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Articles 1 - 30 of 33
Full-Text Articles in Other Food Science
Foraging Culture In Iceland: Understanding The Transfer Of Plant Knowledge And Personal Views On Foraging, Ella Jane Maurer
Foraging Culture In Iceland: Understanding The Transfer Of Plant Knowledge And Personal Views On Foraging, Ella Jane Maurer
Whittier Scholars Program
Foraging is a broad topic, practiced in different locations throughout history. This study looks into the specific practices, values, and views of foraging in Iceland. There is little previous research that has been done, working with Icelanders, and hearing their stories. Through conducting several interviews of local Icelanders with different backgrounds and a brief six-question survey via the Inaturalist application, this study looks into exactly that. By compiling stories from the interview and survey data, themes were highlighted collecting similar and contrasting statements on ways plants are foraged, opinions on Icelandic foraging culture as a whole, and ways knowledge is …
Influence Of Fertilizer Rate On Swollen Stem Formation (“Bulbing”) And Vitamin C Content In Different Kohlrabi Cultivars, Mark Iradukunda, Paul E. Read
Influence Of Fertilizer Rate On Swollen Stem Formation (“Bulbing”) And Vitamin C Content In Different Kohlrabi Cultivars, Mark Iradukunda, Paul E. Read
Honors Theses
Kohlrabi (Brassica oleracea Gongylodes Group) is a vegetable crop found in the Brassicaceae, and it is rich in antioxidants such as vitamin C. Vitamin C helps in oxidative damage repair and strengthens the immune system, so exploring vitamin C sources may contribute to improving human health. The objective of this study was to determine the effect of different fertilizer rates on kohlrabi yield, in terms of the swollen stem and the vitamin C content, and if those effects are similar in different kohlrabi cultivars. In this greenhouse study, we fertilized four potted kohlrabi cultivars with a common water-soluble greenhouse fertilizer …
Assessment Of Grain Safety In Developing Nations, Jose R. Mendoza
Assessment Of Grain Safety In Developing Nations, Jose R. Mendoza
Department of Food Science and Technology: Dissertations, Theses, and Student Research
Grains are the most widely consumed foods worldwide, with maize (Zea mays) being frequently consumed in developing countries where it feeds approximately 900 million people under the poverty line of 2 USD per day. While grain handling practices are acceptable in most developed nations, many developing nations still face challenges such as inadequate field management, drying, and storage. Faulty grain handling along with unavoidably humid climates result in recurrent fungal growth and spoilage, which compromises both the end-quality and safety of the harvest. This becomes particularly problematic where there is little awareness about health risks associated with poor …
De Novo Sequencing And Analysis Of Salvia Hispanica Tissue-Specific Transcriptome And Identification Of Genes Involved In Terpenoid Biosynthesis, James Wimberley, Joseph Cahill, Hagop S. Atamian
De Novo Sequencing And Analysis Of Salvia Hispanica Tissue-Specific Transcriptome And Identification Of Genes Involved In Terpenoid Biosynthesis, James Wimberley, Joseph Cahill, Hagop S. Atamian
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Salvia hispanica (commonly known as chia) is gaining popularity worldwide as a healthy food supplement due to its low saturated fatty acid and high polyunsaturated fatty acid content, in addition to being rich in protein, fiber, and antioxidants. Chia leaves contain plethora of secondary metabolites with medicinal properties. In this study, we sequenced chia leaf and root transcriptomes using the Illumina platform. The short reads were assembled into contigs using the Trinity software and annotated against the Uniprot database. The reads were de novo assembled into 103,367 contigs, which represented 92.8% transcriptome completeness and a diverse set of Gene Ontology …
Growing Torula Yeast (Candida Utilis) For Food Grade Fatty Acids, Zachary Christman
Growing Torula Yeast (Candida Utilis) For Food Grade Fatty Acids, Zachary Christman
Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research
The focus of this article is the cultivation of a food grade yeast for the production of fatty acids without the restrictions of climate or growing season. Torula yeast (Candida utilis) was selected since it can grow on a wide variety of culture media and has over 60 years of use in the food industry. The fatty acid composition of Candida utilis grown on two different media are presented in this article; the first example using completely synthetic media and another using distiller’s vinasse. Also, the effect of different culturing conditions on the percentage of various fatty acids will be …
Introduction To Sorghum Paper Production, Zachary Christman
Introduction To Sorghum Paper Production, Zachary Christman
Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research
Sorghum is a tall grass used for many commercial products such as fodder and syrup. The 10 to 15 feet stalk of the plant has lower lignin than wood and provides a fiber length of 2.31 mm in the outer covering and 1.38 mm for the leaf. Sorghum fiber makes a high quality, strong paper suitable for printing, packaging and paperboard.
