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Articles 6121 - 6150 of 12362

Full-Text Articles in Food Science

Orphan Genes Shared By Pathogenic Genomes Are More Associated With Bacterial Pathogenicity, Sarah Entwistle, Yanbin Yin Feb 2019

Orphan Genes Shared By Pathogenic Genomes Are More Associated With Bacterial Pathogenicity, Sarah Entwistle, Yanbin Yin

Department of Food Science and Technology: Faculty Publications

Orphan genes (also known as ORFans [i.e., orphan open reading frames]) are new genes that enable an organism to adapt to its specific living environment. Our focus in this study is to compare ORFans between pathogens (P) and nonpathogens (NP) of the same genus. Using the pangenome idea, we have identified 130,169 ORFans in nine bacterial genera (505 genomes) and classified these ORFans into four groups: (i) SS-ORFans (P), which are only found in a single pathogenic genome; (ii) SS-ORFans (NP), which are only found in a single nonpathogenic genome; (iii) PS-ORFans (P), which are found in multiple pathogenic genomes; …

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Combined Effects Of Calcium Ascorbate Treatment And Modified Atmosphere Packaging To Improve Quality Retention Of Fresh-Cut Cantaloupes, Joongmin Shin, Kevin Mis Solval, Bob Xiang, Youn Suk Lee Feb 2019

Combined Effects Of Calcium Ascorbate Treatment And Modified Atmosphere Packaging To Improve Quality Retention Of Fresh-Cut Cantaloupes, Joongmin Shin, Kevin Mis Solval, Bob Xiang, Youn Suk Lee

Journal of Applied Packaging Research

The impact of passive modified atmosphere packaging technique (MP) and calcium ascorbate (CA) on the extension of freshness and shelf life in fresh-cut cantaloupe was studied at two storage temperatures (4 and 10°C). Fresh cantaloupes were cut into uniform size cubes (25.4 mm x 25.4mm x 25.4mm). Then, half of the fresh cut cubes was dipped into the treatment solution, and the others were not. Clamshell tray with snap-on lid (control) and micro-perforated sealable lid (MP) was used as the fresh cut fruits packaging. Fresh cut cantaloupes in CA and MP combination (CA-MP) observed the highest quality preservation among the …

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Global Sustainability That Respects Cultural Diversity & Individual Health Needs, Meriterese Racanelli Feb 2019

Global Sustainability That Respects Cultural Diversity & Individual Health Needs, Meriterese Racanelli

Sustainability Seminar Series

The USA Centers for Disease Control and National Institutes of Health have classified excessive sodium consumption, high blood pressure and diabetes as national health epidemics across various ethnic cultures. The United Nations and other countries classify these as Global Epidemics. Interestingly,some ways to help fix this national and global health crisis can be found in the balance of sustainable environmentally-friendly agriculture, green technologies, and cultural competencies. Learn how sustainability studies, research, and jobs can still respect an individual’s ethnic heritage, culture, and nutritional health needs, while improving the community health at large... from local to global. Sustainability can help us …

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Optimizing Gastrointestinal Integrity In Poultry: The Role Of Nutrients And Feed Additives, Sunday A. Adedokun, Opeyemi C. Olojede Jan 2019

Optimizing Gastrointestinal Integrity In Poultry: The Role Of Nutrients And Feed Additives, Sunday A. Adedokun, Opeyemi C. Olojede

Animal and Food Sciences Faculty Publications

Immunomodulation of the immune system by stimulating or suppressing one or both arms, is an emerging concept driven by the understanding of the host defense system. In particular, the gastrointestinal tract (GIT) functions not only as a site for digestion and absorption of nutrients but also acts as a metabolic and immunological organ. This serves as a barrier against abnormal presentation of luminal constituents, caused by dysfunctional intestinal epithelial barrier, to the mucosal immune system. Invasion by pathogens in the case of disease or stress or a massive influx of commensal bacteria overcomes the defensive mechanisms, resulting in the full …

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Effects Of Red Raspberry Polyphenols And Metabolites On Biomarkers Of Inflammation And Insulin Resistance In Prediabetes And Type 2 Diabetes, Reynaldo Moreno Ucles Jan 2019

Effects Of Red Raspberry Polyphenols And Metabolites On Biomarkers Of Inflammation And Insulin Resistance In Prediabetes And Type 2 Diabetes, Reynaldo Moreno Ucles

