Digital Commons Network^™

The Local Food Supply, Willingness To Pay And The Sustainability Of An Island Destination, Cathrine Linnes, Jeffrey Thomas Weinland, Giulio Ronzoni, Joseph Lema, Jerome Agrusa

Hospitality Faculty Research

Purpose: The purpose of this study is to examine the trend toward purchasing locally grown food and evaluate if tourists visiting hawai’i are willing to pay more for locally produced foods that are more ecologically sustainable.

Design/methodology/approach: A research questionnaire was developed in order to investigate the attitudes and behaviors of tourists from the continental united states visiting hawai’i in purchasing locally grown food in hawai’i. the final sample includes 454 valid survey responses collected via momentive, a market research services company.

Findings: According to the findings of this study, there are economic prospects to expand the use of locally …

Active Consideration Of Health And Nutritional Quality Of Food Choices, Christopher R. Gustafson

Cornhusker Economics

Everyone can be positively influenced by effective interventions promoting healthier food choices. A handful of recent papers have documented positive impacts on dietary quality resulting from interventions that remind people to consider health through prompt messages or subtle priming in supermarkets and in controlled, online experiments. These studies have focused on the impact of reminders on nutritional quality rather than explaining how reminders work. An exception, Arslain, Gustafson, and Rose (2021), collected data on multiple elements of individuals' choice processes to trace the impact of reminders on decisions, showing that reminder messages led people to consider a healthier set of …

Nebline, August/September 2022

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Nutrition Security: A New National Focus by Emily Gratopp

Recipe of the Month: Starwberry Smoothie and Freezer Pop by Emily Gratopp

Harvesting & Drying Herbs by Sarah Browning

Garden Guide: Things to Do This Month

Water Play Fun by Hayley Jackson

Controlling Poison Hemlock by Melissa Bartels

Summer Brings Singing Cicadas by Kait Chapman

4-H Announcements for Enrolled 4-H'ers or 4-H Volunteers

Lancaster County Super Fair, July 28-Aug. 6, 2022

4-H Will Livestream from the Fair! YouTube

Join 4-H!

Heart of 4-H Volunteer Award: Sonja Moore and Lancaster County Engineering Department

4-H Teen Council Invites New Members

4-H Council Golf …

Assessing Consumer Demand, Producer Profitability, And The Environmental Impacts Of Conservation Agriculture Adoption In Sub-Saharan Africa, Willy Byamungu Mulimbi

Graduate Theses and Dissertations

This dissertation explores three aspects of conservation agriculture (CA) in the Sub-Saharan African region (SSA). The first article examines the demand side of CA and explores whether urban maize (Zea mays L.) consumers in the Democratic Republic of the Congo (DRC) would be willing to pay a premium for CA-produced maize flour. The second article estimates the effects CA provides to adopters and their farms in smallholder farming systems in the DRC, focusing on changes in soil properties and cowpea (Vigna unguiculata) yields. The final article uses a Life Cycle Assessment (LCA) approach to monetize the environmental impacts of adopting …

Framing The Needs Of School-Based Agricultural Education Teachers To Meet Twenty-First Century Programs Demands, Kayla Marsh

All Theses

Teacher attrition is a historic problem that globally is considered to be an educational crisis. SBAE is not exempt from this crisis with teacher shortages dating back to the passing of the Smith-Hughes Act in 1917. For the past three decades, researchers have studied this phenomenon to better understand the needs of SBAE teachers in order to increase recruitment and retention as well as improve work-life balance.

While several needs are recurring current efforts are not resulting in actionable change for SBAE teachers. To gain perspectives on the problem, qualitative interviews were conducted with SBAE teachers as well as an …

Effects Of Shade Nets On Microclimatic Conditions, Growth, Fruit Yield, And Quality Of Eggplant (Solanum Melongena L.): A Case Study In Carnarvon, Western Australia, Giao N. Nguyen, Neil Lantzke, Andrew Van Burgel

Horticulture Research Articles

Carnarvon has a hot, semi-arid climate with high temperatures and solar radiation during spring–summer, which damages crops and limits the production season for the local vegetable industry. Protective cultivation is one of the promising approaches to mitigate these adverse weather conditions and avoid the resulting damage to vegetable crops. This study, which is part of the protected cropping research program for vegetable crops in Western Australia, was conducted to understand how the shade nets of a protective net house modify the microenvironment affecting the growth, physiology, and fruit yield of eggplants, a model vegetable crop. The eggplant crop was grown …

Societal Sustainability: Projects To Address The Three Dimensions Of A Sustainable Future, Braden K. Bateman

