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Registros recuperados: 9
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(E)-2-Nonenal determination in brazilian beers using headspace solid-phase microextraction and gas chromatographic coupled mass spectrometry (HS-SPME-GC-MS) Ciênc. Tecnol. Aliment.
Scherer,Rodrigo; Wagner,Roger; Kowalski,Cláudia Hoffmann; Godoy,Helena Teixeira.
(E)-2-nonenal is considered an important off-flavor of beer, related to the flavor of beer staling. In this study, a new method for determination of (E)-2-nonenal in beer using headspace solid-phase microextraction and gas chromatographic coupled mass spectrometry (HS-SPME-GC-MS) was developed and applied in Brazilian beer samples. The extractions were carried out in CAR-PDMS (carboxen-polydimethylsiloxane) fiber and the best results were found with 15 minutes of equilibrium and 90 minutes of extraction at 50 °C. The method was linear in the range from 0.02 to 4.0 μg.L-1 with correlation coefficient of 0.9994. The limits of detection and quantification were 0.01 and 0.02 μg.L-1, respectively. 96.5% of recovery and 4% precision (RSD) were obtained in the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Beer; (E)-2-nonenal; Off-flavor; Volatile compound; SPME.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612010000500024
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Fumonisin B1 and ochratoxin A in beers made in Brazil Ciênc. Tecnol. Aliment.
Kawashima,Luciane Mie; Vieira,Ana Paula; Soares,Lucia Maria Valente.
Samples of beer made in Brazil were analyzed for the presence of fumonisin B1 (FB1) and ochratoxin A (OTA). FB1 was searched for in 58 beer samples from 30 plants located in nine states. The samples were concentrated and cleaned up with strong ion exchange column, derivatized with OPA and analyzed by HPLC with fluorescence detection. The limit of detection was 0.26 ng.mL-1 and the average recovery was 98%. Twenty-five samples contained FB1 ranging from 1 to 40 ng.mL-1. Beer (123 samples) from 36 plants located in 5 states were analyzed for OTA by means of immunoaffinity column cleanup followed by liquid chromatography associated with fluorescence. The detection limit was 0.1 ng.mL-1 and the average recovery was 92%. Five samples contained OTA in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mycotoxins; Fumonisin B1; Ochratoxin A; Beer.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612007000200019
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Home Bias in U.S. Beer Consumption AgEcon
Lopez, Rigoberto A.; Matschke, Xenia.
We apply the Berry, Levinsohn and Pakes (1995) market equilibrium model (BLP) to data from 30 brands of beers sold in 12 U.S. cities over 20 quarters (1988-92) to estimate the consumers’ taste for beer characteristics (price, alcohol content, and calories) as well as for the cultural region of origin (USA, Anglo-European, Germanic, and countries bordering the U.S.). Consumer heterogeneity is allowed with respect to age, income and gender. Overall we end up with 7,200 beer brand observations (30x12x20) and 13,920 (58 random draws x 12 x 20) consumer observations. Empirical results indicate that indeed there is home bias with respect to European beers and somewhat less so with respect to beers from bordering countries (Mexico and Canada). Home bias is more...
Tipo: Conference Paper or Presentation Palavras-chave: Home bias; Beer; Country of origin; Demand; Differentiated products; Food Consumption/Nutrition/Food Safety.
Ano: 2007 URL: http://purl.umn.edu/7883
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Intake of Beer, Wine and Spirits and Risk of Heavy Drinking and Alcoholic Cirrhosis Biol. Res.
GRØNBÆK,MORTEN; JENSEN,MAJKEN K; JOHANSEN,DITTE; SØRENSEN,THORKILD I A; BECKER,ULRIK.
Studies have suggested that wine drinkers are at lower risk of death than beer or spirit drinkers. The aim of this study is to examine whether the risk of becoming a heavy drinker or developing alcoholic cirrhosis differs among individuals who prefer different types of alcoholic beverages. In a longitudinal setting we found that both the risk of becoming a heavy or excessive drinker (above 14 and 21 drinks per week for women and above 21 and 35 drinks per week for men) and the risk of developing alcoholic cirrhosis depended on the individuals preference of wine, beer or spirits. We conclude that moderate wine drinkers appear to be at lower risk of becoming heavy and excessive drinkers and that this may add to the explanation of the reported...
Tipo: Journal article Palavras-chave: Alcohol; Alcoholic cirrhosis; Beer; Beverage preference; Excessive drinking; Heavy drinking; Spirit; Wine.
Ano: 2004 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602004000200004
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Lead and cadmium content of Brazilian beers Ciênc. Tecnol. Aliment.
