Digital Commons Network^™

Effect Of Sodium Chloride On 3d Printing Performance And Gel Properties Of Silver Carp Surimi System, Zhang Zhichao, Chen Xu, Wang Shaoyun, Cai Xixi

Food and Machinery

Objective: Improve 3D printing performance and gel properties of silver carp surimi system. Methods: By optimizing 3D printing parameters, the 3D printing process is associated with material rheological properties and 3D printing performance. The effects of sodium chloride addition on rheological properties, 3D printing properties, gel strength, moisture properties and microstructure of silver carp surimi were investigated. Results: The addition of sodium chloride decreased the loss modulus of surimi in a dose-dependent manner, but significantly improved the shear recovery performance, reduced the cooking loss of surimi system and increased the water retention of surimi system. The best gel strength and …

Comparison Of The Activities And Cryoprotective Mechanism Of Two Antifreeze Peptides Derived From Silver Carp Parvalbumin, Li Jun, Fu Yuting, Yu Jian, Li Xianghong, Liu Yongle, Wang Faxiang

Food and Machinery

Objective: Explore the cryoprotective mechanism and structure-activity relationship of antifreeze peptides derived from silver carp parvalbumin. Methods: Using differential scanning calorimetry and molecular dynamics simulation to compare activity, structure and mode of action of two typical peptides. Results: Pv-AFP 1 （KAADSFNH KAFFAKVG） had a stable α-helix structure, while Pv-AFP 2 （KAADSFNHKAF） tended to exhibit random coil. The thermal hysteresis activity of Pv-AFP 1 was 0.87 ℃, which was higher than Pv-AFP 2 （0.74 ℃）. Molecular dynamics simulations showed that Pv-AFP 1 could interact with 53 water molecules, and could form 16 hydrogen bonds to adsorb onto the surface of …

Enrichment Of Γ-Aminobutyric Acid Based On Rice Heating And Humidification Technology, Xu Bin, Mi Xingqiong, Bai Qiong, Xu Jinlong, Liu Shuyi

Food and Machinery

Objective: This study aimed to improve the quality of brown rice. Methods: The content of γ-aminobutyric acid (GABA) and the activity of glutamate decarboxylase were used as indicators to study the effect of enrichment conditions on GABA content. Based on the optimal parameters, GABA content in each part of the grain was analyzed to reveal the migration law of GABA. Finally, the effect of the method on the quality of brown rice was analyzed and compared with the soaking method. Results: The highest GABA content was obtained when the water content of the raw material was 14.5% with the final …

Rapid Identification Of Drug Resistance Of Escherichia Coli Based On Electrochemical Square Wave Voltammetry Of Resazurin, Qi Chuchu, Lu Lisheng, Ren Jiali, Zhou Kai, Zhang Xinfang, Zhang Ziying

Food and Machinery

Objective: To evaluate the antibiotic resistance of five foodborne Escherichia coli clinical isolates to ciprofloxacin, gentamicin and ampicillin. Methods: Based on the theory of electron transfer during bacterial energy metabolism and the introduction of resazurin as a redox probe, an electrochemical square wave voltammetry （SWV） method based on bladed tensin-mediated rapid identification of E. coli drug resistance was established. Results: The electrochemical square wave voltammetry values of E. coli at different concentrations mediated by resazurin were determined, and there was a good linear relationship between the E. coli concentration and the oxidized peak current （I） of resazurin in …

Determination Of Six Human Milk Oligosaccharides In Dairy Product By Precolumn Derivatization High Performance Liquid Chromatography With Fluorescence Detection, Li Qiqi, Huang Jiale, Mu Shuyi, Li Qishan, Huang Jingjun

Food and Machinery

Objective: To astablish a strong popularity, high sensitivity of six human milk oligosaccharides in dairy product by precolumn derivatization high performance liquid chromatography-fluorescence method. Methods: Aquatic product sample was precipitated with glacial acetic acid, filtration by using the filter paper. It was derived by 2-aminobenzamide solution. The extracts were centrifuged and filtered by using the organic filter membrane and analyzed by using a AdvanceBio Glycan Map column to be separated and detected，employing acetonitrile-50 mmol/L ammonium formate solution （pH 4.4） as the mobile phase for gradient elution. Results: Under the experimental conditions, six human milk oligosaccharides in dairy product were linear …

Preparation, Structural Characterization, And Performance Analysis Of Polyvinyl Alcohol/Fish Gelatin/Solanum Nigrum Anthocyanin Composite Film, Ouyang Lanlan, Deng Na, Yin Shixian, Rong Zhixing, Wang Jianhui

