Open Access. Powered by Scholars. Published by Universities.®

Food Processing Commons™

Open Access. Powered by Scholars. Published by Universities.®

2020

Discipline
Institution
Keyword
Publication
Publication Type

Articles 121 - 150 of 365

Full-Text Articles in Food Processing

Effect Of Sodium Chloride On Starch Properties From Different Adzuki Bean Varieties, Zhang Jing-Yi, Zhai Ai-Hua, Zhang Dong-Jie May 2020

Effect Of Sodium Chloride On Starch Properties From Different Adzuki Bean Varieties, Zhang Jing-Yi, Zhai Ai-Hua, Zhang Dong-Jie

Food and Machinery

The effects of sodium chloride on the properties of starch paste were studied by analyzing the size, viscosity, regeneration, enthalpy and gelatability of starch paste after adding sodium chloride. The results showed that the starch in da hong pao with low amylose content showed higher initial temperature, final viscosity and enthalpy of gelatinization than that in baoqing and pearl, with lower peak viscosity and smaller particle size; After the addition of 2% sodium chloride, the average particle size, peak viscosity, attenuation value and rejuvenation value of the three kinds of red bean starch gelatinized decreased significantly (P＜0.05). Gelatinization temperature and …

Go to article

Determination Of Polycyclic Aromatic Hydrocarbons In Gum-Based Chewing Tobacco By Gc-Ms/Ms, Cai Jie-Yun, Wang Hui-Ping, Liu Wei, Gu Jian-Long, Sun Hao-Wei, Zhang Ke, Long Jie, Li Chao May 2020

Determination Of Polycyclic Aromatic Hydrocarbons In Gum-Based Chewing Tobacco By Gc-Ms/Ms, Cai Jie-Yun, Wang Hui-Ping, Liu Wei, Gu Jian-Long, Sun Hao-Wei, Zhang Ke, Long Jie, Li Chao

Food and Machinery

In this study, an inter-standard quantitative method was used for determination of PAHs in gum-based chewing tobacco by GC-MS/MS. Under the control of the optimized experimental conditions, the LODs and the LOQs of 19 target PAHs could achieve 0.04~0.14 ng/mL and 0.14~0.46 ng/mL, respectively, while the linear correlation efficiencies were larger than 0.998 for all PAHs. With three different adding-levels, the recovery rates for all PAHs ranging from 92.26% to 109.46%. And the Intra-assay and Inter-assay precisions for the PAHs were 0.77%~3.85% and 1.57%~4.86%, respectively. The method developed was reliable and suitable for routine analysis of PAHs, and was verified …

Go to article

Quality Change And Shrinkage Model Of Kiwi During Freeze Drying And Vacuum Microwave Combined Drying, Lian Miao-Miao, Duan Xu, Huang Lue-Lue, Lin Hui-Yan May 2020

Quality Change And Shrinkage Model Of Kiwi During Freeze Drying And Vacuum Microwave Combined Drying, Lian Miao-Miao, Duan Xu, Huang Lue-Lue, Lin Hui-Yan

Food and Machinery

Kiwifruits were respectively dried by freeze-drying and vacuum-microwave combined drying, with different microwave power (0.25, 0.30 and 0.39 W/g). In combination with the shrinkage ratio, sensory quality, color difference, rehydration ratio and porosity of kiwifruit in the drying process, the drying characteristics, pore structure and shrinkage characteristics of kiwifruit pieces in the drying process were analyzed, and the shrinkage model of kiwifruit pieces in the process of FD pretreatment vacuum microwave drying was established. The results showed that the drying characteristics of kiwifruit slices changed with the different power of microwave, and the higher the microwave power could cause higher …

Go to article

Optimization Of Modifying Kiwifruit Peel Dietary Fiber With A Colloid Mill, Wu Hai-Yu, Gong Lin-Ling, Yang Wan-Gen May 2020

Optimization Of Modifying Kiwifruit Peel Dietary Fiber With A Colloid Mill, Wu Hai-Yu, Gong Lin-Ling, Yang Wan-Gen

Food and Machinery

Using water retention capability and oil-binding capability as indices, the effects of the factors such as insert spacing of colloid mill, ratio of liquid to solid and milling time on the indices were evaluated, and the optimal conditions of the modification were obtained by a Box-Behnken experiment. The results showed that the optimal modification conditions were: insert spacing of 13 μm, ratio of liquid to solid of 90∶1 (mL/g) and milling time of 7.5 min. After crushing under such conditions, the KPDF had an average particle size (D50) of 58 μm, lower than that before modification by 94.42%; …

