Improvement On Tobacco Temperature And Moisture Control Method Of Tobacco Heating Cylinder,
2021
Guangxi Zhongyan Industrial Co., Ltd., Liuzhou, Guangxi 545005, China
Improvement On Tobacco Temperature And Moisture Control Method Of Tobacco Heating Cylinder, Cui Sheng, Li Ri-Nan, Kang Jin-Ling, Liu Zhen, Huang Bo
Food and Machinery
In view of the problem that the current tobacco heating cylinder cannot meet the temperature and moisture control requirements of the tobacco under different process conditions, the existing tobacco heating cylinder was designed and improved. A cooling and humidity control system was added to the tobacco, heating cylinder to realize dual-mode adjustment and control of the temperature and moisture of different smoke sheets. According to the temperature and moisture control requirements of the tobacco， the improved tobacco heating cylinder can switch between forward and reverse flow control. Verification experiments showed that the temperature and moisture stability of the improved tobacco …
Coupling Method Of Near Infrared Spectroscopy And Multi Source Information For Potato Quality Identification,
2021
Jincheng School, Sichuan University, Chengdu, Sichuan 611731, China
Coupling Method Of Near Infrared Spectroscopy And Multi Source Information For Potato Quality Identification, Li Xue-Jun, Cheng Hong
Food and Machinery
The classification probability output based on machine vision and near infrared spectroscopy technology was established, and the classification decision model suitable for heterogeneous data was built by using DS evidence fusion rules. The directional gradient histogram and principal component extraction method were used to extract spectral features, and support vector machine and AdaBoost classifier were used for recognition. On this basis, the potato classification model based on feature layer fusion was constructed. By using multi-source information fusion technology, a multi-source information fusion agricultural product quality identification model was established, which integrated the classification decision of nondestructive testing and feature level …
Extraction And Membrane Separation Of Pigment From Seed Coat Of Red Adzuki Bean,
2021
College of Food Science, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China; Heilongjiang Engineering Research Center for Coarse Cereals Processing and Quality Safety, Daqing, Heilongjiang 163319, China; Agri-Food Processing and Engineering Technology Research Center of Heilongjiang Province, Daqing, Heilongjiang 163319, China
Extraction And Membrane Separation Of Pigment From Seed Coat Of Red Adzuki Bean, Jin Li-Mei, Sui Shi-You, Ren Meng-Ya, Bai Jing, Niu Guang-Cai, Li Zhi-Jiang
Food and Machinery
The red pigment from the seed coats of red adzuki beans was extracted by soaking in water and separated by the pressure-driven membrane technology (microfiltration, nanofiltration, etc.), and the separation processes were also optimized. The results showed that the optimal extraction conditions of pigment from seed coats were as follows: the ratio of material to liquid (mass of seed coats: volume of water) at 1∶30 （g/mL）, extraction temperature 90 ℃, extraction time 90 min, and the color value of the extracts reached 7.53. The optimized membrane separation process was the combination of microfiltration (0.22 μm) and nanofiltration membrane (NF245), with …
Effect Of Drying Technology On Curcumin Compounds And Volatile Oil In Curcuma Longa L.,
2021
School of Petroleum and Chemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, China
Effect Of Drying Technology On Curcumin Compounds And Volatile Oil In Curcuma Longa L., Tian Si-Hui, Dong Chun-Ping, Wang Che-Li
Food and Machinery
In order to explore the change law of curcumin compounds and turmeric volatile oil in the drying process, the effects of different drying temperatures （60, 80, 100, 120, 150 ℃）, time （2, 4, 6, 8, 10 h） on Curcumin compounds and turmeric volatile oil in Curcuma were studied. The selection of temperature in the actual drying process was further discussed. Curcuma was extracted by ultrasonic assisted extraction method for a certain time （0~10 h） at different temperatures （60~150 ℃）, and the volatile oil of Curcuma was extracted by steam distillation. The yield of the two was calculated respectively. The composition …
Research Progress On Formation Mechanism, Determination Methods And Regulatory Measure Of Acrylamide In Food,
2021
State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Jinan, Shandong 250353, China; School of Food Science and Engineering, Qilu University of Technology, Jinan, Shandong 250353, China
Research Progress On Formation Mechanism, Determination Methods And Regulatory Measure Of Acrylamide In Food, Chai Qing-Qing, Wu Wen, Liu Peng-Fei, Li Zi-Song, Wang Ai-Yue, Cui Bo
Food and Machinery
In this paper, the formation mechanism, detection methods and the potential strategies to reduce acrylamide concentration were reviewed. And it will be helpful to provide theoretical reference for controlling the formation of acrylamide in foods.
