Kiwifruit, He Jingliu, Qin Wen, Liu Xiaoyan, Li Hongyi, Shen Dandan
Food and Machinery
Objects: In order to understand the biological characteristics of Botryosphaeria parva causing soft rot of ‘Hongyang’ kiwifruit. Methods: The mycelial structure was observed by optical microscopy and transmission electron microscopy. The growth curve was established with dry cell weight. Multiple methods could be induced to sporulate. The optimum growth condition of Botryosphaeria parva, and its relationship between lethal temperature and lethal time, as well as its pathogenicity in other fruits were studied. Results: There were branching, diaphragm and intact cell for the mycelium of Botryosphaeria parva. The growth curve of Botryosphaeria parva was divided into three periods, including lag phase …
Effect Of Hyaluronic Acid Coating On Fresh Quality Of Crucian Carp (Carassius Auratus) During The Partial-Freezing Storage,
2017
College of Food and Pharmaceutical Engineering, Suihua University, Suihua, Heilongjiang 152061, China
Effect Of Hyaluronic Acid Coating On Fresh Quality Of Crucian Carp (Carassius Auratus) During The Partial-Freezing Storage, Guo Li, Wang Peng, Jiang Zhe, Guo Yanli, Zhou Fengchao, Chai Yunlei
Food and Machinery
The surface of Crucian carp (Carassius auratus) meat was coated with different concentrations of hyaluronic acid (HA) and stored at partial-freezing condition(-3 ℃) to study the effect of hyaluronic acid on its freshness preservation. The total volatile base-nitrogen (TVB-N), pH value, conductivity, thiobarbituric acid (TBA), water holding capacity, color and texture were measured as quality indexes to analyze the change of fish meat. The results showed that the meat quality of Crucian carp decreased slowly by combination of HA coating during the partial-freezing storage. The fish meat with 0.9% HA coating maintained its fresh quality on TVB-N (9.64 mg/100 g), …
Effects Of Leaf Crude Extracts From Gingo Biloba L. On The Preservation Of Litchi,
2017
Department of Chemistry and Biological Engineering, Hunan University of Science and Engineering, Yongzhou, Hunan, 425199, China; Hunan Provincial Engineering Research Center for Ginkgo biloba, Yongzhou, Hunan, 425199, China; College of Life Science, Yanan
Effects Of Leaf Crude Extracts From Gingo Biloba L. On The Preservation Of Litchi, Li Ling, Yan Xuyu, Chen Tiebi, He Fulin
Food and Machinery
The leaf crude extracts were obtained from Gingo biloba L. using ethanol extraction method, and its preservation on litchi was studied on the aspects of color, VC content, weight loss rate, the total number of bacteria and sensory evaluation. The results showed that leaf crude extract of ginkgo biloba could reduce the loss of water, inhibit the browning, reduce the decrease of VC content, the infection of litchi flesh and the decay rate of litchi, and keep the sensory quality of litchi. Its ability of antibacterial effects and preservation was followed by 0.6% leaf crude extract of ginkgo …
Effect Of Anti-Aging On Human Epidermal Keratinocyte By Uvb Induced For Green Tea Crude Water Extract,
2017
Key Lab of Tea Science of China Ministry of Education, Hunan Agricultural University, Changsha, Hunan 410128, China
Effect Of Anti-Aging On Human Epidermal Keratinocyte By Uvb Induced For Green Tea Crude Water Extract, Wang Zhen, Liu Zhonghua, Cai Shuxian, Liu An, Wen Yi
Food and Machinery
In this study, anti-aging effects of green tea crude water extract were studied using human epidermal keratinocyte as model which induced by ultraviolet B (UVB). The green tea extract of 0～20 μg/mL was added to DMEM cell culture medium, then cells were induced by radiation of 60 mJ/cm2 UVB. The anti-aging effects were studied by cellular morphology, apoptosis level, cell viability, intracellular antioxidant enzyme activity, intracellular active oxygen cluster (ROS) content, malonaldehyde（MDA）content, cell mitochondrial membrane potential and Na+,K+-ATP enzyme activities. The results showed that the crude extract of green tea could obviously improve cell volume, …
