Effect Of Mixed Bacterial Fermentation On The Quality Of Salt-Free Sauerkraut,
2023
Biological Engineering, Shandong Polytechnic, Jinan, Shandong 250104, China
Effect Of Mixed Bacterial Fermentation On The Quality Of Salt-Free Sauerkraut, Su Jing-Hong, Wu Bin
Food and Machinery
Objective: To use lactic acid bacteria to ferment salt-free sauerkraut. Methods: By considering the fermentation characteristics and bacterial inhibition capacity of the strains, lactic acid bacteria with high acid production capacity and bacterial inhibition capacity were selected to make a mixed ferment. Then, the fermentation process was optimized using single-factor tests and response surface tests. Results: Lactobacillus plantarum and Lactobacillus acidophilus were selected as the fermenting strains with high growth activity, acid production capacity and bacterial inhibition capacity, and fermented at 30 ℃. The colour and odour of the sauerkraut prepared under this process condition was good and the organoleptic …
Effects Of Exogenous Additives And Auxiliary Processing Techniques On Temperature Scanning In Dynamic Rheology Ofsurimi Gel,
2023
College of Food Sciences and Technology, Shanghai Ocean University, Shanghai 201306, China
Effects Of Exogenous Additives And Auxiliary Processing Techniques On Temperature Scanning In Dynamic Rheology Ofsurimi Gel, Chen Ting-Ting, Guo Quan-You, Bao Hai-Rong
Food and Machinery
The effects of different exogenous additives and new auxiliary processing technologies on the energy storage and loss modulus of surimi gel process were reviewed. From the perspective of dynamic rheology, the formation mechanism of surimi gel was expounded, and the potential of auxiliary processing technologies and new external additives in improving surimi gel properties and texture of low-salt surimi products was prospected.
Application Of Flow Cytometry In Microbial Detection Of Dairy Products,
2023
State Key Laboratory of Dairy Biotechnology, Shanghai 200436, China; Shanghai Engineering Research Center of Dairy Biotechnology, Shanghai 200436, China; Dairy Research Institute, Bright Dairy and Food Co., Ltd., Shanghai 200436, China
Application Of Flow Cytometry In Microbial Detection Of Dairy Products, Qi Yan, You Chun-Ping
Food and Machinery
The principles and structures of flow cytometer, the methods and applications of flow cytometry in microbial detection of dairy products were introduced in this review, and the future research direction was prospected.
The Potential Correlation Between Bacterial Community And The Characteristic Volatile Flavour Of Traditional Fermented Fish During Solid Fermentation,
2023
Hunan Agricultural Product Processing Institute, Changsha, Hunan 410125, China
The Potential Correlation Between Bacterial Community And The Characteristic Volatile Flavour Of Traditional Fermented Fish During Solid Fermentation, Yu Mei-Juan, Yang Hui, Huang Lu-Hong, Tang Huan, Zhang Qun
Food and Machinery
Objective: This study aimed to investigate the microbial succession and the changes of volatile flavor substances in traditional fermented fish. Methods: Traditional microbial counting methods, high-throughput sequencing, gas chromatography-mass spectrometry（GC-MS） were applied to explore the effects of different fermentation times of traditional fermented fish （0~180 d） on microflora changes and the volatile flavor compounds during the processing of the solid fermentation process of traditional fermented fish as well as on the correlation between them. Results: The results showed that the main dominant bacterial genera included Staphylococcus, Lactobacillus, etc. That there were 69 volatile flavor components in fermentation process, mainly including …
Correlation Analysis Of Sensory Evaluation And Texture Characteristics Of Purple Rice Fenyuan,
2023
Food College, South China Agricultural University, Guangzhou, Guangdong 510640, China
Correlation Analysis Of Sensory Evaluation And Texture Characteristics Of Purple Rice Fenyuan, Chen Wei-Xuan, Zhuang Wan-Xian, Wu Qian-Qian, He Heng-Tao, Hu Hai-Yin, Sun Ruo-Xin, Song Xian-Liang
Food and Machinery
Objective: This study aimed to develop a new type of purple rice Fenyuan and evaluate its quality. Methods: The effects of the mass ratio of purple rice flour and cassava starch on the water absorption, cooking characteristics, texture characteristics and sensory quality of the Fenyuan were explored. The correlation between texture characteristics and sensory evaluation of purple rice Fenyuan was studied by Pearson correlation analysis. Results: When the mass ratio of purple rice flour to cassava starch was 1∶8, the water absorption rate of purple rice Fenyuan was 154.71%, and the cooking loss was 16.45%. Under the control of normal …
