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Consumer Demand For Potato Products And Willingness-To-Pay For Low-Acrylamide, Sulfite-Free Fresh Potatoes And Dices: Evidence From Lab Auctions, Katie Lacy, Wallace E. Huffman 2016 Iowa State University

Consumer Demand For Potato Products And Willingness-To-Pay For Low-Acrylamide, Sulfite-Free Fresh Potatoes And Dices: Evidence From Lab Auctions, Katie Lacy, Wallace E. Huffman

Wallace Huffman

We assess consumer demand for traditional fresh potatoes and processed potato products and willingness to pay for new experimental low-acrylamide and sulfite-free potato products. Demand for fresh potatoes, potato chips, and fries is unaffected by household income or education, but demand for chips and fries is affected by consumer age and exercise habits. Subjects display increased willingness to pay for new potato products after receiving a private company perspective about the technology and risks associated with exposure to acrylamide, a carcinogen, in fried conventional potatoes and a new product, potato dices. We find that consumers are willing to pay for ...


Value Added: Learning Communities, Experiential Process And Student Engagement In Life Long Learning In The Culinary Arts, Thomas J. Smyth 2016 CUNY Kingsborough Community College

Value Added: Learning Communities, Experiential Process And Student Engagement In Life Long Learning In The Culinary Arts, Thomas J. Smyth

Learning Communities Research and Practice

Culinary Arts training at the associates level presents a set of challenges to the instructor. It has been my experience that as the work environment is changing, students face new challenges in the kitchen, including a new mix of skills, both technical and social in nature. In this piece, I reflect on a promising learning community model at our college.


Exploring The Connection Between Community Food Security Initiatives And Social-Cognitive Factors On Dietary Intake, Diana Cuy Castellanos, Josh Keller, Emma Majchrzak 2016 University of Dayton

Exploring The Connection Between Community Food Security Initiatives And Social-Cognitive Factors On Dietary Intake, Diana Cuy Castellanos, Josh Keller, Emma Majchrzak

Diana Cuy Castellanos

Food insecurity and poor dietary consumption continue to impact low-income populations in the U.S. However, communities are developing ways to address it at the local level. Community Food Security Initiatives (CFSI) focus on increasing a sustainable, healthy food supply and food system while addressing food insecurity and dietary quality within a community.

The purpose of this study was two-fold: (1) explore CFSIs in low-income areas in a metropolitan Midwest city and (2) examine the effects of the initiatives along with other social-cognitive factors on fruit and vegetable consumption in persons participating in local CFSIs.

This was a mixed-methods study ...


An Investigation Into Spent Coffee Waste As A Renewable Source Of Bioactive Compounds And Industrially Important Sugars, Damhan S. Scully, Amit Jaiswal, Nissreen Abu-ghannam 2016 Dublin Institute of Technology

An Investigation Into Spent Coffee Waste As A Renewable Source Of Bioactive Compounds And Industrially Important Sugars, Damhan S. Scully, Amit Jaiswal, Nissreen Abu-Ghannam

Articles

Conventional coffee brewing techniques generate vast quantities of spent espresso grounds (SEGs) rich in lignocellulose and valuable bioactives. These bioactive compounds can be exploited as a nutraceutical or used in a range of food products, while breakdown of lignocellulose generates metabolizable sugars that can be used for the production of various high-value products such as biofuels, amino acids and enzymes. Response surface methodology (RSM) was used to optimize the enzymatic saccharification of lignocellulose in SEGs following a hydrothermal pretreatment. A maximum reducing sugar yield was obtained at the following optimized hydrolysis conditions: 4.97 g of pretreated SEGs, 120 h ...


Sanitation And Hygiene Deficiencies As Contributing Factors In Contamination Of Imported Foods, Fengxia Dong, Helen H. Jensen 2016 Iowa State University

Sanitation And Hygiene Deficiencies As Contributing Factors In Contamination Of Imported Foods, Fengxia Dong, Helen H. Jensen

Helen Jensen

Imports of agricultural products into the United States represent a significant share of many foods consumed in the United States today. Increased income, better transportation, and global food supply chains support vast trade in agricultural products. In 2006, the United States imported more than $64 billion worth of agricultural products. Beverages, tropical products, fruits, and vegetables led the import value (Dohlman and Gehlhar, 2007).


