scholarly journals Quality and Drying Kinetics of Moringa (Moringa oleifera Lam.) Seed Flour After Drying Process

2020 ◽  
Vol 8 (2) ◽  
pp. 380
Author(s):  
Francisco Marto De Souza ◽  
Emmanuel Moreira Pereira ◽  
Jackson Silva Nóbrega ◽  
Rosilene Agra Da Silva ◽  
Adriana Da Silva Santos ◽  
...  
Keyword(s):  
Nutritional Value ◽  
Drying Process ◽  
Constant Weight ◽  
Seed Flour ◽  
Peleg Model ◽  
Different Temperatures ◽  
Kinetics Of ◽  
Best Fit ◽  
Moringa Oleifera Lam

The moringa presents great nutritional value thanks to its bioactive compounds, providing many benefits to human health. Therefore, this plant has been studied with the aim of being used as a food fortifier. The objective of this work was to describe the technological process in the production of moringa seed flour at different temperatures through numerical and analytical solutions and assess its final chemical quality. Moringa pods were obtained in experimental area and were treated by removing their seeds. A drying process was performed at different temperatures (40, 50, 60 °C) with progressive weighing on a semi-analytical scale until constant weight which was obtained after 2 hours of drying. The flour was obtained with the use of a knife mill. Empirical models of Lewis, Herdenson and Pabis, Peleg and Page were used to describe the dehydration curve of moringa seeds. Protein, lipid, carbohydrate, ash and moisture contents were determined in the flours obtained at different temperatures. We verified that best fit model was Page’s, representing the best coefficients of determination and chi-squares. The Peleg model showed incoherent behavior, indicating that it is not ideal for simulating the drying process of moringa seeds at the studied temperatures. The temperature influenced the quality of the flour. The flour obtained at a temperature of 40 °C showed the best percentages of protein, ash, moisture and carbohydrates. For the lipid content, the best flour results was obtained at temperatures of 50 and 60 °C.

scholarly journals Drying kinetics of baru flours as function of temperature

2018 ◽  
Vol 22 (10) ◽  
pp. 713-719 ◽  
Author(s):  
Douglas R. Reis ◽  
Fabrício B. Brum ◽  
Eduardo J. O. Soares ◽  
Jessiana R. Magalhães ◽  
Fabrício S. Silva ◽  
...  
Keyword(s):  
Experimental Data ◽  
Activation Energy ◽  
Food Industry ◽  
Nutritional Value ◽  
Effective Diffusivity ◽  
Drying Kinetics ◽  
Statistical Parameters ◽  
Noticeable Effect ◽  
Different Temperatures ◽  
Kinetics Of

ABSTRACT Several types of seeds have been initially used in the food industry due to the great potential that vegetable proteins have. Baru is a fruit commonly found in the Cerrado biome, having a high nutritional value. This paper aimed to determine and analyze the drying kinetics of whole and defatted baru almond flours at different temperatures. The flour resulting from almond milling was defatted using petroleum ether. The drying processes were performed at temperatures of 40, 50 and 60 ºC. The mathematical models of Page, Henderson and Pabis, Midilli & Kucuk, Thompson and Approximation of Diffusion were fitted to the experimental data. The results showed a noticeable effect of air temperature on the drying kinetics of whole and defatted baru almond flours. According to the statistical parameters of analysis, the models Midilli & Kucuk and Page were the ones with the best fits to the experimental data. The effective diffusivity values found ranged from 8.02 × 10–10 to 19.90 × 10–10 m2 s-1 and for the activation energy were 22.39 and 39.37 KJ mol-1 for whole and defatted almonds, respectively.

scholarly journals Drying kinetics and microbiological quality of green onions

Revista CERES ◽  
2016 ◽  
Vol 63 (6) ◽  
pp. 769-774
Author(s):  
Ana Paula Martinazzo ◽  
Luiz Carlos Correa Filho ◽  
Carlos Eduardo de Souza Teodoro ◽  
Pedro Amorim Berbert
Keyword(s):  
Mathematical Modeling ◽  
Microbiological Quality ◽  
Agricultural Products ◽  
Allium Fistulosum ◽  
Drying Process ◽  
Excess Production ◽  
High Yields ◽  
Page Equation ◽  
Best Fit

ABSTRACT Green onion (Allium fistulosum L.) is widely consumed and traded in Brazil as condiment. Because of the high yields in the region of Volta Redonda - RJ and the alternative of drying as a method for preserving the excess production, the objective of this study was to evaluate the drying process of green onions, considering the microbiological quality, and to develop the mathematical modeling of this process. Mathematical models to describe the drying of agricultural products were used to predict the phenomenon. The modified Page equation gave the best fit to the data. Microbiological quality was evaluated using the analysis of aerobic mesophilic bacteria, molds and yeasts. Dehydration at 60 ºC was the most indicated for green onions, with assured microbiological quality.