LSU Doctoral Dissertations

Berry fruits are rich sources of polyphenolic compounds (PCs), which can promote health benefits. Anthocyanin concentrations of red raspberry (RR)(Rubus idaeus) extracts were determined to be a total of 887.6 ± 262.8 μg/g cyanidin-3-sophoroside (C3S) equivalents with C3S being the most prevalent. Ellagitannin analysis by MALDI-TOF indicated sanguiin H-6 and lambertianin C were the major ellagitannins present in RR. To explore the efficacy of RR in modulating diabetes, seven type 2 diabetes mellitus (T2DM) and two pre-diabetic patients were given drinks delivering one RR serving (123 g) per day in a smoothie for two weeks. Blood samples were …

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Research On The Advances And Prospects Application Of Antibacterial Packaging Plastic Film, Yang Fuxin, Ding Xiaotong, Qiu Yanna, Zhang Jiongjiong, Fan Fei, Chen Zuguo Jan 2019

Research On The Advances And Prospects Application Of Antibacterial Packaging Plastic Film, Yang Fuxin, Ding Xiaotong, Qiu Yanna, Zhang Jiongjiong, Fan Fei, Chen Zuguo

Food and Machinery

Antibacterial packaging plastic film is a kind of new packaging materials, which can resist to microbial erosion, improve food shelf life, has become a research hotspot. In this paper, the effects of antibacterial plastic film, film preparation method, antibacterial mechanism, nano-modification, antibact-erial agent modification, liquid food antibacterial and antibacterial packaging plastic film were reviewed and discussed. It is prospective to the application and research direction of antibacterial packaging plastic film.

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Research Progress On The Controlled Release Technology Of Active Compounds From Active Packaging Film, Chen Chenwei, Wang Jiaxi, Yang Fuxin, Xie Jing, Tang Zhipeng Jan 2019

Research Progress On The Controlled Release Technology Of Active Compounds From Active Packaging Film, Chen Chenwei, Wang Jiaxi, Yang Fuxin, Xie Jing, Tang Zhipeng

Food and Machinery

The controlled release technology of active compounds released from the active packaging films was reviewed. It was summarized mainly from three aspects, including the control technologies of the release rate for active compounds, its influence factors and release kinetic models. It was aimed to provide a reference for future research on the active packaging film.

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Study On The Basic Status And Relative Suggestions For Improvement Of Raw Material Management Of Health Food In China, Tian Ming, Fang Jun Jan 2019

Study On The Basic Status And Relative Suggestions For Improvement Of Raw Material Management Of Health Food In China, Tian Ming, Fang Jun

Food and Machinery

The management of raw materials for health foods is a key and difficult point in the registration and record-keeping management of health foods. The current situation of health food raw materials management was reviewed, and the problems existing in health food products in China was revealed. Moreover, some suggestions for improvement and further standardizing the registration and record-keeping of health food products were put forward.

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Elementary Study On The Construction Of Hplc Characteristic Chromatogramand Spectral-Effect Relationship Of Anthocyanin Extract In Onion, Xiao Ruixi, Wang Xinyue, Chen Huaguo, Zhou Xin Jan 2019

Elementary Study On The Construction Of Hplc Characteristic Chromatogramand Spectral-Effect Relationship Of Anthocyanin Extract In Onion, Xiao Ruixi, Wang Xinyue, Chen Huaguo, Zhou Xin

Food and Machinery

A high performance liquid chromatographic (HPLC) method was used to detect anthocyanin extract from onion in 10 regions and the common peaks were identified. The Pearson Correlation Analysis and Grey Relation Aanlysis were used to analyze the correlation between its common peaks, content, antioxidant activity (the ability to scavenge DPPH, ABTS free radicals) and AChE inhibitory activitiy. Result: According to the characte-ristics of HPLC and relative retention time of different batches of onion anthocyanins, and the characteristic chromatograms of onion anthocyanins were established. The chromatograms of anthocyanin extract from onion in 10 different regions were similar to the control fingerprints, …

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Study On Correlation Between Content Of Protein, Fat, Starch And Hedonic Score Of Ham Sausage And Measurement Based On Microphotography, Zhu Lintao, Wu Wenbiao Jan 2019