Physicochemical Properties Of Layered Starch Of Japonica Rice,
2023
College of Food Engineering, Harbin University of Commerce, Harbin, Heilongjiang 150028, China
Physicochemical Properties Of Layered Starch Of Japonica Rice, Zhang Chu-Jia, Jia Jian-Hui, Gao Man, Liu Ying, Dou Bo-Xin, Zhang Na
Food and Machinery
Objective: This study aimed to improve the high-value utilization of japonica starch and the comprehensive application of japonica layered starch. Methods: Japonica starch was extracted by alkaline and enzymatic methods, and the physicochemical indexes such as basic composition, solubility, swelling power and pasting characteristics of the 3 layers of starch after centrifugation were analyzed, and the structural characteristics were studied by scanning electron microscopy and infrared spectroscopy. Results: The contents of the three starch layers extracted by alkali and enzymatic methods ranged from 91% to 99%, with the highest relative proportion of the middle layer starch. The amylose content of …
Producing Area Discrimination Of Tobacco Leaves Based On Mineral Element Fingerprinting Technology,
2023
Technology Center, China Tobacco Henan Industrial Co., Ltd., Zhengzhou, Henan 450000, China
Producing Area Discrimination Of Tobacco Leaves Based On Mineral Element Fingerprinting Technology, Sun Jiu-Zhe, Tong Zhi-Jun, Li Meng, Yang Zong-Can, Xu Yong-Ming, Chen Dan, Wang Xu-Dong, Yang Jin-Chu, Zhang Ke
Food and Machinery
Objective: This paper discusses the feasibility of using mineral element fingerprinting technology of to identify tobacco producing areas, screens out the effective indicators, and constructs the discrimination model of tobacco producing areas. Methods: The contents of 20 mineral elements in tobacco leaves from 11 producing areas were simultaneously determined by ICP-MS, and the data were analyzed by variance analysis, cluster analysis, principal component analysis and discriminant analysis. Results: The contents of 16 elements were significantly different among producing areas, and principal component analysis resulted in 6 principal components, with the cumulative variance contribution of 89.253%. Using linear discriminant analysis, four …
Rapid Determination Of Sulfites By Microextraction-Ion Chromatography In Red Wine,
2023
Longkou Customs of the People's Republic of China, Longkou, Shandong 265700, China
Rapid Determination Of Sulfites By Microextraction-Ion Chromatography In Red Wine, Wang Zhi-Hong, Lu Fei, Ni Yong-Fu, Cao Peng, Zhang Hong-Wei
Food and Machinery
Objective: In view of the improvement of the national standard method of distillation pretreatment, combined with the advantages of ion chromatography, a rapid determination of sulfite by microextract-ion chromatography in red wine was established. Methods: Sulfur dioxide was released by microextraction device, which was absorbed by sodium hydroxide solution to form sulfite, and then oxidized to sulfate. The samples were then filtered by 0.45 μm filter and determined by ion chromatograph. Results: The concentration of sulfite ion in range of 1.0～50 mg/L showed a linear relationship with the peak area, with correlation coefficient of 0.999 9, and the detection limit …
Determination Of 24 Pesticide Residues In Fresh Edible Fungiby Dispersive Solid Phase Extraction-Gas Chromatography Coupled With Tandem Mass Spectrometry,
2023
Jiaying University, Meizhou, Guangdong 514087, China
Determination Of 24 Pesticide Residues In Fresh Edible Fungiby Dispersive Solid Phase Extraction-Gas Chromatography Coupled With Tandem Mass Spectrometry, Shen Xia
Food and Machinery
Objective: A gas chromatography-tandem mass spectrometry method was established for the simultaneous determination of 24 pesticide residues in fresh edible fungi. Methods: Samples were homogenized and then shaken horizontally for extraction with water, acetonitrile and salt. After high-speed centrifugation, the supernatant was removed and concentrated with nitrogen then reconstituted with ethyl acetate and finally determined by GC-MS/MS. Electron impact ionization （EI） was used for ionization, multiple reaction monitoring （MRM） mode was used to collect target fragments by multiple reaction monitoring （MRM） mode and internal standard method was used for quantitative analysis. Results: 24 pesticides showed good linearities in their respective …
