Research On Performance Of Meat-Barbecue Furnace Based On Fluent Software,
2018
Wuchang Shouyi University, Wuhan, Hubei 430064, China
Research On Performance Of Meat-Barbecue Furnace Based On Fluent Software, Lu Zhongming, Xu Shenglin
Food and Machinery
To solve the problems of daily barbecue furnaces in the barbecue process, such as severe environmental pollution, great heat loss and inconvenient cleaning and carrying, the author designs a kind of portable barbecue furnace taking outdoor flat gas tank as heat source and combining infrared flameless burner with rotary barbecue grill. This paper introduces the structure and operation principles of the barbecue furnace, and uses FLUENT software to conduct a simulated analysis of the temperature field in the barbecue furnace. The results showed that the barbecue furnace has the reasonable temperature distribution in the overall structure; uniform air flow; the …
Effect Of Poly (Ε-Caprolactone) Modified Atmosphere Packaging Film On Postharvest Quality Of Spinach,
2018
College of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China
Effect Of Poly (Ε-Caprolactone) Modified Atmosphere Packaging Film On Postharvest Quality Of Spinach, Cheng Peifang, Dong Tungalag, Chun Yan, Hu Jian, Yun Xueyan
Food and Machinery
In order to investigate the fresh-keeping effect of PCL modified atmosphere packaging film on spinach. The effects of unpacked, LDPE film（control）and PCL film packaging treatments on postharvest quality of spinach during storage at 4 ℃ were studied. The results indicated that compared with the control group of unpacked both of the packaging films could improve the postharvest quality of the spinach, and PCL packaging treatment group could be better in the development of initial atmosphere suitable for the storage of spinach. Moreover, PCL film was better in delaying the increase of weight loss ratio and inhibiting the degradation of chlorophyll …
Improvement Design Of Fumigation Furnace Based On Cfd,
2018
Zhejiang Ribong Intelligent Equipment Co., Ltd, Jiaxing, Zhejiang 314006, China
Improvement Design Of Fumigation Furnace Based On Cfd, Zhang Lingling, Shen Shijia, Liu Hong
Food and Machinery
A method of improving the flow distribution within the heating chamber to enhance the fumigating effect through changing the fumigation oven structure based on the CFD technology were investigated in this study.. We established a two-dimensional and three-dimensional simulation model for the heating chamber, and the distribution of the fumigation vapor oven was compared by simulation. The results which showed that the optimized structure of the heating chamber could improve the distribution of the vapor flow field.
Study On Extraction Processof Total Flavonoids In Dandelion By Using The Compound Enzymes And Their Antioxidant Activities,
2018
Northeast Forestry University College of Forestry, Harbin, Heilongjiang 150040, China
Study On Extraction Processof Total Flavonoids In Dandelion By Using The Compound Enzymes And Their Antioxidant Activities, Zhang Zhi, Liu Yang, Yin Wenzhe, Hua Hongling, Yu Henglin, Zhang Zhijun
Food and Machinery
The effects on the yield of total flavonoids were studied by reference enzyme dosage, pH value, ratio of material to liquid, ethanol concentration, enzymolysis temperature and time. A 4 factor with 3 horizontal response surface test optimization were conducted. The optimal extraction conditions of the total flavonoids of dandelion were as follows: 122 (g/mL), pH 4.5, 52% ethanol concentr-ation, the hydrolysis temperature was 51 ℃. Under these condi-tions, the yield of total flavonoids was 15.09 mg/g. The results of in vitro functional experiments showed that the total flavonoids extract of dandelion had strong antioxidant activity and scavenging ability against free …
Prediction Model Of Microbial Growth Based On Neural Network,
2018
College of Information Engineering, Shanghai Maritime University, Shanghai 201306, China
Prediction Model Of Microbial Growth Based On Neural Network, Hou Qi, Liu Jing, Guan Xiao
Food and Machinery