The Application Practice Of Nutri-Score Labeling And Its Enlightenment To China,
2021
Institute of Food and Nutrition Development, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
The Application Practice Of Nutri-Score Labeling And Its Enlightenment To China, Huang Ze-Ying, Huang Bei-Xun
Food and Machinery
Nutri-score labeling's promotion, implementation effect, algorithm, comparison with related FOP labels were elaborated, and then our study summarized application practice, and put forward the enlightenment for implementation of the FOP labeling in China.
The Research On Scavenging Nitrogen Radical Ability Of Reduced Pyrroloquinoline Quinone,
2021
College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou, Henan 450008, China
The Research On Scavenging Nitrogen Radical Ability Of Reduced Pyrroloquinoline Quinone, Ma Ke, Wu Zhen-Zhen, Yang Xue-Peng
Food and Machinery
The changes were discussed in the scavenging rate of ABTS free radicals of reduced pyrroloquinoline quinone (PQQH2) under different mass concentrations and different reaction time conditions. The primary and secondary reaction kinetic models were established. With conventional antioxidant vitamin C as a control, the scavenging performance of PQQH2 on ABTS free radicals was studied. Results: The higher of the concentration of PQQH2 and the longer the time were, the higher of the scavenging rate of ABTS free radicals was. After 25 minutes of reaction, the scavenging rate of 70 mg/L PQQH2 could reach more than …
Variations Of Physicochemical Properties Of Starch In Bitter Melon Function Rice,
2021
Longping Branch Graduate School, Hunan University, Changsha, Hunan 410125, China; Agricultural Products Processing Institute, Hunan Academy of Agricultural Sciences, Changsha, Hunan 410125, China
Variations Of Physicochemical Properties Of Starch In Bitter Melon Function Rice, Yang Yong-Jian, Yuan Jie, Tao Xiang-Lin, He Yan, Tang Han-Jun
Food and Machinery
The particle morphology, particle size distribution, crystal structure, gelatinization, gel texture and molecule properties of indica rice starch of importing bitter melon DNA （D9） were compared with its receptor. The results showed that the volume percentage of D9 starch <3 μm increased significantly, while the volume percentage of large granule >9 μm decreased. The molecular ordering index values of D9 starch were 0.67 and 1.66 respectively, which were significantly higher than those of receptor, 0.60 and 1.18; while the pasting temperature of differential scanning calorimetry was 65.5 ℃, which was significantly lower than that of receptor 77.8 ℃. The highest viscosity, the minimum viscosity, disintegration value and final viscosity of D9 …
Isolation, Identification And Enzyme Production Characteristics Of Culturable Bacteria In The Air Of High-Temperature Daqu Fermentation Room,
2021
Liquor Making Biotechnology and Application Key Laboratory of Sichuan Province, Sichuan University of Science & Engineering, Yibin, Sichuan 644000, China
Isolation, Identification And Enzyme Production Characteristics Of Culturable Bacteria In The Air Of High-Temperature Daqu Fermentation Room, Huang Zhi-Guo, Liu Na, Wei Chun-Hui, Deng Jie, Zhong Shu-Xia, Chen Bo, Ren Zhi-Qiang
Food and Machinery
