Ozonation of Cowpea Grains: Alternative for the Control of Callosobruchus maculatus and Maintenance of Grain Quality

Gustavo Yves Rodrigues Ramos, Gutierres Nelson Silva, Ynayanna Nariza Medeiros Silva, Yago de Medeiros Silva, Izaias Santos Marques, Giovana Lopes da Silva, Marcela Silva Carvalho, Leda Rita D’antonino Faroni, Simone Kelly Rodrigues Lima, Daniel Dias Rufino Arcanjo, Massimo Lucarini, Alessandra Durazzo and Douglas Rafael e Silva Barbosa ()
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Gustavo Yves Rodrigues Ramos: Instituto Federal de Educação, Ciência e Tecnologia do Maranhão, Campus Codó 1, São Luís 65075-441, MA, Brazil
Gutierres Nelson Silva: Instituto Federal de Educação, Ciência e Tecnologia do Mato Grosso do Sul, Campus Nova Andradina, Nova Andradina 79750-000, MS, Brazil
Ynayanna Nariza Medeiros Silva: Agricultural Sciences Center, Universidade Federal do Piauí, Teresina 64049-550, PI, Brazil
Yago de Medeiros Silva: Instituto Federal de Educação, Ciência e Tecnologia do Maranhão, Campus Codó 1, São Luís 65075-441, MA, Brazil
Izaias Santos Marques: Instituto Federal de Educação, Ciência e Tecnologia do Maranhão, Campus Codó 1, São Luís 65075-441, MA, Brazil
Giovana Lopes da Silva: Instituto Federal de Educação, Ciência e Tecnologia do Maranhão, Campus Codó 1, São Luís 65075-441, MA, Brazil
Marcela Silva Carvalho: Instituto Federal de Educação, Ciência e Tecnologia Baiano, Campus Teixeira de Freitas, Teixeira de Freitas 45985-970, BA, Brazil
Leda Rita D’antonino Faroni: Department of Agricultural Engineering, Universidade Federal de Viçosa, Rio Paranaíba 36570-900, MG, Brazil
Simone Kelly Rodrigues Lima: Department of Biophysics and Physiology, Universidade Federal do Piauí, Teresina 64049-550, PI, Brazil
Daniel Dias Rufino Arcanjo: Department of Biophysics and Physiology, Universidade Federal do Piauí, Teresina 64049-550, PI, Brazil
Massimo Lucarini: CREA-Research Centre for Food and Nutrition, 00178 Rome, Italy
Alessandra Durazzo: CREA-Research Centre for Food and Nutrition, 00178 Rome, Italy
Douglas Rafael e Silva Barbosa: Instituto Federal de Educação, Ciência e Tecnologia do Maranhão, Campus Codó 1, São Luís 65075-441, MA, Brazil

Agriculture, 2023, vol. 13, issue 5, 1-12

Abstract: Nowadays, the modified atmosphere with ozone is one of the main alternatives for controlling insect pests in stored grains, as it allows grain quality to be maintained while causing no environmental damage. In light of this, the purpose of this study was to assess the toxicity of ozone to C. maculatus in cowpea grains as well as how it affects the physiological and physical properties of the grains. The toxicity was determined by estimating lethal doses (mg/g) at the top and bottom of the fumigation chamber for 50% and 95% of adult insects (LD 50 and LD 95 ). Cowpea grain samples were removed after being exposed to ozone, and the effect of ozonation on the physical and physiological quality of the grains was assessed. The electrical conductivity, water content, and germination were all examined in this manner. The lethal doses LD 50 were 65.97 and 45.52 mg/g when the insects were distributed at the top and bottom of the fumigation chamber, respectively. As a result, ozone toxicity was higher at the bottom than at the top. The increase in ozone doses resulted in a decrease in water content. The germination rate exceeded 90% in both locations where ozone was applied. The electrical conductivity remained constant, ranging between 152.01 and 239.59 S cm −1 g −1 . The findings indicate that ozone is toxic to C. maculatus but has no effect on grain quality. Ozone may therefore be used to manage C. maculatus in cowpea that has been stored.

Keywords: cowpea; ozonation; alternative control; modified atmosphere; grain quality; cowpea weevil; Callosobruchus maculatus; toxicity (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2023
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