Pub Date : 2025-02-08DOI: 10.1016/j.jspr.2025.102581
Qiao-yan Wu , Yang Yang , Chun-min Ma, Bing Wang, Xin Bian, Guang Zhang, Xiao-fei Liu, Yan Wang, Na Wu, Zhong Xu, Na Zhang
Rice cakes are popular among consumers for their unique taste and flavor. However, rice cakes aged seriously during storage, which restricted the development of their industry. This study used the gelatinization and thermomechanical properties of rice flour (RF), and the water distribution and texture properties of rice dough as indicators to investigate the effects of different addition amounts (0–10%) of soy protein isolate (SPI) on the quality of rice flour/dough. Also, changes in moisture content, hardness, soluble starch content, thermodynamic properties, and crystal structure of rice cakes during the storage period were used as indicators to investigate their effects on the aging characteristics. The results showed that the addition of SPI increased the water absorption, decreased the paste viscosity of the dough. After 21 days of storage of rice cakes, the addition of 10% SPI increased the water content (20.25%) and soluble starch content (23.28%) of the rice cakes but decreased their hardness, relative crystallinity, and enthalpy of regrowth (ΔH), among them, the ΔH was reduced by 27.81%. This suggested that the addition of SPI inhibited the aging phenomenon of rice cakes during storage. Therefore, this study offered a valuable reference for the anti-aging properties of rice products and their potential applications within the rice food industry, thereby possessing notable practical significance.
{"title":"Impact of soy protein isolate on the aging and quality of rice cakes during storage","authors":"Qiao-yan Wu , Yang Yang , Chun-min Ma, Bing Wang, Xin Bian, Guang Zhang, Xiao-fei Liu, Yan Wang, Na Wu, Zhong Xu, Na Zhang","doi":"10.1016/j.jspr.2025.102581","DOIUrl":"10.1016/j.jspr.2025.102581","url":null,"abstract":"<div><div>Rice cakes are popular among consumers for their unique taste and flavor. However, rice cakes aged seriously during storage, which restricted the development of their industry. This study used the gelatinization and thermomechanical properties of rice flour (RF), and the water distribution and texture properties of rice dough as indicators to investigate the effects of different addition amounts (0–10%) of soy protein isolate (SPI) on the quality of rice flour/dough. Also, changes in moisture content, hardness, soluble starch content, thermodynamic properties, and crystal structure of rice cakes during the storage period were used as indicators to investigate their effects on the aging characteristics. The results showed that the addition of SPI increased the water absorption, decreased the paste viscosity of the dough. After 21 days of storage of rice cakes, the addition of 10% SPI increased the water content (20.25%) and soluble starch content (23.28%) of the rice cakes but decreased their hardness, relative crystallinity, and enthalpy of regrowth (ΔH), among them, the ΔH was reduced by 27.81%. This suggested that the addition of SPI inhibited the aging phenomenon of rice cakes during storage. Therefore, this study offered a valuable reference for the anti-aging properties of rice products and their potential applications within the rice food industry, thereby possessing notable practical significance.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":"111 ","pages":"Article 102581"},"PeriodicalIF":2.7,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143350848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The economic impact of the serious pest Liposcelis bostrychophila has recently increased due to its high fecundity, rapid population growth rates, and extended adult lifespan. Furthermore, this species has developed significant resistance to various insecticides commonly used in global grain storage systems. To devise more effective integrated pest management (IPM) strategies against L. bostrychophila, a thorough understanding of the physiological mechanisms underlying its resistance is essential. In this study, we investigated the species’ tolerance to desiccation, as Liposcelis species are known to be sensitive to dry conditions. We observed that the desiccation tolerance of L. bostrychophila adults varied depending on their prior exposure to dry environments. Adults subjected to initial dry conditions exhibited enhanced tolerance to subsequent desiccation stress, which is designated as dry acclimation. Moreover, adults with increased desiccation tolerance due to prior exposure demonstrated heightened resistance not only to desiccation but also to other stressors, including toxic chemicals (ethanol, β-cyfluthrin, and chlorfenapyr) and extreme temperatures, both low and high. These findings strongly suggest that tolerance to various stressors is not an inherent or fixed trait of the species but rather a dynamic characteristic influenced by prior environmental exposure. Understanding the environmental conditions in which L. bostrychophila develops is therefore crucial for accurately assessing its sensitivities to different stresses.