Go to article

Functional Components, Health Function And Utilization Of Blueberry, Jin Yong-Xue, Feng Jian-Guo, Zheng Tao, Zeng Yi-Qiong, Zheng Hui, Yang Yong May 2020

Functional Components, Health Function And Utilization Of Blueberry, Jin Yong-Xue, Feng Jian-Guo, Zheng Tao, Zeng Yi-Qiong, Zheng Hui, Yang Yong

Food and Machinery

The main functional components, health care function, and application status of blueberry in food, medicine, cosmetics and other fields were reviewed, and the research direction of blueberry processing is to improve the polyphenol retention rate was also proposed.

Go to article

Effects Of Weissella Cibaria Ncu034005 And Leuconostoc Citreumncu027003 On Paocai Metabolites And Flavor, Xu Ya-Zhou, Xiong Tao, Xie Shu-Hu, Xiao Yang-Sheng, Liu Zhang-Gen May 2020

Effects Of Weissella Cibaria Ncu034005 And Leuconostoc Citreumncu027003 On Paocai Metabolites And Flavor, Xu Ya-Zhou, Xiong Tao, Xie Shu-Hu, Xiao Yang-Sheng, Liu Zhang-Gen

Food and Machinery

The raw materials of Paocai after sterilization were inoculated with Weissella cibaria NCU034005 and Leuconostoc citreum NCU027003, and fermented for 7 days at room temperature. The volatile and non-volatile substances (glucose, organic acids, amino acids, etc.), pH, and odor activity value in the Paocai liquid were detected during the fermentation. The results showed that the pH value of Paocai inoculated with W. cibaria NCU034005 and L. citreum NCU027003 dropped to varying degrees, and two strains of lactic acid bacteria have different metabolic capacity for carbohydrates, organic acids and amino acids. Principal component analysis (PCA) showed that metabolites and flavors in …

Go to article

Cloning,Expression And Purification Of Β-Conglycin Inα-Subunit Core Region, Li Yao-Xi, Yuan Yan-Qiu, Ju Qian, Gao Meng-Nan, Zhou Shu-Yi, Hu Ya-Yun, Luan Guang-Zhong May 2020

Cloning,Expression And Purification Of Β-Conglycin Inα-Subunit Core Region, Li Yao-Xi, Yuan Yan-Qiu, Ju Qian, Gao Meng-Nan, Zhou Shu-Yi, Hu Ya-Yun, Luan Guang-Zhong

Food and Machinery

The full-length cDNA of the soybean seeds was obtained by RT-PCR, and amplified by self-designed primers to obtain the target gene αc, The target gene was linked to the vector to construct a recombinant cloning vector pGEM-αc, which was identified by double digestion with XhoⅠ/EcoRⅠ and ligated with vector pET-28a to construct a recombinant plasmid pET-28a-αc. After correctly transferred into competent cells E.coli BL21 (DE3), the recombinant protein of α-subunit core region was expressed by inducing with the OD600 nm value 0.8, isopropylthiogalactoside (IPTG) 0.2 mmol/L at 37 ℃ for 9 h, and …

Go to article

Study On Antioxidant Peptides From Bean Dregs Fermented Bysolid Neurospora Crassa, Wei Chang-Hao, Deng Ze-Yuan, Fan Ya-Wei, Zou Xin-Hua, Li Jing, Li Hong-Yan May 2020

Study On Antioxidant Peptides From Bean Dregs Fermented Bysolid Neurospora Crassa, Wei Chang-Hao, Deng Ze-Yuan, Fan Ya-Wei, Zou Xin-Hua, Li Jing, Li Hong-Yan

Food and Machinery

Neurospora crassa was used to ferment the bean dreg, and the fermentation was operated under the optimal conditions for protease production. The peptide, total phenol, total flavonoid and the antioxidant capacity of soybean dregs at different fermentation time were measured. Experiments results showed that the contents of peptide, total phenol and total flavone of soybean dregs increased with the progress of fermentation, as well as the antioxidant capacity. The maximum contents of total phenol (2.513±0.032) mg/g and total flavone (0.787±0.052) mg/g were detected at 60 h after fermentation; after fermentation for 84 h, the peptide reached (75.602±3.599) mg/g, and the …