Interventional Effects Of Wild Oenanthe Javanica Extract In Guizhou Province In Type 2 Diabetic Mice,
2017
Guiyang Nursing Vocational College, Guiyang, Guizhou 550081, China
Interventional Effects Of Wild Oenanthe Javanica Extract In Guizhou Province In Type 2 Diabetic Mice, Chen Xiaojing, Guo Xiaoqing, Wu Nayiyu, Dai Tiantian
Food and Machinery
After 5 weeks feeding, the type 2 diabetes mellitus was established by intraperitoneal injection of low-dose STZ (75 mg/kg), to measure and statistically analyz the body weight, blood lipid level, fastig blood glucose level. The extracs of Oenanthe javanica can prevent the increase of blood glucose and the reduction of blood weight in STZ-induced type 2 diabets mice. In the study, the type 2 diabetic mice modle using high glucose and high fat diet and low dose STZ injection occurred at 3weeks, the achievment ratio was 80%, the aqueous extracts composition mold rate was 40%, the alcohol extracts was 60%. …
Research On Antimicrobial And Antioxidant Activities Of Major Components Of Lemon Peel Essential Oil,
2017
College of Food Engineering and Biotechnology, Hanshan Normal College, Chaozhou, Guangdong 521041, China
Research On Antimicrobial And Antioxidant Activities Of Major Components Of Lemon Peel Essential Oil, Zhang Bin, Hou Xiaozhen, Qin Yi, Ding Xin, Deng Qihai, Huang Linjie
Food and Machinery
Antioxidant and antibacterial activities in vitro of three major components dl-limonene, γ-terpinene and α-terpineol contained in Eureka lemon peel essential oil as well as its compound were explored in mainly in the determination of DPPH free radical as well as OH· free radical scavenging ability and its bacteriostasis size and MIC against Escherichia coli, Bacillus subtilis and Staphylococcus aureus of the three major components. Results showed that dl-limonene, γ-terpinene, α-terpineol had certain scavenging effect on OH· free radical with clearance rate between 48.45%～77.94%; and the scavenging effect of DPPH free radical was higher than that of LEO at the same …
Functional Properties And Optimization Of Microwave Assisted Alkaline Extraction Of Dietary Fiber From Pomelo Peel,
2017
College of Life Sciences and Chemistry Engineering, Hunan University of Science and Engineering, Yongzhou, Hunan 425199, China; Key Laboratory of Comprehensive Utilization of Dominant Plant Resources in Southern Hunan, Yongzhou, Hunan 425199, China; Hunan
Functional Properties And Optimization Of Microwave Assisted Alkaline Extraction Of Dietary Fiber From Pomelo Peel, Yan Rongling, Liao Yang, Mao Longyi, He Fulin
Food and Machinery
The extraction technology of dietary fiber from Jiangyong pomelo peel by microwave assisted alkali method was established and the physicochemical properties and antioxidant activity of dietary fiber were analyzed. The results showed that, ensuring the extraction rate of soluble dietary fiber preferentially, the optimum extraction process of dietary fiber were solid-liquid ratio of 110 (g/mL), NaOH concentration of 8%, microwave time 40 s and microwave power 350 W. With the contrl of the optimal conditions, the maximum extraction yield rate of soluble dietary fiber (SDF) and insoluble dietary fiber (IDF) was 40.8% and 45.1%, respectively. Moreove, the dietary fiber showed …
Study On Microwave-Assisted Extraction And Antioxidant Activity Of Total Saponins From Chenopodium Quinoa Peel,
2017
Department of Chemistry, Xinzhou Teachers University, Xinzhou, Shanxi 034000, China
Study On Microwave-Assisted Extraction And Antioxidant Activity Of Total Saponins From Chenopodium Quinoa Peel, Yang Jie, Gao Fengxiang, Yang Min, Bian Hongyu, Zhang Shigang, Zhao Erlao
Food and Machinery