Development Of An Online Food Safety Training For Employees Of University Farms And School Gardens, Angela M. Shaw, Catherine Strohbehn, Linda L. Naeve 2016 Iowa State University

Development Of An Online Food Safety Training For Employees Of University Farms And School Gardens, Angela M. Shaw, Catherine Strohbehn, Linda L. Naeve

Angela M. Shaw

With a rise in the number of publicly accessed fruit and vegetable growing venues, there is a need for food safety training for staff of these schools and research facilities. This project created a variety of media options to educate workers about proper ways to handle fruit and vegetables to ensure food safety.


Promoting Food Safety Awareness For Older Adults By Using Online Education Modules, Amber Roy, Sarah L. Francis, Angela Shaw, Lakshman Rajagopal 2016 Iowa State University

Promoting Food Safety Awareness For Older Adults By Using Online Education Modules, Amber Roy, Sarah L. Francis, Angela Shaw, Lakshman Rajagopal

Angela M. Shaw

Older adults are susceptible to and at greater risk for food-borne illness in comparison to those in other adult age groups. Online education is an underused method for the delivery of food safety information to this population. Three online mini-modules, based on social marketing theory (SMT), were created for and pilot-tested with older adults. These mini-modules were effective in promoting familiarity with food safety behaviors and were well-received, supporting the development of future SMT-based online education for this target audience.


Food Safety Education For Students And Workers In School Gardens And University Farms, John Dzubak, Angela Shaw, Catherine Strohbehn, Linda Naeve 2016 Iowa State University

Food Safety Education For Students And Workers In School Gardens And University Farms, John Dzubak, Angela Shaw, Catherine Strohbehn, Linda Naeve

Angela M. Shaw

The number of school gardens and university farms is increasing in the United States. Produce grown in these venues is often sampled in the classroom or incorporated into the food chain. Food safety education for students and workers is needed to ensure that produce is safe. Two 1-hr food safety curricula were developed to inform K–12 students and university farm researchers and workers about good agricultural practices. The validated curricula include four or five short video modules, activities, instructor/facilitator lesson plans, knowledge assessment quizzes, and instructor manuals. Piloting results indicated that participants increased food safety knowledge after viewing ...


On-Farm Food Safety: Cleaning And Sanitizing Guide, Catherine Strohbehn, Aubrey Mendonca, Lester Wilson, Paul Domoto, Margaret Smith, Byron Brehm-Stecher, Angela M. Shaw 2016 Iowa State University

On-Farm Food Safety: Cleaning And Sanitizing Guide, Catherine Strohbehn, Aubrey Mendonca, Lester Wilson, Paul Domoto, Margaret Smith, Byron Brehm-Stecher, Angela M. Shaw

Angela M. Shaw

Using good sanitation practices during production, harvesting, and packaging can help reduce the risk of microbial contamination of fresh produce. Soil, fertilizers, harvesting equipment, water, workers, or animals such as livestock, pets, and pests can be sources of harm- ful microorganisms that cause foodborne illness. Surfaces that come in contact with produce must be washed, rinsed, and sanitized regularly. Employees need to understand and use appropriate food handling practices.


Tissue-Specific Alterations Of Methyl Group Metabolism With Dna Hypermethylation In The Zucker (Type 2) Diabetic Fatty Rat., Kelly T. Williams, Kevin Schalinske 2016 Iowa State University

Tissue-Specific Alterations Of Methyl Group Metabolism With Dna Hypermethylation In The Zucker (Type 2) Diabetic Fatty Rat., Kelly T. Williams, Kevin Schalinske

Kevin Schalinske

BackgroundAltered methyl group and homocysteine metabolism were tissue-specific, persistent, and preceded hepatic DNA hypomethylation in type 1 diabetic rats. Similar metabolic perturbations have been shown in the Zucker (type 2) diabetic fatty (ZDF) rat in the pre-diabetic and early diabetic stages, but tissue specificity and potential impact on epigenetic marks are unknown, particularly during pathogenesis.