Go to article

Rheological Properties Of Starch Ferulic Acid Polymer Preparedby Twin-Screw Extrusion Technology, Nie Hui, Li Yu-Ling, Wang Hai-Yan May 2020

Rheological Properties Of Starch Ferulic Acid Polymer Preparedby Twin-Screw Extrusion Technology, Nie Hui, Li Yu-Ling, Wang Hai-Yan

Food and Machinery

The starch ferulic acid polymer were prepared by twin-screw extrusion technology, and changes of were studied, including the rheological properties, shear thinning and thixotropy. The results showed that after gelatinization of starch ferulic acid polymer, the paste conformed to the power function Ostwald de Waele model, showing the characteristics of pseudoplastic fluid. With the apparent viscosity increased with increasing of fluidity, the paste obeyed the shear thinning. The thixotropy increased with the increase of sample concentration.

Go to article

Study On Physicochemical Properties Of The Starch Fiom Dioscorea Alata L., He Hai-Xia, Li Dong-Ming, Wu Ying-Ying, Li Qiao-Mei, Xiao Jian-Hui, Tu Jin May 2020

Study On Physicochemical Properties Of The Starch Fiom Dioscorea Alata L., He Hai-Xia, Li Dong-Ming, Wu Ying-Ying, Li Qiao-Mei, Xiao Jian-Hui, Tu Jin

Food and Machinery

Alkaline process was used to extract the starch from Dioscorea alata L., and the composition, transparency, freeze-thaw stability, settling property, water holding capacity, solubility, swelling, gelatinization and viscosity characteristics of the extracted starch were analyzed. The results showed that the content of amylose in legume Dioscorea alata L. was 27.05%. Compared with the starch from wheat, mung bean, and potato, the transparency, settling ability, water retention, and thermal stability of legume potatoes were found best. However, the freeze-thaw stability was poor, and it was difficult to gelatinize. The dissolving power and swelling power of the starch from legume potato increased …

Go to article

Effect Of Cacl2 On Water Holding Capacity And Microstructure Of Tilapia Myosin Gel Under The Low Salt Condition, Feng Rui, Hong Peng-Zhi, Yang Ping, Zhou Chun-Xia May 2020

Effect Of Cacl2 On Water Holding Capacity And Microstructure Of Tilapia Myosin Gel Under The Low Salt Condition, Feng Rui, Hong Peng-Zhi, Yang Ping, Zhou Chun-Xia

Food and Machinery

Myosin was extracted from tilapia (Oreochromis niloti-cus) and the heat-induced gel was prepared, and the effect of CaCl2 addition on the water holding capacity, microstructure and chemical interactions of myosin gel was investigated under different salt conditions (1,50,150,600 mmol/L NaCl). The effects and mechanisms of Ca2+on thermal gel properties of myosin were determined under the low salt conditions. Experimental results showed that under the conditions of low salt concentration (1~150 mmol/L NaCl), there were weak opaque gels due to a rapid aggregation of myosin filaments during heating. These myosin gels exhibited a cross-linked network with coarse cross-linked …

Go to article

Nti-Inflammatory Effect And Mechanism Of Major Components In Tetrastigma Hemsleyanum Diels Et Gilg, Xing Qian, Zheng Liu-Feng, Gan Ting, Xiao Ting, Deng Ze-Yuan, Liu Xiao-Ru May 2020

Nti-Inflammatory Effect And Mechanism Of Major Components In Tetrastigma Hemsleyanum Diels Et Gilg, Xing Qian, Zheng Liu-Feng, Gan Ting, Xiao Ting, Deng Ze-Yuan, Liu Xiao-Ru

Food and Machinery

The study aims to screen potential anti-inflammatory phytochemicals and explore its mechanism from Tetrastigma hemsleyanum Diels et Gilg based on their molecular docking with Keap1 protein and low-grade inflammatory model of vascular endothelial cells, and further analyzes the effects of active ingredients on the gene and protein expression of pro-inflammatory factors. Results showed that kaempferol-3-O-rutinoside, isoquercitrin, and rutin in root and 5-caffeoylquinic acid, vitexin, and orientin in leaf had significant interactions with Keap1 protein, all of which occurred in the binding cavity of Keap1 with Nrf2 protein, possibly leading to the dissociation of Nrf2 and activation. All of these six …

Go to article

Studies On Gelatinization Properties Of Extruded Rice With Coarse Grains, Li Zhao-Zhao, Wu Wei-Guo, Liao Ru-Yan, He Biao May 2020