The microwave-assisted extraction process of total saponin from Chenopodium quinoa peel of quinoa was optimized by one-factor combined response surface method with total saponin yield as index. The antioxidant activities were evaluated by DPPH free radical, hydroxyl radical and ABTS free radical method. The results showed that the ethanol concentration, microwave power and solid-liquid ratio had a significant effect on the total saponin yield. The optimum conditions were ethanol concentration 68%, microwave power 455 W, solid-liquid ratio 132 (g/mL), microwave time 10 min, and extraction times 2 times. The yield of total saponin from Chenopodium quinoa peel was 26.329 mg/g. …
Ultrasonic-Assisted Extraction Process And Characteristics Analysis Of Collagen From Schizothorax Prenanti Bone,
2017
College of Food Science, Sichuan Agricultural University, Ya’an, Sichuan 625014, China
Ultrasonic-Assisted Extraction Process And Characteristics Analysis Of Collagen From Schizothorax Prenanti Bone, Yan Qiuping, Wu Yinglong, Li Yuee, Jiang Yan, Guo Yuchun, Qin Tao
Food and Machinery
The ultrasonic-assisted acid extraction technology of collagen from Schizothorax prenanti bone was studied using univariate analysis and orthogonal test to improve the extraction rate. The purified collagen was analyzed by the methods of polyacrylamide gel electrophoresis , ultraviolet spectroscopy, amino acid and denaturation temperature analysis. The results showed that ultrasonic pretreat-ment increased the collagen extraction rate significantly. The optimal extracting conditions were as followed: extracting temperature 30 ℃, ratio of, liquid-solid 751 (mL/g), time for pre-treating by the ultrasonic 20 min, and extracted time. In the conditions, the collagen extraction ratio was 6.91% and the purity reached 89.74%. In addition, …
Study On Separation And Purification Process Of Fisetin From Cotinus Coggygria Leaves With Polyamide,
2017
School of Chemistry and Biology Engineering, Changsha University of Science＆ Technology, Changsha, Hunan 410114, China
Study On Separation And Purification Process Of Fisetin From Cotinus Coggygria Leaves With Polyamide, Xu Na, Xu Kaiyang, Fang Fang, Shu Xiaoshun, Li Chiling
Food and Machinery
To study the separation and purification of fisetin from Cotinus coggygria leaves with polyamide by using the adsorption rate and elution rate of fisetin as index. The effects of sample flow rate, sample concentration, concentration of eluent and dosage on purification process were investigated from static and dynamic adsorption. The optimum process conditions were as followed: the sample flow rate was 1 mL/min, the sample concentration was 0.535 8 mg/mL, the sample volume was 2 BV, the eluent was 70% ethanol, and the eluent dosage was 4 BV. Conclusion: The crude extract of Cotinus coggygria leaves was refined three times …
The Technology Optimization Of The Freezing Microwave Treatment Assisted Extraction Of Phenols From Red Grape Juice,
2017
College of Food Science and Pharmacy, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China
The Technology Optimization Of The Freezing Microwave Treatment Assisted Extraction Of Phenols From Red Grape Juice, Hong Meiling, Feng Zuoshan, Bai Yujia, Zheng Wancai, Ma Dexiu
Food and Machinery
In order to promote the rapid dissolution of anthocyanins and other polyphenols in colored grapes into grape juice, taking cabernet sauvignon grape as raw materia, using non thermal processing technology combined with freezing microwave treatment. Based on the single factor experiment, choosing the anthocyanin and polyphenol content of dual response value. Factors such as sample quality, freezing time, freezing temperature, microwave time and microwave power were selected as optimization factors, designed optimization of response surface methodology based on Box-Behnken experimental design principle. The optimum conditions for the simultaneous optimization of the two indicators were as follows: The sample quality was …