Organoleptic and Nutritional Evaluation of Value Added Noodles from Amaranth Seed Flour

2020 ◽  
pp. 39-47
Author(s):  
Priyanshu Tripathi ◽  
Renu Mogra
Keyword(s):  
Nutritional Value ◽  
Nutritive Value ◽  
Value Added ◽  
Protein Product ◽  
Overall Acceptability ◽  
Seed Flour ◽  
Amaranth Grain ◽  
Amaranth Seed ◽  
Amaranth Flour

Pseudocereals are as good as the true cereals in many aspects of nutritional value. Either substituting or supplementing the staple cereals with pseudocereals and thereby improving the nutritive value of foods are under experimentation. Amaranth, a pseudocereal possess the usual characteristics of cereals such as bland taste, ease of cooking and also contain a substantial quality of cooking and fat as compared to most cereals.  Amaranth contain good amount of fiber, energy and mineral than the conventional grains. Nevertheless, amaranth grain is still considered as a underutilized food crop and its consumed very few places. The usage of amaranth green, though very common in many parts of India. Development of nutritionally superior inexpensive food and acceptable to intended consumer is the biggest challenge of the present time. The present investigation was designed to develop high protein product by incorporation of amaranth flour. Amaranth flour was incorporate in the ratio of 20, 30, 40, 50, 60 and 70 per cent in the wheat flour. The higher score of overall acceptability was 7.70± 0.10 for 50 per cent substitution of amaranth flour after control and the minimum as 6.67± 0.25 for the 70 per cent amaranth flour noodles. Considering the results obtained and characteristics of flour used, the amaranth flour addition up to 30 per cent is evident to improve some nutritional properties and 50 per cent for sensory characteristic. Results also showed significant increase (P<0.05) in the protein (13.22 g) when compared with control (12.07 g). In this research it was analyzed that the different amount of amaranth flour plays an important role in noodles making by enhancing nutritional parameters and overall product quality. Resultant noodles can be used as a nutritious food with higher content of protein and other nutritious elements in an increased market of noodle product where quality protein is an issue.

scholarly journals DRYING KINETICS OF PEELED COFFEE SUBMITTED TO DIFFERENT TEMPERATURES AND RELATIVE HUMIDITY OF THE AIR OF DRYING AFTER PARTIAL DRYING

2020 ◽  
Vol 28 ◽  
pp. 460-476
Author(s):  
Rodrigo Victor Moreira ◽  
Jefferson Luiz Gomes Correa ◽  
Ednilton Tavares de Andrade ◽  
Roney Alves da Rocha
Keyword(s):  
Relative Humidity ◽  
Effective Diffusivity ◽  
Drying Kinetics ◽  
Dew Point ◽  
Diffusivity Coefficient ◽  
Point Temperature ◽  
Dew Point Temperature ◽  
Different Temperatures ◽  
Kinetics Of

The mathematical modelling is fundamental for the understanding of the related processes the drying, that influences the quality of the coffee drink. The objective of this study was to evaluate the influence of different relative humidity of the drying air after partial drying on drying kinetics of peeled coffees. Coffee fruits were harvested in the cherry stage and processed by wet, resulting in the portion of peeled coffee. Eleven treatments of drying were accomplished, being nine results of the combination of three dry bulb temperatures and three dew point temperatures, more two treatments without the control of the dew point temperatures. The control of the relative humidity by the dew point temperature was made after the grains reached the partial drying. Among the studied models, those of Diffusion Approximation and Modified Midilli were the most adequate for describing the drying process of the first and second part of drying respectively. The effective diffusivity coefficient of water in coffee grains ranged from 0.81 x 10-11 to 1.84 x 10-11 m² .s-1 during the first part of the drying and ranged from 1.49 x 10-11 to 3.29 x 10-11 m² .s-1 during the second part of the drying, increasing significantly with the reduction of the dew point temperature and increase of the dry bulb temperature.

scholarly journals IINFLUENCE OF MAIN TECHNOLOGICAL PARAMETERS OF DRYING ON QUALITY OF BAGASSE FROM CARROT AND BEET

2018 ◽  
Vol 5 ◽  
pp. 62-70
Author(s):  
Aziz Sardarov ◽  
Olga Mayak ◽  
Andrey Shevchenko ◽  
Svitlana Prasol ◽  
Gennadiy Shershnev
Keyword(s):  
Wide Spectrum ◽  
Chemical Properties ◽  
Quality Parameters ◽  
Drying Process ◽  
Technological Parameters ◽  
Process Duration ◽  
Healthy Nutrition ◽  
Kinetics Of ◽  
Food Value