Studies On Gelatinization Properties Of Extruded Rice With Coarse Grains, Li Zhao-Zhao, Wu Wei-Guo, Liao Ru-Yan, He Biao

Food and Machinery

In this study, extruded reconstituted rice was prepared by using extrusion processing technology, using aging early indica rice flour as the main raw material, with coarse grains such as buckwheat, barley, quinoa, chickpea, oat bran . The RVA rapid viscosity analyzer was used as the research Means to explore the effects of different coarse grains, and their different additions (0%, 5%, 10%, 15%, 20%, 25%) on the gelatinization characteristics of recombinant rice. The results showed that when the amount of oat bran added was greater than 15%, the oat bran and quinoa and barley could significantly increase the peak viscosity …

Go to article

Analysis Of Composition And Antioxidant Activity Of Polysaccharides In Immature Rice During Seed Development, Li Hong-Liang, Li Dan, Zhang Chao, Zhang Dong-Jie May 2020

Analysis Of Composition And Antioxidant Activity Of Polysaccharides In Immature Rice During Seed Development, Li Hong-Liang, Li Dan, Zhang Chao, Zhang Dong-Jie

Food and Machinery

In order to determine the change rule of polysaccharides content in fresh rice grains at different mature stages, the polysaccharides were extracted from fresh rice grains at different mature stages by ultrasonic-microwave synergistic extraction method. The composition of polysaccharides was analyzed by HPLC, and the antioxidant activity of polysaccharides was determined by antioxidant test in vitro. The results showed that the content of polysaccharides in fresh rice was the highest at the stage of late milk, up to 46.89 mg/g. Mannose, rhamnose, glucuronic acid, galacturonic acid, glucose, galactose, xylose, arabinose and fucose were the main components of polysaccharides at this …

Go to article

Screening And Identification Of Biogenic Amine Degrading Strains, Du Xue, You Yan-Feng May 2020

Screening And Identification Of Biogenic Amine Degrading Strains, Du Xue, You Yan-Feng

Food and Machinery

Strains with biodegradability of biogenic amines were screened from lactic acid bacteria strains from different sources preserved in the laboratory, and their growth ability at different salt concentrations and pH values were determined. The results showed that three strains with the capability of degrading biogenic amines were screened out. Based on 16S rDNA sequence analysis, strain HM22 was identified as Lactobacillus fermentum, strain HM24 as Lactobacillus plantarum, and strain YF10042 as Enterococcus faecalis. Among them, Lactobacillus plantarum HM24 has the best degradation ability. The degradation rates of tryptamine, phenethylamine, putrescine, cadaverine, histamine, tyramine, spermidine and spermine are …

Go to article

Study On The Preparation Of Tetracyline Magnetic Molecularly Imprinted Biochar Microspheres Based On Pickering Emulsion Polymerization, Ma Zhen-Zhen, He Jin-Xing, Zhao Tao, Zhao Xiao-Lei May 2020

Study On The Preparation Of Tetracyline Magnetic Molecularly Imprinted Biochar Microspheres Based On Pickering Emulsion Polymerization, Ma Zhen-Zhen, He Jin-Xing, Zhao Tao, Zhao Xiao-Lei

Food and Machinery

In this study, magnetic molecularly imprinted biochar microspheres for specific adsorption of tetracylines (TCs) were prepared by Pickering emulsion polymerization using tetracyline (TC) as template and Fe3O4 and biochar as co-stabilizers. The adsorption properties of the imprinted microspheres for TC were studied by adsorption kinetics test, adsorption isothermal test, and selectivity adsorption test, exhibiting the excellent specific adsorption for TC with imprinting factor of 3.97. Further more, the imprinted materials were used as adsorbents for extraction and purification of TCs in real samples, and the content of TCs were detected through high performance liquid chromatography (HPLC). Under …

Go to article

Research On Discriminating Wine Varieties Based On Electronic Nose And Lightgbm Algorithm, Qiao Miao, Zhang Lei, Mu Fang-Lin May 2020

Research On Discriminating Wine Varieties Based On Electronic Nose And Lightgbm Algorithm, Qiao Miao, Zhang Lei, Mu Fang-Lin

