Identification And Variation Of Flavonoid Content Of Semen Astragali Complanati Wine In The Brewing Process,
2018
College of Sports, Shaanxi Normal University, Xi’an, Shaanxi 710062, China;School of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an, Shaanxi 710062, China
Identification And Variation Of Flavonoid Content Of Semen Astragali Complanati Wine In The Brewing Process, Fan Xuehui, Zhang Qingan, Tian Chengrui
Food and Machinery
Purpose: The total flavonoids content was determined by the colorimetric method of NaNO2-Al(NO3)3, and the changes of the contents of five kinds of flavonoids were detected by the high performance liquid chromatography (HPLC) to study on the content of flavonoids in the brewing process of the different processing of the semen astragali complanati, which provided an important reference for the brewing and quality control. Results: The contents of other flavonoids in semen A complanati showed a increase trend in the beginning, then followed by a decrease, which was consistent with the changing trend of …
The Effect Of Yeast On The Organic Acids Of Fig Wine,
2018
College of Food Science, Sichuan Agricultural University, Yaan, Sichuan 625014, China
The Effect Of Yeast On The Organic Acids Of Fig Wine, Jiang Cheng, Chen Anjun, Fu Yunyun, Chen Jie, Liu Xingyan, Hou Xiaoyan, Shen Guanghui, Zhang Zhiqing
Food and Machinery
The effect of fermentation with different yeast on the organic acids of fig wine was investigated. Five different commercial yeast were used in this test, and the content of organic acids in fig wine and juice was determined. Moreover, the relationship between quality of fig wine fermented by different yeast and the organic acid was investigated through the PCA analysis. The results showed that, content of total organic acid, including acetic acid, succinic acid, citric acid, maleic acid in fig wine fermented by five different yeast raised. The contents of acetic acid and succinic acid in wine fermented by D254 …
Freshness Detection Of Fresh Rice Noodles Based On Electronic Nose,
2018
School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha, Hunan 410114, China
Freshness Detection Of Fresh Rice Noodles Based On Electronic Nose, Zhu Hong, Guo Yubo, Yi Cuiping, Wu Suxi, Mei Xiaodi
Food and Machinery
Flavor of fresh rice noodles at different temperature were detected during 0～30 h storage through electronic nose to evaluate the freshness of fresh rice noodles, verified by total plate count and sensory evaluation by electronic nose. Results: The freshness of fresh rice noodles worsen with the storage temperature rise and time extension. At 4 ℃, there was no significant change in flavor of fresh rice noodles, the fresh rice noodles could maintain freshness for more than 30 h. At 25 ℃ and 37 ℃, respectively, the fresh rice noodles with peculiar smell at 24 h and 18 h. Response values …
Fast Examination Of Total Colony Numbers In Electronic Cigarette Liquids Based On Adenosine Triphosphate (Atp) Bioluminescence Method,
2018
China Tobacco Henan Industrial Co., Ltd., Zhengzhou, Henan 450001, China
Fast Examination Of Total Colony Numbers In Electronic Cigarette Liquids Based On Adenosine Triphosphate (Atp) Bioluminescence Method, Zhang Tingting, Feng Yingjie, Yang Zongcan, Liu Xiangzhen, Hao Hui, Zhang Dongyu, Zhu Qi, Zhang Zhan
Food and Machinery
In order to fast evaluate the hygiene situation of electronic cigarette liquids, the fast examination of total colony numbers in electronic cigarette liquids has been achieved which was based on the adenosine triphosphate (ATP) bioluminescence method.The method has been optimized, and the examination results of total colony by ATP method was compared with the results by National standard microbial detection method . Results showed: (1) the optimal temperature for ATP examination was 25 ℃, optimal time for bioluminescence reaction was 30 s, the detection limit of ATP was 2.36 × 10-12 mol/L, RSD was 3.5%～8.2%, and the sample recovery …
Extraction Optimization, Purification And Characterization Of Polysaccharide From The Roots Of Radix Tetrastigma,
2018
State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China