Taking the cultivable bacteria in the air of high-temperature Daqu fermentation room as the research objects to study the characteristics of separation, identification and enzyme production. The cultivable bacteria were used to take liquid state fermentation in sorghum mash, and the metabolites were analyzed by gas chromatography-mass spectrometry. Results: 8 strains were isolated from the air in the high-temperature Daqu fermentation room, and they were: Bacillus amyloliquefaciens, Bacillus subtilis, Bacillus cereus, Pedobacter suwonensis, Sphingomonas sanguinis, Massilia sp., Delftia sp. and Sphingobacterium sp.. After the enzyme production tests, three dominant functional bacteria, Bacillus subtilis, Bacillus amyloliquefaciens, and Bacillus cereus, which all …
Isolation And Identification Of Two Acid Resistant Lactic Acid Bacteria From Traditional Pickles,
2021
College of Food Engineering, Qingdao Institute of Technology, Qingdao, Shandong 266300, China
Isolation And Identification Of Two Acid Resistant Lactic Acid Bacteria From Traditional Pickles, Feng Jin-Xiao, Li Ming-Zhu, Li Cui-Ping, Yan Wen-Di
Food and Machinery
A total of 8 strains of bacteria were isolated from 6 pickle samples in Northeast, Shandong, Guizhou, Sichuan and other places. Using simulated gastric acid experiments， morphological observations, physiological and biochemical experiments, lactic acid bacteria qualitative experiments, two strains of lactic acid bacteria with high survival rate under pH 2.5 conditions were obtained by simulation experiment. After 16S rDNA sequencing, it was determined that the two acid-resistant lactic acid bacteria were Lactobacillus brevis isolated from Shandong sugar garlic pickles numbered Shandong SRB and Lactobacillus casei isolated from Northeast sauerkrautnumbered Northeast HS.
The Effect Of Dark Tea Fungus On The Quality Of Wrapped Starter Culture Process,
2021
College of Food and Chemical Engineering，Shaoyang University, Shaoyang, Hunan 422000, China;Hunan Key Laboratory of Ecological Brewing Technology and Application, Shaoyang, Hunan 422000, China
The Effect Of Dark Tea Fungus On The Quality Of Wrapped Starter Culture Process, Fan Bin-Qiang, Wu Hao-Ren, Yu You-Gui, Liu An-Ran, Xiong Xiang
Food and Machinery
On the basis of the high-temperature wrapped starter production process, in the traditional wheat koji-making raw materials, 0%, 5%, 10%, 15%, and 20% of the weight of the wheat are added to the dark tea culture medium containing Eurotium cristatum. The changes of main microbial groups, enzyme activities and conventional physical and chemical indexes in the process of culture management were investigated. The results showed that, within 28 days of culture management, the number of microbial groups (mold, yeast, bacteria and E. cristatum), conventional physical and chemical indexes (culture temperature, Koji moisture, acidity and starch content) and enzyme activity (fermentability, …
Effects Of Enterobacter Fermentation On Chemical Components Of Tobacco Extract And Cigarette Quality,
2021
School of Food and Bioengineering, Zhengzhou University of Light Industry, Zhengzhou, Henan 450000, China
Effects Of Enterobacter Fermentation On Chemical Components Of Tobacco Extract And Cigarette Quality, Ye Jian-Bin, Qi Xiao-Na, Yang Zong-Can, Zhang Ting-Ting, Feng Ying-Jie
Food and Machinery
