Drying Performance and Aflatoxin Content of Paddy Rice Applying an Inflatable Solar Dryer in Burkina Faso

Romuli, Sebastian; Schock, Steffen; Somda, Marius K.; Müller, Joachim

doi:10.3390/app10103533

Cited by 9 publications

(11 citation statements)

References 26 publications

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“…Drying with ISD should be planned as best as possible to maximise the solar energy and prevent contamination by mycotoxins. Experiments on rice in Burkina Faso also showed that the ISD dried rice had less aflatoxins and impurities compared to conventional sun-dried rice [27]. This slight effect observed for maize in our research was not significant enough to reduce the contamination level of aflatoxins.…”

Section: Discussioncontrasting

confidence: 66%

“…Its application in cereal drying, initially with paddy rice, was promising, but improvements were needed, such as the ability to mix the grains to achieve a homogeneous drying process [25]. The inflatable solar dryer was developed in collaboration with the International Rice Research Institute (IRRI) as an improved version, which is adapted to cereal crops in tropical regions [26,27]. Asemu et al [28] conducted experiments on the use of an inflatable solar dryer to dry maize.…”

Section: Introductionmentioning

confidence: 99%

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Performance Evaluation of an Inflatable Solar Dryer for Maize and the Effect on Product Quality Compared with Direct Sun Drying

et al. 2021

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Maize is an important staple in Africa, which necessitates immediate drying to preserve the postharvest quality. The traditional drying of maize in the open sun is prone to adverse weather and extraneous contamination. In this study, the drying performance of an inflatable solar dryer (ISD) was compared to direct sun drying (DSD) in Gombe Town, Wakiso District (Uganda) by analysing the moisture content, yeasts, moulds, aflatoxin, and colour. The maximum temperature inside the ISD reached 63.7 °C and averaged 7 °C higher than the ambient temperature. Maize was dried using both methods to a moisture content below 14% after two days. In one of the received maize lots that was already heavily contaminated after harvest, drying with DSD and ISD reduced the aflatoxin content from 569.6 µg kg−1 to 345.5 µg kg−1 and 299.2 µg kg−1, respectively. Although the drying performance in terms of drying time and product quality regarding colour, yeast, and mould was similar for both drying methods, the advantage of ISD in reducing the risk of spoilage due to sudden rain is obvious. A strategy for the early detection of aflatoxins in maize is recommended to avoid contaminated maize in the food chain.

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Section: Discussioncontrasting

confidence: 66%

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of an Inflatable Solar Dryer for Maize and the Effect on Product Quality Compared with Direct Sun Drying

et al. 2021

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“…Rice 1000 [71] Drying performance and Aflatoxin content of paddy rice applying an inflatable solar dryer in Burkina Faso…”

Section: Inflatable Solar Dryermentioning

confidence: 99%

A Review on Possible Combination of Solar Dryer Materials for Crops in the Philippines

Oria¹

2022

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Direct sun drying, also known as open sun drying, is the most cost-effective and environmentally beneficial technique of agricultural product preservation, but it degrades crop quality. Solar dryers play an essential part in producing high-quality and hygienic products; however, it is cost and maintenance expensive. Also, it has an inadequate drying performance when off sunshine period, night-time, and especially during different seasons. As a result, this study looks at a variety of low-cost options, high-efficiency materials that have been used in previous studies to give further research, an idea on what would be the ideal combination of cost-effective materials that can be used by small-scale farmers in far-flung areas with off-grid. In addition, this study explores several optimization methodologies, procedures, and processes for efficiently storing energy even when solar radiation is low to further optimize and prolong the solar dryers’ performance.

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“…The ISD design characteristics are: ease of transport and installation; simple operation compared to mechanical dryers; low maintenance since it is made of plastic material. Currently, the ISD has been successfully tested on paddy rice [16,17], amaranth leaves [18], mushrooms [19], and maize [20]. However, information on airflow distribution or heat and mass transfer of the ISD is still lacking.…”

Section: Introductionmentioning

confidence: 99%

CFD-Simulink Modeling of the Inflatable Solar Dryer for Drying Paddy Rice

et al. 2021

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Small-scale farmers in developing Asian countries have minimal agricultural mechanisms available to them. In the Philippines, postharvest losses in rice production can reach about 36% in the drying process alone. Thus, the inflatable solar dryer (ISD) was developed through the collaboration of the University of Hohenheim, the International Rice Research Institute, and GrainPro Philippines Inc. Although the ISD was successfully tested with different agricultural products, further characterization of the ISD design is required for predicting the drying performance. To this end, the airflow behavior in the ISD was simulated using computational fluid dynamics (CFD) via ANSYS Fluent. Moreover, a thermal model was developed in MATLAB/Simulink by taking into account heat transfer in the heating area and coupled heat and mass transfer within the drying area. Three batches of drying experiments were performed and airflow measurements were taken inside the dryer to validate the models. The MATLAB/Simulink model was further used to predict the drying performance under various weather conditions spanning 10 years. The simulated temperatures and moisture content in the ISD showed high accuracy (mean absolute percentage error (MAPE) < 10%) with the experimental data. The proposed dynamic model provides an efficient computational tool that can be applied to predict the drying performance and to optimize the ISD design.

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Drying Performance and Aflatoxin Content of Paddy Rice Applying an Inflatable Solar Dryer in Burkina Faso

Cited by 9 publications

References 26 publications

Performance Evaluation of an Inflatable Solar Dryer for Maize and the Effect on Product Quality Compared with Direct Sun Drying

Performance Evaluation of an Inflatable Solar Dryer for Maize and the Effect on Product Quality Compared with Direct Sun Drying

A Review on Possible Combination of Solar Dryer Materials for Crops in the Philippines

CFD-Simulink Modeling of the Inflatable Solar Dryer for Drying Paddy Rice

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