Extraction Optimization, Purification And Characterization Of Polysaccharide From The Roots Of Radix Tetrastigma, Guo Nansheng, Jiang Hedong, Zhang Bing, Deng Zeyuan, Cai Hong
Food and Machinery
The polysaccharide from from roots of Radix Tetrastigma were extracted by water bath, and the yield of polysaccharide was determined by response surface methodology. Based on the single factor test, The optimum conditions were as followed: temperature 96 ℃, ratio of water to liquid 34∶1 （mL/g）, extraction time 2 h. Under the conditions, the yield of polysaccharide was (21.23±0.77)%. After deprotein with sevage method, fractionated and purified by DEAE-Cellulose 52 anion exchange column and Sepharose CL-4B gel fltration column, successively . The purifed polysaccharide was designated as RTP-3-1 and its components, molecular weight, primary structure and domains were identified by …
Optimization Of Polysaccharide Extraction Process From Morinda Officinalis How And Its Biological Activity In Vitro And In Vivo,
2018
Department of Public Infrastructure，Zhaoqing Medical College， Zhaoqing, Guangdong, 526020, China
Optimization Of Polysaccharide Extraction Process From Morinda Officinalis How And Its Biological Activity In Vitro And In Vivo, Liang Xiaojun, Wei Bingdun, Chen Qian, Ma Jinkui, Li Ke, Huang Xiaochen
Food and Machinery
Morinda officinalis polysaccharide is an important bioactive substance, in terms of its anti-depression, immune enhancement, anti-viral and anti-tumor effects, and polysaccharide holds great potential in function food and drug development. In this study, the Box-Behnken design principle and one-factor-at-a-time experiments were employed to optimize the extraction parameters of polysaccharide from Morinda officinalis How in Deqing area, Guangdong province. The in vitro antioxidant activities of extracted polysaccharides were also investigated. The results showed that the optimal extraction conditions were as follows: extraction time was 2 h, extraction times was 3, and solid-liquid ratio was 1∶11 （g/mL）. Under the control of these …
Optimization Of Fermentation Process For Exopolysaccharides Production Of Weissella Cibaria Sj-02,
2018
College of Food Science, Sichuan Agricultural University, Yaan, Sichuan 625014, China
Optimization Of Fermentation Process For Exopolysaccharides Production Of Weissella Cibaria Sj-02, Chen Yuan, Jia Sisi, Hu Lu, Wang Boyang, Liu Shuliang
Food and Machinery
Response surface methodology was used to optimize the components of fermentation medium and the fermentation conditions affecting the exopolysaccharides (EPS) production of Weisssella cinerea SJ-02. Taking EPS production as an index, the effects of carbon sources and nitrogen sources in the medium on the yield of exopolysaccharides were explored. The results showed that using MRS as basal medium, keeping its 2% glucose and replacing peptone with 1.5% soy peptone increased the EPS production of strain SJ-02. The Box-Behnken central combination design was used to study the effects of exopolysaccharides production. The optimal fermentation conditions were as follows: inoculation amount 3.00%, …
The Effect Of Destoning And Enzymatic Pretreatments On The Biofuel Production From Olive Cake,
2018
California Polytechnic State University, San Luis Obispo
The Effect Of Destoning And Enzymatic Pretreatments On The Biofuel Production From Olive Cake, Patrick Tai
Master's Theses
More than 16,000 tons of olive cake was produced in the United States in 2017. Olive cake is a by-product of olive oil extraction, which has limited animal feed potential, and poses an environmental threat when landfilled due to its high organic load and polyphenol content. This residue has potential for biofuel (bioethanol and biomethane) production because it is rich in polysaccharides such as pectin, hemicellulose, and cellulose. Yet, olive cake contains olive stones that can impede its conversion to biofuel. Therefore, two methods of destoning, centrifugation and screening by horizontal screw press, were first compared. Both methods removed an …
Structural Characteristics Of Millet Glutenin And Gliadin,
2018
National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