Graduate Theses and Dissertations

Sustainability is an important, commonly discussed societal goal regarding assurance of resources for the world to be able to enjoy a prosperous future. Three primary dimensions of sustainability include environmental, economic, and social sustainability, and objectives for various projects can be aimed at any of the three dimensions to pursue societal sustainability. Solar installations, which can be used to pursue environmental and economic sustainability, convert abundant sunlight to electricity, displacing fossil fuel use that contributes harmful greenhouse gases to the atmosphere. The regulatory environment at the state level has a significant impact on the feasibility of solar projects. At present, …

Discrete Choice Experiments In Agricultural And Food Economics: Two Essays On Information Provision Modalities, Uncertainty Adjustment, And Hypothetical Bias, Monsoïa Arsène Juste Agossadou

Graduate Theses and Dissertations

Stated discrete choice experiments are extensively used in applied economics to study preferences and valuation for new products, as well as costs and benefits of new policies and programs. Moreover, information provision experiments widely use the method to examine information effects on different outcomes. This thesis explores two methodological issues in discrete choice experiments: (i) information provision modalities and (ii) hypothetical bias. The first study examines the effect of information modality by testing the effect of using combined text script and audio clip (treatment) versus only text script (control) to convey information in discrete choice experiments. Specifically, the study elicits …

Environmental Weed Risk Assessment Protocol For Growing Non-Indigenous Plants In The Western Australian Rangelands, Geoff A. Moore Mr, Christine Munday Ms, Papori Barua Dr

Bulletins 4000 -

This bulletin is a post-border environmental weed risk assessment (WRA) protocol which is based on the Environmental WRA Protocol developed for the Future Farm Industries Co-operative Research Centre (FFI CRC), but with some changes to reflect the different environment and objectives.

The WRA protocol was developed specifically as a post-border assessment of non-indigenous species that may have agricultural value in the WA rangelands and the risk that they may become environmental weeds. Weeds can occur in many land-use systems including agriculture, horticulture and forestry; however, the focus of this protocol is on the risk that non-indigenous agricultural plants may become …

Evaluation Of The Feeding Value Of Proso Millet In Growing-Finishing Diets For Pigs And Effects Of Feed Ingredients And Medium-Chain Fatty Acids On Porcine Reproductive And Respiratory Syndrome Virus (Prrsv) Survivability, Khang Nguyen

Department of Animal Science: Dissertations, Theses, and Student Research

The objective of the project were to: 1) evaluate the feeding value of proso millet as a potential substitute for corn in corn-soybean meal-based diets for pigs; and 2) investigate the relationship between feed ingredients and virus survivability, followed by examining feed additive candidates that could mitigate the risk of transmission of viral pathogens.

In Exp. 1, 36 barrows were fed 1 of 4 dietary treatments, including: Diet 1, corn-soybean meal-based (control), and Diets 2, 3, and 4 had proso millet replacing 33%, 67%, and 100% of corn in the control diet, respectively. During Phase 3, pigs consuming the proso …

Impact Of Increasing Level Of Milk Production On Cow And Calf Behavior And Performance In The Nebraska Sandhills, Selby L. Boerman

Department of Animal Science: Dissertations, Theses, and Student Research

Selection for increased milk production across the United States has resulted in variable cow and calf production responses. Better understanding of calf nursing and grazing behaviors may provide opportunities to help estimate how milk and grazed forage intake influence variability in calf performance. In a 2-yr study, cow-calf pairs (n = 65) were equipped with neck collars containing global positioning system (GPS) units to validate the efficacy of high-frequency GPS data to accurately identify calf nursing events and grazing behavior. Data were collected during 3-wk tracking periods during early lactation (calf age 65.4 ± 10.0 d; EARLY) and late …

Using Strategic Supplementation To Enhance Cow/Calf Productivity In Summer Calving Herds In The Nebraska Sandhills, Nicole M. Woita

Department of Animal Science: Dissertations, Theses, and Student Research

Young range beef cows consuming low-quality forage may result in an imbalance of energy and metabolizable protein, which can negatively affect the nutrient status of the cow and reproductive performance. In a 2-yr study conducted at Gudmundsen Sandhills Laboratory near Whitman, NE, 2- and 3-yr-old May-calving range cows (n = 181) grazing native range were individually supplemented daily with one of four supplements: 1) mineral with a target intake of 113 g/d (MIN), 2) MIN with 200 mg per head of Rumensin to with a target intake of 113 g/d (RUM), 3) MIN with a 226 g/d of high …

Investigating Bacterial Community Composition And Antimicrobial Resistance Genes In Beef Cattle, Arena E. See

Department of Animal Science: Dissertations, Theses, and Student Research

While antibiotics have been critical over the last decade for curbing infectious diseases, they have contributed to the rise of antimicrobial resistance (AMR). Infections resulting from antimicrobial-resistant pathogens are correlated with severe morbidity, mortality, and healthcare costs. With the increasing concerns regarding AMR and its emergence, it is paramount to understand not only the effects of antibiotics on microbial community and diversity, but also to develop a novel tool that gives us a better understanding of the spread and functional traits of AMR genes.