Proximate Composition And Anti-Nutritional Factors Of Fava-Bean (Vicia Faba), Green-Pea And Yellow-Pea (Pisum Sativum) Flour, Kim A. Millar, Eimear Gallagher, Roisin Burke, Sinead Mccarthy, Catherine Barry-Ryan
Proximate Composition And Anti-Nutritional Factors Of Fava-Bean (Vicia Faba), Green-Pea And Yellow-Pea (Pisum Sativum) Flour, Kim A. Millar, Eimear Gallagher, Roisin Burke, Sinead Mccarthy, Catherine Barry-Ryan
Articles
Pulse grains were identified as a key resource for food innovation during the International Year of the Pulse (IYP), 2016. Pulse flour offers a sustainable source of plant protein for innovation in protein enriched cereal based foods. Fava-bean (Vicia faba), green- and yellow-pea (Pisum sativum) flour were analysed for proximate composition, minerals, amino acids, phenolic content, phytic acid and trypsin inhibitory activity. Fava-bean flour had the highest protein content (28 g/100 g), while green-pea flour had the highest total dietary fibre content (15 g/100 g). All three flours contained essential amino acids in adequate quantity, highlighting them as a source …
Acidulant Effect On Greening, Reducing Capacity, And Tryptophan Fluorescence Of Sunflower Butter Cookie Dough During Refrigerated Storage, Joele Tsopkeng Atonfack, Zeynep Akyol Ataman, Lilian M. Were
Acidulant Effect On Greening, Reducing Capacity, And Tryptophan Fluorescence Of Sunflower Butter Cookie Dough During Refrigerated Storage, Joele Tsopkeng Atonfack, Zeynep Akyol Ataman, Lilian M. Were
Food Science Faculty Articles and Research
BACKGROUND: Sunflower seed derived butter can be a source of protein and phenolic antioxidants in refrigerated dough. Chlorogenic quinone-amino acid induced greening can however occur at alkaline pH, which could result in less bioavailable conjugated phenol-amino acids. Acidulants were tested as potential anti-greening ingredients in refrigerated chemically leavened cookie dough. Effect of refrigerated storage time, leavening agents and acidulants on tryptophan fluorescence (»ex=280nm, »em=300-500), color (hunter LAB), reducing capacity (DPPH and Folin-Ciocalteu reagent reducing capacity/FCRC), and hydroxycinnamic acids were measured.
RESULTS: The pH range of acidified doughs was 4.83–6.98 compared to 7.65- 9.18 in nonacidified leavened doughs after 24 days. …
Genau, Charles (Fa1212), Manuscripts & Folklife Archives
Genau, Charles (Fa1212), Manuscripts & Folklife Archives
FA Finding Aids
Finding aid only for Folklife Archives Project 1212. Student paper titled “Winemaking: The Old and New Way” in which Charles Genau details the process of wine production from harvest, to fermentation, bottling, and distribution. Genau compares and contrasts methods of traditional winemaking with contemporary approaches. He also gathered his information from two winemakers of different ages and ethnic backgrounds. The paper contains two illustrations of the winemaking process.
