Food Science Commons^™

Cold Plasma Treatment Of Biodegradable Films And Smart Packaging, Shashi Pankaj

Doctoral

Cold plasma is an emerging technology offering many potential applications for food packaging. While it was originally developed to increase the surface energy of polymers, enhancing their adhesion and printability, it has recently emerged as a powerful tool for surface sterilisation of both food and food packaging materials. The food packaging industry is still dominated by petroleum derived polymers but in the past few decades there has been significant interest in the development of environment friendly, biodegradable green polymers. In this study, the interaction and effects of cold plasma with biopolymer based packaging materials (polylactic acid, zein, sodium caseinate, starch, …

Simulation And Validation Of Radio Frequency Heating Of Shell Eggs, Soon Kiat Lau

Department of Food Science and Technology: Dissertations, Theses, and Student Research

Finite element models were developed with the purpose of finding an optimal radio frequency (RF) heating setup for pasteurizing shell eggs. Material properties of the yolk, albumen, and shell were measured and fitted into equations that were used as inputs for the model. When the egg was heated by itself, heating tend to be focused at the air cell to result in a “coagulation ring.” The focused heating near the air cell of the egg prevented satisfactory pasteurization of the egg, but deeper analysis of the simulation results offered a new perspective on how non-uniform RF heating could occur in …

Influence Of Native And Processed Cereal Grain Fibers On Gut Health, Junyi Yang

Department of Food Science and Technology: Dissertations, Theses, and Student Research

Cereal fibers that can be metabolized by gut microbiota have been shown to promote the growth of beneficial bacteria in the gut. Increased consumption of cereal fibers may improve host / gut microbiota interactions in obesity and other metabolic diseases by normalizing gut dysbiosis. The present dissertation describes four research projects to assess the impact of cereal dietary fibers on gut microbiota and host metabolism. In the first study, we determined the treatment temperatures for production of soluble, non-digestible, feruloylated oligo- and polysaccharides (FOPS) from maize bran and wheat bran, and determined the fermentation properties of partially purified FOPS from …

Growing South Dakota (Summer 2015), College Of Agriculture &. Biological Sciences

Growing South Dakota (Publication of the College of Agriculture, Food and Environmental Sciences)

[Page] 2 Exciting New Era Underway: New Facilities & New Degree Offerings Coming To Fruition
[Page] 5 USDA Report Touts Agriculture Among Best Fields For College Grads
[Page] 6 Critical Need: Essential Services Of ADRDL Need Support For Modernized Facility
[Page] 8 Quarterly Colloquium: State's Ag Leaders Collaborate
[Page] 9 Profiles In Leadership: Developing A Museum To Enrich And Transform Lives
[Page] 10 Productive Partnerships: Collaboration Between Producers & Researchers Guides Research Farm Efforts
[Page] 12 Coordinated Effort: SDSU's John Ball Serves Dual Role To Benefit South Dakota's Trees
[Page] 14 Progressive Perspective: Dan Oedekoven Reflects On Extension's Evolution
[Page] …

Evaluation Of Xanthan/Enzymatically Modified Guar Gum Mixtures In Oil-In-Water Emulsions, Pavan Kumar Chityala

Masters Theses & Specialist Projects

Oil-in-water emulsions have wide range of applications in food industry because of their structure-forming properties, and as delivery systems of polyunsaturated fatty acids into foods. The thermodynamic instability of oil and water, and high susceptibility of unsaturated fatty acids to oxidation lead to physical and oxidative stability in oil-in-water emulsions. These instability processes are generally controlled by incorporating proteins and polysaccharides into oil-in-water emulsions. The objective of this study was to evaluate xanthan/enzymatically modified guar (XG/EMG) polysaccharides on the physical and oxidative stability of 2 wt% whey protein stabilized oil-in-water emulsions containing 20% v/v menhaden fish oil. Enzymatic modified guar …

Container Vegetable Gardening, Terri James, David Lott

Nebraska Cooperative Extension: Faculty and Staff Publications

If well-managed, vegetables grown in containers can provide high-quality produce in a small space.

Container vegetable gardening is a wonderful option for people who have limited space, impaired physical mobility, or conditions that interfere with in-ground gardening, such as poor garden soil. It also can help avoid problems with soilborne diseases and nematode pests that can exist in the soil in traditional, in-ground gardens. People who do not have access to a garden space, or simply do not want to grow a full-scale garden, may choose container vegetable gardening to provide them with enjoyment and produce. Containers are available in …

Preferences And Nutrient Composition: The Impact Of Flour Types On Battered Fried Food, Lobat Siahmakoun

Graduate Theses and Dissertations

This study investigated the impact of different flour-batter types on protein rich food in regard to people’s overall liking and sensory preferences (saltiness, flavor, texture, moisture, and color). In addition, all battered fried chicken, fish, shrimp, pork, and beef were analyzed for fat, calories, and protein content in the Central Analytical Laboratory at the University of Arkansas. Two hundred thirty-five participants completed the questionnaire containing five major sections. Respondents evaluated samples of battered fried chicken, fish, shrimp, pork, and beef using all-purpose flour (APF), rice-flour (RF), and potato flour (PF). Data was analyzed using binomial analysis and paired sample t-test …