Food and Machinery

Objective: Screening of polyvinyl alcohol-fish gelatin-solanum nigrum anthocyanin （PVA/FG-SNA） composite packaging film with optimal structure and properties. Methods: Optimizing the fabrication process of films through orthogonal tests, and using thickness, moisture content, water vapor permeability （WVP）, tensile strength （TS）, elongation at break （EB）, Fourier infrared spectroscopy （FTIR）, X-diffraction （XRD）, scanning electron microscopy （SEM）, and thermogravimetric （TG） analysis to explore the effects of SNAs with different mass fractions on the properties and microstructures of PVA-FG film; In addition, the pH color response and NH₃ sensitivity of the PVA/FG-SNA composite film were monitored. Results: When the mass ratio of PVA-to-FG, heating …

The Presentation Techniques Of Technological Sense In Food Packaging Design, Tang Hua

Food and Machinery

Integrating technological elements or showcasing technological features in food packaging design can present unique visual effects and functional value, enhancing product image and brand value. This paper further optimizes the presentation effect of technology in food packaging design and enhances the market competitiveness of products through clear design positioning, exploration of diverse expressions, integration of traditional culture, and reflection of humanistic care.

Simulation Study Of Controlled Atmosphere Storage Environment For Sweet Potatoes Using Modular Turnover Boxes, Hu Rusheng, Liu Yin, Meng Zhaofeng, Zhang Fan, Wu Feijun

Food and Machinery

Objective: To mitigate unfavorable factors during the packing, transportation, and storage of fruits and vegetables, a foldable, preassembled turnover box was designed based on the premise of recycling. Methods: Standardized boxes were used to hold sweet potatoes, which were considered long rotating ellipsoids, and the storage environment was modeled. A porous medium model, a species transport model, and a local non-thermal equilibrium model were used to study the temperature, humidity, speed, O₂ volume fraction, and CO₂ volume fraction distributions in the cargo area during the curing warming, post-curing cooling, and storage stages. Results： 40 ℃ was the optimum …

Study On Hypoglycemic And Lipid-Lowering Activity Of Shrimp Shell-Derived Enzymatic Hydrolysate And Peptide Sequence Function Analysis, Han Pengwei, Yi Tong, Li Honghui, Wu Hao, Li Yan, Chu Wuying

Food and Machinery

Objective: The PCSPHs were prepared by enzymatic hydrolysis of Procambarus clarkii shells, and their hypoglycemic and lipid-lowering activities in vitro were evaluated and peptide sequence were analyzed. Methods: Different crayfish shell proteolysates were prepared by hydrolysis of pepsin, alcalase protease, trypsin, flavor protease and papain, and their in vitro hypoglycemic and lipid-lowering activities were evaluated and peptide sequences were determined. The peptides sequence of Procambarus clarkii shells was identified by LC-MS/MS. Taking the crystal structure of the nuclear receptor PPARγ ligand binding region as the target, Autodock vina was used to simulate molecular docking to obtain crayfish shell peptides …

Study On The Numbing Substance Of Polygonatum Rhizoma Based On Steaming Treatment, Wang Jiaxuan, Wang Feng, Li Qingming, Li Wenjia, Su Xiaojun

Food and Machinery

Objective: To discover the material substances of the numbing characteristics in Polygonatum Rhizoma. Methods: Polygonati Rhizoma from eight regions were processed by the "nine-steam-nine-bask" method, and its content changes of saponin, polyphenol and calcium oxalate crystal at different steaming times were determined. The degree change of numbing was determined by the cell hemolysis test and sensory properties, and a correlation analysis of numbing was conducted. Results: With the increase of steaming times, the contents of polyphenol and saponin in Polygonati Rhizoma from different regions were initially increased and then decreased, while the content of calcium oxalate crystal and hemolysis …

Isolation, Identification And Control Of Spoilage Microorganisms In Xiangwei Stewed Bean, Peng Xin, Li Bingxin, Ma Fang, Zhan Liangzhong, Wen Ming, Zhou Xiaohu

Food and Machinery

Objective: To better control the growth of spoilage microorganisms, and ensure the food safety of Xiangwei Luodou dry. Methods: The putrefactive microorganisms in Xiangwei dried tofu were identified by plate scribing method, colony morphology observation, Gram staining, 16S rDNA and ITS sequence. Results: A total of 9 strains were isolated andscreened. KZ2780-3 and KZ2780-4 are Bacillus subtilis, NZ2559-1 is Bacillus cereus, and JZ2559-5 is Bacillusamylolyticus amyloliquefaciens, FZ2559-2 for Klebsiella pneumoniae, SZ2641-5 for Enterococcus faecium, RZ2641-7 for Staphylococcus haemolyticus, BZ2780-1 for Acinetobacter baui, CZ2780-5 for Penicillium citri. Conclusion: The strains causing dry rot …