Justice Served Fresh: Associations Between Food Insecurity, Community Gardening, And Property Value, Micajah Daniels, Courtney Coughenour Ph.D
Justice Served Fresh: Associations Between Food Insecurity, Community Gardening, And Property Value, Micajah Daniels, Courtney Coughenour Ph.D
McNair Poster Presentations
Numerous stakeholders in Nevada have used a variety of efforts to combat the growth of food insecurity facing Nevadans. The purpose of this research project is to understand the association between food insecurity, community gardens, and property value. Following the wealth of scholarship on these topics and data collected from community garden agencies in Southern Nevada, the research questions for this project include: (1) Where are community gardens located in SNV? (2) What efforts community gardens agencies are doing to address food insecurity (most interested in their efforts using community gardens)? (3) What are the perceptions of supports and barriers …
Effects Of Fruit Position In Standard Place Pack Cartons And Gamma 1 Irradiation On The Postharvest Quality Of ‘Barnfield’ Navel Oranges, Karina Cruz Rodriguez (Friscia), José De Jesús Ornelas-Paz, Vrani Ibarra-Junquera, Maria Criselda Toto, Akanksha Jain, Anuradha Prakash
Effects Of Fruit Position In Standard Place Pack Cartons And Gamma 1 Irradiation On The Postharvest Quality Of ‘Barnfield’ Navel Oranges, Karina Cruz Rodriguez (Friscia), José De Jesús Ornelas-Paz, Vrani Ibarra-Junquera, Maria Criselda Toto, Akanksha Jain, Anuradha Prakash
Food Science Faculty Articles and Research
The objective of this study was to determine if oranges in the top and bottom layers within a Standard Place Pack were impacted differently by irradiation after long-term storage. ‘Barnfield’ Navel oranges were packed in Standard Place Pack cartons and treated with 0, 0.15, or 1 kGy of gamma irradiation. The fruit were stored for 3 weeks at 5 °C and then for 1 week at 20 °C. After storage, the fruit from the top and bottom layers were separately evaluated for quality. The development of stem-end rind breakdown (SERB) was the main cause of quality loss and was greater …
Wrack Lines Spring-Summer 2018, Judy Benson, Ann Baldelli, Bill Hanrahan, Ellen Johnson
Wrack Lines Spring-Summer 2018, Judy Benson, Ann Baldelli, Bill Hanrahan, Ellen Johnson
Wrack Lines
From Sea to Table: Fish, Shellfish and sea vegetables from local waters
Breeding For Resistance In California Strawberry To Verticillium Dahliae, Zachary Christman
Breeding For Resistance In California Strawberry To Verticillium Dahliae, Zachary Christman
Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research
Since 1930 the University of California, Davis, has been developing strawberry cultivars that are adapted to the agricultural industry and regional farms. Developing cultivars that require fewer inputs are of significant economic importance in agronomy. Developing a crop resistant to a disease is beneficial for horticulturists since less labor and chemicals are needed for a high yield.6
In commercial strawberry cultivars, complete resistance to V. dahlia is extremely rare. The majority of Californian strawberry cultivars are highly susceptible to it.2 Over the last 18 years of plant breeding for strawberry cultivars with a high degree of resistance and …
Effect Of Phytosanitary Irradiation On The Quality Of Two Varieties Of Pummelos (Citrus Maxima (Burm.) Merr.), A. Jain, J. Ornelas-Paz, D. Obenland, K. Rodriguez (Friscia), Anuradha Prakash
Effect Of Phytosanitary Irradiation On The Quality Of Two Varieties Of Pummelos (Citrus Maxima (Burm.) Merr.), A. Jain, J. Ornelas-Paz, D. Obenland, K. Rodriguez (Friscia), Anuradha Prakash
Food Science Faculty Articles and Research
Phytosanitary treatments prevent the introduction of pests such as fruit flies into pest free zones, and are often required for international trade. Irradiation is increasingly being considered as an alternative to cold and chemical phytosanitary treatments, such as methyl bromide. In this study, the effect of low dose gamma irradiation on the post-harvest quality of two varieties of pummelos (Citrus maxima (Burm.) Merr.), an emerging crop of interest in the US was evaluated. Two varieties of pummelos grown in California were irradiated at the phytosanitary target dose of 150 Gy and a higher dose of 1000 Gy to exaggerate …