Effects Of Food Label Education On Consumers' Sensory Perception And Awareness In Chicken Meat, Shilpa Samant

Graduate Theses and Dissertations

Recently, sustainability and process-related label claims have gained immense popularity especially for meat products like chicken. Apart from providing consumers with required product information, these labels have an impact on consumer perception and purchase behavior. The objective of this study was to determine whether providing label information affects consumers’ awareness and attitude toward the claims found on chicken products. Additionally, it was analyzed if enhanced label understanding affects consumers’ sensory and quality perceptions along with purchase intent. A total of 110 participants were randomly distributed into 1 of 3 types of education sessions: (1) reading a flyer (passive learning), (2) …

Effects Of Soybean Pectin On Blood Glucose And Insulin Responses In Healthy Men, Melissa Ann Jones

Graduate Theses and Dissertations

The goal of this study was to examine the effects of soy pectin on postprandial plasma glucose and insulin responses in healthy adult males␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣␣ intestinal microbiota to determine if differences in weight or body mass index would be linked to differences in microbiota populations. Pectin is a soluble fiber with demonstrated health benefits such as the ability to lower blood glucose and cholesterol, increase satiety leading to lower caloric intake, improve insulin resistance and lower inflammation. These benefits suggest that pectin may help in prevention and treatment of type II diabetes. Soy pectin is extracted from hulls, a waste product …

Shiga Toxin-Producing Escherichia Coli (Stec) Detection Strategies With Formalin-Fixed Stec Cells, Christopher Adam Baker

Graduate Theses and Dissertations

Certain pathogenic Escherichia coli known as Shiga toxin (Stx)-producing Escherichia coli (STEC) are commensals in cattle, and typically cause bloody diarrhea in humans once the Stx toxin is secreted in invaded intestinal epithelial cells. Infections with STEC cells can lead to hemolytic uremic syndrome, which is commonly associated with kidney failure. Several STEC serogroups have been declared adulterants in raw, non-intact ground meat, and future regulations could potentially lead to a higher number of STEC serogroup detection strategies for these pathogenic microorganisms. Microbiological research laboratories may benefit from formalin-fixed STEC cells for periodic (daily, weekly, monthly, among others) instrument validation/calibration …

On-Line Detection Research Of Apple’S Soluble Solids Content Of Diffuse Transmission Technology Based On Near Infrared Spectroscopy, Lu Huishan, Chen Pengqiang, Yan Hongwei, Gao Qiang, Wang Fujie

Food and Machinery

To study on internal quality of the fruit, in order to improve the detection speed and robustness, near infrared spectral diffuse transmission is applied to on-line detection research, using partial least squares regression (PLSR) algorithm combined with different pre-processing methods to establish the quantitative models of soluble solids content (SSC) of internal quality of the apple. The results of final model were achieved as follow: the model was stability which was used by first derivative combined with multiplicative signal correction (MSC), rootmean square errors of calibration and rootmean square errors of prediction are 0.17 and 0.39, respectively, the correlation coefficient …

Analysis And Evaluation On Heavy Metal Content Of Root Vegetables In Three Gorges Reservoir, Qin Longbing, Li Zuxiang, Yang Yurong, Xiang Yanjun, Gou Tianpeng, Tang Huali

Food and Machinery

In order to evaluate the heavy metal contamination and the safe levels of vegetables, Six root vegetables in hinterland of reservoir area were detected by microwave digestion-flame atomic absorption spectrophotometer, the pollution of Pb, Cd, As, Sn, Cu and Cr in vegetables was evaluated by single pollution index and comprehensive pollution index. The result showed that the content of As, Sn and Cr in root vegetables on selling exceeded the standard, and were over the standard 27.08%, 12.50% and 8.33%, respectively. Single pollution index showed that as in carrot, Cr in carrot and radish were in the warning level, still …

Characteristic Of Water Holding Capacity And Color Changes Of Tan Sheep At Different Storage Temperatures, Wang Wei, Luo Ruiming, Li Junli, Zhang Ting

Food and Machinery

In this paper, the water holding capacity and color of Tan sheep were investigated under various storage temperatures. The postmortem Tan sheep preservation at 0～4 ℃ and 15 ℃, dynamic of pH, cooking loss, water holding capacity, dropping loss and meat color were measured at 1～7 d during preservation. The research results indicated that Tan sheep muscle which were preserved at 15 ℃ had fast decreasing speed of pH value, rapid speed of water holding capacity rally and worse meat color. Cooking loss of Tan sheep at 0～4 ℃ showed no significant differences from 15 ℃（P>0.05), dripping loss, water …