Study On Correlation Between Content Of Protein, Fat, Starch And Hedonic Score Of Ham Sausage And Measurement Based On Microphotography, Zhu Lintao, Wu Wenbiao

Food and Machinery

By using the ham sausages currently sold in Chinese market as studying materials, upright light microscope and photography system were employed in treating the stained slices of ham sausages. Photographs observable by naked eyes were obtained and the pixels occupied by the stained area of proteins, fats and starches were measured respectively while their percentages accounted for the pixels of total observed area were subsequently calculated. Results analysis indicated that the percentage of the pixels which were occupied by the stained area of proteins, fats or starches accounted for the pixels of total observed area was positively correlated with their …

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Effect Of Water Distribution And Protein Denaturation On The Texture Of The Product During Roasting Of Pork Jerky, Cao Yeping, Huan Yanjun, Gao Jing Jan 2019

Effect Of Water Distribution And Protein Denaturation On The Texture Of The Product During Roasting Of Pork Jerky, Cao Yeping, Huan Yanjun, Gao Jing

Food and Machinery

In order to clarify the relationship between moisture change and protein denaturation during pork roasting and its texture, the effects of different baking temperatures on the texture of pork mash were studied, combined with low field nuclear magnetic resonance and ATR-FTIR technology analyzes moisture changes and protein denaturation during baking. The results show that: (1) baking temperature has a significant effect on the shear strength and texture of pork, 65 ℃ is the key heat treatment temperature affecting pork tenderness. (2) Baking at 65 ℃, with the extension of heating, T21 T22 and T23 were gradually shifted …

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Rice Bran Polysaccharides Prevent Dss-Induced Colitis Through Mapk Signaling Pathway In Mice, Liu Jing, Guo Ting, Guo Tianyi, Zou Jiawen, Zhou Xiaotian, He Jie, Shi Yuhong, Luo Feijun Jan 2019

Rice Bran Polysaccharides Prevent Dss-Induced Colitis Through Mapk Signaling Pathway In Mice, Liu Jing, Guo Ting, Guo Tianyi, Zou Jiawen, Zhou Xiaotian, He Jie, Shi Yuhong, Luo Feijun

Food and Machinery

To assess the anti-inflammatory function and possible molecular mechanism of rice bran polysaccharide (RBP), DSS-induced colitis model was used in ICR mice. Pathological changes and gene expression were analyzed by histopathological analysis, RT-qPCR and Western blotting among of different experiment groups. The results showed that 500 mg/kg/day RBP could significantly improve the health status of mice and reduced colonic inflammation. RBP reduced the disease active index (DAI) score of DSS-induced mice and alleviated the damage of pathological tissue, with the improvement of the inflammation-related biochemical indicators. qRT-PCR analysis showed that RBP could decrease the mRNA expression level of inflammatory factors, …

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Effects Of Polyphenols From Areca Seed On Intestinal Microbes In Vitro, Cheng Huan, Wang Yuanliang Jan 2019

Effects Of Polyphenols From Areca Seed On Intestinal Microbes In Vitro, Cheng Huan, Wang Yuanliang

Food and Machinery

This study aimed to investigating the effects of the polyphenols from Areca seeds on young men’ s intestinal microbes in vitro through intermittent static anaerobic fermentation technology. The feces of 24 years healthy young men are taken as starter. The substrates of the control group (group C) and the experimental group (group P) with a purity of 74.09% were fermented in vitro at 2, 6, 12 and 24 h. pH value, polyphenol composition, short chain fatty acid (SCFAs) and microorganism index were measured by gas chromatography and high-throughput sequencing. The results showed that the polyphenols of the Areca-nut polyphenols had …

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Evaluation Of Aroma Components In Rosa Roxburghii Tratt Juice By Spme-Gc-Ms And Pca, Gu Yuanting, Peng Bangyuan, Ding Zhuhong Jan 2019

Evaluation Of Aroma Components In Rosa Roxburghii Tratt Juice By Spme-Gc-Ms And Pca, Gu Yuanting, Peng Bangyuan, Ding Zhuhong