Food and Machinery

Aiming at the problem of wine identification, the odor information of 7 kinds of wine was collected through the electronic nose, the LightGBM algorithm was used to learn the odor characteristics of the wine, and the TPE hyperparameter optimization algorithm is used to adaptively optimize the HyperGB parameter of the LightGBM algorithm. Verification is an indicator to evaluate the performance of the model. The experimental results showed that the discrimination model established by LightGBM had a 96.62% accuracy rate for wine samples, which was superior to traditional support vector machines, random forests, and neural networks. It verifies the superiority of …

Go to article

Residue And Dietary Risk Assessment Of Quizalofop-P-Ethyl Andits Metabolites In Adzuki Bean, Qu Jiang-Ling, Tang Hua-Cheng, Cao Dong-Mei May 2020

Residue And Dietary Risk Assessment Of Quizalofop-P-Ethyl Andits Metabolites In Adzuki Bean, Qu Jiang-Ling, Tang Hua-Cheng, Cao Dong-Mei

Food and Machinery

In order to evaluate the long-term and short-term dietary intake risk of quizalofop-p-ethyl and quizalofop-p-acid in adzuki bean, the final residue of them was determined. Using the application concentration of 0.3~0.6 mL/m2, the application frequency of 2~3 times with various picking intervals, the residue of quizalofop-p-ethyl in adzuki bean was 0.03~1.07 mg/kg, and that of quizalofop-p-acid was 0.05~1.20 mg/kg. The long-term dietary intake risk quotient (RQc) and short-term dietary intake risk quotient (RQa) were 1.98%~19.70% and 0.50%~1.30%, respectively.

Go to article

The Ethical Basis And Enlightenment Of American Food Safety Law, Yao Hong-Min May 2020

The Ethical Basis And Enlightenment Of American Food Safety Law, Yao Hong-Min

Food and Machinery

In many changes of food safety legal system in the United States, consumption ethics, business ethics and administrative ethics are integrated into it. Based on the perspective of legal ethics, it is an effective way to gradually build a food safety standard system that adheres to “fairness and goodness” to achieve the legal ethics concepts of government fairness, corporate efficiency and consumer safety as much as possible. This may alleviate the food safety problems, and promote the modernization of food safety legal system in China.

Go to article

A Quick Determination Of The Content Of Tartrazine And Sunset Yellow Fcf In Beverages And Jelly By Cyclic Voltammetry, Chu Hong-Tao, Yu Miao, Chen Jia-Qi, Yao Dong, Su Li-Qiang, Qin Shi-Li, Qi Hai-Yan May 2020

A Quick Determination Of The Content Of Tartrazine And Sunset Yellow Fcf In Beverages And Jelly By Cyclic Voltammetry, Chu Hong-Tao, Yu Miao, Chen Jia-Qi, Yao Dong, Su Li-Qiang, Qin Shi-Li, Qi Hai-Yan

Food and Machinery

By using a three-electrode setup consisting of a working electrode made up of glassy carbon, a counter electrode made up of platinum, and a reference electrode made up of saturated calomel, the cyclic voltammetry was utilized to measure the content of tartrazine and sunset yellow FCF in five goods sold in the market and the measurement method was optimized. The result indicated by the cyclic voltammetry curve that the peak current was linearly correlated to the analyte concentration within the range of 0.1~0.8 μg/mL. The concentration of tartrazine and sunset yellow FCF in the five samples were measured to be …

Go to article

Research Status And Prospect Of Scraped-Surface Heat Exchanger, Li Shi-Cheng May 2020

Research Status And Prospect Of Scraped-Surface Heat Exchanger, Li Shi-Cheng

Food and Machinery

The structure and principle of the scraped-surface heat exchanger were systematically summarized, and the relative process applications, internal flow laws, shear rate, heat transfer mechanism, residence time distribution and power consumption were also reviewed. Moreover, the future development trend and research direction of the scraped-surface heat exchanger were prospected.

Go to article

Design Of High Bag Palletizing Machine Based On Synchronized Belt Drive, Zhang Jian-Qiang, Chen Xing, Liu Zhi-Peng May 2020

Design Of High Bag Palletizing Machine Based On Synchronized Belt Drive, Zhang Jian-Qiang, Chen Xing, Liu Zhi-Peng

Food and Machinery

In order to obtain the high-speed and stable automatic stacking, a high-position automatic stacking of bagged materials was designed, by using synchronous pulley and chains. The parameters and stacking requirements of the bagged materials were explained, and the stacking mechanism was presented based on synchronous belt driving. The working principle of the automatic stacking was shown, and the stacking mechanism through analysis and calculation were determined. Finally, the static analysis of the stacker spindle, based on SolidWorks Simulation, was carried out, and the simulation results showed that the design could meet the requirements.