Structural Characteristics Of Millet Glutenin And Gliadin, Ji Zhongwei, Dai Tiantian, Mao Jian
Food and Machinery
Millet glutenin and gliadin was obtained by alkali extraction and acid precipitation and millet gliadin was distracted by ethanol. Then their structural characteristics were analyzed. SDS-PAGE electrophoresis results showed that the molecular weight of the millet gliadin was small, while millet glutenin was distributed from high molecular weight to low molecular weight. Furthermore, the XRD analysis showed that both the two kinds of proteins were amorphous structures. The secondary structure was measured by circular dichroism. Millet gliadin belonged to all alpha structure, and its order was better than that of millet alkali soluble protein. Moreover, by atomic force microscopy analysis, …
Effect Of Intermolecular Interaction On Gel Formation Of Preserved Egg Yolk,
2018
College of Food Science and Technology, South China Agricultural University, Guangzhou, Guangdong 510642, China; Livestock and Poultry Product Precision Processing and Safety Research Center, Guangzhou, Guangdong 510642, China
Effect Of Intermolecular Interaction On Gel Formation Of Preserved Egg Yolk, Ai Minmin, Tan Gting, Jiang Aimin, Yang Yijia, You Yuting
Food and Machinery
The preserved eggs were processed by immersion method. The effect of internal interactions on the formation of egg yolk gel during salting and ageing were determined by fluorescence spectrophotometer and FTIR et al. The sum of α-helical and β-turn of the secondary structure of the exterior egg yolk protein decreased by 54.71% under strong alkaline environment, with the surface hydrophobicity decreased significantly (P＜0.05), and the dramatic increase of ion bonds and disulfide bonds promoted the egg yolk proteins to form a gel. The sum of α-helical and β-turn of the secondary structure of the interior egg yolk protein increased by …
Measurement Of Grain Physical Properties Based On Multi-Dimensional Unsteady Thermal Conduction Product Method,
2018
College of Mechanical Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China;Mining Engineering Postdoctoral Researchers Flow Station, Huainan, Anhui 232001, China
Measurement Of Grain Physical Properties Based On Multi-Dimensional Unsteady Thermal Conduction Product Method, Chen Qinghua, Su Guoyong, Sun Meihua, Jiang Kuosheng, Liu Ping
Food and Machinery
Formed constant temperature boundary with constant temperature bath and combined with the brass short cylindrical sample box, the formation of multi-dimensional heat flow is guaranteed in the test sample. The unsteady thermal conductivity multiplication method and parameter estimation method were used to calculate the thermal conductivity and specific heat capacity of grain. At the same time, considering the effect of opening holes on the thermostat, and increasing the difficulty of experimental operation, the ZigBee wireless data acquisition module is used for signal acquisition and transmission. By analyzing the thermophysical parameter sensitivity analysis of corn and paddy, the sensitivity coefficient of …
Analysis Of Chemical Ingredients Changes And Aroma Compounds In Brewing Process Of Mulberry Wine,
2018
School of Modern Agriculture and Biotechnology, Ankang University, Ankang, Shaanxi 725000, China; The Key Sericultual Laboratory, Ankang, Shaanxi 725000, China
Analysis Of Chemical Ingredients Changes And Aroma Compounds In Brewing Process Of Mulberry Wine, Yang Fang, Liu Tie, Liu Yan, Wang Sha, Wang Danhong
Food and Machinery
To analyse the variation of reducing sugar, total acid, total flavonoids, ethanol content and aroma compounds in brewing process of mulberry wine. The fermentation processes were: fermentation temperature of 15.3 ℃, inoculation quantity of 8.00 g/L, sucrose content of 12.80 g/100 g, total fermentation time 24 days, and sampling every 3 days to determine reducing sugar, total acid, total flavonoids, and ethanol content of mulberry wine. The aroma components were determined by gas chromatography-mass spectrometry. Results: The reducing sugar in mulberry wine decreased quickly at the first nine days and levelled off. The total acid content were steady between 5~6 …