Food and Machinery

We used 50/30 μm DVB/CAR/PDMS, 75 μm CAR/PDMS, 65 μm PDMS/DVB, 100 μm PDMS to enrich and concentrate aroma components of Rosa roxburghii Tratt juice for improving the accuracy and reliability of analyzing the aroma components by gas chromatography and comparing the consequence and sensitivity of extracting the aroma components by different fiber coating extractors. The aroma components of Rosa roxburghii Tratt juice were detected by GC-MS. We compared the quantity and content of aroma components by principal component analysis (PCA) and established the evaluation model of aroma quality. The results showed that: esters, alcohols, and terpenes were the main …

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Comparative Analysis Of Volatile Component Of South Stinky Tofu Brine By Spme-Gc-Ms Combined With Chemometrics, Tang Hui, Jiang Liwen, Xie Jing, Li Pao, He Jing, Chen Xiaoyi, Tan Jinping Jan 2019

Comparative Analysis Of Volatile Component Of South Stinky Tofu Brine By Spme-Gc-Ms Combined With Chemometrics, Tang Hui, Jiang Liwen, Xie Jing, Li Pao, He Jing, Chen Xiaoyi, Tan Jinping

Food and Machinery

Detected the volatile component by using head space-solid phase micro-extraction gas chromatography-mass spectrometry(SPME-GC-MS) combined with chemometrics methods of Shannon Entropy, correlation coefficient, Principal Component Analysis (PCA) etc. for evaluating, distinguishing and looking for the common flavor between five south stinky tofu brines in China. Results showed that a total of 161 flavor components were detected, with 76, 37, 29, 74 and 35 of them being present in the stinky tofu brine of STB1, STB2, STB3, STB4 and STB5, respectively. The main flavor compounds in five south stinky tofu brines were acids, phenolics and heterocyclics, such as acetic acid, propionic acid, …

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Adsorption Characteristics Of Moringa Seed Shell To Methylene Blue, Li Fengquan, Zeng Fankun, Zhong Jinfeng, Qin Xiaoli Jan 2019

Adsorption Characteristics Of Moringa Seed Shell To Methylene Blue, Li Fengquan, Zeng Fankun, Zhong Jinfeng, Qin Xiaoli

Food and Machinery

Used moringa seed shell as adsorbent, investigated the effects of adsorption time, particle size, temperature, initial concentration of solution and pH on the adsorption of methylene blue. Datas were fitted by adsorption isotherm model and kinetic model. The samples were characterized by scanning electron microscopy and infrared spectroscopy. The results showed that under the condition of adding 10 g/L of moringa seed shell, the optimum adsorption conditions were adsorption time 1.5 h, particle size ＞80 mesh, temperature 25 ℃, methylene blue solution concentration 200 mg/L and pH＞5. The adsorption process followed the Langmuir model and the pseudo-second-order kinetic model. The …

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Effect Of Maillard Reaction On Antioxidation Of Camellia Oleifera Seed Oil, Yang Nan, Luo Fan, Fei Xueqian, Zhong Haiyan Jan 2019

Effect Of Maillard Reaction On Antioxidation Of Camellia Oleifera Seed Oil, Yang Nan, Luo Fan, Fei Xueqian, Zhong Haiyan

Food and Machinery

In order to study the relationship between Maillard reaction products and antioxidant activity of Camellia oleifera seed oil, determined the Camellia seed oil treated with different heating time and temperature before and after heating was used to determine its oxidation stability time, moisture, browning degree and color value, and the content and oxidation resistance of Maillard reaction products. The results showed that the oxidation stability time of pressed Camellia seed oil after heating first increased and then stabilized. In the early stage of heating (20 min), the oxidation stability time increased most significantly. It increased by 2.10, 4.46, 4.93, 5.20 …

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On-Line Monitoring Of Emergency Pollution Of Ochratoxin A In Drinking Water By Flow Injection Chemiluminescence, Li Liang, Tang Shuze, Yang Panpan, Liu Qianyu, Wu Shizheng Jan 2019

On-Line Monitoring Of Emergency Pollution Of Ochratoxin A In Drinking Water By Flow Injection Chemiluminescence, Li Liang, Tang Shuze, Yang Panpan, Liu Qianyu, Wu Shizheng