Go to article

R&D And Application Evaluation Of A Reconstituted Cut Tobacco Cutting-Winnowing System, Song Wei-Min, Xiao Hui, Li Chun-Guang, Hu Hong-Shuai, Zu Meng-Meng, Zhang Jun-Ling, Li Shu-Fang May 2020

R&D And Application Evaluation Of A Reconstituted Cut Tobacco Cutting-Winnowing System, Song Wei-Min, Xiao Hui, Li Chun-Guang, Hu Hong-Shuai, Zu Meng-Meng, Zhang Jun-Ling, Li Shu-Fang

Food and Machinery

Designed a reconstituted cut tobacco cutting-winnowing system. The system is constituted of feeding apparatus, cutting apparatus and winnowing apparatus. The system adopts integration design, twice-cutting apparatus, integrated blade, flywheel and back-taper air separator. The tobacco shred is cut by using the speed difference between the fast and slow knife discs to form a "cut" effect, and purification and dust removal is done by system sealing and air selection and air supply system. Compared to before the cut, twice-cutting design make a 29.06% decrease of long cut tobacco (length ＞20 mm) and a 0.12% increase of scrap tobacco (length ＜ 5 …

Go to article

Detections Of Dust Proof, Water Proof And Oil Proof On Packaging Film Of Deoxidizer For Food, Zhou Cong, Wan Fu, Liu Zhao, Zhao Jin-Yao, Kang Feng, Xu Liang May 2020

Detections Of Dust Proof, Water Proof And Oil Proof On Packaging Film Of Deoxidizer For Food, Zhou Cong, Wan Fu, Liu Zhao, Zhao Jin-Yao, Kang Feng, Xu Liang

Food and Machinery

In this paper, the test methods of dust-proof, water-proof and oil-proof properties of deoxidizer packaging film for food were studied. The microscope observation method was used to test the dust-proof performance, and the folding box observation method was used to test the water-proof and oil-proof performance. After optimization, the test conditions were as follows: for dust-proof test, use a microscope to observe whether there is a straight hole; for water-proof test, use 10 mL, 0.08% sodium dodecyl benzene sulfonate aqueous solution at room temperature; for oil-proof test, use 5 mL, 60 ℃ olive oil; take the leakage time as the …

Go to article

The Application Of Quadratic Culture In Local Food Packaging And Brand Building, Gao Deng-Ming May 2020

The Application Of Quadratic Culture In Local Food Packaging And Brand Building, Gao Deng-Ming

Food and Machinery

At present, the development of local food industry presents a slow situation, which can effectively solve the problem of local food packaging and brand, among which, the use of ACG (mobile roaming) quadratic element culture optimization and innovation of local food packaging has its important value. At the same time, in the design of it, should pay attention to the regional cultural characteristics, display brand and emphasize the sense of experience, so as to enhance the connotation and practicability of packaging design.

Go to article

Effect On The Cold Sterilization Of Areca Catechu Packaging Products By High Voltage Electric Field And Cold Plasma, Cao Li-Na, Zhang Jian-Hao, Wang Xiao-Ting, Wei Qiao-Yun, Wang Yi-Yue, Yan Wen-Jing May 2020

Effect On The Cold Sterilization Of Areca Catechu Packaging Products By High Voltage Electric Field And Cold Plasma, Cao Li-Na, Zhang Jian-Hao, Wang Xiao-Ting, Wei Qiao-Yun, Wang Yi-Yue, Yan Wen-Jing

Food and Machinery

Response surface methodology was used to explore the sterilization efficiency of areca catechu by working frequency, voltage, time and oxygen ratio of high voltage electric field. The results showed that within a certain range, the sterilization rate increased significantly with the increase of working frequency, voltage and time (P＜0.05). When the frequency was higher than 100 Hz and the time exceeded 150 s, the sterilization rate did not change significantly (P＞0.05). Regression analysis results showed that the increase of frequency was positively correlated with the changes of voltage and time critical values (R2=1), indicating that frequency, voltage and …

Go to article

Effects Of Preharvest Different Preservatives Spraying On Postharvest Storage Quality Of Blueberry, Cao Sen, Ji Ning, Ba Liang-Jie, Ma Chao, Wang Hong, Yao Xiu-Dan, Wang Rui May 2020