Determination Of Small Molecular Peptides In Infant Formula Milk Powder By Gravimetric Method Combined With Amino Acid Analysis,
2023
Guangzhou Trusted Testing & Certification Co., Ltd., Guangzhou, Guangdong 511447, China
Determination Of Small Molecular Peptides In Infant Formula Milk Powder By Gravimetric Method Combined With Amino Acid Analysis, Huang Wei-Qian, Huo Wen-Xi, Xu Li-Zhu, He Min-Heng, Wu Jun-Fa, Zheng Xue-Yin, Luo Hao
Food and Machinery
Objective: Combined with the determination of macromolecular protein, amino acid and total protein, a quantitative analysis method for the content of small molecular peptides in infant formula milk powder was established. Methods: The contents of total protein, polymer protein and free amino acid in infant formula milk powder were determined by Kjeldahl nitrogen determination method, gravimetric method and ion exchange chromatography, and then the contents of small molecular protein peptide were calculated. Results: The precision RSD of the macromolecular protein detection (n=6) was 0.74%; The recovery rates of the 17 kinds of amino acids were 91.0%~103.2%, and the relative deviations …
Evaluation Of Uncertainty For The Determination Of Thiocyanate In Cheese By Inhibited Conductivity Ion Chromatography,
2023
Guangdong Academy of Sciences 〔China National Analytical Center, Guangzhou〕, Guangzhou, Guangdong 510070, China; Guangdong Provincial Key Laboratory of Chemical Measurement and Emergency Test Technology, Institute of Analysis, Guangzhou, Guangdong 510070, China; Guangdong Provincial Engineering Research Center for Efficacy Component Testing and Risk Substance Rapid Screening of Health Food, Guangzhou, Guangdong 510070, China
Evaluation Of Uncertainty For The Determination Of Thiocyanate In Cheese By Inhibited Conductivity Ion Chromatography, Pan Can-Sheng, Zhang Zhi-Zhou, Xia Bing, Zhang Fei, Wu Ping, Wu Ling-Tao
Food and Machinery
Objective: To evaluate the uncertainty of the determination of thiocyanate in cheese by inhibition conductance ion chromatography. Methods: The content of thiocyanate in cheese was determined by inhibition conductance ion chromatography and a mathematical model was established. The source of uncertainty introduced in the process of the experiment was described, and the synthetic uncertainty was calculated for each uncertainty component. Results: The determination of thiocyanate was （10.2±0.56） mg/kg, k=2, p=95%. Conclusion: The uncertainty in the measurement process mainly comes from the concentration of thiocyanate in the test solution, followed by sample recovery and repeatability experiments.
Effects Of Screw Arrangement In Four Screw Extruder Impact On Characteristics Of Polylactic Acid Flow Field,
2023
School of Artificial Intelligence, Beijing Technology and Business University, Beijing 100048, China; Plastic Beijing Municipal Key Laboratory of Health and Safety Quality Evalvation Technology, Beijing 100048, China
Effects Of Screw Arrangement In Four Screw Extruder Impact On Characteristics Of Polylactic Acid Flow Field, Shang Jia-Wei, Huang Zhi-Gang, Zhang Yi-Ming, Yang Ya-Nan, Dai Xiang-Ji
Food and Machinery
Objective: The flow channel distribution of polylactic acid in four screw extruder with different screw arrangement was studied. Methods: The three-dimensional modeling software Solidworks was used to establish the screw model and the corresponding fluid region model under the arrangement of one-word screw, four-square screw and encircle screw. Numerical simulation was carried out by the simulation software Polyflow. Results: The screw arrangement of monotype and surround type had better pressure building ability and distribution mixing ability than the square arrangement, and the square arrangement had weaker transport ability of polylactic acid. Conclusion: The four-screw extruder with one-line screw arrangement has …
Betel Nut Classification Algorithm Based On Improved Xception,
2023
College of Mechanical and Electrical Engineering, China Jiliang University, Hangzhou, Zhejiang 310018, China
Betel Nut Classification Algorithm Based On Improved Xception, Liu Chang-Jun, Jiao Jian-Ge, Zou Guo-Ping
Food and Machinery
Objective: In order to reduce the manual demand of betel nut classification improve the accuracy of betel nut classification and reduce the size of classification model. Methods: Expanded the input layer of Xception as the feature extraction backbone network. Added a dual-channel sequeeze and excitation module after the feature extraction network. Used the ELU activation function instead of ReLU. Used the data enhancement to expand the dataset of betel nuts, divided the dataset into training sets, validation sets and test sets in 9∶3∶1, and trained the improved Xception models. Results: When the improved Xception was used to classify 1 100 …
