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Chromatic analysis for predicting anthocyanin content in fruits and vegetables Ciênc. Tecnol. Aliment.
VIEIRA,Luciana Marques; MARINHO,Letícia Mafle Guimarães; ROCHA,Juliana de Cássia Gomes; BARROS,Frederico Augusto Ribeiro; STRINGHETA,Paulo César.
Abstract The objective of this study was to develop simple mathematical models for the prediction of the total anthocyanin content of fruits and vegetables, using colorimetry. Phenolic extracts of 13 species of fruits and vegetables were produced using 70% acidified ethanol and 70% ethanol. The quantification of the total anthocyanins of the extracts was performed by the spectrophotometric method, and the color characterization was done through the tristimulus colorimeter. The correlation between the L* value and the anthocyanin content was high (r = - 0.95) for extracts produced with 70% ethanol and diluted 20 times. Linear equations based on colorimetric coordinates, with R2 from 0.80 to 0.99, were obtained using 70% ethanol and 70% acidified ethanol as...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anthocyanins; Colorimetry; Mathematical models; Fruits and vegetables.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000200415
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HARVESTING FRUITS USING A MOBILE PLATFORM: A CASE STUDY APPLIED TO CITRUS REA
Ferreira,Marcos D.; Sanchez,Augusto C.; Braunbeck,Oscar A.; Santos,Eduardo A..
ABSTRACT Harvesting fruits and vegetables has been a challenge. Mobile platforms for harvesting vegetables and fruits have been used, but with some limitations, such as their applicability for a certain time of the year and for a specific crop. A mobile platform was initially developed for harvesting fresh market tomatoes, mainly staked in Brazil. However, after field trials, many problems were identified, such as crop use limitation and machine structure problems. Therefore, the initial project was reformulated to assume different functions, with a retractable and smaller frame and the possibility of adding on other devices, expanding crop harvest and farm use. The concept of a hybrid vehicle with one electric power generator to drive all four wheels with...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fruits and vegetables; Harvesting aid; Hybrid vehicle; Multiuse.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000200293
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A TÉSZ-en keresztüli értékesítést motiváló tényezők és körülmények AgEcon
Dudas, Gyula.
A TÉSZ-en keresztüli értékesítés indokait és a TÉSZ tagok aktivitását kérdő¬íves felmérés alapján vizsgálva megállapítható, hogy a ZÖLD-TERMÉK Szövetkezetnél, valamint a MÓRAKERT Szövetkezetnél a TÉSZ a termelő számára is elfogadha¬tó mennyiségű áru átvételével, a beszállításkor mutatott rugalmassággal, a megbíz¬hatósággal és a pozitív személyes kapcsolatok meglétével ösztönzi tagjait a TÉSZ-en keresztüli értékesítésre. A rugalmas és gyors fizetési feltételek, valamint az érvé¬nyes szerződések további ösztönzést jelentenek. Az előbbieknél kevésbé fontos tényező az ár, a TÉSZ által nyújtott szaktanácsadás, valamint az egyéb szolgáltatások.A ZÖLD-TERMÉK Szövetkezetnél a tagok többsége rendszeresen vagy alkalomszerűen igénybe veszi az utóbbiakat. Az alapító...
Tipo: Journal Article Palavras-chave: Zöldség-gyümölcs; Értékesítés; TÉSZ; Motiváció; Szolgáltatások; Fruits and vegetables; Sale; Producer group; Motivation; Services; Agribusiness; Crop Production/Industries; Institutional and Behavioral Economics.
Ano: 2009 URL: http://purl.umn.edu/92496
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Can Food Stamps Do More to Improve Food Choices? An Economic Perspective--Higher Cost of Food in Some Areas May Affect Food Stamp Households' Ability To Make Healthy Food Choices AgEcon
Nord, Mark; Hopwood, Heather.
The cost of “enough food,” estimated from the amount that low- and medium-income households in a geographic area report needing to spend to just meet their food needs, differs substantially across States and among metropolitan areas. In areas with high food costs, many food-stamp recipients are likely to have inadequate food resources to support healthy food choices.