Most of the existing predictive models are empirical models which contain too many parameters without biological explanations. In this study, a non-empirical growth prediction model based on neural network was proposed. A BP neural network secondary growth model was established by using Listeria monocytogenes as an example, using the temperature, pH value and Aw value of the experimental environment. The growth rate and double time of microbes were fitted in different environments. Subsequently, combining with the initial concentration of microorganisms, the primary model of microorganism growth with time was predicted. Finally, the growth data of Listeria monocytogenes were tested, and …
Purification Technology Of Flavones From Vaccinium Bracteatum Thunb Leaves Using Macroporous Resin,
2018
School of Chemistry & Chemical Engineering, Suzhou University, Suzhou, Anhui 234000, China; Fine Chemical Product Development Research Institute, Suzhou University, Suzhou, Anhui 234000, China
Purification Technology Of Flavones From Vaccinium Bracteatum Thunb Leaves Using Macroporous Resin, Zhang Dejin, Chen Yiyong, Hu Yalin, Liu Xiang
Food and Machinery
In order to purify flavones from Vaccinium Bracteatum Thunb Leaves(VBTL) preliminarily, the static adsorption and desorption properties of four resins were compared. The purification technology of flavones from VBTL was investigated by dynamic adsorption and desorption experiments. The effect of sample concentration, loading sample volume, ethanol solution for desorption, flow rate of the eluent and volume of eluent on adsorption and desorption rate were studied. In addition, the purification effect was evaluated by removal rate of proteins and polysaccharides and HPLC. The results showed that NKA-II resin had a relatively high rate of adsorption and desorption as well as a …
Study On Microwave-Assisted Extraction Process For Polysaccharide From The Branches And Leaves In Chrysanthemum Indicum And Its Anti-Oxidant Activity,
2018
Shaanxi Key Laboratory for Catalysis, Shaanxi University of Technology, Hanzhong, Shaanxi 723000, China
Study On Microwave-Assisted Extraction Process For Polysaccharide From The Branches And Leaves In Chrysanthemum Indicum And Its Anti-Oxidant Activity, Liu Cunfang, Wu Rui, Zhao Hua, Tian Guanghui
Food and Machinery
The polysaccharide obtained from the branches and leaves of Chrysanthemum indicum was extracted by microwave assisted extraction after its powders decolorized and degreased, and then the polysaccharide extraction content was determined by phenol-sulfuric acid method. The extraction process of the polysaccharide was studied by single factor experiment which controlled liquid-solid ratio, extraction temperature, extraction time, and microwave power, and the orthogonal experiment was tested and based on single factor experiment, then determined the best extraction process. Those free radical cleared effects of its polysaccharide were tested by Fenton reaction and DPPH reaction. The results showed that the polysaccharide extraction content …
Study On Effect Of Different Storage Temperatures On Ipomoea Aquatica,
2018
College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; Shanghai Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation, Shanghai 201306, China
Study On Effect Of Different Storage Temperatures On Ipomoea Aquatica, Yang Chong, Xie Jing
Food and Machinery
The preservation effects of different storage temperatures (0，5，10，15 ℃) on ipomoea aquatica was studied on sensory evaluation, vitamin C, water migration by low-field nuclear magnetic resonance (LF-NMR) technique, etc.. The results show that the chilling injury happened easily under 0 ℃ cold store and senescence accelerated under 15 ℃. Under 5 ℃ and 10 ℃, the sensory quality, the content of chlorophyll, vitamin Cand other quality indexes of ipomoea aquaticawere maintained relatively well, and the quality above all maintained well for 8 d storage. Under 5 ℃, chilling injury happened at later storage (the tenth days later) and the quality …
Extract Of Volatile Oil And Antibacterial & Insecticidal Activity Of Large Red Algae Gracilaria Lemaneiformis,
2018