Optimization Of Preparation Process And Preliminary Structure Characterization Of Polysaccharides From Lemon Peel With High Hypoglycemic Activity, Jiang Zhonggui, Li Di, Li Kaifeng, Ma Li, Gu Xin

Food and Machinery

Objective: This study aimed to optimize the preparation process of polysaccharides from lemon peel and screen out the components with high hypoglycemic activity. Methods: Ultrasonic assisted enzymatic extraction of lemon peel polysaccharide, combined with response surface test to explore the best extraction process, through DEAE-52 anion chromatography and Sephadex G-100 gel column chromatography separation and purification to obtain a homogeneous polysaccharide fraction (named as LPs-1a). The effective hypoglycemic components of lemon peel polysaccharides were screened by α-glucosidase and their relative molecular weight, monosaccharide composition and characteristic groups were analyzed. Results: The optimal extraction process of lemon peel polysaccharide was …

Research On Efficient Production And Quality Optimization Of Yuba Based On Soymilk Solids Concentration And Slurry Depth Control, Zhang Yan, Ren Guangyue, Duan Xu, Liu Wenchao, Wang Zhe

Food and Machinery

Objective: Determine the appropriate soymilk concentration and slurry depth to provide a theoretical reference for the efficient and high-quality production of yuba. Methods: The effect of soymilk solids concentration and slurry depth on the yield, film-forming rate, nutrient contents, mechanical properties, cooking loss rate, and rehydration ratio were investigated. Results: The optimal yield solids of yuba (34.68%) and highest nutritional value occurs when the soymilk solids concentration is 6% and the soymilk slurry depth is 6 cm, which presents 51.05% protein, 23.42% fats, and it also has good tensile strength and rehydration qualities, with respective measurements of 3.74 MPa and …

Study On Optimization Of Enzymatic Hydrolysis Technology For Mushroom Sauce, Chen Jing, Tang Haoguo, Wang Jiakang, Si Qihe, Shen Ruxiao

Food and Machinery

Objective: This study aimed to prepare a kind of mushroom paste with Lentinus edodes, Pleurotus eryngii and Agaricus bisporus as raw materials by enzymolysis with cellulase. Methods: The response surface method was used to optimize the optimal enzymatic hydrolysis process of the mushroom paste with amino acid nitrogen content as the index. Results: The optimal enzymolysis conditions were as follows: enzyme dosage 0.6%, pH 6, enzymolysis temperature 50 ℃, solid-liquid ratio 1∶30 （g/mL）. Under these conditions, the actual amino acid nitrogen content was 0.418 μg/100 g. Conclusion: The sensory evaluation and nutritional indexes of the mushroom paste are up …

Research Progress On Postharvest Quality Deterioration And Preservation Technology Of Blueberry, She Jiehai, Zhou Wenhua, Ma Yan, Zeng Yaoying, Yu Zhuojun, Guo Hangyu

Food and Machinery

Because of high moisture content, blueberries are susceptible to disease and insect infestation leading to corruption and deterioration, which has serious influence on the shelf life of blueberry fruits. This article summarizes the cause mechanism of postharvest quality deterioration of blueberry fruits and the research progress of blueberry preservation technology at home and abroad, mainly including physical, chemical and biological preservation methods; and emphasizes the application of biological methods in the postharvest preservation of blueberries.

Research Progress On Preparation And Characteristics Of Polysaccharide Plant Protein Complex, Zhang Di, Fu Meiling, Fei Congxuan, Li Dandan, Xiu Jianhua

Food and Machinery

Polysaccharides and proteins are two important components in food. Combining plant protein with polysaccharides can give full play to their advantages, show new functional characteristics, and improve their shortcomings. In this review, the preparation and influencing factors of polysaccharides-plant proteins complex, the functional properties of the polysaccharide-plant protein complex and its application are introduced.

Exploring Biomarkers Of Sex-Based Disparities In Relapsing Multiple Sclerosis, Stephanie Buxhoeveden

Sigma Foundation for Nursing Research Grant Reports

The purpose of this study was to better understand the molecular pathways involved in the sex-based disparities of MS, and to narrow the disease phenotype by exploring gene expression (transcriptomic) and epigenetic (miRNA) profiles.