Effect Of Cooking Methods On The Quality And Nutritive Contents Of Pork,
2018
College of Animal Science, Southwest University, Chongqing 402460, China
Effect Of Cooking Methods On The Quality And Nutritive Contents Of Pork, Zhang Jie, He Hang, Xiong Zibiao
Food and Machinery
The effects were andyzed, including different various methods (steaming, boiling, frying and baking) on meat quality, routine nutrient composition, amino acid and fatty acid content of pork. The results showed that the pH value and water content after cooking were significantly lower than those of fresh control (P＜0.05), while, the hardness, elasticity, adhesion, ash, crude protein and PUFA content were significantly increased (P＜0.05). The cooking loss rate of frying and microwave was significantly higher than that of steaming, boiling and baking (P＜0.05). The ash content of boiling have no significant change (P＞0.05), while the other cooking methods were significantly increased …
Aptamer-Based Colorimetric Detection Of Cd2+,
2018
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
Aptamer-Based Colorimetric Detection Of Cd2+, Zhao Xu, Wu Shijia, Yue Lin, Wang Zhouping
Food and Machinery
In this study, we presented a simple, rapid and sensitive colorimetric assay for the detection of cadmium (Cd) based on enzyme-linked oligonucleotides. The specific binding of aptamer to Cd2+ led to the decrease of horseradish peroxidase(HRP) on the microtiter plate, since HRP could not be bind onto through the hybridization of the aptamer and complementary DNA strand. It resulted in the change of characteristic peaks at 450 nm, helping to quantitatively detect Cd2+. Under the optimal conditions, the detection limit could be as low as 0.05 ng/mL, and the linear response for Cd2+ in a concentration …
Isolation,Identification,Multilocus Sequence Typing Analysis And Antimicrobial Resistance Of Campylobacter Jejuni Isolated From Commercial Chicken In Northeast China,
2018
College of Food and Biological Engineering, Henan University of Science and Technology, Luoyang, Henan 471023, China
Isolation,Identification,Multilocus Sequence Typing Analysis And Antimicrobial Resistance Of Campylobacter Jejuni Isolated From Commercial Chicken In Northeast China, Fei Peng, Zhao Shengjuan, Jiang Yichao, Jiang Yan, Liu Lili, Xiao Feng, Zhang Huiyun, Tang Haoguo, Kang Huaibin
Food and Machinery
In order to reveal the contamination, population characteristics and antimicrobial resistance of Campylobacter jejuni isolated from commercial chicken in Northeast China, 1 000 chicken samples were collected from the Northeast China. C. jejuni was isolated and identified.The genetic diversity of C. jejuni was analyzed by multilocus sequence typing (MLST). The antimicrobial resistance of C. jejuni to 8 antibiotics was detected by K-B AGAR diffusion method. The results indicated that 62 C. jejuni strains were isolated from 1 000 chicken samples with a contamination rate of 6.2%, and were divided into 14 sequence types (STs). Among them, ST1 and ST5 were …
Mining Of Serotype Specific Genes And Establishment Of A Pcr For Detection Salmonella Enterica Serovar Heidelberg,
2018
Anhui Science and Technology University, Chuzhou, Anhui 233100, China
Mining Of Serotype Specific Genes And Establishment Of A Pcr For Detection Salmonella Enterica Serovar Heidelberg, Zhai Ligong, Guo Yuanxin, Wang Junying, Wang Beibei
Food and Machinery
Salmonella enterica serovar Heidelberg,（SH）is pathogenic serotypes within Salmonella. Using BLAST and PCR validation for all CDSs of SH, four serovar-specific genes were identified including SeHA_C2639, SeHA_C2640, SeHA_C3259 and SeHA_C3258. A PCR protocol was developed by pHAm8 (350 bp) of SH-specific primer and 139-141 (284 bp) of Salmonella-specific primer and evaluated for the detection of SH. The result showed that the 55 strains of serotype of Salmonella and other common foodborne pathogens proved that the PCR assay had very good specificity for the detection of SH. The detection limit was 6.1 × 102 CFU/mL in pure culture. It was shown …
Simultaneous Determination Of Three Prohibited Substances In Fragrance Compound Through Gas Chromatography-Mass Spectrometry,