To this end, rumen, fecal, and pen surface samples were collected from 72 animals at United …

How The “Blueprint” For Agriculture In Adventist Education Can Be Relevant In The 21st Century, Katherine Koudele

Faculty Publications

No abstract provided.

The Relationship Between Psychosocial Factors And Food Waste-Related Behaviors Among College Students, Kacy Raquel Wright

Graduate Theses and Dissertations

Food waste is a significant environmental, economic, and social issue, with younger consumers as the most significant contributors. Specific behaviors, like over-purchasing food and misusing date labels, result from a complex interaction between social and psychological factors, which influence food waste among this demographic. The purpose of this study was to identify the psychosocial factors influencing food waste behaviors among college students at the University of Arkansas. Guided by the Theory of Planned Behavior, this study utilized online and face-to-face quantitative surveys, distributed to students enrolled at the University of Arkansas in the spring of 2022. Demographics, attitudes, subjective norms, …

Potential Psychoactive Effects Of Microalgal Bioactive Compounds For The Case Of Sleep And Mood Regulation: Opportunities And Challenges, Bozena Mccarthy, Graham O’Neill Dr, Nissreen Abu-Ghannam Prof.

Articles

Sleep deficiency is now considered an emerging global epidemic associated with many serious health problems, and a major cause of financial and social burdens. Sleep and mental health are closely connected, further exacerbating the negative impact of sleep deficiency on overall health and well-being. A major drawback of conventional treatments is the wide range of undesirable side-effects typically associated with benzodiazepines and antidepressants, which can be more debilitating than the initial disorder. It is therefore valuable to explore the efficiency of other remedies for complementarity and synergism with existing conventional treatments, leading to possible reduction in undesirable side-effects. This review …

Quantification And Machine Learning Based N2o–N And Co2–C Emissions Predictions From A Decomposing Rye Cover Crop, Deepak R. Joshi, David E. Clay, Sharon A. Clay, Janet Moriles-Miller, Aaron L. M. Daigh, Graig Reicks, Shaina Westhoff

Department of Agronomy and Horticulture: Faculty Publications

Cover crops improve soil health and reduce the risk of soil erosion. However, their impact on the carbon dioxide equivalence (CO_2e) is unknown. Therefore, the objective of this 2-yr study was to quantify the effect of cover crop-induced differences in soil moisture, temperature, organic C, and microorganisms on CO_2e, and to develop machine learning algorithms that predict daily N₂O–N and CO₂–C emissions. The prediction models tested were multiple linear regression, partial least square regression, support vector machine, random forest (RF), and artificial neural network. Models’ performance was accessed using R², …

Limited Effects Of Precipitation Manipulation On Soil Respiration And Inorganic N Concentrations Across Soil Drainage Classes In Northern Minnesota Aspen Forests, Anna B. Stockstad, Robert A. Slesak, Alan J. Toczydlowski, Charles R. Blinn, Randall K. Kolka, Stephen D. Sebestyen

Aspen Bibliography

It is critical to gain insight into the responses of forest soils to the changing climate. We simulated future climate conditions with growing season throughfall reduction (by 50%) and winter snow removal using a paired-plot design across a soil drainage class gradient at three upland, Populus-dominated forests in northern Minnesota, USA. In situ bulk soil respiration and concentrations of extractable soil N were measured during the summers of 2020–2021. Soil respiration and N concentrations were not affected by throughfall reduction and snow removal, which was largely attributed to the limited treatment effects on soil moisture content and soil temperature. …

Missouri Alot - Dc Experience, Amy Bax

Title III Professional Development Reports

I want to thank Lincoln University for sponsoring this trip. I had access to many high-level people in DC that wanted to hear my story of agriculture. These are people that have the power to create legislative practices and policies that are favorable to the agricultural industry. I had the opportunity to advocate for Lincoln and Lincoln University students.