Tipo: Report Palavras-chave: Food Stamp Program; Food consumption; Food prices; Food expenditures; Nutrition education; Behavioral economics; Food choices; Diet; Health; Fruits and vegetables; Food Assistance and Nutrition Research Program; FANRP; ERS; USDA; Agricultural and Food Policy; Consumer/Household Economics; Food Consumption/Nutrition/Food Safety; Institutional and Behavioral Economics.
Ano: 2007 URL: http://purl.umn.edu/59429
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System Approach for Evaluating Locally Grown Produce Issues AgEcon
Berruto, Remigio; Busato, Patrizia.
The potential advantages of locally grown produce are mainly related to the coexistence of production and consumption in the same area. These advantages are: reduced transportation, freshness, better taste, easy traceability, transparency, food safety, environmental sustainability and community development. Despite these positive aspects, the money spent for locally grown produce represents only a small percentage of the total money spent for fresh produce purchases. On the other hand, interest is growing for furnishing produce to local produce schools, hospitals and public institutions. The supply chains of locally grown produce are classified into direct marketing distributions (farmers’ markets, CSAs, roadside stands, on-farm stores) and indirect...
Tipo: Book Palavras-chave: System approach; Locally grown; Supply–chain; Fruits and vegetables; Logistics; Simulation; Agribusiness; Agricultural and Food Policy; Farm Management; Food Consumption/Nutrition/Food Safety.
Ano: 2009 URL: http://purl.umn.edu/58713
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Economic Potential of Using High Tunnel Hoop Houses to Produce Fruits and Vegetables AgEcon
Donnell, Jeri; Biermacher, Jon T.; Upson, Steve.
Abstract Hoop house plasticulture has been promoted as a production technology that allows fruit and vegetable crops to be grown in the cool season months in early spring and late fall. At this time little information regarding the economics of hoop house plasticulture is available. Two fruit and vegetable production systems were developed for growing conditions in south-central Oklahoma. The first system has a spinach crop followed by field tomato, and the second system has annually produced strawberry followed by yellow and zucchini squash. Crop production data were collected in a three-year randomized and replicated experiment. The objectives were (1) to determine the expected cost of production for each crop and systems, (2) to determine the...
Tipo: Conference Paper or Presentation Palavras-chave: Breakeven prices; Economics; Fruits and vegetables; Hoop houses; Plasticulture; Agribusiness; Farm Management; Labor and Human Capital; Marketing; Production Economics.
Ano: 2011 URL: http://purl.umn.edu/98840
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Do Income Constraints Inhibit Spending on Fruits and Vegetables Among Low-Income Households? AgEcon
Stewart, Hayden; Blisard, Noel; Jolliffe, Dean.
This study assesses whether income constraints inhibit spending on fruits and vegetables among low-income households. If this is the case, then it is hypothesized that the distribution of expenditures on fruits and vegetables by low-income households should be stochastically dominated by the distribution of expenditures on these same food items by other households. Moreover, it must be the case that low-income households would increase their spending on fruits and vegetables in response to an increase in their income. Using household data from the 2000 Consumer Expenditure Survey, a test of stochastic dominance is performed. Censored quantile regressions are also estimated at selected points of the conditional expenditure distribution. Low income...
Tipo: Journal Article Palavras-chave: Censored least absolute deviations; Consumption; Fruits and vegetables; Low-income households; Nutrition; Sample design; Stochastic dominance; Consumer/Household Economics.
Ano: 2003 URL: http://purl.umn.edu/31064
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The Economics of Health Behavior and Vitamin Consumption AgEcon
Schroeter, Christiane; Anders, Sven M.; Carlson, Andrea; Rickard, Bradley J..
Conventionally, fruits and vegetables have been the major source of micronutrients. However, with the rising availability of nutritional supplements, U.S. consumers no longer need to rely on food alone for their nutritional needs. Time-pressured consumers with limited cooking skills and nutrition knowledge may find it easier to take vitamin supplements. The objective of this paper is to determine the impact of lifestyle, diet behavior including vitamin supplement consumption, and food culture on diet quality outcomes as measured by the Healthy Eating Index-2005 (HEI) and total energy intake. We use the 2003-04 U.S. National Health and Nutrition Examination Survey (NHANES) to examine the relationship between HEI and caloric intake. Further, our specific...