College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266000, China
Extract Of Volatile Oil And Antibacterial & Insecticidal Activity Of Large Red Algae Gracilaria Lemaneiformis, Wang Guorui, Pang Jinlong, Zhang Demeng, Li Fang
Food and Machinery
The volatile oil of Gracilaria lemaneiformis was extracted by direct steam distillation and solvent extraction-steam distillation, meanwhile gas chromatography-mass spectrometry (GC-MS) and antibacterial & insecticidal activity were conducted. The GC-MS showed that compared with direct steam distillation extraction, in solvent extraction-steam distillation extraction the relative content of aldehyde compounds which has lower odor threshold is 0.20%, meanwhile the relative content of carboxylic acid and ester is 21.54% in solvent extraction-steam and distillation extraction. The antibacterial activity of volatile oil on 5 kinds of pathogens （Escherichia coli O157, Staphylococcus aureus, Salmonella enterica, Listeria monocytogenes, Vibrio parahemolyticus） is moderate, and the median …
Extraction And Antioxidant Activity Of Ursolic Acid From Amygdalus Communis L. Peel,
2018
Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology, Urumqi, Xinjiang 830054, China; Key Laboratory of Plant Stress Biology in Arid Land, Xinjiang Normal University, Urumqi, Xinjiang 830054, China; College of Life Sciences, Xinj
Extraction And Antioxidant Activity Of Ursolic Acid From Amygdalus Communis L. Peel, Zhang Jun, Li Jin, Lu Haiying, Ma Xue
Food and Machinery
Based on the results of single-factor experiments, orthogonal test of ursolic acid from Amygdalus communis L. peel were carried out to determine the optimum process parameters.The antioxidant activities were evaluated by the reducing power, DPPH free radical, hydroxyl free radical and hemolysis of mice red blood cells.The optimum extraction parameters were determined as follows: alcohol concentration 65%,extraction temperature 80 ℃; solid-to-solvent ratio 120 (g/mL); extraction time 1.5 h. Under these conditions, the experimental yield of ursolic acid was 2.89%. The concentration of ursolic acid was 0.1 mg/ml, ursolic acid of Amygdalus communis L. peel displayed a strong antioxidant activity, the …
Study On Isolation, Structure Characterization And Radical Scavenging Activity Of Cyanobacteria Polysaccharide,
2018
Key Laboratory of Carbohydrate Chemistry and Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu 214122, China
Study On Isolation, Structure Characterization And Radical Scavenging Activity Of Cyanobacteria Polysaccharide, Huang Yijia, Wu Jianrong, Zhu Li, Zhan Xiaobei
Food and Machinery
An effective method to extract Cyanobacteria polysaccha-ride was established in this study and a high yield of polysaccharide (25.1%) was achieved by optimizing extraction condition (hot water with ultrasonic treatment). After purification, a main purified polysaccharide (CB-2-1) with molecular weight of 8.4 kDa was collected and the compositions included rhamnose, arabinose, xylose, mannose, glucose and galactose, with mole percentages of 0.51%, 13.35%, 18.21%, 51.38%, 4.87% and 11.67%, respectively. The results of NMR showed that the CB-2-1 component of cyanobacteria polysaccharide was mainly α-type glycosidic bond. Moreover, the purified CB-2-1 polysaccharide had great anti-oxidant activities. The highest scavenging activities of DPPH …
Advances In Microbial Conversion And Utilization Of Distiller Grains,
2018
School of Animal Science and Technology, Northeast Agricultural University, Harbin,Heilongjiang 150030, China
Advances In Microbial Conversion And Utilization Of Distiller Grains, Gao Mingkun, Wen Guangyu, Qian Fang
Food and Machinery
The application of microbial conversion in the use of distiller grain is the by-products of the production of solid white liquor, which has become increasingly prominent. Themicrobial in detoxifying distiller grains, production of high added value feed and feed additive in recently years, especially the effect of it application in animal feed were reviewed. Moreover, a prospect of application of microbial technology in the transformation of distiller grains.