Integration Of Remote Sensing Approaches For In-Season Nitrogen Management, Murilo De Santana Martins

LSU Doctoral Dissertations

Nitrogen (N) management is being conducted at flat rate in Louisiana due to practicality and convenience, but the price of N fertilizer and high breakeven costs are forcing producers to find ways to reduce costs and optimize N application. In this scenario, precision agriculture technologies, specifically the use of optical sensors on board of unmanned aerial systems (UAS) to variable rate N application on farm is showing a promising approach to save inputs and reduce environmental impacts. However, the general goal of this research was to develop and evaluate in-season N management approaches for N recommendation in corn (Zea …

Inhibitory Effect Of Sea Cucumber Coelomic Fluid Extracts On White Shrimp Autolysis, Nie Bin, Li Ao-Ting, Cui Xiao-Fan, Du Yi-Nan, Yan Jia-Nan, Wu Hai-Tao

Food and Machinery

Objective:In this paper, the inhibition of protein degradation in autolysis of white shrimp (Penaeus vannamei) surimi by extracts from the coelomic fluid of sea cucumber (Stichopus japonicus), a by-product of sea cucumber processing, was studied.Methods:The protein degradation in autolysis of white shrimp was studied by SDS-PAGE assay. Furthermore, the effect of sea cucumber coelomic fluid and its extracts on white shrimp protein degradation was determined by SDS-PAGE and TCA-soluble oligopeptide assay.Results:The optimal conditions of white shrimp autolysis were incubation at pH 3.0, 50 ℃ for 2 h. The bond intensities of myosin heavy chain around …

Dynamic Changes Of Volatile Flavor Components And Their Precursors During Low Temperature Cooking Of Beef, Cui Wei, Meng Xiang-Ren, Gao Zi-Wu, Ma Yin-Rui

Food and Machinery

Objective:In order to explore the dynamic changes of volatile flavor components and their precursors during low temperature cooking of beef.Methods:Beef with central temperature of 98 ℃ was used as control group. Nucleotides, free amino acids, free fatty acids, total sugars and volatile flavor components in beef with central temperature of 60, 65, 70, 75 and 80 ℃ were determined, and sensory evaluation was carried out.Results:The results showed that the content of fresh flavor nucleotides, equivalent fresh flavor concentration and taste activity in the low temperature group were significantly higher than those in the control group …

Effect Of Sulfate Modificate On The Structure And Antioxidant Activity Of Jujube Polysaccharide, Gong Xiao-Pei, Zhang Jian, Guo Xiao-Bin, Mao Xiao-Ying, Zhang Lian-Fu

Food and Machinery

Objective:This study aimed to explore the relationship between the structure and antioxidant activity of purified red date polysaccharide ZJP-1 and sulfated red date polysaccharide S-ZJP-1.Methods:Using remnant jujube as raw material, jujube polysaccharide (ZJP-1) was purified by hot water extraction, and then separated by DEAE-52 ion exchange chromatography and Sephadex-200 dextran gel column chromatography. Thereafter, red jujube polysaccharide sulfated derivative (S-ZJP-1) was obtain through chlorosulfonic acid-pyridine sulfated modification.Results:Both ZJP-1 and S-ZJP-1 are composed of three monosaccharides: glucose, arabinose, and galactose, but the ratios are different. The two polysaccharides had characteristic absorption peaks of polysaccharides, and S-ZJP-1 …

Study On Composition Difference And Antioxidant Activity Of Peel And Kernel From Raw And Fried Semen Of Ziziphi Spinosae, Xiao Feng-Qin, Liu Hui, Yang Yi-Liu, Yu Qian, Li Jia, Zhang Hong-Yin, Shao Shuai, Li Guang-Zhe, Yan Ming-Ming

Food and Machinery

Objective:This study aimed to reveal the composition differences and antioxidant activities of kernel and peel from raw and fried semen from Ziziphi spinosae.Methods:Using 1, 1-diphenyl-2-picrylhydrazyl (DPPH) radical, hydroxyl radical (·OH), superoxide anion radical (O-2·), 2,2'-amino-di (3-ethyl-benzothiazoline-6-sulphonic acid) ammonium salt (ABTS) free radical scavenging ability and ferric reducing antioxidant power (FRAP) to determine the antioxidant activity of peel, kernel and jujube benevolence from different semen. Moreover, the components of peel, kernel and jujube benevolence were also studied by UV spectrophotometer.Results:The results showed that the peel, kernel, and jujube benevolence of all the semen had certain antioxidant …

Research On Network Food Safety Supervision Strategy Under The Background Of "Internet Plus", Wang Li-Hua

Food and Machinery

Firstly the research background and the current status of online food safety research were introduced, and then the current status and problems of online food supervision were analyzed in this review. Finally, some supervision strategies were proposed in four ways, i.e., the construction of a smart collaborative supervision platform, the reform of supervision organization and power reshaping, the breaking information asymmetry and the strengthening of consumer rights protection.