Tipo: Conference Paper or Presentation Palavras-chave: Vitamins; Supplements; Fruits and vegetables; NHANES; Health production; Healthy Eating Index - 2005; Agricultural and Food Policy; Consumer/Household Economics; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Health Economics and Policy; I1; H2.
Ano: 2010 URL: http://purl.umn.edu/116391
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The entry price threshold in EU F&V sector: deterrence or effective barrier? AgEcon
Cioffi, Antonio; Santeramo, Fabio G..
The paper investigates the effects of the entry price scheme for fresh fruit and vegetables. The analysis is conducted on the EU prices of tomatoes, lemons and apples for some of the main competing countries on the EU domestic markets: Morocco, Argentina, Turkey and China. The econometric analysis is based on testing and estimating a switching vector autoregressive model with endogenous threshold entry price level. The model shows the isolation effects and the accumulation of SIVs above the trigger entry price. This paper contributes to clarify the role played by the EPS in avoid or deter low priced imports from main EU partner Countries.
Tipo: Conference Paper or Presentation Palavras-chave: Fruits and vegetables; Entry price system; Trade policy; TVAR; Agricultural and Food Policy; F13; Q17; Q18.
Ano: 2011 URL: http://purl.umn.edu/99432
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Can Food Stamps Do More to Improve Food Choices? An Economic Perspective AgEcon
Guthrie, Joanne F.; Andrews, Margaret S.; Frazao, Elizabeth; Leibtag, Ephraim S.; Lin, Biing-Hwan; Mancino, Lisa; Nord, Mark; Prell, Mark A.; Smallwood, David M.; Variyam, Jayachandran N.; Ver Ploeg, Michele.
Food stamp recipients, like other Americans, struggle with nutrition problems associated with choice of foods, as well as amounts. This series of Economic Information Bulletins compiles evidence to help answer the question of whether the Food Stamp Program can do more to improve the food choices of participants. It examines the role of affordability and price of healthful foods in influencing food choices and the likely success of any policy targeted at changing food choices through food stamp bonuses or restrictions. It also examines other approaches to changing food choices, including nutrition education and potential strategies drawn from behavioral economics literature. Meaningful improvements in the diets of food stamp recipients will likely depend on...
Tipo: Report Palavras-chave: Food Stamp Program; Food consumption; Food prices; Food expenditures; Nutrition education; Behavioral economics; Food choices; Diet; Health; Fruits and vegetables; Food Assistance and Nutrition Research Program; FANRP; ERS; USDA; Agricultural and Food Policy; Consumer/Household Economics; Food Consumption/Nutrition/Food Safety; Institutional and Behavioral Economics.
Ano: 2007 URL: http://purl.umn.edu/59417
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Current preferences of Southern Mediterranean Countries and their erosion after variations of the entry price system AgEcon
Martinez-Gomez, Victor.
It has been calculated the value of the preference margin granted to Euro-Mediterranean partners in the cases of reduced entry prices in force, and then it has been simulated the impact of EU trade liberalisation for F&V on such values after two different alternatives of EP system variations resulting from a WTO agreement. The results of current preferences indicate that in monetary terms there is only a significant relevance of the preferential EPs in the case of Moroccan tomatoes and, to a lesser extent, in Moroccan clementines. Very little is the relevance for Jordanian tomatoes and cucumbers and Moroccan courgettes, cucumbers and artichokes. In the cases of oranges from Egypt, Morocco, Israel and Jordan, preferential EP has not meant potential...
Tipo: Conference Paper or Presentation Palavras-chave: Entry prices; Erosion of trade preferences; Euro-Mediterranean trade; Fruits and vegetables; International Relations/Trade.
Ano: 2008 URL: http://purl.umn.edu/44157
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Can Food Stamps Do More to Improve Food Choices? An Economic Perspective-Nutrition Information: Can It Improve the Diets of Low-Income Households? AgEcon
Guthrie, Joanne F.; Variyam, Jayachandran N..