Study On Optimization And Effect Of Microwave Assisted Dilute Acid Degradation Of Corn Cob,
2017
College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu 211800, China
Study On Optimization And Effect Of Microwave Assisted Dilute Acid Degradation Of Corn Cob, Zhu Liyan, Yang Xiaorui, Wang Wei, Liang Jinhua, Zhu Jianliang
Food and Machinery
In order to improve the utilization rate and economic benefit of lignocellulose, the hydrolysis of corncob was studied by the method of using dilute acid as catalyst under microwave irradiation. Through single factor and orthogonal way ,the influences of microwave radiation time, microwave power, acid concentration, solid-liquid ratio and particle size of corncob were discussed with sugar yield and raw material conversion rate as index ; Raw materials and three methods of treatment of hydrolyzed residue were analyzed by scanning electron microscopy (SEM) and infrared spectroscopy (FT-IR).The results showed that the optimal reaction conditions were as follow: corncob was crushed …
Effect Of Microwave Drying Conditions On Volatile Oil Content In Zanthoxylum Schinifolium And Its Process Optimization,
2017
Food Science College, Southwest University, Chongqing 400715, China
Effect Of Microwave Drying Conditions On Volatile Oil Content In Zanthoxylum Schinifolium And Its Process Optimization, Peng Lin, Tian Bin, Wang Lin, Kan Jianquan, Chen Hourong
Food and Machinery
The Optimization of the microwave drying process was investigated using the response surface method in the “Jiuyeqing” Zanthoxylum schinifolium,with enzyme-inactivated by steam. The effects of microwave power, volume and intermittent microwave time on the content of volatile oil in microwave-dried Z. schinifolium were studied, and the suitable influence range was determined. On the basis of single factor experiment, the content of volatile oil was based on the Box-behnken Center combination test design principle, and the microwave drying regression model of it was established. The results showed that the optimal microwave drying parameters were as follows. The microwave power was 354.26 …
Research Progress Of Detection Technology And Degradation Dynamics Of Spirotetramat In Fruits And Vegetables,
2017
Southwest University, Citrus Research Institute, Chongqing 400712, China
Research Progress Of Detection Technology And Degradation Dynamics Of Spirotetramat In Fruits And Vegetables, Ye Yufeng, Zhou Jie, Liu Yan, Ao Yan, Zhu Lisha, Zhang Jing, Jiao Bining
Food and Machinery
In order to get a comprehensive understanding of the residual level and metabolism of spirotetramat in fruits, vegetables and soils and reasonable evaluation of the medication safety, we discuss the research progress of the spirotetramat on its registration, limited standard, detection technology, degradation dynamics and residual status. Finally, the relative advises were put forward to solve the existing problems in the application of spirotetramat.
A Review Of The Development In Pretreatment Methods For Pcr Detection Of Food-Borne Pathogens,
2017
Institute for Agri-food Standards and Testing Technology, Shanghai Academy of Agricultural Science, Shanghai 201403, China
A Review Of The Development In Pretreatment Methods For Pcr Detection Of Food-Borne Pathogens, Bai Yalong, Suo Yujuan, Zhou Changyan
Food and Machinery
Molecular detection methods based on PCR (polymerase chain reaction) are widely used in the rapid detection of food-borne pathogens. However, in practical applications pretreatment method is also a critical step in rapid detection except the optimization of PCR. In this review, the pretreatment methods (including the centrifugation, membrane filtration, magnetic separation) for PCR detection of food-borne pathogens were systematically summeried. In particular, the magnetic separation was emphatically reviewed in the PCR detection of food-borne pathogens.