Methods ZDF (fa/fa) and lean (+/?) control rats were killed at 12 and 21 weeks of age, representing early and advanced diabetic conditions. Blood and tissues were analysed with respect to methyl group and homocysteine metabolism, including DNA methylation.

Results At 12 weeks, hepatic ...


Resistant Starch: Promise For Improving Human Health, Diane F. Birt, Terri D. Boylston, Suzanne Hendrich, Jay-Lin Jane, James Hollis, Li Li, John F. McClelland, Samuel Moore, Gregory J. Phillips, Matthew James Rowling, Kevin Schalinske, Marvin Paul Scott, Elizabeth M. Whitley 2016 Iowa State University

Resistant Starch: Promise For Improving Human Health, Diane F. Birt, Terri D. Boylston, Suzanne Hendrich, Jay-Lin Jane, James Hollis, Li Li, John F. Mcclelland, Samuel Moore, Gregory J. Phillips, Matthew James Rowling, Kevin Schalinske, Marvin Paul Scott, Elizabeth M. Whitley

Kevin Schalinske

Ongoing research to develop digestion-resistant starch for human health promotion integrates the disciplines of starch chemistry, agronomy, analytical chemistry, food science, nutrition, pathology, and microbiology. The objectives of this research include identifying components of starch structure that confer digestion resistance, developing novel plants and starches, and modifying foods to incorporate these starches. Furthermore, recent and ongoing studies address the impact of digestion-resistant starches on the prevention and control of chronic human diseases, including diabetes, colon cancer, and obesity. This review provides a transdisciplinary overview of this field, including a description of types of resistant starches; factors in plants that affect ...


Mapping Of Iron And Zinc Quantitative Trait Loci In Soybean For Association To Iron Deficiency Chlorosis Resistance, Keith E. King, Gregory A. Peiffer, Manju B. Reddy, Nick Lauter, Shun Fu Lin, Silvia R. Cianzio, Randy C. Shoemaker 2016 Iowa State University

Mapping Of Iron And Zinc Quantitative Trait Loci In Soybean For Association To Iron Deficiency Chlorosis Resistance, Keith E. King, Gregory A. Peiffer, Manju B. Reddy, Nick Lauter, Shun Fu Lin, Silvia R. Cianzio, Randy C. Shoemaker

Manju B. Reddy

Iron deficiency chlorosis (IDC) in soybean results in yield losses or in extreme cases death. Breeding for resistance has shown limited success with no cultivar having complete resistance. Mineral content of the soybean could be an indicator of the ability of the plant to withstand the effects of IDC. Iron (Fe) and zinc (Zn) concentration was examined in soybean seed and leaves. SSR, RFLP, and BARCSOYSSR markers were used to construct a linkage map used for mapping of Fe and Zn concentrations. The QTL analysis for the combined data identified one major QTL for seed Fe accumulation on chromosome 20 ...


Inhibition Of Non-Haem Iron Absorption In Man By Polyphenolic-Containing Beverages, Richard F. Hurrell, Manju B. Reddy, James D. Cook 2016 Swiss Federal Institute of Technology, Zurich

Inhibition Of Non-Haem Iron Absorption In Man By Polyphenolic-Containing Beverages, Richard F. Hurrell, Manju B. Reddy, James D. Cook

Manju B. Reddy

The effects of different polyphenol-containing beverages on Fe absorption from a bread meal were estimated in adult human subjects from the erythrocyte incorporation of radio-Fe. The test beverages contained different polyphenol structures and were rich in either phenolic acids (chlorogenic acid in coffee), monomeric flavonoids (herb teas, camomile (Matricaria recutita L.)), vervain (Verbena officinalis L.), lime flower (Tilia cordata Mill.), pennyroyal (Mentha pulegium L.) and peppermint (Mentha piperita L.), or complex polyphenol polymerization products (black tea and cocoa). All beverages were potent inhibitors of Fe absorption and reduced absorption in a dose-dependent fashion depending on the content of total polyphenols ...


