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Modeling energy efficiency during dehydration process of cooked yam CIGR Journal
Akinoso, Rahman; Edun, Kolade.
Studies on drying have focused on developing mathematical models and kinetics of drying crops, but literature is sparse on energy and exergy analysis of cooked yam used for instant-pounded yam flour production.  This work presents the effect of drying temperature and size on energy consumption during cooked yam dehydration, a major unit operation in instant-pounded yam production.  Cooked yam with uniform surface area but different thickness (5 mm, 10 mm, 15 mm,    20 mm, 25 mm and 30 mm) were dried in a cabinet dryer at varying temperatures (60oC, 70oC and 80oC) and constant air velocity of 1.5 m s-1.  During the drying process, parameters including inside chamber temperature, outside chamber temperature, ambient temperature, drying time and power output...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Food Engineering; Agricultural Engineering; Post-Harvest Drying Cooked yam Energy analysis Exergy efficiency Instant-pounded yam flour.
Ano: 2013 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2568
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Effect of osmotic dehydration pretreatments on drying rate and post-drying quality attributes of red bell pepper(capsicum annuum) CIGR Journal
Odewole, Michael Mayokun; Olaniyan, Adesoji Matthew.
Bell pepper (capsicum annuum) is a common vegetable plant and the most popular world-wide and mildest member of capsicum family. It is very easy to cultivate but highly perishable because of its characteristic lower sugar and acidic contents. It lacks built-in protection mechanisms which makes it more vulnerable to deterioration and thus leading to rapid metabolic activities within its cells once harvested. As a result of the aforementioned, it usually experience high postharvest losses in its season and becomes scarce and of low standard at off-season. This work was done to study the factors affecting the drying process of pretreated red bell pepper; and also to investigate the effect of osmotic pretreatments(solution concentration, solution temperature...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioresources Engineering; Food Engineering; Postharvest Technology osmotic dehydration drying rate; Quality red bell pepper (capsicum annuum).
Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2922
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Effect of temperature on viscosity of kokum, karonda, mango pulp and cashew apple syrup CIGR Journal
Swami, Shrikant Baslingappa; Thakor, Nayan Singh; Wagh, Seema S..
The viscosity of the food products (kokum, karonda, mango pulp and cashew apple syrup) was determined at temperatures 20ºC, 30ºC, 40ºC, 50ºC and 60ºC and at different spindle speed such as 0.07, 0.09, 0.1, 1.1 and 17 r min-1 for mango pulp and 17, 140, 150, 160, 180 and 200 r min-1 for kokum, karonda and cashew apple syrup using Brookfield viscometer.  The kokum, karonda, mango pulp and cashew apple syrup showed shear thinning behavior and pseudo-plastic in nature (n
Tipo: Info:eu-repo/semantics/article Palavras-chave: Food Engineering; Food Process Engineering; Food Science; Food Rheology kokum; Karonda; Mango pulp; Cashew apple syrup; Rheology; Viscosity.
Ano: 2013 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2617
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Estimation of drying rate constant from static bed moisture profile by neural network inversion CIGR Journal
Hazarika, Manuj K.; Datta, A. K..
This study aims at extracting a mathematical expression for describing the moisture loss kinetics from grains dried in the form of a static bed, based on a measured grain moisture profile across the bed, and validating its reliability in predicting the drying times.  The target expression for moisture transfer is the Lewis equation with Arrhenius type dependence of the drying rate constant on temperature, thereby reducing the problem to the determination of two coefficients (i.e., Ea and K0) for the drying rate constant.  The scheme of numerical solution of the non-equilibrium model of the deep bed drying process is represented as a trained neural network, with the values of the coefficients as inputs and the sum squared error (SSE) in the prediction of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Food Engineering; Drying; Neural Network Modeling Static bed drying; Non-equilibrium model; Drying rate constant; Bed moisture profile; Neural network inversion; Sum squared error.
Ano: 2014 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2487
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Electrical properties of maize kernels contaminated with aflatoxin CIGR Journal
Muga, Francis Collins; Workneh, Tilahun Seyoum; Marenya, Moses.
The purpose of this study was to investigate the effect of aflatoxin contamination on the dielectric constant of maize kernels. A factorial experiment comprising of three levels of moisture content (13.3, 15.3, and 16.4%), three frequencies (25, 50, and 100 kHz), and nine levels of aflatoxin contamination (0, 1.5, 2.6, 10, 50, 100, 150, 172, and 230 μg/kg) was used. The maize kernels were poured into a custom-built sample holder comprising a shielded parallel plate capacitor. An ISO-TECH LCR-821 meter was used to measure the capacitance, from which the dielectric constant was computed. The results indicated that moisture content and frequency significantly (p ≤ 0.05) affected the dielectric constant. The dielectric constant increased with increase in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Food Engineering; Postharvest technology Aflatoxin; Capacitance; Dielectric constant; Maize kernels.
Ano: 2018 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4582
Registros recuperados: 5
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