Study Of Optimization Of Extraction Process Of Polysaccharides From Zizyphus Jujuba Cv. Muzao With Acidic Buffer By Response Surface Methodology, Li Huanyu, Wang Min, Li Wuxia, Wang Xiaoqin, Du Lijuan, Ji Xiaolong

Food and Machinery

With extraction ratio as response from Zizyphus jujuba cv. Muzao and citrate buffer solution as the extraction solvent, ultrasonic extraction technology were optimized by response surface methodology (RSM). The results showed that optimal ultrasonic extraction conditions were liquid-solid ratio of 23.1︰1(V︰m), extraction temperature of 68 ℃ and extraction power of 420 W, taking citrate buffer solution at pH 5.6 as the extraction agent. Under the optimal extraction conditions, and the resultant polysaccharides yield was (67.38±0.16)%, which was close to the predicted value of 67.63%. The results demonstrated that this method was feasible, and provided reference data for the extraction of …

Research On Legal Regulation Of Genetically Modified Food, Dou Yusi, Jiang Wenyu

Food and Machinery

GM food is an important achievement in the development of biotechnology, and it has two sides as any other achievements. Taking into account the special nature of GM food, it needs to make effective legal regulation to regulate the impossible problems. Europe, Japan and other developed countries establish experimental and listing approval system, a isolation system and labeling system specifically. The US also sets up legal principle of non discrimination for supervision of GM food. Combined with the present situation of legal regulation on GM food in China, several steps should be taken, for adopting formal legislation, enacting specific workable …

Criminal Law And Regulation Of Food Safety In China, Zhang Fengxue

Food and Machinery

There are four major problems existing in China's food safety supervision and management. They are imperfection in the system of laws on food safety, obvious defect of current criminal law governing food safety crimes, insufficient understanding for supervisory staff to hazard of food safety crimes, absence of workable accountability system for supervisory staff who spoil their duty. Those existing problems have caused frequent crisis of food safety. To tackle these problems, a legally governing system, which should be mainly supported by the system of criminal law, needs to be established to unify names of crime for food safety crime and …

Flow Characteristics Analysis And Fluid Distribution Simulation For Ion Exchange Column Using Cfd Method, Lin Haibo, Pan Wangui, Wang Weiping, Ding Li, Yang Jian

Food and Machinery

Based on the numerical simulation method on computational fluid dynamics (Computational fluid dynamics, CFD), and using anion exchange resin (717) as internal chromatography media, the fluid distribution and flow resistance characteristics in ion exchange column were studied respectively. For the convenience of simulation, water was selected as feed liquid, at the flow rate of 3 m3/h, appeared laminar flow state in the exchange column. On the assumption that the fluid uniform premise, the flow resistance characteristics for the column ion exchange resin filler was simulated by the two-dimensional porous media model, and the effects of the exchange column of fluid …

Research And Simulation On Drive System Of Cam Indexers Revolving Distiller’S Yeast Press Machine, Wei Jin, Qin Yu, Shao Liangfeng

Food and Machinery

Used the globoid indexing cam replace hydraulic motor and disc spring to control machine turntable. Determined the parameters of two levels of driving gear, and figured out resisting moment computation formula. Used Pro/E to build models and assemble, added the corresponding constraints during in Adams importing, then made a kinematics simulation. The results showed that turntable, under the globoid indexing cam controlled, can make the transmission and position integration, and the positioning error under the bounds of allowed. This paper demonstrates the feasibility of using globoid indexing cam to replace hydraulic motor control turntable, provide theoretical basis for the improvement …

Cfd Simulation Of Airflow Distribution With Different Inlets In Evaporative Condenser, Zhu Jinlin, Xie Jing, Wang Jinfeng, Du Zizheng, Zhou Hongjian

Food and Machinery

The variation of the internal temperature field and airflow field in the evaporative condenser was discussed when it was worked under an unsteady state numerical simulation by using CFD software. The performance of internal temperature field and airflow field was analyzed when the condenser worked within 5 s with different air inlet direction (single inlet, double inlets, and three inlets). The simulation results showed that when the condenser worked with single inlet, the cold airflow was easily infiltrated the bottom of the condenser horizontally, then rose and got heat exchange with coils under the effect of density difference. The condenser …

Optimizational Design And Simulation Of High-Speed Parallel Manipulator For Seed Separator, Fan Yong, Wang Zhengcan, Wang Hongbin, Shi Yongjian

Food and Machinery

For seed separator actuator working characteristics of the low speed and low load, a small high-speed parallel manipulator was designed as seed separator of actuators. Using SolidWorks and MATLAB software simulation technology, established the simulation model of robot hand fully, and Usesd full performance indicators to make optimization design for parallel mechanism. The results show that the manipulator work within the scope of the condition number of jacobian matrix is small, smooth fluctuations, and manipulator kinematics performance and driving performance are good. Research on the establishment of the prototype of the manipulator and the control method has certain reference value.