Oxalate And Phytate Of Soy Foods, Ismail A. Al-Wahsh, Harry T. Horner, Reid G. Palmer, Manju B. Reddy, Linda K. Massey 2016 Washington State University

Oxalate And Phytate Of Soy Foods, Ismail A. Al-Wahsh, Harry T. Horner, Reid G. Palmer, Manju B. Reddy, Linda K. Massey

Manju B. Reddy

The consumption of foods made from soybeans is increasing because of their desirable nutritional value. However, some soy foods contain high concentrations of oxalate and/or phytate. Oxalate is a component of calcium oxalate kidney stones, whereas phytate is an inhibitor of calcium kidney stone formation. Thirty tested commercial soy foods exhibited ranges of 0.02−2.06 mg oxalate/g and 0.80−18.79 mg phytate/g. Commercial soy foods contained 2−58 mg of total oxalate per serving and 76−528 mg phytate per serving. Eighteen of 19 tofu brands and two soymilk brands contained less than ...


An Evaluation Of Edta Compounds For Iron Fortification Of Cereal-Based Foods, Richard F. Hurrell, Manju B. Reddy, Joseph Burri, James D. Cook 2016 Nestlé Research Centre

An Evaluation Of Edta Compounds For Iron Fortification Of Cereal-Based Foods, Richard F. Hurrell, Manju B. Reddy, Joseph Burri, James D. Cook

Manju B. Reddy

Fe absorption was measured in adult human subjects consuming different cereal foods fortified with radiolabelled FeSO4, ferrous fumarate or NaFeEDTA, or with radiolabelled FeSO4 or ferric pyrophosphate in combination with different concentrations of Na2EDTA. Mean Fe absorption from wheat, wheat–soyabean and quinoa (Chenopodium quinoa) infant cereals fortified with FeSO4 or ferrous fumarate ranged from 0·6 to 2·2 %. For each infant cereal, mean Fe absorption from ferrous fumarate was similar to that from FeSO4 (absorption ratio 0·91–1·28). Mean Fe absorption from FeSO4-fortified bread rolls was 1·0 ...


Genetic Modification Of Low Phytic Acid 1-1 Maize To Enhance Iron Content And Bioavailability, Maneesha R. Aluru, Steve R. Rodermel, Manju B. Reddy 2016 Iowa State University

Genetic Modification Of Low Phytic Acid 1-1 Maize To Enhance Iron Content And Bioavailability, Maneesha R. Aluru, Steve R. Rodermel, Manju B. Reddy

Manju B. Reddy

High phytate content in staple food crops is a major barrier to successful iron biofortification. We have exploited the low phytic acid 1-1 (lpa1-1) mutant of maize to generate transgenic plants with up-to 70 μg/g seed iron through the endosperm-specific overexpression of soybean ferritin, resulting in more than 2-fold improvement in iron bioavailability. The levels of bioavailable seed iron achieved in this study greatly exceed any achieved thus far and closely approach values estimated to have a nutritional impact on target populations. Gene expression studies reveal a large induction of the YS1 transporter in leaves and severe repression of ...


Iron Bioavailability Of Hemoglobin From Soy Root Nodules Using A Caco-2 Cell Culture Model, Amy K. Proulx, Manju B. Reddy 2016 Iowa State University

Iron Bioavailability Of Hemoglobin From Soy Root Nodules Using A Caco-2 Cell Culture Model, Amy K. Proulx, Manju B. Reddy

Manju B. Reddy

Heme iron has been identified in many plant sourcesmost commonly in the root nodules of leguminous plants, such as soy. Our objective was to test the effectiveness of soy root nodule (SRN) and purified soy hemoglobin (LHb) in improving iron bioavailability using an in vitro Caco-2 cell model, with ferritin response as the bioavailability index. We assessed bioavailability of iron from LHb (either partially purified (LHbA) or purified (LHbD)) with and without food matrix and compared it with that from bovine hemoglobin (BHb), ferrous sulfate (FeSO4), or SRN. Bioavailability of each treatment was normalized to 100% of the FeSO4 treatment ...