The work studies the drying process of vegetable bagasse, namely of carrot and beet. There is studied the moisture content kinetics of vegetable bagasse and determined the dependence of the process duration on main technological parameters in the work of a vibration vacuum dryer, namely, an amplitude and frequency. There were studied quality parameters of obtained concentrated products, namely the colorimetric estimation of dried bagasse of carrot and beet. Based on obtained results of the study, it was established, that the use of vibration in the process of drying bagasse favors conservation and formation of colorimetric characteristics of a dried product. Determined color characteristics gave a possibility to establish, that at thermal processing it is very important to decrease the drying process duration and temperature. Research data proved prospects of producing concentrated products, namely, dried bagasse of carrot and beet by the offered method. It allows to regulate quality parameters of a ready product: color, brightness, consistence, viscosity and physical-chemical properties. Obtained concentrated products are characterized with high organoleptic indices, food value. This product may be used in the wide spectrum of food industry, such as, for example: juice supplement, stuff for confectionary mass, filling for confectionary products, as biological supplement for healthy nutrition.

scholarly journals Drying kinetics and quality of tray dried peanut milk residue

Food Research ◽  
2021 ◽  
Vol 5 (2) ◽  
pp. 106-112
Author(s):  
B. Sanika ◽  
P. Poojitha ◽  
P. Gurumorrthi ◽  
K.A. Athmaselvi
Keyword(s):  
Water Solubility ◽  
Chemical Properties ◽  
Quality Parameters ◽  
Absorption Capacity ◽  
Drying Kinetics ◽  
Different Temperatures ◽  
Sensory Analyses ◽  
Physical And Chemical ◽  
Best Fit

The research was aimed to prepare muffins using groundnut milk residue. Groundnut or Peanut (Arachis hypogaea) is one of the most consumed legumes in the world. Groundnut is also a prominent source of plant-based milk. The groundnut milk was prepared by the conventional method with 1:2 ratio of water. The residue was tray-dried at different temperatures (60, 70, 80°C) to study the drying kinetics. Physical and chemical properties of optimized groundnut milk residue powder were analysed. Muffins were developed using milk residue. Quality parameters and sensory analyses were also done for the product obtained from milk residue. The results indicated that groundnut milk residue dried at 70ºC had less water absorption capacity and more water solubility index. Also, the powder retained colour when dried at 70°C. The experimental data were fitted to five mathematical models. Wang and Singh's model was found to have the best fit with R2 value of 0.9932. The increase in temperature promotes drying at a faster rate.

scholarly journals Effect of blanching methods on drying kinetics of bell pepper

2011 ◽  
Vol 11 (48) ◽  
pp. 5457-5474
Author(s):  
Toyosi Tunde - Akintunde ◽  
◽  
BO Akintunde ◽  
A Fagbeja ◽  
◽  
...  
Keyword(s):  
Palm Oil ◽  
Water Movement ◽  
Drying Kinetics ◽  
Bell Pepper ◽  
Drying Rate ◽  
Drying Process ◽  
Oil Water ◽  
Drying Rates ◽  
Kinetics Of

Various blanching methods and drying temperatures were applied to bell pepper (Capiscum annum) to investigate the effect on its drying characteristics. Pepper (Capiscum annum) is an abundant and cheap source of vitamins, minerals and fibre. However, its high moisture content makes it susceptible to deterioration. The most common method of preservation is drying but the dried products obtained are of reduced nutritional qualities. Pretreatment of pepper before drying improves the quality of the dried pepper and increases its drying rate. Steam and water blanching as a form of pretreatment has been reported to increase drying rate and improve the quality of dried products but there is not much information on other types of oil/water blanching methods. The effect of blanching (steam, water, palm oil/water and groundnut oil/water) as a pretreatment on the drying kinetics of bell pepper dried at temperatures of 50, 60, 70, 80 and 90o C, was studied. Drying of raw untreated bell pepper was taken as a control. The results indicate that water removal at the initial stage of the drying process was highest and there was a rapid decrease as drying continued until equilibrium was reached at the end of process. The blanched samples generally had higher drying rates (at p<0.05) than the untreated samples. The values for the drying rate for steam and water blanched samples were higher (but not at p<0.05) than the drying rates for samples blanched in oil/water mixtures. The drying rate as well as effective moisture diffusivity, Deff, increased with increasing drying temperature. Values of Deff varied from 3.55 x 10-9 m 2/s to 2.34 x 10-9 m 2/s with the highest being SB (steam blanched) at 80oC and the lowest UB (unblanched) at 50oC. The drying process took place mainly in the falling rate period. The activation energies varied from 39.59 to 83.87 kJ/mol, with PB (palm oil/water blanched) samples having the lowest and UB having the highest Ea value. The lower values for pretreated samples imply that water movement from the internal regions is faster in pretreated samples. This suggests that blanching as a method of pretreatment generally increases water diffusion.