Testing Predictions Used To Build An Agrivoltaics Installation On A Small-Scale Educational Model, Katie Kinney, Rebecca Minor, Greg Barron-Gafford
Testing Predictions Used To Build An Agrivoltaics Installation On A Small-Scale Educational Model, Katie Kinney, Rebecca Minor, Greg Barron-Gafford
STAR Program Research Presentations
Models are valuable tools for explaining and testing systems. Small-scale models can be especially useful for educational purposes. For models to be useful, they have to accurately depict the larger system that they are describing. A novel man-made system, known as an agrivoltaic structure, is being constructed at Biosphere 2 near Oracle, Arizona. The word agrivoltaic is a combination of agriculture and photovoltaics, or solar farming. My research involved creating a small-scale version of this system for educational purposes. The model of this system tested two predictions: that plants will grow better in the shade of a panel and that …
Particular Applications Of Food Irradiation Fresh Produce, Anuradha Prakash
Particular Applications Of Food Irradiation Fresh Produce, Anuradha Prakash
Food Science Faculty Articles and Research
On fresh fruits and vegetables, irradiation at low and medium dose levels can effectively reduce microbial counts which can enhance safety, inhibit sprouting to extend shelf-life, and eliminate or sterilize insect pests which can serve to facilitate trade between countries. At the dose levels used for these purposes, the impact on quality is negligible. Despite the fact that regulations in many countries allow the use of irradiation for fresh produce, the technology remains under-utilized, even in the light of an increase in produce related disease outbreaks and the economic benefits of extended shelflife and reduced food waste. Putative concerns about …
From Milpas To The Market: A Study On The Use Of Metal Silos For Safer And Better Storage Of Guatemalan Maize, José Rodrigo Mendoza
From Milpas To The Market: A Study On The Use Of Metal Silos For Safer And Better Storage Of Guatemalan Maize, José Rodrigo Mendoza
Department of Food Science and Technology: Dissertations, Theses, and Student Research
This project aimed to implement the use of metal silos to improve quality and safety of maize consumed by inhabitants of the highlands of Guatemala. This manuscript includes a literature review of the maize production chain in Guatemala, a survey about agricultural practices used in the region of study, as well as a characterization of the analyzed maize regarding its mycoflora, nutritional composition, and insect infestation. To better understand the current situation regarding agricultural practices and maize consumption, a survey was carried out. Sample consisted of 280 families representing 14 rural communities distributed in the townships of Todos Santos and …
Comparative Evaluation Of The Effect Of Methyl Bromide Fumigation And Phytosanitary Irradiation On The Quality Of Fresh Strawberries, Tamar Serapian, Anuradha Prakash
Comparative Evaluation Of The Effect Of Methyl Bromide Fumigation And Phytosanitary Irradiation On The Quality Of Fresh Strawberries, Tamar Serapian, Anuradha Prakash
Food Science Faculty Articles and Research
Fresh strawberries are highly perishable and have a short shelf-life especially when the cold chain is not maintained. Strawberries exported to Asia are currently fumigated with methyl bromide for phytosanitary purposes, which exposes strawberries to warm temperatures for several hours and air freight without temperature control, resulting in a shelf life of just a few days in the destination country. Irradiation offers an efficacious alternative to fumigation and can be performed on cold fruit. This study was conducted to compare the quality of strawberries subject to methyl bromide fumigation or irradiation followed by simulated commercial air freight shipment of strawberries …
How Good Is Good Enough? Data Requirements For Reliable Crop Yield Simulations And Yield-Gap Analysis, Patricio Grassini, Lenny G.J. Van Bussel, Justin Van Wart, Joost Wolf, Lieven Claessens, Haishun Yang, Hendrik Boogaard, Hugo De Groot, Martin K. Van Ittersum, Kenneth Cassman