The Food Stamp Nutrition Education (FSNE) component of the Food Stamp Program is intended to improve the food choices, diet quality, and health of program participants. This brief discusses the FSNE program, how it operates, and how it has grown over time. The brief also considers the challenges of nutrition education in general and discusses the research and evaluation needs suggested by the findings.
Tipo: Report Palavras-chave: Food Stamp Program; Food consumption; Food prices; Food expenditures; Nutrition education; Behavioral economics; Food choices; Diet; Health; Fruits and vegetables; Food Assistance and Nutrition Research Program; FANRP; ERS; USDA; Agricultural and Food Policy; Consumer/Household Economics; Food Consumption/Nutrition/Food Safety; Health Economics and Policy; Institutional and Behavioral Economics.
Ano: 2007 URL: http://purl.umn.edu/59434
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The Demand for Specialty-Crop Insurance: Adverse Selection and Inefficiency AgEcon
Richards, Timothy J.; Mischen, Pamela.
The twin problems of moral hazard and adverse selection are often blamed for the lack of insurance for many fruits and vegetables. This paper develops an alternative method of testing for adverse selection that uses a two-stage approach to determine the effects of technical inefficiency on the demand for insurance. With this approach, technical inefficiency is interpreted as an indicator of adverse selection. Because there is no active insurance market for many specialty crops, and thin markets for those that are insurable, a contingent valuation approach is used to obtain the data necessary to estimate the demand for three different types of insurance. The results suggest adverse selection may be a deterrent to the viability of extending the breadth of...
Tipo: Journal Article Palavras-chave: Contingent valuation; Crop insurance; Fruits and vegetables; Moral hazard; Risk; Uncertainty; Agribusiness; Financial Economics; Risk and Uncertainty.
Ano: 1998 URL: http://purl.umn.edu/90435
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Can Food Stamps Do More to Improve Food Choices? An Economic Perspective-Stretching the Food Stamp Dollar: Regional Price Differences Affect Affordability of Food AgEcon
Leibtag, Ephraim S..
Significant regional differences in food prices affect how far food stamp benefits can go toward enhancing the diet of low-income consumers in a given region. In regions where average food prices exceed the national average, food stamp benefits may not provide the same level of coverage as the same benefit would in below-average-price regions. This report measures average prices paid across U.S. regions. Results show that a household made up of a family of four in the East or West could spend $32-$48 more per month for a similar amount of food than the average U.S. household, whereas a household in the South and Midwest could spend $12-28 less per month than the average U.S. household.
Tipo: Report Palavras-chave: Food Stamp Program; Food consumption; Food prices; Food expenditures; Nutrition education; Behavioral economics; Food choices; Diet; Health; Fruits and vegetables; Food Assistance and Nutrition Research Program; FANRP; ERS; USDA; Agricultural and Food Policy; Consumer/Household Economics; Food Consumption/Nutrition/Food Safety; Institutional and Behavioral Economics.
Ano: 2007 URL: http://purl.umn.edu/59428
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Fruit and Vegetable Consumption by Low-Income Americans: Would a Price Reduction Make a Difference? AgEcon
Dong, Diansheng; Lin, Biing-Hwan.
Americans’ diets, particularly those of low-income households, fall short of Government recommendations in the quantity of fruits and vegetables consumed. Some proposals suggest that a price subsidy for those products would encourage low-income Americans to consume more of them. This study estimated that a 10-percent subsidy would encourage low-income Americans to increase their consumption of fruits by 2.1-5.2 percent and vegetables by 2.1-4.9 percent. The annual cost of such a subsidy for low-income Americans would be about $310 million for fruits and $270 million for vegetables. And most would still not meet Federal dietary recommendations.
Tipo: Report Palavras-chave: Price subsidy; Demand elasticity; Food consumption; Fruits and vegetables; Low income; Homescan Data; Supplemental Nutrition Assistance Program (SNAP); National Health and Nutrition Examination Survey (NHANES); And MyPyramid; Agricultural and Food Policy; Consumer/Household Economics; Demand and Price Analysis.