{"title":"Dry acclimation elevates tolerance to multiple stresses including low/high temperatures and insecticides in Liposcelis bostrychophila","authors":"Kohjiro Tanaka , Masanori Ochiai , Yoichi Hayakawa","doi":"10.1016/j.jspr.2025.102575","DOIUrl":"10.1016/j.jspr.2025.102575","url":null,"abstract":"<div><div>The economic impact of the serious pest <em>Liposcelis bostrychophila</em> has recently increased due to its high fecundity, rapid population growth rates, and extended adult lifespan. Furthermore, this species has developed significant resistance to various insecticides commonly used in global grain storage systems. To devise more effective integrated pest management (IPM) strategies against <em>L. bostrychophila</em>, a thorough understanding of the physiological mechanisms underlying its resistance is essential. In this study, we investigated the species’ tolerance to desiccation, as <em>Liposcelis</em> species are known to be sensitive to dry conditions. We observed that the desiccation tolerance of <em>L. bostrychophila</em> adults varied depending on their prior exposure to dry environments. Adults subjected to initial dry conditions exhibited enhanced tolerance to subsequent desiccation stress, which is designated as dry acclimation. Moreover, adults with increased desiccation tolerance due to prior exposure demonstrated heightened resistance not only to desiccation but also to other stressors, including toxic chemicals (ethanol, β-cyfluthrin, and chlorfenapyr) and extreme temperatures, both low and high. These findings strongly suggest that tolerance to various stressors is not an inherent or fixed trait of the species but rather a dynamic characteristic influenced by prior environmental exposure. Understanding the environmental conditions in which <em>L. bostrychophila</em> develops is therefore crucial for accurately assessing its sensitivities to different stresses.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":"111 ","pages":"Article 102575"},"PeriodicalIF":2.7,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143350885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Post-harvest losses in maize caused by Sitophilus zeamais represent a significant challenge to global grain storage systems. This study investigated the effects of temperature and corn genotype on S. zeamais population dynamics during six months of storage. Eight maize genotypes (Nutricional Embrapa, Cinquentinha, Palha Roxa, Sol da Manhã, Roxo, BR 451 QPM, Catingueira, and Asteca Vermelho) were evaluated under four temperature regimes (15, 20, 25, and 30 °C). Parameters assessed included insect emergence, weight, grain weight loss, and residual weight. Chemical composition (starch, protein, and lipid content) was analyzed to explore potential resistance mechanisms. Temperature significantly influenced S. zeamais development. Low temperatures (15 °C) suppressed insect emergence and grain degradation across all genotypes, while higher temperatures (25–30 °C) amplified pest activity, particularly in susceptible genotypes (Cinquentinha, Palha Roxa). Resistant genotypes (Nutricional Embrapa, Asteca Vermelho) consistently demonstrated reduced insect emergence, weight, and grain losses, likely due to enhanced kernel hardness, biochemical defenses, and nutritional profiles. Lipid and protein content varied significantly among genotypes, influencing pest feeding efficiency and reproduction. Susceptible genotypes showed higher weight loss and residual grain mass, exacerbated by fungal contamination at higher temperatures. The integration of resistant genotypes and temperature management effectively mitigates S. zeamais infestations, preserving grain quality and reducing post-harvest losses. These findings underscore the importance of genotype selection in integrated pest management and highlight the need for further research into the genetic and biochemical traits associated with resistance. Combining resistant genotypes with sustainable storage practices offers a promising strategy for grain preservation in diverse environmental conditions.