Effects Of Preharvest Different Preservatives Spraying On Postharvest Storage Quality Of Blueberry, Cao Sen, Ji Ning, Ba Liang-Jie, Ma Chao, Wang Hong, Yao Xiu-Dan, Wang Rui

Food and Machinery

Powderblue blueberry fruits were sprayed (800 mg/L Natamycin, 1 000 mg/L ε-Polylysine, 800 mg/L Chitosan) before harvest. The four groups of fruits were stored at low temperature (0.5±0.5) ℃ and the physiological indexes of the four groups were determined. The results showed that: compared with the control(CK), the different preservation could reduce the increase of fruit decay rate, delay the decrease of fruit firmness, soluble solids, titratable acid content and anthocyanin content, inhibit the respiration rate and ethylene production rate of fruit. The POD、CAT、LOX and APX were effectively maintained. The mold and yeast counts of blueberry were better reduced. The …

Go to article

Effect Of Electrolyzed Ozone Water On The Quality Of Fresh-Cut Lotus Root, Tang Qian, Liu Yong-Le, Liu Xiang-Ru, Yu Jian, Wang Fa-Xiang, Li Xiang-Hong May 2020

Effect Of Electrolyzed Ozone Water On The Quality Of Fresh-Cut Lotus Root, Tang Qian, Liu Yong-Le, Liu Xiang-Ru, Yu Jian, Wang Fa-Xiang, Li Xiang-Hong

Food and Machinery

In order to improve the commodity value of fresh-cut lotus root and prolong the shelf life, this study analyzed the effects of electrolyzed ozone water on the total colony count, weight loss rate, total acid content, soluble solids content, hardness and color of fresh-cut lotus root during cold storage. The results showed that the increase of total colony count and weight loss rate was inhibited by ozone water treatment, which was only 37.84% and 52.54% of control group, respectively, after 12 days of cold storage. The decline of total acid content in ozone group was also inhibited but its initial …

Go to article

Preparation Of Ink Melanin From Sepia Esculenta By Ultrasound-Assisted And Its Protective Effects On Oxidative Damage In Caco-2 Cells, Zhang Jing-Yu, Xie Wan-Cui, Che Hong-Xia, Yang Xi-Hong May 2020

Preparation Of Ink Melanin From Sepia Esculenta By Ultrasound-Assisted And Its Protective Effects On Oxidative Damage In Caco-2 Cells, Zhang Jing-Yu, Xie Wan-Cui, Che Hong-Xia, Yang Xi-Hong

Food and Machinery

In order to investigate the protective effect of Sepia esculenta ink melanin on the oxidative damage of human cloned colon adenocarcinoma cells (Caco-2), the ultrasound-assisted method was used to prepare Sepia esculenta ink melanin and its structure characterization and antioxidant capacity were measured. In this study, 150 μmol/L tert-butyl hydrogen peroxide (TBHP) was used to induce the oxidative damage model of Caco-2 cells, and the cell survival rate was determined by the MTT method, as well as the activity of superoxide dismutase (SOD) and malondialdehyde (MDA) in cells were determined. The experimental results showed that the melanin extracted by ultrasound …

Go to article

Preparation Of Polysaccharde Liposomes From Bettila Striata And Their Effects On Tyrosinase Activity, Kong Ling-Yue, Xiang Hua, Tang Ke-Hua, Dong Ai-Wen, Tang Zhong-Hai May 2020

Preparation Of Polysaccharde Liposomes From Bettila Striata And Their Effects On Tyrosinase Activity, Kong Ling-Yue, Xiang Hua, Tang Ke-Hua, Dong Ai-Wen, Tang Zhong-Hai

Food and Machinery

Nano-liposome method was used to prepare high-content polysaccharide liposomes from Bettila striata, and the interaction mechanism between them and tyrosinase were studied. The results showed that the average particle size of the prepared polysaccharide liposomes was 5.72 μm and the particle size distribution was uniform; when the concentration was 12.8 mg/mL, the inhibition rate of these polysaccharide liposomes on tyrosinase activity was 51%, and the half inhibitory concentration was 11.56 mg/mL. Spectral analysis showed that the polysaccharide liposomes from B. striata could interact with tyrosinase, with the binding constant of 6.58×105 L/mol; the fluorescence quenching mechanism was mainly static …

Go to article

First Prev Next Last