Ano: 2009 URL: http://purl.umn.edu/55835
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VARIAÇÃO DO NÍVEL GERAL DE PREÇOS DE HORTIFRUTIGRANJEIROS COMERCIALIZADOS NO CEASA-GO AgEcon
Machado, Andre Grossi; Figueiredo, Reginaldo Santana.
O objetivo do presente trabalho é desenvolver um índice de preços para produtos hortifrutigranjeiros comercializados no atacado em Goiás. A pesquisa foi motivada pelo interesse no estudo do comportamento dos preços de produtos hortifrutigranjeiros e pela necessidade e importância do desenvolvimento de indicadores econômicos regionais. Foram utilizados dados mensais referentes aos volumes comercializados em toneladas e ao preço médio (R$/toneladas) de todos os 283 produtos comercializados pelo CEASA-GO, e procurou-se seguir alguns passos fundamentais apontados pela literatura para o processo de construção de índice de preços. Como resultado, foram selecionados 34 produtos para compor a cesta, e então calculados os índices para seus dados pelas soluções de...
Tipo: Conference Paper or Presentation Palavras-chave: Variação de preços; Produtos hortifrutigranjeiros; Goiás; Price variation; Fruits and vegetables; Goias; Brazil; Crop Production/Industries.
Ano: 2008 URL: http://purl.umn.edu/112744
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IDENTIFYING PRIORITIES FOR PESTICIDE RESIDUE REDUCTION AgEcon
Kuchler, Fred; Ralston, Katherine L.; Unnevehr, Laurian J..
Tipo: Conference Paper or Presentation Palavras-chave: Pesticide residues; Dietary intakes; Dietary risks; Fruits and vegetables; Crop Production/Industries.
Ano: 1995 URL: http://purl.umn.edu/25963
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Attitudes of Maltese Consumers Towards Quality in Fruit and Vegetables in Relation to Their Food-Related Lifestyles AgEcon
Dimech, Marco; Caputo, Vincenzina; Canavari, Maurizio.
www.ifama.org
Tipo: Journal Article Palavras-chave: Food-related lifestyles approach; Fruits and vegetables; Consumers’ attitudes; Food quality; Maltese consumers; Agribusiness; Consumer/Household Economics; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; Marketing.
Ano: 2011 URL: http://purl.umn.edu/117602
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LOW-INCOME HOUSEHOLDS' EXPENDITURES ON FRUITS AND VEGETABLES AgEcon
Blisard, Noel; Stewart, Hayden; Jolliffe, Dean.
This report analyzes fruit and vegetable expenditures by low-income households and higher income households, and compares the sensitivity of both groups' purchases to changes in income. On average, low-income households spent $3.59 per capita per week on fruits and vegetables in 2000 while higher income households spent $5.02-a statistically significant difference. In addition, a statistical demand model indicates that marginal increases in income received by low-income households are not spent on additional fruits and vegetables. In contrast, increases in income received by higher income households do increase their fruit and vegetable expenditures. One interpretation of this finding is that low-income households will allocate an additional dollar of...
Tipo: Report Palavras-chave: Low-income; Food expenditures; Fruits and vegetables; Stochastic dominance; Food Consumption/Nutrition/Food Safety.
Ano: 2004 URL: http://purl.umn.edu/34041
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Concentration of the trade and the small-scale fruit and vegetable producers – practices in Hungary and in the European Union AgEcon
Kurti, Andrea; Kozak, Anita; Seres, Antal.
This study examines the conflicts arising from the requirements of the food retail chains and their possible solutions, based on an analysis of the foreign and domestic trade literature and on a domestic assessment of 2008. Direct supplies from small-scale producers have future prospects only in the field of niche market products. Only production organisations integrating small-scale producers may be successful in the supply of large quantity products of homogeneous quality. In Hungary, similar organisations – principally POs – still do not have a role comparable to that they fulfil in more developed countries of the European Union in the field of the supplies to the food retail chains. For increasing supplies, the domestic small-scale producers should...
Tipo: Journal Article Palavras-chave: Concentration; Food retail chains; Supply; Small-scale producers; Fruits and vegetables; International Relations/Trade.
Ano: 2010 URL: http://purl.umn.edu/59047
Registros recuperados: 29
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