{"title":"Influence of temperature and maize genotypes on the population dynamics of Sitophilus zeamais Motschulsky 1885 (COLEOPTERA: CURCULIONIDAE) and grain quality during storage","authors":"Diaine Cortese , Gisele Silva de Oliveira , Marcos Gino Fernandes","doi":"10.1016/j.jspr.2025.102564","DOIUrl":"10.1016/j.jspr.2025.102564","url":null,"abstract":"<div><div>Post-harvest losses in maize caused by <em>Sitophilus zeamais</em> represent a significant challenge to global grain storage systems. This study investigated the effects of temperature and corn genotype on <em>S. zeamais</em> population dynamics during six months of storage. Eight maize genotypes (Nutricional Embrapa, Cinquentinha, Palha Roxa, Sol da Manhã, Roxo, BR 451 QPM, Catingueira, and Asteca Vermelho) were evaluated under four temperature regimes (15, 20, 25, and 30 °C). Parameters assessed included insect emergence, weight, grain weight loss, and residual weight. Chemical composition (starch, protein, and lipid content) was analyzed to explore potential resistance mechanisms. Temperature significantly influenced <em>S. zeamais</em> development. Low temperatures (15 °C) suppressed insect emergence and grain degradation across all genotypes, while higher temperatures (25–30 °C) amplified pest activity, particularly in susceptible genotypes (Cinquentinha, Palha Roxa). Resistant genotypes (Nutricional Embrapa, Asteca Vermelho) consistently demonstrated reduced insect emergence, weight, and grain losses, likely due to enhanced kernel hardness, biochemical defenses, and nutritional profiles. Lipid and protein content varied significantly among genotypes, influencing pest feeding efficiency and reproduction. Susceptible genotypes showed higher weight loss and residual grain mass, exacerbated by fungal contamination at higher temperatures. The integration of resistant genotypes and temperature management effectively mitigates <em>S. zeamais</em> infestations, preserving grain quality and reducing post-harvest losses. These findings underscore the importance of genotype selection in integrated pest management and highlight the need for further research into the genetic and biochemical traits associated with resistance. Combining resistant genotypes with sustainable storage practices offers a promising strategy for grain preservation in diverse environmental conditions.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":"111 ","pages":"Article 102564"},"PeriodicalIF":2.7,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143238271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wheat belongs to the genus Triticum under the Poaceae family and plays a vital role in food and nutritional security. High-quality, vigorous seeds ensure ideal plant populations and better combat early abiotic and biotic challenges. This study evaluated the effects of storage conditions, containers, and packaging materials on the quality of wheat seeds over time. The experiment used a completely randomized design with three factors: temperature (ambient vs. controlled at 22 ± 1 °C), containers (desiccator vs. plastic container), and packaging (cloth, paper, PVC ziplock). Seed quality parameters, including germination, electrical conductivity, lipid peroxidation, and hydrogen peroxide content, were assessed. The results showed that seed quality declined gradually with storage time, but the effects of storage factors varied significantly. After six months, higher germination was observed in controlled temperature with desiccator storage, particularly in cloth (71%) and paper (71%) packaging. No germination was found in ambient conditions with plastic container storage for cloth and paper. Biochemical parameters indicated increased deterioration over time. Controlled temperature storage at 22 ± 1 °C was significantly better for maintaining high seed quality compared to ambient conditions. PCA and cluster analyses proved that desiccator storage was more effective than plastic container, and PVC ziplock packaging also outperformed cloth and paper particularly under ambient conditions. These findings highlight the importance of optimizing storage conditions to preserve wheat seed quality and viability during prolonged storage.