Analysis Of Themain Organic Acids And The Production Of Vinegar From Defective Fresh Jujube Fruits By Batch And Semi-Continuous Fermentation,
2018
College of Food and Bioengineering, Henan University of Science and Technology, Luoyang，Henan 471023, China;Henan Engineering Research Center of Food Material, Luoyang，Henan 471023, China;Luoyang Engineering and Technology Research Center of Microbial Fer
Analysis Of Themain Organic Acids And The Production Of Vinegar From Defective Fresh Jujube Fruits By Batch And Semi-Continuous Fermentation, Xiang Jinle, Guan Suixia, Ma Liping, Ren Guangyue, Yuan Yunxia, Kang Huaibin
Food and Machinery
In order to utilize defective fresh Jujube fruits, Jujube vinegar was explored by crushing, pulping, alcohol fermentation, batch and semi-continuous acetic fermentation. The fresh Jujube fruits were cleaned, washed, and then crushed and pulped with addition of water to 1.5 times. The Jujube pulp was inoculated Angel fruit wine yeast with inoculation quantity 0.1%. After fermentation 72 h at the room temperature, the alcohol concentration of Jujube wine could reach 8.07%Vol. Then Jujube wine was inoculated with the inoculum size of acetic acid bacteria 10%, and the first batch of acetic fermentation finished in 60 h. In the next acetic …
Optimization On Dry-Cured Process Of Sansui Plasma Duck Of Guizhou,
2018
Guizhou Province Key Laboratory of Fermentation Engineering and Biopharmacy, Guiyang, Guizhou 550025, China; College of Liquor Making and Food Engineering, Guizhou University, Guiyang, Guizhou 550025, China
Optimization On Dry-Cured Process Of Sansui Plasma Duck Of Guizhou, Gao Xiaohong, Wang Xiujun, Tian Duo
Food and Machinery
In order to improve the production technology system and the product quality. Using the Sansui duck as raw material, the effects of pre-cooking time, curing time, salt concentration and cooking wine concentration on the comprehensive quality of duck meat were studied, and the dry-cured process of Sansui plasma duck was optimize. The results showed that Sansui plasma duck optimum parameters of dry-cured process in were obtained: pre-cooking time 2.4 min, curing time 39.0 min, salt concentration 3.0% and cooking wine concentration of 2.9%. Under this condition, the duck meat has moisted surface, color goldenand uniform, special duck fragrance, and its …
Effects Of Oxygen Vectors On Microbial Production Of Avilamycin,
2018
School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, Shandong 255000, China; Key Laboratory of Technologies for Functional Agricultural Products in Universities of Shandong, Zibo, Shandong 255000, China
Effects Of Oxygen Vectors On Microbial Production Of Avilamycin, Zhang Mei, Song Yuanda, Liu Qing, Wang Youling, Wu Han
Food and Machinery
In order to improve oxygen delivery efficiency and dissolved oxygen levels for the production of avilamycin in the fermentation broth, the effects were studied, including the various oxygen carriers on the synthesis of avilamycin and the growth of Streptomyces viridochromogenes. The results showed that Tween-80 was the most effective vector to promote growth and the ability of Streptomyces viridochromogene to produce avilamycin.With the addition of 3 g/L tween at 8 h fermentation ,the biomass reached 11.82 g/L and the avilamycin titer increased to 340 mg/L, which was 20.63% and 21.42% higher than the control group. Result show that the oxygen …
Antioxidant And Uv-Induced Fibroblasts Photoaging Repair Effects Of Polyphenol From Cortex Mori,
2018
College of Life and Environment Science, Huangshan University, Huangshan, Anhui 245041, China
Antioxidant And Uv-Induced Fibroblasts Photoaging Repair Effects Of Polyphenol From Cortex Mori, Wu Yongxiang, Wu Liping, Wang Weidong, Kim Taewan
Food and Machinery
The antioxidant activity of polyphenol from Cortex Mori (CMP) was examined by 2,2’-azinobis-(3-ethylbenzthiazoline-6-sulphonate (ABTS) and 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging assays. Fibroblasts HS68 cells were induced by ultraviolet (UV) irradiation to establish the photoaging model. Cell proliferation was investigated using a methyl thiazolyl tetrazolium (MTT) assay. The content of procollagen typeⅠprotein (PIP) in cells was measured by enzyme-linked immunosorbent assay (ELISA). The matrix metalloproteinase-1 (MMP-1) and PIP mRNA expressi-ons were detected by qRT-PCR. CMP exhibited significant antioxi-dant activity in ABTS, DPPH free radical scavenging assays, with IC50 values of 1.49, 8.94 μg/mL, respectively. The IC50 values of butyl …