Food and Machinery

Based on quenching effect of ochratoxin A on chemiluminescence (CL) reaction of luminol-NaIO4 system catalyzing by Tween 20, a novel flow-injection chemiluminescence method was developed for the rapid on-line determination of possible sudden pollution of ochratoxin A in drinking water. Under the optimum conditions of response surface experiment, the linear range for ochratoxin A was 0.006～1.000 μg/mL with a detection limit of 1.74×10-3 μg/mL and recovery of 80.6%～92.4%. The relative standard deviation (RSD) was 1.68% by analyzing samples containing 0.02 μg/mL ochratoxin A (n=11). This method was founs convenient to operate, and couls be applied to the rapid emergency …

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The Safety Of Genetically Modified Food: A Flat Statement Based On The Facts Of Experimental Study And Logic, Cheng Yingbo Jan 2019

The Safety Of Genetically Modified Food: A Flat Statement Based On The Facts Of Experimental Study And Logic, Cheng Yingbo

Food and Machinery

A universality recognition to gene and gene modification was mentioned and a concept of “partial gene” etc was proposed according to the practice of gene operations in these years. The opinions and their bases at the two sides of GMF safety argument was screened and teased out entirely. Based on the datum in CNKI and Web of Science, It was discovered that the experimental theses were very few, which can not support this argument at all. Some urgent problems were discussed logically and it has been pointed out that mankind would eat GMF inescapablely while improving and restricting in the …

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Criminal Law Regulation Of Network Food Safety Crime, Zhang Yu Jan 2019

Criminal Law Regulation Of Network Food Safety Crime, Zhang Yu

Food and Machinery

Under the background of the popularization of the network and the rapid development of the logistics industry, due to the imperfection of the current food governance legal system and the lack of the governance ability, the criminal problems in the field of food safety have become increasingly prominent. That is, the traditional means of crime and the new means of crime intertwined, the network and logistics crime converged, the victimized area was expanding and the variety of crime involved was diversified, the reason was that the subject of criminal supervision in the field of network food safety was not clear. …

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Study Of Resonant Acoustic Field On Ultrasonic Micronization Of Cellulose, Yu Jian, Wu Xue, Liu Bing, Zhang Yuan, Xu Xuedong Jan 2019

Study Of Resonant Acoustic Field On Ultrasonic Micronization Of Cellulose, Yu Jian, Wu Xue, Liu Bing, Zhang Yuan, Xu Xuedong

Food and Machinery

Studied the effect on micronization of cellulose in 20 kHz ultrasonic crushing sound field conditions. It was determined and selected the geometric parameters of the ultrasonic resonant reactor for cavitation crushing field by using the analysis of sound propagation in a cylindrical pipe. Combining with the acoustic modal analysis, the height of liquid level foe resonant reactor was obtained, which could enhanced acoustic energy density distribution. Used the finite element method to analyze the acoustic field of ultrasonic material crushing cavitation. Finally, The ultrasonic crushing experiments were conducted with the resonant reactor liquid level and the non-resonant reactor liquid level …

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Simulation Analysis Of Agitating Flow Field In Largethreonine Fermentor Based On Fluent, Li Jin, Shi Xiudong, Wang Chen, Feng Weijian Jan 2019

Simulation Analysis Of Agitating Flow Field In Largethreonine Fermentor Based On Fluent, Li Jin, Shi Xiudong, Wang Chen, Feng Weijian

Food and Machinery

The flow field in large threonine fermentor as the research object, by using Fluent software, combining the parameters of threonine fermentation process, and the method of computational fluid dynamics with Multiple Reference Frame and Eulerian multiphase flow model was used to the simulation of single-phase flow and gas-liquid two-phase flow in the mixing process of four stage impeller assembly in fermentor. Distribution of fluid field、power of impeller and volume fraction of gas-phase were also analyzed. The results show that the power of submerged impeller was not affected by the increase of liquid level, and the increase of density in the …

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Improved Design Of Banana Stalk Fiber Extraction Blade, Li Shuang, Liang Dong, Zhang Xirui, Li Yue Jan 2019

Improved Design Of Banana Stalk Fiber Extraction Blade, Li Shuang, Liang Dong, Zhang Xirui, Li Yue

Food and Machinery

In view of the current unsatisfactory processing performance of existing banana stalk fiber extraction machine， by drawing on the design principle of manual razor, design a two-layer asymptotic blade structure to optimize its performance. A comparison test was made between the improved blade and the ordinary L-shaped blade. The results showed that the fiber extraction rate increased from 14.50% to 16.03%, and the fiber content decreased from 14.21% to 9.85%. The processing efficiency was more stable when multiple pieces of stalks were stacked.