{"title":"Influence of conditions and packaging materials on physiological quality parameters of wheat seeds during storage","authors":"Shereen Shafat , Kuntal Bera , Soham Mukherjee , Bigyananda Mutum , Kajal Mog Chaudhuri , Puspendu Dutta","doi":"10.1016/j.jspr.2025.102566","DOIUrl":"10.1016/j.jspr.2025.102566","url":null,"abstract":"<div><div>Wheat belongs to the genus <em>Triticum</em> under the Poaceae family and plays a vital role in food and nutritional security. High-quality, vigorous seeds ensure ideal plant populations and better combat early abiotic and biotic challenges. This study evaluated the effects of storage conditions, containers, and packaging materials on the quality of wheat seeds over time. The experiment used a completely randomized design with three factors: temperature (ambient vs. controlled at 22 ± 1 °C), containers (desiccator vs. plastic container), and packaging (cloth, paper, PVC ziplock). Seed quality parameters, including germination, electrical conductivity, lipid peroxidation, and hydrogen peroxide content, were assessed. The results showed that seed quality declined gradually with storage time, but the effects of storage factors varied significantly. After six months, higher germination was observed in controlled temperature with desiccator storage, particularly in cloth (71%) and paper (71%) packaging. No germination was found in ambient conditions with plastic container storage for cloth and paper. Biochemical parameters indicated increased deterioration over time. Controlled temperature storage at 22 ± 1 °C was significantly better for maintaining high seed quality compared to ambient conditions. PCA and cluster analyses proved that desiccator storage was more effective than plastic container, and PVC ziplock packaging also outperformed cloth and paper particularly under ambient conditions. These findings highlight the importance of optimizing storage conditions to preserve wheat seed quality and viability during prolonged storage.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":"111 ","pages":"Article 102566"},"PeriodicalIF":2.7,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143104950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-03DOI: 10.1016/j.jspr.2025.102567
Sofia Conde , Filipa Monteiro , Sílvia Catarino , Maria Rosa Ferreira , Sónia Ferreira
Mangrove swamp rice is vital for food security in Guinea-Bissau, yet insect infestations cause significant post-harvest losses worldwide. This study identified insect pests affecting stored rice seeds using both morphological identification and DNA barcoding. In 2022, 64 rice samples were collected from 13 villages across 3 coastal regions yielding 1504 insect specimens, classified into 13 morphotypes from Coleoptera, Lepidoptera, and Hemiptera orders. DNA barcoding confirmed the identity of six species, including global primary rice pests Sitophilus oryzae Hustache, 1930, Rhyzopertha dominica (Fabricius, 1792), and Sitotroga cerealella (Olivier, 1789), and the secondary pests Tribolium castaneum (Herbst, 1797) and Cryptolests pusillus (Schénherr, 1817). This is the first record of these taxa in mangrove swamp rice seeds in West Africa. Four species are reported for the first time to Guinea-Bissau: S. oryzae, C. pusillus, Platymetopus vestitus Dejean, 1829 (Coleoptera), and S. cerealella (Lepidoptera). Among these, R. dominica had the highest relative abundance (68%), while S. oryzae appeared in all regions. Rhyzopertha dominica and S. cerealella were prevalent in Cacheu and Oio. Their widespread presence across Africa suggests a broader distribution. Effective management strategies include hermetic storage, cleaning, biological control, and efficient drying techniques. This study holds significant importance as it presents findings related to the under-researched African rice species (Oryza glaberrima) and a specialized cultivation system: mangrove swamp rice. Findings offer valuable insights into storage practices to enhance food security in rice-producing regions and pave the way for future research on pest management and sustainable rice storage solutions.
{"title":"Uninvited guests: New stored mangrove rice insect pests in Guinea-Bissau","authors":"Sofia Conde , Filipa Monteiro , Sílvia Catarino , Maria Rosa Ferreira , Sónia Ferreira","doi":"10.1016/j.jspr.2025.102567","DOIUrl":"10.1016/j.jspr.2025.102567","url":null,"abstract":"<div><div>Mangrove swamp rice is vital for food security in Guinea-Bissau, yet insect infestations cause significant post-harvest losses worldwide. This study identified insect pests affecting stored rice seeds using both morphological identification and DNA barcoding. In 2022, 64 rice samples were collected from 13 villages across 3 coastal regions yielding 1504 insect specimens, classified into 13 morphotypes from Coleoptera, Lepidoptera, and Hemiptera orders. DNA barcoding confirmed the identity of six species, including global primary rice pests <em>Sitophilus