Traditional Festival Food's Packaging: A Display Design Research In The Context Of Cultural Confidence,
2023
Tsinghua University, Beijing 100084, China; Hunan University of Technology, Zhuzhou, Hunan 412000, China
Traditional Festival Food's Packaging: A Display Design Research In The Context Of Cultural Confidence, Zhang Yu, Chen Lei
Food and Machinery
Taking the display design research on traditional festival food's packaging as a point of penetration, this paper discusses about its display features and way of expression in the context of cultural confidence. At first, the paper analyses and summarizes traditional festival food packaging's current situation. Then, it concludes the display features of traditional festival food packaging's design throughout elucidating its concept. Finally, it probes into the packaging display design's expression way. Traditional festival food's packaging should comply with the tendency of today's aesthetic idea and the consumer development. The packaging's display design features could be started with its way of …
Evaluation Of Inhibitory Activity Of A Polyoxometallate On Polyphenol Oxidase And Its Application In The Preservation Of Litopenaeus Vannamei,
2023
Fujian Province Key Laboratory for the Development of Bioactive Material from Marine Algae, Quanzhou, Fujian 362000, China; College of Oceanology and Food Science, Quanzhou Normal University, Quanzhou, Fujian 362000, China
Evaluation Of Inhibitory Activity Of A Polyoxometallate On Polyphenol Oxidase And Its Application In The Preservation Of Litopenaeus Vannamei, Fang Jia-Qi, Han Qing, Ma Yang-Yu, Wang Fang, Li Li-Li, Li Wen-Jie, Wang Li
Food and Machinery
Objective: To design new and effective polyphenol oxidase （PPO） inhibitors and expand their application in the field of aquatic product preservation. Methods: The synthesized H8[P2Mo17Ni（OH2）O61] （P2Mo17Ni） structure was characterized by ultraviolet and infrared spectrum. The inhibitory effect, type and mechanism of P2Mo17Ni on the relative activity of mushroom PPO in vitro was clarified. Then, the preservation effects of P2Mo17Ni on Litopenaeus vannamei Boone were evaluated through studying the index change of shrimps treated with P2Mo17 …
Quality Change Of Prawn During Low-Frequency Electric Field Ice Temperature Storage,
2023
Department of Food and Environmental Engineering, Yangjiang Polytechnic, Yangjiang, Guangdong 529566, China; Guangdong Provincial Engineering and Technology Research Center of Food Low Temperature Pocessing of Guangdong Provice, Yangjiang, Guangdong 529566, China; Yangtze Delta Region Institute of Tsinghua University, Jiaxing, Zhejiang 314006, China
Quality Change Of Prawn During Low-Frequency Electric Field Ice Temperature Storage, Yu Ming, Xu Li-Juan, Chen Hai-Qing, Liang Zuan-Hao, Chen Shan-Shan, Liang Feng-Xue, Ao Fei-Fei
Food and Machinery
Objective: This study aimed to explore the feasibility of low-frequency electric field assisted controlled freezing-point storage (CFPS) technology improving the quality of shrimp. Methods: Low-frequency electric field was applied on the basis of controlled freezing-point storage (LFEF+CFPS) to preserve prawns, and the contents of malondialdehyde and salt soluble protein, as well as the changes of Ca2+-ATPase activity, pH value, shear force, color difference and protein molecular weight of prawns were monitored. Results: Compared with the conventional CFPS, the LFEF+CFPS had no significant effect on the content of malondialdehyde, salt-soluble protein, pH, shear force and color of prawn meat. …
Packaging Design Of Tanyang Congou Black Tea Based On Geographical Indication Product Protection,
2023
School of Economics and Management, Ningde Normal University, Ningde, Fujian 350002, China
Packaging Design Of Tanyang Congou Black Tea Based On Geographical Indication Product Protection, Qiu Han-Zhou
Food and Machinery
Taking the packaging design of Tanyang Gongfu Black Tea, a product protected by geographical indication, as the core content, the paper adopts the method of combining case study with data investigation to deeply interpret and refine the regional cultural characteristics of Tanyang Village, and further integrate the regional geographical and cultural factors of Tanyang Village into the design to enhance the added value and influence of the product.