Exploring Drivers Of Sex-Based Disparities In Relapsing Multiple Sclerosis, Stephanie Buxhoeveden

Dissertations

Females are three times more susceptible to relapsing multiple sclerosis (MS) and males typically have more severe disease, but the molecular underpinnings of these sex-based disease disparities are unknown and represent a critical knowledge gap.

Disasters And Impacts In Appalachian Kentucky: A Behavioral Health Analysis, Walter David Mathews Phd, Joseph M. Clark, Amy S. Potts

Journal of Appalachian Health

Introduction: Major disasters continue to occur in Appalachian Kentucky with devastating consequences. A major disaster, defined by the Federal Emergency Management Agency (FEMA) as an event too large for a community to manage without outside help, involves emergency responders from the local, state, and federal disaster agencies, plus national volunteers.

Purpose: This paper reports on recent disasters in eight southeast Kentucky counties, the changing nature of these disasters, and the behavioral health impact on the people affected.

Methods: In this large-scale disaster survey in the Appalachian counties in Southeast Kentucky, over 3,500 people were asked about their recent disaster experiences …

An Exploration Of Power Relations In Select Plays Of Girish Karnad A Foucauldian Perspective, Srinivasa Yogananda Rao Netrakanti

Theses and Dissertations

The present study, ‘An Exploration of Power Relations in Select Plays of Girish Karnad: A Foucauldian Perspective‘ aims to study power relations among the different characters in the three plays of Girish Karnad viz., Tughlaq, Naga-Mandala and Tale- Danda through Foucault's three modalities of power viz., bio-power, disciplinary power and sovereign power.

Chapter 1, Introduction gives a bird-eye view of Foucauldian concepts of power followed by the three modes of objectification and dividing practices, subjects and power relations, inter-connectedness between power and knowledge, panopticism, bio-power and discourses, the application of Foucauldian theories of the three major powers. Next, a Girish …

Methods For The Treatment Of Mycobacterium Infections, Bill J. Baker, Kyle Rohde, Bingjie Yang, Marisa Fuse

USF Patents

The present disclosure provides methods for the treatment of infections with Mycobacterium such as tuberculosis or leprosy.

Leveraging Smart-Phone Cameras And Image Processing Techniques To Classify Mosquito Genus And Species, Sriram Chellappan, Pratool Bharti, Mona Minakshi, Willie Mcclinton, Jamshidbek Mirzakhalov

USF Patents

Identifying insect species integrates image processing, feature selection, unsupervised clustering, and a support vector machine (SVM) learning algorithm for classification. Results with a total of 101 mosquito specimens spread across nine different vector carrying species demonstrate high accuracy in species identification. When implemented as a smart-phone application, the latency and energy consumption were minimal. The currently manual process of species identification and recording can be sped up, while also minimizing the ensuing cognitive workload of personnel. Citizens at large can use the system in their own homes for self-awareness and share insect identification data with public health agencies.

Investigating Nutrient Biomarkers Of Healthy Brain Aging: A Multimodal Brain Imaging Study, Christopher E. Zwilling, Jisheng Wu, Aron K. Barbey

Department of Psychology: Faculty Publications

The emerging field of Nutritional Cognitive Neuroscience aims to uncover specific foods and nutrients that promote healthy brain aging. Central to this effort is the discovery of nutrient profiles that can be targeted in nutritional interventions designed to promote brain health with respect to multimodal neuroimaging measures of brain structure, function, and metabolism. The present study therefore conducted one of the largest and most comprehensive nutrient biomarker studies examining multimodal neuroimaging measures of brain health within a sample of 100 older adults. To assess brain health, a comprehensive battery of well-established cognitive and brain imaging measures was administered, along with …

Nanobodies In The Fight Against Infectious Diseases: Repurposing Nature's Tiny Weapons, Dina Mohamed Moustafa, Soha S. Rizk, Shahira A. Elbanna, Hanzada Tawfik Nour El-Din, Ahmed Sherif Attia

Dentistry

Nanobodies are the smallest known antigen-binding molecules to date. Their small size, good tissue penetration, high stability and solubility, ease of expression, refolding ability, and negligible immunogenicity in the human body have granted them excellence over conventional antibodies. Those exceptional attributes of nanobodies make them promising candidates for various applications in biotechnology, medicine, protein engineering, structural biology, food, and agriculture. This review presents an overview of their structure, development methods, advantages, possible challenges, and applications with special emphasis on infectious diseases-related ones. A showcase of how nanobodies can be harnessed for applications including neutralization of viruses and combating antibiotic-resistant bacteria …

The Exploration Of Latino Bip Participants' Experiences Of Oppression And Expressions Of Critical Consciousness, Adrian Luis Manriquez

