Influência Do Tempo De Secagem Nas Propriedades Físicas De Helianthus Annuus / Influence of Drying Time on the Physical Properties of Sunflower Grains

Rodrigues, Larissa Monique de Sousa; Ferreira, Jamilly Salustiano; Gomes, Josivanda Palmeira; Silva, Semirames do Nascimento; Vieira, Agdylannah Félix; Silva, Luis Paulo Firmino Romão Da; Silva, Aline De Oliveira; Pereira, Marizania Sena

doi:10.34117/bjdv6n10-544

Cited by 3 publications

(1 citation statement)

References 4 publications

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“…Seeds may present physical changes during the drying process due to temperature and humidity gradients, which cause cell expansion, contraction, and changes in density and porosity (ARAUJO et al, 2014;MUNDER;ARGYROPOULOS;MÜLLER, 2017;RODRIGUES et al, 2020). Seeds with high water contents, as those in E1 (57%) and E2 (47%), may show increases in vapor pressure gradient between their interior and the drying air, resulting in high drying rates (OLIVEIRA et al, 2016).…”

Section: Storage Time: Initial (0 Months)mentioning

confidence: 99%

Effect of drying conditions on physiological quality of cowpea seeds of the cultivar brs-tumucumaque

et al. 2023

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Seed drying has many advantages, but it can cause irreversible damages, compromising the physiological quality of seeds, especially when they present high water contents. The objective of this work was to evaluate the effect of drying conditions (inside and outside the pod) on the physiological quality of cowpea seeds of the cultivar BRS-Tumucumaque before and after storage. A completely randomized experimental design with four replications was used, in a split-plot arrangement. The plots consisted of combinations of harvest seasons (1, 2, 3, 4, and 5) and artificial seed drying conditions (inside and outside the pod); and the subplots consisted of storage times (0 and 6 months). The seed water contents were determined and the seeds were evaluated for germination, first germination count, emergence, emergence index, accelerated aging, and electrical conductivity. Higher physiological quality was found for dried seeds inside the pods, which was more evident in seasons 1 and 2, in both storage times. In the other seasons, the drying conditions had no effect on seed germination and vigor at the beginning of storage. The dried seeds inside the pods showed greater vigor after six months of storage. Drying seeds inside the pods favors the maintenance of physiological quality and allows artificial drying of cowpea seeds of the cultivar BRS-Tumucumaque with water content of 47%. Artificial drying of seeds with water contents higher than 32.5% is not recommended for the condition outside the pod. The seed physiological potential decreases after six months of storage, regardless of the drying condition.

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Section: Storage Time: Initial (0 Months)mentioning

confidence: 99%

Effect of drying conditions on physiological quality of cowpea seeds of the cultivar brs-tumucumaque

et al. 2023

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Germinated seeds of three Cucurbita varieties: Physical characteristics, minerals profile, and drying behavior

Moraes

Queiroz

Figueirêdo

et al. 2021

J Food Process Engineering

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The objective of this study was to investigate the physical characteristics and mineral profile of seeds of three Cucurbita varieties, one of the species Cucurbita maxima (variety Crown, one Cucurbita moschata (var. Jacarezinho) and one Cucurbita pepo (var. Italian), in natura and germinated forms. Additionally, perform the drying of the germinated samples at temperatures of 50, 60, and 70°C, evaluating the adjustment by different mathematical models to predict the process, calculate the effective diffusivities, and determine the activation energy and the thermodynamic properties of the samples. The seeds were germinated until 96 hr. Then, the unit mass, apparent specific mass, real specific mass, porosity and unit volume, and the mineral profile were determined. The germinated seeds were crushed and placed to dry with a thickness of 0.5 cm until reaching the equilibrium water content. Germination resulted in an increase in unit mass, unit volume, real density, and porosity; reducing the apparent density. The minerals were presented in different proportions, with emphasis on the calcium content in the Crown variety, potassium and phosphorus in Italian variety, and magnesium in Jacarezinho variety. The Henderson and Pabis modified model was the one that best fitted the experimental data of the three varieties. The effective diffusivities of the germinated seeds increased with increasing drying temperatures. The activation‐energy value was higher in the Crown variety, followed by Jacarezinho and Italian. The greatest enthalpies and entropies were determined in the Crown variety and the highest Gibbs free energies in the Italian variety. Practical Applications The knowledge of the physical aspects, the minerals concentration, and the use of drying germinated pumpkin seeds results in products with good palatability, expanding the possibilities for industrial and commercial use. The drying of agricultural products in a convective dryer makes it possible to reduce the water content to a certain value, minimizing microbiological activity and reducing chemical deterioration reactions, essential to increase shelf life, control waste, and allow the use and consumption of a product with high quality on a large scale. The contribution to the area consists of determining important values for seed processing industries interested in greater energy efficiency and in the precise adaptation of processes and equipment, with a view to reducing costs and maximizing the quality of the final product.

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Physical properties of grains of cowpea genotypes

Silva

Carvalho

Siqueira

et al. 2023

Rev. bras. eng. agríc. ambient.

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The present study aimed to evaluate the physical properties of cowpea genotypes grains. The study was conducted at the Laboratory for Storage and Processing of Grains and Seeds at the North Federal Institute of Minas Gerais (IFNMG) in Januária, MG, Brazil. The treatments were composed of 17 elite lines and 11 cultivars of cowpea. The experimental design was in randomized blocks with four replicates. The properties evaluated were bulk density, angle of repose, 1000-grain weight, shape (sphericity and circularity), size (projected area) of the grains, water content, and porosity of the grain mass. The genotypes give different sizes to cowpea beans, which influences the variation of bulk density, angle of repose, and 1000-grain weight. There was no statistical difference among the cowpea genotypes evaluated for water content and mass porosity.

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Influência Do Tempo De Secagem Nas Propriedades Físicas De Helianthus Annuus / Influence of Drying Time on the Physical Properties of Sunflower Grains

Cited by 3 publications

References 4 publications

Effect of drying conditions on physiological quality of cowpea seeds of the cultivar brs-tumucumaque

Effect of drying conditions on physiological quality of cowpea seeds of the cultivar brs-tumucumaque

Germinated seeds of three Cucurbita varieties: Physical characteristics, minerals profile, and drying behavior

Physical properties of grains of cowpea genotypes

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