Enhancement Of Docosahexaenoic Acid Production In Schizochytrium Sp. 31 Combining Ethylmethylsulfone And Atmospheric And Room Temperature Plasma Treatment,
2018
The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu 214122, China
Enhancement Of Docosahexaenoic Acid Production In Schizochytrium Sp. 31 Combining Ethylmethylsulfone And Atmospheric And Room Temperature Plasma Treatment, Zhao Ben, Wang Wu, Li Changling, Yang Hailin
Food and Machinery
For establishing an efficient and stable mutagenesis method on breeding Schizochytrium DHA higher producers, the wild-type strain named Schizochytrium sp. 31 was mutated combining Ethylmethylsulfone (EMS) and Atmospheric and Room Temperature Plasma (ARTP) treatment. Mutagenic efficiency, fermentation indexes of the mutants were compared and analyzed. Under this compound mutagenesis method, the positive mutation rate reached 32.2%, which was much higher than that under other two single-factor mutagenesis methods. Besides, DHA production and DHA percentage in total fatty acids reached to 7.2 g/L and 43.2%, which were 35.6% and 19.2% higher than that of the wild-type strain, respectively. After five rounds …
Determination Of 45 Elements In Yingde Black Tea By Icp-Ms,
2018
Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou, Guangdong 510650, China; Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Institute of Analysis, Guangzhou, Guangdong 510070, China; Universi
Determination Of 45 Elements In Yingde Black Tea By Icp-Ms, Zhang Xiancai, Zhang Chunhua, Huang Xiaolan, Wu Huiqin
Food and Machinery
The inductively coupled plasma mass spectrometry (ICP-MS) combined with microwave digestion was employed in this study for the determination of forty five elements in Yingde black tea. The results showed that 45 elements had good linearity and correlation coefficients all greater than 0.999 5. The limits of detection (LODs) were ranged from 0.000 1 to 20.090 0 μg/L. The recovery rates were between 82.58% and 119.19% with the relative standard deviations (RSDs) of 0.20%～7.03%. The RSD of all the elements except Sb was 0.15%～9.14% in precision experiments. The method was validated by standard reference material (GBW10083), the determination values of …
Establishment Of Hplc Method For Anthocyanins Determination Of Purple Bud Tea Tree,
2018
Key Lab of Tea Science of Ministry of Education, Changsha, Hunan 410128, China; National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Changsha, Hunan 410128,China
Establishment Of Hplc Method For Anthocyanins Determination Of Purple Bud Tea Tree, Liu Lingfeng, Zhou Yang, Lin Ling, Xiao Wenjun, Gong Zhihua
Food and Machinery
The purple bud tea zijuan,zixuan9803,Hongyafoshou an An73 shoots were used as research objects. Using three plant anthocyanins as external standards,a HPLC method for simultanteous detection of various anthocyanins in purple bud tea tree was established. That is: after been extracted with 80% ethanol and refluxed, the tea is degreased with a volume ratio of 112 mixture of n-hexane:ethyl acetate:water. A C18 column was used with acetonitrile and 0.2% phosphoric acid ultra-pure water as the mobile phase. Gradient,the organic phase elution gradient: 0～55 min, 10%～40%, flow rate 0.8 mL/min, column temperature 30 ℃, detection wavelength 520 nm. Each anthocyanins can …
Particle Mixed Behavior Research Based On Dem,
2018
College of Mechanical and Electrical Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
Particle Mixed Behavior Research Based On Dem, Zhang Kaijie, Xu Qiang, Wang Tao
Food and Machinery
In order to study particle rotary motion behavior and its mixing effect, five kinds of different speeds and fitted the mathematical model of particle mixing data applying to EDEM and MATLAB were stimulatedwith the model of Rotary mixing equipment and based on the theory of DEM simulated the. The virtual experiments predicted the best speed. The results showed that the virtual experiments not only could research particle cyclotron motion characteristics of the curve distribution, but also the method of DEM was conducive to study the mixing mechanism. Compared with the five speeds, the degree of mixing was 62.27%, closed to …