Characteristics Of Freeze-Infrared Combined Drying Of Jujube Slices,
2023
College of Mechanical and Electrical Engineering, Shihezi University, Shihezi, Xinjiang 832003, China; Ministry of Agriculture in Northwest China Key Laboratory of Agricultural Equipment, Shihezi, Xinjiang 832003, China
Characteristics Of Freeze-Infrared Combined Drying Of Jujube Slices, Liu De-Cheng, Zheng Xia, Xiao Hong-Wei, Yao Xue-Dong, Shan Chun-Hui
Food and Machinery
Objective： Optimized the drying process of jujube slices and improved the product quality. Methods： Taking jujube slices as the research object, the correlation between conversion moisture content, infrared temperature and slice thickness and drying time and drying rate was studied, and the change rule of effective moisture diffusion coefficient of jujube slices in FD-IRD with conversion moisture content, infrared temperature and slice thickness was calculated, and the drying activation energy of jujube slices in FD-IRD was calculated according to the test data. Results： The lower the conversion moisture content is, the shorter the infrared drying time was. But the lower …
Effects Of Aqueous Extracts From Ficus Pumila On Pulmonary Dysfunction And Inflammation In Rats With Chronic Obstructive Pulmonary Disease,
2023
Jiangzhong Dietary Therapy Technology Co., Ltd., Jiujiang, Jiangxi 332020, China
Effects Of Aqueous Extracts From Ficus Pumila On Pulmonary Dysfunction And Inflammation In Rats With Chronic Obstructive Pulmonary Disease, Yao Mei-Xiang, Wang Cheng-Yuan, Xie Jian-Hua, Zhu Xiao-Juan, Zhou Ming, Nie Shao-Ping, Zhong Hong-Guang
Food and Machinery
Objective: The preventive and therapeutic effects of the aqueous extract of Ficus pumila on COPD model rats were observed and its mechanism was also discussed. Methods: COPD model was established by intratracheal injection of lipopolysaccharide and smoking. Using the pulmonary function test, the level of related inflammatory factors detection in the BALF by ELISA, the blood gas analysis and HE staining for lung pathological observation. Results: The results showed that the indexes of the model rats were consistent with the pathological characteristic of COPD. The model group animals had obvious airflow obstruction, while the high dose of F. pumila aqueous …
Optimization On Extraction Of Cherry Seed Oil By Aqueous Enzymatic Method And Analysis Of Its Physical-Chemical Properties,
2023
Nanchong Vocational College of Culture and Tourism, Langzhong, Sichuan 637400, China; School of Food Science， Sichuan Agricultural University， Yaan， Sichuan 625000, China
Optimization On Extraction Of Cherry Seed Oil By Aqueous Enzymatic Method And Analysis Of Its Physical-Chemical Properties, He Lin-Feng, Wang Jing, Li Li-Qin, Xiao Di, Li Shang-Ze, Hu Yu
Food and Machinery
Objective: To improve the availability of cherry seed, cherry seed oil was extracted by the aqueous enzymatic method. Methods: the ratio of mixed enzymes was optimized by mixture design on the basis of single factor experiment. The basic indexes of oil such as fatty acid composition and physical and chemical properties were detected. Results: the optimum extraction conditions were a 2.0% addition of mixed enzyme comprising cellulase, pectinase and acid protease （0.67∶0.10∶0.23）, liquid to material ratio of 10∶1 (mL/g), enzymolysis temperature of 45 ℃, pH of 4.0 and time of 4.0 h. The recovery of oil was 93.18% and the …