Melon Weak Microwave-Assisted Hot Air Drying Characteristics And Mathematical Model, Zhang Jian-Chao, Bai Yu-Jia, Feng Zuo-Shan, Zheng Li-Ping, Dilinur Jakefu

Food and Machinery

Objective:Using Xinjiang melon as raw material, explore melon slices in weak microwave-assisted hot air drying in the process of drying characteristics.Methods:UsingR2,χ2 and RMSE as evaluation indexes, compare melon slices of wet basis moisture content under different conditions, the drying rate, moisture content than the distinction, and melon dry dynamics model was set up, and the drying characteristic curve of melon slices was gotten at different slice thickness, the cycle time of microwave, the hot air cycle time.Results:The thinner the slice, the longer the circulation drying time of microwave and dry hot air, the faster the …

Optimization Of Preparation Technology And Antioxidant Activity Of Enzymatic Hydrolysates From Corneum Gigerii Galli Endothelium, Zhang Hui-Ying, Yang Wei-Qiao, Chen Yao, Li Pan, Du Bing

Food and Machinery

Objective:In order to study the optimal enzymatic hydrolysis process conditions of corneum galli gigerii endothelium, and analyze the amino acid composition, molecular weight distribution and antioxidant activity of the enzymatic hydrolysate.Methods:With the yield of polypeptide and the degree of hydrolysis as indicators, the orthogonal experiment was used to optimize the enzymatic hydrolysis conditions of corneum galli gigerii endothelium. Amino acid analyzer and high-performance gel permeation chromatography were used to determine the amino acid composition and molecular weight distribution of the enzymatic hydrolysate of corneum galli gigerii endothelium. The clear ability of corneum galli gigerii endothelium to DPPH …

Study On Preparation Of Collagen Peptides From Micropterus Salmoides Skin And Its Antioxidant Activity, Han Meng-Yao, Li Xin-Yue, Wang Xiao-Mei, Wang Guo-Zhi, Ye Jin-Yun, Zhang Zhong-Shan

Food and Machinery

Objective:Collagen was extracted from the skin of Micropterus salmoides and used to explore the effect of enzyme types on the antioxidant activity of collagen peptides.Methods:Four kinds of enzymes were used, namely alkaline protease, neutral protease, papain and trypsin. The enzymatic hydrolysis of collagen Alkaline protease enzymatically hydrolyze collagen peptide (APP), Neutral protease enzymatically hydrolyze collagen peptide (NPP), Papain enzymatically hydrolyze collagen peptide(PP), Trypsin hydrolysis of collagen peptide(TP), were obtained and compared their total antioxidant activity, including reducing activity, DPPH, ·OH and O-2·free radical scavenging ability, ferrous ion chelating ability and lipid Oxidation inhibitory activity.Results:Four kinds …

Quality Properties Of Mixture Of The Proso Millet And Rice, Ren Jing, Jiang Wen-Qian, Zhao Ning, Ji Xiao-Hui, Li Meng-Qing, Du Shuang-Kui

Food and Machinery

Objective:The purpose of this study was to mix rice and proso millets and obtain high nutritional value, fantastic taste and flavor mixed rice.Methods:By adding different proportions of proso millets to rice, the nutritional value and fantastic taste of mixed rice were evaluated via the amino acid score (AAS), texture profile properties, sensory evaluations and flavor properties.Results:There were significant differences in the texture profile properties, sensory evaluations and flavor properties among cooked proso millets additions. The proportion of the cooked rice addition was significantly positively correlated to the gumminess and chewiness of rice, while it was …

Optimum Parameters And Application Of Buckwheat Noodle Composite Preformed Powder, Zhao Min, Yang Bao-Wei, Hu Jian, Wang Rong-Lan

Food and Machinery

Objective:This study aimed to explore the best parameters of buckwheat noodle composite preformed powder.Methods:Single factor experiment, multi-index comprehensiveevaluation method and orthogonal experiment were used to optimize the special composite preformed powder recipe of buckwheat noodles.Results:The best parameters of buckwheat noodle composite preformed powder were 45% of buckwheat flour, 8% of modified starch, 1.2% of compound phosphate and 3% of gluten powder. In this situation, the tensile area of composite flour dough was 3 378.6 g·mm; the stabilization time was 7.23 min, the content of wet gluten was 23.71%; the sensory score was89.2; the comprehensive score …