Here, tobacco extract was produced by fermentation using Enterobacter, then the tobacco extract was prepared by concentration. Continuous flow was applied to analyze the chemical composition of tobacco extract; and the aroma components were also analyzed by GC-MS. The as-prepared tobacco extract was applied in the cigarettes, and its effects on sensory and smoke aroma components were also evaluated. Results showed that, after fermentation, the content of protein, starch, galacturonic acid, total plant alkali and amino acid were decreased by 28.95%, 19.44%, 18.91%, 3.71% and 37.45%, respectively. The tobacco extracts prepared by fermentation had a typical sweet flavor, and the …
Thermal Pyrolysis Characteristics And Kinetics Study Of Reconstituted Tobacco With Different Coating Rates,
2021
Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, Henan 450001, China
Thermal Pyrolysis Characteristics And Kinetics Study Of Reconstituted Tobacco With Different Coating Rates, Zhang Guo, Yue Xian-Ling, Ye Jian-Bin, He Yuan, Zhang Jun-Song, Liang Miao
Food and Machinery
In order to investigate the pyrolysis characteristics of reconstituted tobacco with different coating rates, thermogravimetry technique combined with Coats-Redfern method was adopted to study the pyrolysis behavior and the variation of kinetic parameters of main weight loss stages. Furthermore, the pyrolysis gas release behavior was monitored by TG-FTIR technique. The results showed that: ① The content of C increased gradually and the content of O decreased with the increase of coating rate of reconstituted tobacco. While the change in the microstructure of reconstituted tobacco was not obvious. ② The thermogravimetric process of reconstituted tobacco can be divided into five stages: …
Uncertainty Evaluation For Determination Of Amantadine In Egg By Isotope Dilution-Uplc-Ms/Ms,
2021
Guizhou Academy of Testing and Analysis, Guiyang, Guizhou 550000, China
Uncertainty Evaluation For Determination Of Amantadine In Egg By Isotope Dilution-Uplc-Ms/Ms, Ma Kai, Bao Na, Huang Yong-Qiao, Wu Xin-Wen
Food and Machinery
A method for the evaluation of the uncertainty of amantadine in egg by ultra-performance liquid chromatography-stable isotope dilution mass spectrometry was established. Based on SN/T 4253—2015, the mathematical models of uncertainty was established and the sources of uncertainty were analyzed and evaluated, while the components of uncertainty were composed. The results showed that the expanded uncertainty was 4.9 μg/kg （k=2, 99% confidence interval） when the content of amantadine was 25.2 μg/kg, mainly caused by standard solution preparation and curve fitting.
Uncertainty Evaluation Of The Determination Of Vitamin C In Fruits And Vegetables By High Performance Liquid Chromatography,
2021
Shanghai Center of Agri-products Quality and Safety, Shanghai 201708, China
Uncertainty Evaluation Of The Determination Of Vitamin C In Fruits And Vegetables By High Performance Liquid Chromatography, Wang Xia, Zhang Wei-Yi, Han Yi-Yi, Chen Mei-Lian, Feng Dong-Sheng
Food and Machinery
To evaluate the uncertainty of the determination of vitamin C in fruits and vegetables by high performance liquid chromatography, a mathematical model was established to evaluate each uncertainty component, and the standard uncertainty and extended uncertainty of the synthesis were calculated. The results showed that the amounts of vitamin C in samples was 33.7 mg/100 g, and the expanded uncertainty was 1.4 mg/100 g (k=2). The uncertainties of the determination mainly come from the preparation of standard solution and the repeatability of determination.