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Effects Of Extracellular Products Of Several Bacterial On The Growth Andmetabolism Of Shewanella Putrefaciens At Low Temperature, Xie Jing, Yie Jingxin, Yang Shengping, Ding Jingyu, Qian Yunfang Jan 2019

Effects Of Extracellular Products Of Several Bacterial On The Growth Andmetabolism Of Shewanella Putrefaciens At Low Temperature, Xie Jing, Yie Jingxin, Yang Shengping, Ding Jingyu, Qian Yunfang

Food and Machinery

The object of this study was to in vitro evaluate the effect of extracellular products of P. fluorescens, A. hydrophila and A. sobria on the growth and metabolism of S. putrefaciens at low temperature. The extracellular products of these three strains were mixed with sterilized brain heart infusion broth (BHI), and S. putrefaciens were inoculated into the mixed culture, and the quality indicators including microbiological, extracellular protease, biofilm, TVB-N, amino acid and putrescine changed during 12 days at 4 ℃. The results showed that extracellular products of P. fluorescens, A. hydrophila and A. sobria had little effect on the lag …

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The Change Of Volatile Compounds In Sichuan Baikou Baby Ginger During Storage, Fu Yunyun, Yan Xiaoqian, Yuan Bo, Zhang Jing, Jiang Cheng, Wang Pengling, Zhao Jianglin, Chen Anjun Jan 2019

The Change Of Volatile Compounds In Sichuan Baikou Baby Ginger During Storage, Fu Yunyun, Yan Xiaoqian, Yuan Bo, Zhang Jing, Jiang Cheng, Wang Pengling, Zhao Jianglin, Chen Anjun

Food and Machinery

In order to study the change of volatile compounds in baby ginger during sandy soil storage, the baby ginger were stored at proper temperature after selection, classification and sterilization treatment. Solid phasemicroextraction coupled with gas chromatography-mass spectrometry (SPME-GC-MS) was used to measure the volatile compounds of baby ginger in different storage time. There were totally 77 volatiles compounds in baby ginger including hydrocarbons (47), alcohols (16), ketones (1), aldehydes (4), ethers (9).Among all these volatiles compounds, the contents of hydrocarbon and aldehyde were significantly increased at 30 days of storage (P<0.05). There were nine volatile components content, L-za-pinene, camphene, 2, 6-octadiene, 2, 6-dimethyl, reverse-yl-acycloacene, bergamene, 2-zitol, citronella, citronella, and citral,increased significantly with the extension of storage time in baby ginger, the contents of these substances at the time of 30 days, were 5.09, 7.89, 6.73, 10.48, 153.75, 11.11, 8.21, 11.73, 24.96 and 14.65 times respectively.

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Researching Of Effects On The Oxygen Volume Fraction Of Air Infiltration In The Compartment With Controlled Atmosphere Transportation, Yang Songxia, Zhu Lixue, Wang Liuling, Lu Enli, Guo Jiaming Jan 2019

Researching Of Effects On The Oxygen Volume Fraction Of Air Infiltration In The Compartment With Controlled Atmosphere Transportation, Yang Songxia, Zhu Lixue, Wang Liuling, Lu Enli, Guo Jiaming

Food and Machinery

In order to master the changing regulations of oxygen volume fraction in the controlled atmosphere transportation compartments, the air infiltration characteristics caused by the thermal pressure and wind pressure were analyzed, and then the influences of air infiltration to the oxygen volume fraction was researched, and the verification experiment was also carried out. The results shown that the theoretical value and experimental value of oxygen volume fraction in the compartment were basically identical, which indicated that the model of air infiltration model was accurate. Air infiltration was mainly caused by wind pressure, and the air infiltration volume was very small …

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Study On Preheating And Ultrasound-Assisted Extraction Of Polyphenols From Corn Silk And Their Antioxidant Activities, Xu Yingyi, Xu Yanxia, Wang Yu, Lin Wei, Wu Hongyan, Meng Xiangwen Jan 2019

Study On Preheating And Ultrasound-Assisted Extraction Of Polyphenols From Corn Silk And Their Antioxidant Activities, Xu Yingyi, Xu Yanxia, Wang Yu, Lin Wei, Wu Hongyan, Meng Xiangwen

