Quality of soybean cultivars in the drying and storage processes in real scale and experimental

Maldaner

Lutz

et al. 2020

Sci Rep

Drying and storage methods are fundamental for maintaining the grain quality until processing. Therefore, the aim of this study was to evaluate the associations of the drying temperature with storage systems and conditions as a strategy for preserving the quality of maize grain postharvest on laboratory and field scales. An increase in temperature accelerated the reduction in grain moisture, but increased the deterioration. The wetting during the storage period reduced the grain quality. Hermetic and aerated storage systems maintained the chemical quality of the grains. The control with healthy and whole corn dried at 80 °C and stored in silos with natural aeration provided a satisfactory quality, equivalent to those of controlled drying and storage under airtight conditions and at low temperatures. Different conditions of drying and storage of corn on the laboratory and field scales were evaluated, which provides an appropriate management of these operations to maintain the grain quality.

Section: Resultsmentioning

confidence: 99%

Influences of drying temperature and storage conditions for preserving the quality of maize postharvest on laboratory and field scales

Maldaner

Lutz

et al. 2020

Sci Rep

“…Furthermore, the knowledge of the physical properties of the lots of different cultivars favors the regulation of ventilation and cooling equipment to reduce the temperature of the seed mass in storage, minimizing changes in humidity, reducing the respiratory processes of the seeds and hence the consumption of the elements constituting the nutritive reserves of the seeds, in addition to changes linked to metabolic dynamics in the seeds during storage, affecting germination and vigour 7,15,16 .…”

Section: Discussionmentioning

confidence: 99%

“…Physical factors interfering with post-harvest homogenization of seed include water content, which requires reduction for storage conditions to minimize mass respiration processes and stored seed deterioration 6 . Storage conditions associated with seed water content may promote an increase in seed respiratory intensity 6,7 . This causes physical and chemical changes, making seeds inappropriate for sowing.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Multivariate Statistical Analysis Applied to Physical Properties of Soybean Cultivars in The Design and Regulation of Post-Harvest Equipment

Oliveira²,

Teodoro³

et al. 2021

Preprint

The present work had as aim to evaluate the similar of soybean cultivars according to physical properties as a guiding parameter for decision making in the design and regulation of post-harvest equipment using multivariate analysis. First, Pearson's correlation coefficients were estimated. Posteriorly, principal component analysis was performed to verify the interrelationship between variables and soybean cultivars. A biplot was built with the first two principal components. Finally, a boxplot was built for each variable considering the grouping presented by the analysis of main components. By principal component analysis, we identified the formation of two clusters (G1 and G2) of cultivars. Unit specific mass was the physical property that most contributed to the formation of G1, while the other physical properties contributed to the formation of G2. Soybean cultivars comprising the G1 are more similar to each other only for unit specific mass, and the cultivars allocated in group G2 are more similar for all the other properties evaluated. These results are recommended by the equipment manufacturing industry and the seed processing units to carry out projects and equipment adjustments to efficiently manage the post-harvest of soybean seeds.

“…A secagem intermitente é definida pela passagem de ar quente na massa de grãos a alta temperatura, na sequência os grãos são submetidos a um período de descanso-intermitência para que a umidade interna dos grãos migre do centro para a periferia pela diferença de potencial, sem ação direta de calor, utilizando a própria temperatura adquirida pelos grãos quando passou pela câmara de secagem. Entretanto, esse sistema necessita de um alto investimento inicial e de operação, além das chances maiores de ocorrer danos mecânicos nos grãos (Franco e Petrini, 2006, Almeida et al, 2020, Coradi et al, 2020b.…”

Section: Introductionunclassified

Avaliação do sistema operacional de uma unidade armazenadora de silos secadores e a qualidade de grãos de arroz

Nunes

Dutra

et al. 2020

RSD

Self Cite

A garantia da padronização e qualidade dos grãos de arroz se devem às boas práticas de pós-colheita. Assim, o objetivo do trabalho foi avaliar o desempenho operacional e a qualidade de grãos de arroz armazenados em silos secadores. O trabalho foi realizado numa unidade armazenadora composta por cinco silos secadores. Na primeira etapa, foram armazenados grãos de arroz em casca, com diferentes massas e alturas, analisando a movimentação de ar e a temperatura. Na sequência, avaliou-se a movimentação do ar no interior da massa de grãos para diferentes processos de peneiramento. Logo, realizou-se a coleta das amostras de arroz em onze diferentes pontos, para análise física dos grãos. Assim, as variações das alturas e a forma de processamento da massa de grãos influenciaram na pressão estática e no desempenho silos secador, reduzindo a capacidade de trabalho e interferindo na qualidade dos grãos. A eficiência da secagem dos grãos de arroz foi inversamente proporcional ao aumento da pressão estática, evidenciando secagem incompleta nas camadas superiores. A operação de peneiramento contribuiu na redução de impurezas e melhorou a distribuição da pressão estática das camadas de grãos, favorecendo a movimentação do ar. Os lotes de grãos de arroz não repeneirados apresentaram a formação de corredores de passagem de ar, prejudicando a secagem e a qualidade dos grãos. Concluiu-se, para que o sistema silo secador tenha eficiência operacional é fundamental homogeneizar os teores de água dos grãos, eliminar totalmente as impurezas e matérias estranhas através de rotinas de peneiramento.