Method Improvement Of Gas Chromatography In Determination Of Inositol In Infant And Young Children Formula Milk Powder,
2021
Hunan Testing Institute of Product and Commodity Supervision, Changsha, Hunan 410007, China
Method Improvement Of Gas Chromatography In Determination Of Inositol In Infant And Young Children Formula Milk Powder, Zhu Li, He Hao, Xue Min-Min, Chen Wen-Zhang, Cheng Meng-Ya, Yuan Lie-Jiang, Wu Hai-Zhi
Food and Machinery
Based on the second method of GB 5009.270—2016, a more convenient and efficient gas chromatography method was established for the detection of inositol content in infant formula milk powder. Compared with the second method of GB 5009.270—2016, this method can shorten the drying time and the derivative time on water bath through improving the extraction solvent and extraction methods, the purification methods, the drying methods of the derivatives and the adding sequence and proportion of derivative reagent. What’s more, this method can also reduce the retention time and analysis time in inositol’s detection by optimizing the testing parameters of gas …
The Study And Practice On The Standardized Methods For Rice Bran Oil Safety And Production,
2021
College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China; National Engineering Laboratory for Rice and By-product Deep Processing, Changsha, Hunan 410004, China
The Study And Practice On The Standardized Methods For Rice Bran Oil Safety And Production, Wu Xiao-Juan, Wu Wei
Food and Machinery
According to national, local and industry standards, the entire chain of rice bran oil production was analyzed and the critical control points, main detection indicators and risk assessment systems were determined. The safety and production controlling method of rice bran oil was established in accordance with the actual situation of the enterprise. The results indicated that the establishment and application of this method could reduce the acid value, peroxide value and plasticizer content of rice bran oil products, and increase their oryzanol and phytosterol content. The oryzanol content of 36 kinds of rice bran oil products produced in 2020 was …
Design Of Chocolate Bar Feeding System Based On Linear Array Camera,
2021
Tianjin Key Laboratory of Integrated Design and On-Line Monitoring Foe Light Industry ＆ Food Machinery and Equipment Tianjin University of Science ＆ Technology, Tianjin 300222, China
Design Of Chocolate Bar Feeding System Based On Linear Array Camera, Zheng Chen-Xu, Li Ya
Food and Machinery
A set of automatic feeding system of chocolate bar based on line array camera was designed. Design and select hardware system according to functional requirements; Aiming at the difficulty of hand-eye calibration for linear array cameras, a hand-eye calibration method for dynamic scanning imaging was proposed. After preprocessing the collected images, the template matching was used to identify the target, and the tracking trajectory was optimized and then sent to the robot to grasp and place. The experimental results showed that the grasping error of the robot was less than 0.5 mm, and the feeding speed met the requirements. The …
Rapid Detection Of Protein Contentin Rice Based On Near Infrared Spectroscopy,
2021
College of Food Science, Heilongjiang Bayi Agriculture University, Daqing, Heilongjiang 163319, China
Rapid Detection Of Protein Contentin Rice Based On Near Infrared Spectroscopy, Yin Kun, Liu Jin-Ming, Zhang Dong-Jie, Zhang Ai-Wu
Food and Machinery
In view of the time-consuming, labor-intensive, and costly problem of chemical detection methods in the national standard, the feasibility of near-infrared spectroscopy （NIRS） combined with chemometrics for rapid detection of rice protein was investigated. Based on strategies of variable selection, feature extraction and nonlinear modeling, BiPLS-PCA-SVM was constructed by combining reverse interval partial least squares （BiPLS） with principal component analysis （PCA） and support vector machine （SVM） to improve the performance of the protein regression model. In BiPLS-PCA-SVM, the optimal number of principal components （PCs） was selected by combining Monte Carlo cross validation with the predicted residual sum of squares, and …
Boiling Heat Transfer And Pec Evaluation Of Helical Bellows In Vertical Grooves,
2021
School of Food, Shanghai Ocean University, Shanghai 201306, China; Shanghai Cold Chain Equipment Performance and Energy Saving Evaluation Professional Technical Service Platform, Shanghai 201306, China; Shanghai Aquatic Product Processing and Storage Engineering Technology Research Center, Shanghai 201306, China; National Experimental Teaching Demonstration Center of Food Science and Engineering of Shanghai Ocean University, Shanghai 201306, China
Boiling Heat Transfer And Pec Evaluation Of Helical Bellows In Vertical Grooves, Wang Jin-Feng, Teng Wen-Qiang, Xie Jing, Zhu Sheng-Lin, Chang Wan-Ying
Food and Machinery
In this simulation, R32 in the inner tube is heated by the water flowing from the outer tube to make it boil. CFD is used to simulate the boiling heat transfer of the inner spiral bellows with different numbers of vertical grooves. The results showed that compared with the smooth tube, the inner helix corrugated structure enhances the boiling heat transfer but increases the pressure drop of the inner tube. The surface heat transfer coefficient and the inner tube pressure increase to 147% and 221% of the smooth tube, respectively. With the increase of the number of vertical grooves, the …