How Good Is Good Enough? Data Requirements For Reliable Crop Yield Simulations And Yield-Gap Analysis, Patricio Grassini, Lenny G.J. Van Bussel, Justin Van Wart, Joost Wolf, Lieven Claessens, Haishun Yang, Hendrik Boogaard, Hugo De Groot, Martin K. Van Ittersum, Kenneth Cassman
Department of Agronomy and Horticulture: Faculty Publications
Numerous studies have been published during the past two decades that use simulation models to assess crop yield gaps (quantified as the difference between potential and actual farm yields), impact of climate change on future crop yields, and land-use change. However, there is a wide range in quality and spatial and temporal scale and resolution of climate and soil data underpinning these studies, as well as widely differing assumptions about cropping-system context and crop model calibration. Here we present an explicit rationale and methodology for selecting data sources for simulating crop yields and estimating yield gaps at specific locations that …
Harvest Incentives: A Tool For Managing Aquatic Invasive Species, Bob Wiltshire, Nathan Stone, Marshall Meyers, Bill Hyatt, Lori Williams, Jason Goldberg, Susan Pasko, Leah Elwell
Harvest Incentives: A Tool For Managing Aquatic Invasive Species, Bob Wiltshire, Nathan Stone, Marshall Meyers, Bill Hyatt, Lori Williams, Jason Goldberg, Susan Pasko, Leah Elwell
National Invasive Species Council
Conclusion
The success of any harvest incentive program to address aquatic invasive species will depend upon numerous biological, socioeconomic, and legal considerations. Programs that encourage harvest may be a successful management tool in targeting small, distinct populations; in high priority areas within a larger invasion; or they may play a supplementary role within larger control programs. Their use, however, will require careful review, planning, and monitoring to ensure success and that they do not unintentionally lead to further spread of invasive species, cause additional harm to native species, or waste valuable resources.
Yield Gap Analysis With Local To Global Relevance—A Review, Martin K. Van Ittersum, Kenneth Cassman, Patricio Grassini, Joost Wolf, Pablo Tittonell, Zvi Hochman
Yield Gap Analysis With Local To Global Relevance—A Review, Martin K. Van Ittersum, Kenneth Cassman, Patricio Grassini, Joost Wolf, Pablo Tittonell, Zvi Hochman
Department of Agronomy and Horticulture: Faculty Publications
Yields of crops must increase substantially over the coming decades to keep pace with global food demand driven by population and income growth. Ultimately global food production capacity will be limited by the amount of land and water resources available and suitable for crop production, and by biophysical limits on crop growth. Quantifying food production capacity on every hectare of current farmland in a consistent and transparent manner is needed to inform decisions on policy, research, development and investment that aim to affect future crop yield and land use, and to inform on-ground action by local farmers through their knowledge …
Is Local Food In Your Future?: An Analysis Of The Viability Of The Local Food Movement, Jennifer A. Sliney
Is Local Food In Your Future?: An Analysis Of The Viability Of The Local Food Movement, Jennifer A. Sliney
Pell Scholars and Senior Theses
The Local Food Movement has arisen in recent decades as a proposed solution to problems in the current food distribution system. Proponents of the movement look to solve problems such as unsustainable farming practices, greenhouse gas emissions, and unhealthy communities. Skeptics raise questions as to whether local food is truly capable of accomplishing any of those. The author proposes that as a solution, aspects of the Local Food Movement such as urban agriculture and attempts at community development should be taken more seriously in order to create a better future for the land and people alike.
Agriculture And Food In Crisis: Conflict, Resistance, And Renewal [Book Review], Charles A. Francis
Agriculture And Food In Crisis: Conflict, Resistance, And Renewal [Book Review], Charles A. Francis
Department of Agronomy and Horticulture: Faculty Publications
Edited by Fred Magdoff and Brian Tokar. 2010. Monthly Review Press, New York, New York, United States. 348 p. Paperback, cloth US$ 75.00, paper US$ 18.95, ISBN-13 978-1-58367-226-6.