scholarly journals Novel practice to produce safe and healthy dry fish using irradiated chitosan coating

Food Research ◽  
2021 ◽  
Vol 5 (2) ◽  
pp. 240-247
Author(s):  
M.L. Rahman ◽  
R. Barua ◽  
A.A. Jubayer ◽  
J.M.M. Islam ◽  
A.H.M. Kamal ◽  
...  
Keyword(s):  
Gamma Radiation ◽  
Human Health ◽  
Nutritional Value ◽  
Microbial Contamination ◽  
Cost Effective ◽  
Chitosan Solution ◽  
Drying Process ◽  
Open Environment ◽  
Chitosan Coating

In Bangladesh, dry fishes are mostly produced by drying in an open environment under sunlight, and so the producers are forced to use insecticides and fungicides to prevent microbial and blowfly infestation. That is why dry fishes are often contaminated with residual insecticides and fungicides, which cause a severe threat to human health. In this experiment, gamma radiation treated chitosan solution was used while drying the fishes, and the effect was evaluated. Experimental results suggested that chitosan coating did not hinder the drying process but improved the quality of the produces. Chitosan coating was found as a repellant of blowflies as well. Besides, it also prevented microbial contamination. The nutritional value of the produced dry fishes was examined and found very satisfactory. Overall results suggested that the application of irradiated chitosan can be a very suitable and cost-effective way to produce safe and healthy dry fishes.

scholarly journals RESEARCH OF PLUM DRYING PROCESS

2015 ◽  
Vol 3 ◽  
pp. 494-5 ◽  
Author(s):  
Nurlan Kurmanov ◽  
Azret Shingissov ◽  
Gulzhan Kantureyeva ◽  
Zeinep Nurseitova ◽  
Baurzhan Tolysbaev ◽  
...  
Keyword(s):  
Acid Content ◽  
Ascorbic Acid Content ◽  
Drying Method ◽  
Drying Process ◽  
Air Velocity ◽  
Hot Air ◽  
Sensory Parameters ◽  
Air Dryer ◽  
Kinetics Of

In this study, the drying kinetics of a domestic plum cultivar were examined in a laboratory scale hot-air dryer, SHS-80, at an air velocity of 0.65m s-1 and within the air temperature range of 45 – 75 0С. It was found that the whole fruit dried the best. Also, the study  assessed the influence of the drying method on the quality of the domestic plum cultivar. Dried fruits were assessed for sensory parameters and ascorbic acid content. Studies have shown thatthe proposed method of drying, yields a higher absorbic acid content for the dried product  than the conventional approach.

Diffusion of Water in Chestnut Fruits during Drying and Rehydration Processes at Different Temperatures

2008 ◽  
Vol 273-276 ◽  
pp. 758-763
Author(s):  
Ramón Moreira ◽  
Francisco Chenlo ◽  
L. Chaguri ◽  
Christiana Fernandes
Keyword(s):  
Moisture Content ◽  
Initial Moisture Content ◽  
Convective Drying ◽  
Transfer Processes ◽  
Hot Air ◽  
Mass Transfer Processes ◽  
Different Temperatures ◽  
Diffusional Model ◽  
Kinetics Of

Many food materials must be dried in order to decrease its water activity and to increase the shelf-life. Also, rehydration operation must be carried out as previous step before consumption. Both operations are commonly employed in some industrial chestnut processing. These processes can be carried out at different temperatures and in all cases the quality of the final product can be affected. In this work, convective drying with hot air is the employed method for water removal and rehydration is carried out by immersion of chestnut in water. In both cases, mass transfer processes are governed by water diffusion in the bulk of the solid. The aim of this work is to determine experimentally the drying and rehydration kinetics of chestnut samples at different conditions of temperature and moisture content. Obtained data are modeled with a diffusional model taking into account volume variations and the corresponding values of the coefficients of diffusion of water are obtained. Analysis of the results indicates that drying/rehydration rates increase with temperature and rehydration kinetics are also depending on the initial moisture content of chestnut. Finally, leaching flow during rehydration is only important at high temperature due to starch gelatinization processes.

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