2018
Infinitus﹝China﹞ Company Ltd., Guangzhou, Guangdong 510665, China
Simultaneous Determination Of Three Prohibited Substances In Fragrance Compound Through Gas Chromatography-Mass Spectrometry, Lu Zhi
Food and Machinery
In this study, a gas chromatography-mass spectrometry (GC/MS) method was established for the determination of geranyl nitrile, 2-pentyl-2-cyclopenten-1-one and phenyl cyanide in fragrance compound, and the method was also validated. The method had good linearity (>0.990 0) with the concentration from 0.000 5 mg/mL to 0.100 0 mg/mL and low limits of detection (LOD) (<0.005 μg/mL) for these three target compounds. And the recovery was from 90% to 116% with relative standard deviation (RSD) from 4.2% to 5.4% at quality control concentration. In a word, the method met the need of trace detection, which can be used to test geranyl nitrile, 2-pentyl-2-cyclopenten-1-one and phenyl cyanide in fragrance compound. When the GC-MS method was applied to detect these three components in different pepppermint fragrance samples, none of them was detected out.
Study On Microwave Drying Based On Temperature And Power Control,
2018
Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Wuxi, Jiangsu 214122, China; School of Mechanical Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
Study On Microwave Drying Based On Temperature And Power Control, Luo Guiyi, Song Chunfang, Li Zhenfeng, Xu Wanxiu
Food and Machinery
Based on a microwave drying system，automatically and continuously regulating microwave power and temperature control, a drying model composed of three different temperature and power controls was used to investigate the potato chips. After analyzing the drying quality and energy consumption of the three drying models, a good microwave drying process for potato chips was found. The research showed that the microwave drying without temperature control was easy to overheat in the last drying stage and made the product burnt. However, the optimal temperature control effect and product quality could be obtained by combining the variable microwave power with the feedback …
Study On The Wet Preparation Of Lotus Leaf Powder And Its Grinding Kinetics In The Stirred Media Mill,
2018
School of Mechanical Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China; Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment & Technology, Wuxi, Jiangsu 214122, China
Study On The Wet Preparation Of Lotus Leaf Powder And Its Grinding Kinetics In The Stirred Media Mill, Yu Jianfeng, Zhao Jiang, Lou Qi, Liang Jie, Wang Li
Food and Machinery
The stirring medium mill was employed to prepare lotus leaf powder. The Variation of particle size of lotus leaf powder within 30 min at different stirring speeds were investigated. The grinding kinetics of the lotus leaf powder was studied using the analytical model of the crushing process. The grinding chamber shear rate distribution and the average collision energy of the grinding media were analyzed at different stirring speeds coupling CFD-DEM method. The results showed that the grinding rate of the lotus leaf powder increased with the increase of the stirring speeds in the range of 500～3 000 r/min. The fluid …
The Research And Application Of Polynomial Fitting In Cam Curve Design Of Cap Screwing Machine,
2018
Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Wuxi, Jiangsu 214122, China
The Research And Application Of Polynomial Fitting In Cam Curve Design Of Cap Screwing Machine, Wu Jia, He Xueming, He Kai, Zhang Rong
Food and Machinery
In view of the excessive local control conditions, the power of the cam curve designed by traditional polynomial interpolation method got too high to control, which was not conducive to the processing of capping machine cam. The global 5, 6 and 7 polynomial fitting methods were separately used to design the cam curve, so that it could control the power of the polynomial while satisfying the local control conditions. When the parameters of the cam curve got optimized, constructed the cam mechanism into a three-dimensional model and carried out the dynamic simulation analysis. After comparing to the kinematic and dynamic …