That doubling of food production over the next four decades will be needed to adequately nourish our human population is not news, but the incredible steps essential to achieve that goal and their political and social implications are less well reported. In this series of 16 essays edited by Fred Magdoff and Brian Tokar, several thoughtful specialists in global food issues explore the historical, biological, economic, energy, political and social dimensions of …
The Role Of Sorghum In Food Security In Central America, Lloyd W. Rooney
The Role Of Sorghum In Food Security In Central America, Lloyd W. Rooney
INTSORMIL Presentations
Discusses the qualities of sorghum that make it suitable for human consumption, with a focus on its use in Central America.
The Importance Of Sorghum Grain Colour And Hardness, And Their Causes And Measurement, Doreen Mwiita Hikeezi
The Importance Of Sorghum Grain Colour And Hardness, And Their Causes And Measurement, Doreen Mwiita Hikeezi
INTSORMIL Presentations
Discusses sorghum grain color and kernel hardness, assessment methods, and the importance of each to the overall quality of the grain.
Eagle Lager: A Sorghum Success Story On Many Levels, Ian Mackintosh
Eagle Lager: A Sorghum Success Story On Many Levels, Ian Mackintosh
INTSORMIL Presentations
In 1999 in Uganda we were faced with a static but highly competitive market.
Needed to grow our market and to do this we needed to make beer cheaper
It was felt that a suitable local ingredient would reduce the cost of manufacture and stimulate local agriculture and the economy as well as provide opportunities for growth and profit for the company.
An extensive base line study of the Ugandan agricultural sector was undertaken to determine what was “out there.”
It was clear that there was enormous potential but little else.
Sorghum seemed the logical starting point because there was …
Mycotoxins In Grains – Causes, Prevention And Control, Hester F. Vismer
Mycotoxins In Grains – Causes, Prevention And Control, Hester F. Vismer
INTSORMIL Presentations
Discusses mycotoxins, their effect on grain, mitigation considerations, and resulting human toxicology.
Effects Of Malting And Fermentation On The Composition And Functionality Of Sorghum Flours, Onesmo N.O. Mella
Effects Of Malting And Fermentation On The Composition And Functionality Of Sorghum Flours, Onesmo N.O. Mella
INTSORMIL Presentations
Includes information about the sorghum market in Tanzania, and provides an overview of the chemical components present in sorghum grain and their effects on the nutritional qualities of the grain with respect to human consumption. Explains that malting and fermentation improve the nutritional profile of sorghum grain, and describes the methods used to test this hypothesis.
Simple Sorghum Grain Quality Evaluation Procedures, Janet Taylor, John R.N. Taylor
Simple Sorghum Grain Quality Evaluation Procedures, Janet Taylor, John R.N. Taylor
INTSORMIL Presentations
Most Appropriate Sorghum Grain Quality Criteria Identified
•High tannin/non-tannin
•Hardness
•Germinability
•Grain purity
•Grain color
Tannin, hardness, germinability and grain purity have been accepted as draft ICC (International Association for Cereal Science and Technology) standard methods.
The Green Revolution Of The 1960'S And Its Impact On Small Farmers In India, Kathryn Sebby
The Green Revolution Of The 1960'S And Its Impact On Small Farmers In India, Kathryn Sebby
Department of Environmental Studies: Undergraduate Student Theses
The Green Revolution was initiated in the 1960’s to address the issue of malnutrition in the developing world. The technology of the Green Revolution involved bio-engineered seeds that worked in conjunction with chemical fertilizers and heavy irrigation to increase crop yields. The technology was readily adopted in many stated in India and for some was a great success. However, there were many farmers who could not afford the inputs necessary to participate in the Green Revolution and gaps between social classes widened as wealthy farmers got wealthier and poor farmers lagged behind. This paper discusses how small farmers were affected …