Androidal Fat Dominates In Predicting Cardiometabolic Risk In Postmenopausalwomen, O. A. Matvienko, D. L. Alekel, S. N. Bhupathiraju, Heike Hofmann, L. M. Ritland, M. B. Reddy, M. D. Van Loan, C. D. Perry 2016 University of Northern Iowa

Androidal Fat Dominates In Predicting Cardiometabolic Risk In Postmenopausalwomen, O. A. Matvienko, D. L. Alekel, S. N. Bhupathiraju, Heike Hofmann, L. M. Ritland, M. B. Reddy, M. D. Van Loan, C. D. Perry

Manju B. Reddy

We hypothesized that soy isoflavones would attenuate the anticipated increase in androidal fat mass in postmenopausal women during the 36-month treatment, and thereby favorably modify the circulating cardiometabolic risk factors: triacylglycerol, LDLC, HDL-C, glucose, insulin, uric acid, C-reactive protein, fibrinogen, and homocysteine. We collected data on 224 healthy postmenopausal women at risk for osteoporosis (45.8–65 y, median BMI 24.5) who consumed placebo or soy isoflavones (80 or 120 mg/d) for 36 months and used longitudinal analysis to examine the contribution of isoflavone treatment, androidal fat mass, other biologic factors, and dietary quality to cardiometabolic outcomes. Except ...


Echinacea Sanguinea And Echinacea Pallida Extracts Stimulate Glucuronidation And Basolateral Transfer Of Bauer Alkamides 8 And 10 And Ketone 24 And Inhibit P-Glycoprotein Transporter In Caco-2 Cells, Zhiyi Qiang, Catharine Hauck, Joe-Ann McCoy, Mark P. Widrlechner, Manju B. Reddy, Patricia A. Murphy, Suzanne Hendrich 2016 Iowa State University

Echinacea Sanguinea And Echinacea Pallida Extracts Stimulate Glucuronidation And Basolateral Transfer Of Bauer Alkamides 8 And 10 And Ketone 24 And Inhibit P-Glycoprotein Transporter In Caco-2 Cells, Zhiyi Qiang, Catharine Hauck, Joe-Ann Mccoy, Mark P. Widrlechner, Manju B. Reddy, Patricia A. Murphy, Suzanne Hendrich

Manju B. Reddy

The use of Echinacea as a medicinal herb is prominent in the United States, and many studies have assessed the effectiveness of Echinacea as an immunomodulator. We hypothesized that Bauer alkamides 8, 10, and 11 and ketone 24 were absorbed similarly either as pure compounds or from Echinacea sanguinea and Echinacea pallida ethanol extracts, and that these Echinacea extracts could inhibit the P-glycoprotein transporter in Caco-2 human intestinal epithelial cells. Using HPLC analysis, the permeation rate of Bauer alkamides by passive diffusion across Caco-2 cells corresponded with compound hydrophilicity (alkamide 8 > 10 > 11), independent of the plant extract matrix. Both ...


Fermentation And Lactic Acid Addition Enhance Iron Bioavailability Of Maize, Amy K. Proulx, Manju B. Reddy 2016 Iowa State University

Fermentation And Lactic Acid Addition Enhance Iron Bioavailability Of Maize, Amy K. Proulx, Manju B. Reddy

Manju B. Reddy

Maize is one of the most important cereal crops for human consumption, yet it is of concern due to its low iron bioavailability. The objective of this study was to determine the effects of processing on iron bioavailability in common maize products and elucidate better processing techniques for enhancing iron bioavailability. Maize products were processed to represent different processing techniques: heating (porridge), fermentation (ogi), nixtamalization (tortillas), and decortication (arepas). Iron and phytate contents were evaluated. Iron bioavailability was assessed using the Caco-2 cell model. Phytate content of maize products was significantly reduced by decortication (25.6%, p ) 0.003) and ...


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