Soares,Lucia Maria Valente; Moraes,Adriana Maria Monteiro de.
The elements called heavy metals when ingested are not completely eliminated from animal bodies and are responsible for chronic and acute intoxications. Sixty-three samples of beer, produced in the states of São Paulo, Paraná, Rio de Janeiro, Rio Grande do Sul, Minas Gerais, and Pará, were analysed for lead and cadmium content by atomic absorption spectrometry with graphite furnace atomization and Zeeman correction. The concentrations of Pb and Cd of dark differed significantly from light beers, being higher in the former. No significant difference was found between the beers produced in predominantly rural areas and the ones produced in industrialized areas. The concentrations of lead and cadmium in all samples were bellow the maximum accepted by present...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lead; Cadmium; Beer.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612003000200031
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Ochratoxin A determination in beer by immunoaffinity column clean-up and high-performance liquid chromatography Ciênc. Tecnol. Aliment.
Prado,Guilherme; Oliveira,Marize Silva; Carvalho,Eliana Pinheiro; Lima,Luiz Carlos Oliveira; Veloso,Thais; Souza,Leandro Augusto Ferreira; Cardoso,Ana Cristina Ferreira.
Analyses of ochratoxin A (OTA) in domestic and imported beers were perfomed by immunoaffinity column and high - perfomance liquid chromatography (HPLC) using a fluorescence detector. Recoveries of OTA from beer samples spiked at levels from 8.0 to 800pg/mL ranged from 81.2% to 95.0%, with coefficient of variation between 0% e 11.0%. Detection limit and quantification limit were 2.0pg/mL and 8.0pg/mL, respectively. Of the total of 26 samples produced in Brazil only 6 (23%), contained trace amounts of OTA. Of the 4 imported beers, in 2, Ireland and Germany, were detected OTA at levels of 25pg/mL and 82pg/mL, respectively.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ochratoxin A; Beer; Immunoaffinity; HPLC.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612003000400011
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Socially Optimal Taxation of Alcohol: The Case of Czech Beer AgEcon
Janda, Karel; Mikolasek, Jakub; Netuka, Martin.
The proposed paper belongs to the literature on food demand and optimal taxation and to the literature dealing with economics of alcohol production and consumption. We investigate the question of optimal taxation for the commodity whose consumption has positive and negative features both for individual consumer and for the society. The commodity we analyze is the Czech beer.
Tipo: Conference Paper or Presentation Palavras-chave: Almost Ideal Demand System; Alcohol; Beer; Brewing industry; Consumption; The Czech Republic; Elasticity; Price; Spirits; Tax; Wine.; Agricultural and Food Policy; Consumer/Household Economics; Demand and Price Analysis; Health Economics and Policy; Public Economics; D12; L66; Q18.
Ano: 2010 URL: http://purl.umn.edu/61464
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Using Computational Fluid-Dynamics (CFD) for the evaluation of beer pasteurization: effect of orientation of cans Ciênc. Tecnol. Aliment.
Augusto,Pedro Esteves Duarte; Pinheiro,Talita Ferramola; Cristianini,Marcelo.
In-package pasteurization is the most used method for beer microbiological stabilization. The search for safer and better quality food has created a need to better understand the processes involved in producing it. However, little is known about the temperature and velocity profiles during the thermal processes of liquid foods in commercial packaging, which results in over-dimensioned processes to guarantee safety, decreasing the sensorial and nutritional characteristics of the product and increasing process costs. Simulations using Computational Fluid-Dynamics (CFD) have been used by various authors to evaluate those processes. The objective of the present paper was to evaluate the effect of packaging orientation in the pasteurization of beer in a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mathematic modeling; Computational Fluid-Dynamics (CFD); Thermal treatment; Pasteurization; Processes optimization; Beer.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612010000400022
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WORLD MALT AND MALTING BARLEY: COMPETITION, MARKETING, AND TRADE AgEcon
Satyanarayana, Vidyashankara; Wilson, William W.; Johnson, D. Demcey; Dooley, Frank J..
Recent trends in production marketing, trade, and policies affecting world malting barley and malt sector are examined. A spatial equilibrium model of production and trade is used to assess the effects of alternative levels of supply, demand, and policy variables on composition and direction of malting barley and malt trade flows.
Tipo: Working or Discussion Paper Palavras-chave: Malting barley; Malt; Beer; Trade; Spatial equilibrium; Marketing; International Relations/Trade.
Ano: 1996 URL: http://purl.umn.edu/23444
Registros recuperados: 9
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