Dissertations and Theses

According to Freire (1970), individuals and groups who are systemically oppressed in society often develop and struggle with a sense of internalized oppression, and those who fail to address their own oppression will likely engage in the oppression of others. Conceivably, this is the state of affairs for Latino males who perpetrate intimate partner violence (IPV). However, Latinos who use IPV behaviors are often viewed solely as "villains" or oppressors (Corvo & Johnson, 2003), omitting the various contexts in which this subgroup of males might be subjected to oppressive conditions outside of their intimate relationships. This contributes to an absence …

Extreme Climate Events And Agricultural Commodity Markets, Mohammad Abir Chowdhury Shovon

LSU Master's Theses

This article investigates the impact of extreme climate events on U.S. agricultural commodity markets, specifically focusing on corn and soybeans. Using event study methods and a comprehensive dataset of 254 extreme climate events for corn as well as 250 extreme climate events for soybeans in top ten corn & soybeans producing states of the USA between 1995 and 2023, we examine how storms, floods, extreme temperatures, and droughts affect the abnormal returns of these commodities. Our findings indicate that 22.04% of climate events significantly impact corn returns and 21.20% of climate events have significant impact on soybeans returns. Notably, extreme …

Pregnant Black Bodies In Peril: A Multi-Method Analysis Of Obstetric Outcomes And Gestational Experiences, Courtney E. Williams

LSU Doctoral Dissertations

My multi-method three-paper dissertation provides a better understanding of the relationship between maternal racial identity, obstetric outcomes, and gestational experiences. Using birth certificate data from the 2016 U.S. National Vital Statistics System and binary logistic regression models, in the first paper I explore heterogeneity in severe maternal morbidity (SMM) by maternal race, maternal education, and maternal age. To complement the first paper, in the second paper I allow 35 Black and White women/birthing people to describe pregnancy, birth, and early motherhood in their own words. I situate the Covid-19 pandemic as a unique cultural backdrop in this qualitative paper to …

Characteristics Influencing Enrollment Choices: A Mixed Methods Analysis Of Factors That Influence Black Students' Decision To Enroll In College Of Agriculture Programs, Jennifer L. Brown

LSU Doctoral Dissertations

This study aims to identify the barriers that affect Minority enrollment in agriculture, particularly focusing on increasing the enrollment of Black students. There is a significant concern regarding the gap between Black individuals and agriculture enrollment in post-secondary agriculture programs at land-grant institutions. The purpose of this mixed method phenomenology was to (1) identify factors that influence the decision of Black students to enroll in the College of Agriculture and (2) uncover the societal and economic influences that continue to serve as barriers to Black students’ enrolling in agriculture. The quantitative portion of the investigation utilized a web-based instrument structured …

A Rechargeable Metal-Co2 Battery Using Lower-Cost Materials, Chris Fetrow

Nanoscience and Microsystems ETDs

High energy density, low-cost chemical conversion batteries are widely studied for their potential application to applications in which current battery technologies are unsuitable replacements for fossil fuel-powered systems. The demonstration of rechargeable chemical conversion batteries, and particularly batteries without the fatal flaw of high overpotential due to the difficulties inherent to chemical conversion reactions, is of great interest to further both this aim. In this work, a secondary Al-CO2 battery was demonstrated using a homogeneous aluminum iodide redox mediator to enable the battery’s discharge and charge at a high energy density and a low overpotential of 0.05 Volts. The operation …

Age-Specific Induction Of Mutant P53 Drives Clonal Hematopoiesis And Acute Myeloid Leukemia In Adult Mice, Rasoul Pourebrahim, Rafael Heinz Montoya, Hiroki Akiyama, Lauren Ostermann, Shayuan Khazaei, Muharrem Muftuoglu, Natalia Baran, Ran Zhao, Tom Lesluyes, Bin Liu, Joseph D Khoury, Mihai Gagea, Peter Van Loo, Michael Andreeff

Faculty, Staff and Student Publications

The investigation of the mechanisms behind p53 mutations in acute myeloid leukemia (AML) has been limited by the lack of suitable mouse models, which historically have resulted in lymphoma rather than leukemia. This study introduces two new AML mouse models. One model induces mutant p53 and Mdm2 haploinsufficiency in early development, showing the role of Mdm2 in myeloid-biased hematopoiesis and AML predisposition, independent of p53. The second model mimics clonal hematopoiesis by inducing mutant p53 in adult hematopoietic stem cells, demonstrating that the timing of p53 mutation determines AML vs. lymphoma development. In this context, age-related changes in hematopoietic stem …