Food and Machinery

Ultrasonic-assisted ethanol extraction after heating was used to extract polyphenols from corn silk. On the basis of single factor test, the response surface optimization test was carried out on polyphenols by ultrasonic-assisted ethanol extractions, and the antioxidant activity of the extracted polyphenols was studied. The results showed that the optimum extraction conditions were as follows: the ratio of solid to liquid 1∶22 (g/mL), the volume fraction of ethanol 60%, the ultrasonic time 32 min, and the ultrasonic temperature 60 ℃，the extraction rate of the polyphenol from corn silk was (6.49 ± 0.23)%. The scavenging rates of DPPH，hydroxyl and ABTS free …

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Determination Of The Polyphenols Contents In Lotus Bee Pollen Soluble Dietary Fiber By Different Mothods And Study On Its Effects On Growth Of Microorganism, Zheng Hui, Yang Yong, Zeng Yiqiong, Liang Qianqian, Shan Suo, Li Shunxiang Jan 2019

Determination Of The Polyphenols Contents In Lotus Bee Pollen Soluble Dietary Fiber By Different Mothods And Study On Its Effects On Growth Of Microorganism, Zheng Hui, Yang Yong, Zeng Yiqiong, Liang Qianqian, Shan Suo, Li Shunxiang

Food and Machinery

Bee Pollen Soluble Dietary Fiber (BPSDF) was extracted from Lotus bee pollen by cellulase enzymatic extraction, acid solution extraction and alkali solution extraction. The effects of three extraction methods on the polyphenols contents and the growth of harmful bacteria and beneficial bacteria were studied.The results showed that the polyphenols in BPSDF were mainly in free form. The contents of free polyphenols in BPSDF were 81.16%, 80.34% and 69.59% respectively by cellulase enzymatic extraction, acid solution extraction and alkali solution extraction. The contents of free phenol and total polyphenols in BPSDF were relatively higher by cellulase enzymatic extraction,and the content of …

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Study On Refining Process And Properties Of Rapeseed Peptides, Yao Yijun, Wang Lifeng, Yin Shi, Xu Feiran, Shi Jiayi, Ju Xingrong Jan 2019

Study On Refining Process And Properties Of Rapeseed Peptides, Yao Yijun, Wang Lifeng, Yin Shi, Xu Feiran, Shi Jiayi, Ju Xingrong

Food and Machinery

In this study, the crude rapeseed peptide was used as the research object. After treatment with powdered activated carbon, peptide solution was adsorbed onto DA201-C macroporous adsorption resin and then desorbed by ethanol to obtain rapeseed refined peptides (RP75). The basic composition, antithrombotic activity, anti-inflammatory activity and amino acid composition of rapeseed refined peptides (RP75) were also analyzed. The results showed that the optimum process for the refining of the DA201-C macroporous adsorption resin were peptide concentration 30 mg/mL, flow rate 3 BV/h, pH 4.5 and desorption concentration of the ethanol 75%. Peptide content was 74.94%, no glucosinolate or phytic …

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Study On Extraction Process Of Polyphenols From Atractylodes Macrocephalakoidz Grown In Qimen And Its Antioxidant And Antibacterial Activities, Hu Changyu, Dai Yi, Wang Yaqun, Lu Weiwei, Wang Weidong, Wu Yongxiang Jan 2019

Study On Extraction Process Of Polyphenols From Atractylodes Macrocephalakoidz Grown In Qimen And Its Antioxidant And Antibacterial Activities, Hu Changyu, Dai Yi, Wang Yaqun, Lu Weiwei, Wang Weidong, Wu Yongxiang

Food and Machinery

The present study aimed to optimize the process parameters for the surfactant sodium dodecyl sulfonate (SDS)-ultrasonic extraction technology of polyphenols from Atractylodes macrocephala Koidz grown in Qimen (Qi Baizhu). The effects of polyphenols from Qi Baizhu (QBP) on antioxidant and antibacterial activities were explored. The results showed that the optimal process conditions were as follows: SDS concentration 0.47%, extraction temperature 48 ℃, ultrasonic power 150 W, ethanol concentration 64%, extraction time 15 min, and solid-liquid ratio 1∶25 （g/mL）. Under these conditions, the content of QBP was (38.53±0.51) mg/g. QBP exhibited strong DPPH and ABTS free radical scavenging capacities with IC …

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