Application Of Radio Frequency Heating In Food Industry,
2017
College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; Engineering Research Center of Food Thermal-processing Technology, Shanghai 201306, China; National R&D Branch Center for Freshwater Aquatic Products Processing Tec
Application Of Radio Frequency Heating In Food Industry, Li Yulin, Jiao Yang, Wang Yifen
Food and Machinery
The radio frequency (RF) heating is a novel technology in food industry which has the advantages of fast and volumetric heating. The potential application of the radio frequency technology has been gradually developed in many fields including food drying, sterilization/pasteurization, dis-infestation, thawing and etc. However, there are still problems like non-uniform heating problem needs further research. It was reviewed the fundamentals, applications, and mathematical modeling techniques of radio frequency heating processes in this study, and the future research needs of it were also prospected.
Research Progress On Extraction Technology Of Active Components From Corn Bran,
2017
Department of Chemistry, Xinzhou Teachers University, Xinzhou, Shanxi 034000, China
Research Progress On Extraction Technology Of Active Components From Corn Bran, Zhao Erlao, Wang Minghua, Gao Ziyi, Zhao Sanhu
Food and Machinery
Corn bran was the major byproducts of corn processing, which contained a variety of functional and active components. Based on the literature learning method and summarization, the Chinese research progresses on the extraction technology of corn bran active components in recent ten years were reviewed in this article. The research prospect of the corn bran active components had also been presented, which provided a reference for its overall and further research and development.
Structure And Properties Of Acetylated Corn Starch Prepared Under Ultra High Pressure (Uhp),
2017
School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an, Shaanxi 710021, China
Structure And Properties Of Acetylated Corn Starch Prepared Under Ultra High Pressure (Uhp), Pu Huayin, Ma Yun, Huang Meng, Xu Yao, Fan Fan, Liu Shuhan, Huang Junrong
Food and Machinery
The acetylated starches from corn were prepared under ultra high pressure (UHP) by acetic anhydride as reaction reagent, and NaCl as the reaction medium. The structure and properties of acetylated starches were analyzed by using light microscope, X-ray diffractometer and rapid viscosity analyzer. The results indicated that the granular acetylated starch showed a similar crystallite structure as that of native starch. In addition, the acetylated starches were gelatinized when treated at 600 MPa and the structure of starch granules was gradually destroyed, whereas the crystal structure was transformed from the A-type crystallite to the V-type crystallite. However the gelatinization negatively …
The Analysis And Evaluation Of Nutrients Of Sansui’S Characteristic Sheldrake Duck Eggs,
2017
Guizhou Provincial Key Laboratory of Fermentation Engineering and Biopharmacy, Guizhou University, Guiyang, Guizhou 550025, China; School of Liquor and Food Engineering, Guizhou University, Guiyang, Guizhou 550025, China
The Analysis And Evaluation Of Nutrients Of Sansui’S Characteristic Sheldrake Duck Eggs, Shen Changxuan, Wang Xiujun, Huang Shan
Food and Machinery
The eggs of Sansui’s characteristic sheldrake duck were researched to enrich its foundation and deepen the objective evaluation. Moisture content, crude protein content, amino acid composition and its content, crude fat content, composition and content of fatty acids, cholesterol content and the content of calcium, zinc, magnesium, iron, copper, manganese, lead and selenium of 3 kinds of egg samples in Guizhou were determined by the methods of China national standard, chromatography of gases, Inductively coupled plasma atomic emission spectrometry and spectrofluorimetry. Amino acid and fatty acids were scientifically evaluated by the method WHO/FAO Amino Acid Scoring Model, the chemical score …
Study On Impact Characteristics Of Rubber Seeds,
2017
Institute of Electrical and Mechanical Engineering, Hainan University, Haikou, Hainan 570228, China
Study On Impact Characteristics Of Rubber Seeds, Li Zihao, Wang Tao
Food and Machinery
It is an important method to break rubber seeds with the principle of collision. In order to study the breaking mechanics of rubber seeds in the collision process, the instantaneous impact force of rubber seeds was measured by RFP data acquisition system. In this experiment, single factor method was adopted to select the height, angle and initial velocity factors to analyze the influence of various factors on the impact force of rubber seeds. The experimental results showed that (the perspective of the range is 0° to 90°) : When height increased from 0.5 m to 2.0 m, the collision force …
