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Articles 4981 - 5010 of 12361
Full-Text Articles in Food Science
Beets, Janet Smith, Anita Raddatz, Heidi Leblanc
Beets, Janet Smith, Anita Raddatz, Heidi Leblanc
All Current Publications
This publication is part of the Food Sense Guide to Eating Fresh Fruits and Vegetables and includes information on selecting, preparing, cooking, and storing beets.
Peas, Darlene Christensen
Peas, Darlene Christensen
All Current Publications
This publication is part of the Guide to Eating Fresh Fruits and Vegetables and includes information on seasonal availability, eating, storing, and cooking peas.
Maize Flavan-4-Ols And Anthocyanins Alleviated Dextran Sulfate Sodium-Induced Colitis In Mice Via Intestinal Barrier Function Restoration, Binning Wu, Shiyu Li, Haotian Chang, Ruth Anderson, Surinder Chopra, Lavanya Reddivari
Maize Flavan-4-Ols And Anthocyanins Alleviated Dextran Sulfate Sodium-Induced Colitis In Mice Via Intestinal Barrier Function Restoration, Binning Wu, Shiyu Li, Haotian Chang, Ruth Anderson, Surinder Chopra, Lavanya Reddivari
Department of Food Science Faculty Publications
This study investigated the anti-inflammatory effects of anthocyanins and flavan-4-ols (precursor of phlobaphenes) within a whole-food matrix against dextran sulfate sodium (DSS)-induced colitis using four maize near-isogenic lines (NILs) that differ only in a single class of flavonoids. The four NILs are A (lacks anthocyanins and phlobaphenes), B (phlobaphenes +), C (anthocyanins +) and D (anthocyanins + and phlobaphenes +).
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
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 …
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
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 …
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
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 …
Rheological Properties Of Starch Ferulic Acid Polymer Preparedby Twin-Screw Extrusion Technology, Nie Hui, Li Yu-Ling, Wang Hai-Yan
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.
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
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 …
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
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 …
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
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 …
Studies On Gelatinization Properties Of Extruded Rice With Coarse Grains, Li Zhao-Zhao, Wu Wei-Guo, Liao Ru-Yan, He Biao
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 …
Analysis Of Composition And Antioxidant Activity Of Polysaccharides In Immature Rice During Seed Development, Li Hong-Liang, Li Dan, Zhang Chao, Zhang Dong-Jie
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 …
Screening And Identification Of Biogenic Amine Degrading Strains, Du Xue, You Yan-Feng
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 …
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
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 …
Research On Discriminating Wine Varieties Based On Electronic Nose And Lightgbm Algorithm, Qiao Miao, Zhang Lei, Mu Fang-Lin
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 …
Residue And Dietary Risk Assessment Of Quizalofop-P-Ethyl Andits Metabolites In Adzuki Bean, Qu Jiang-Ling, Tang Hua-Cheng, Cao Dong-Mei
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.
The Ethical Basis And Enlightenment Of American Food Safety Law, Yao Hong-Min
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.
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
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 …
Research Status And Prospect Of Scraped-Surface Heat Exchanger, Li Shi-Cheng
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.
Design Of High Bag Palletizing Machine Based On Synchronized Belt Drive, Zhang Jian-Qiang, Chen Xing, Liu Zhi-Peng
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.
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
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 …
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
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 …
The Application Of Quadratic Culture In Local Food Packaging And Brand Building, Gao Deng-Ming
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.
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
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 …
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
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 …
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
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 …
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
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 …
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
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 …
Optimization Of Ultrasonic-Assisted Extraction Process And Analysis Of Fatty Acid Composition Of Panicum Miliaceum L. Shell Oil, Miao Xin-Yue, Zhu Dan, Yan Fei-Xiang, Niu Guang-Cai, Wei Wen-Yi, Zhu Li-Bin
Optimization Of Ultrasonic-Assisted Extraction Process And Analysis Of Fatty Acid Composition Of Panicum Miliaceum L. Shell Oil, Miao Xin-Yue, Zhu Dan, Yan Fei-Xiang, Niu Guang-Cai, Wei Wen-Yi, Zhu Li-Bin
Food and Machinery
The n-hexane was used as extraction solvent, and the ultrasonic-assisted extraction parameters of Panicum miliaceum L. shell oil were optimized by response surface methodology based on the single factor experiment of ultrasonic power, liquid-solid ratio, extraction time and extraction temperature. The results showed that the optimum extraction parameters were as follows: the ultrasonic power was 400 W, the liquid-solid ratio was 12∶1 (mL/g), the extraction temperature was 70 ℃, and the extraction time was 50 min, and the yield of Panicum miliaceum L. shell oil reached 6.95% under the optimal condition. Five kinds of fatty acids were identified by GC, …
Analysis Of Active Compounds, Antioxidant Activity And Correlation In Different Parts From Ficus Tikoua Bur., Yang Xiu-Qun, Xie Guo-Fang, Wu Qian, Chen Lian, Chen Jia, Liu Yong-Ling
Analysis Of Active Compounds, Antioxidant Activity And Correlation In Different Parts From Ficus Tikoua Bur., Yang Xiu-Qun, Xie Guo-Fang, Wu Qian, Chen Lian, Chen Jia, Liu Yong-Ling
Food and Machinery
To investigate the bioactive compounds and antioxidant activity of vine, leaves and fruits of the Ficus tikoua Bur. in Guizhou Province, the phenolic compounds, vitamin C, total phenols, total flavonoids were analyzed. Antioxidant activity was evaluated by total reducing power assay (TRPA), free radical scavenging capacity of ABTS+· (ABTS) and ferric ion reducing antioxidant power(FRAP) method in vitro, and Pearson correlation analysis was conducted. The results indicated that the contents of bioactive compounds and antioxidant activity were significantly different between the vine, leaves and fruits (P<0.05). The content of total phenols and flavonoids in vine was significantly higher …