oryzae</em> Hustache, 1930, <em>Rhyzopertha dominica</em> (Fabricius, 1792), and <em>Sitotroga cerealella</em> (Olivier, 1789), and the secondary pests <em>Tribolium castaneum</em> (Herbst, 1797) and <em>Cryptolests pusillus</em> (Schénherr, 1817). This is the first record of these taxa in mangrove swamp rice seeds in West Africa. Four species are reported for the first time to Guinea-Bissau: <em>S. oryzae</em>, <em>C. pusillus</em>, <em>Platymetopus vestitus</em> Dejean, 1829 (Coleoptera), and <em>S. cerealella</em> (Lepidoptera). Among these, <em>R. dominica</em> had the highest relative abundance (68%), while <em>S. oryzae</em> appeared in all regions. R<em>hyzopertha</em> dominica and <em>S. cerealella</em> were prevalent in Cacheu and Oio. Their widespread presence across Africa suggests a broader distribution. Effective management strategies include hermetic storage, cleaning, biological control, and efficient drying techniques. This study holds significant importance as it presents findings related to the under-researched African rice species (<em>Oryza glaberrima</em>) and a specialized cultivation system: mangrove swamp rice. Findings offer valuable insights into storage practices to enhance food security in rice-producing regions and pave the way for future research on pest management and sustainable rice storage solutions.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":"111 ","pages":"Article 102567"},"PeriodicalIF":2.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143104949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/j.jspr.2025.102552
Mbarek Ouabou , Houssam Annaz , Filippo Maggi , Marta Ferrati , Eleonora Spinozzi , Amal El Amrani
This study aims to evaluate the chemical composition and insecticidal and repellent effects of essential oils (EOs) extracted from four underexplored Moroccan plants, i.e., Deverra denudata, Micromeria macrosiphon, Ruta angustifolia, and Thymus riatarum, against the rice weevil Sitophilus oryzae. The chemical composition of the EOs was determined through gas chromatography-mass spectrometry (GC-MS) analysis. Moreover, the insecticidal effect was assessed through fumigant and contact assays, while the repellent effect was evaluated using the area preference assay. Regarding the chemical composition, α-pinene (42.7%) and β-pinene (40.5%) were the major compounds of D. denudata EO, while bornyl acetate (30.2%), borneol (20.4%), and camphor (12.5%) dominated in M. macrosiphon EO. Regarding R. angustifolia EO, 2-undecanone (90.2%) and 2-decanone (7.5%) were identified as the main constituents. Finally, T. riatarum EO was dominated by p-cymene, carvacrol, and borneol in percentages of 26.8, 25.0, and 13.5%, respectively. Regarding the fumigant toxicity, all EOs displayed strong efficacy after 72 h of exposure with LC50 values comprised between 73.9 and 85 μL/L of air, and D. denudata EO appeared to be the most toxic. Regarding the contact toxicity, all EOs exhibited a strong effect, where R. angustifolia EO was the most toxic after 24 h (LC50 of 0.13 μL/insect), and M. macrosiphon after 72 h (LC50 value of 0.08 μL/insect). On the contrary, T. riatarum EO exhibited the highest percentages of repellence (PR of 92%) at the lowest concentration (0.019 μL/cm2) after 30 min, while R. angustifolia EO after 4 h (PR of 90%) at (0.019 μL/cm2). Finally, for the long-term exposure (24 h), T. riatarum exhibited the highest PR of 86 and 94% at 0.019 μL/cm2 and 0.156 μL/cm2, respectively. Overall, our study has reported for the first time the insecticidal and repellent effects of EOs from the four Moroccan plants against the rice weevil S. oryzae, underscoring their potential as efficient bio-insecticides for the management of stored product pests.
{"title":"Chemical profile, insecticidal and repellent activities of four underexplored Moroccan essential oils against Sitophilus oryzae","authors":"Mbarek Ouabou , Houssam Annaz , Filippo Maggi , Marta Ferrati , Eleonora Spinozzi , Amal El Amrani","doi":"10.1016/j.jspr.2025.102552","DOIUrl":"10.1016/j.jspr.2025.102552","url":null,"abstract":"<div><div>This study aims to evaluate the chemical composition and insecticidal and repellent effects of essential oils (EOs) extracted from four underexplored Moroccan plants, i.e., <em>Deverra denudata, Micromeria macrosiphon, Ruta angustifolia,</em> and <em>Thymus riatarum,</em> against the rice weevil <em>Sitophilus oryzae</em>. The chemical composition of the EOs was determined through gas chromatography-mass spectrometry (GC-MS) analysis. Moreover, the insecticidal effect was assessed through fumigant and contact assays, while the repellent effect was evaluated using the area preference assay. Regarding the chemical composition, <em>α</em>-pinene (42.7%) and <em>β</em>-pinene (40.5%) were the major compounds of <em>D. denudata</em> EO, while bornyl acetate (30.2%), borneol (20.4%), and camphor (12.5%) dominated in <em>M. macrosiphon</em> EO. Regarding <em>R. angustifolia</em> EO, 2-undecanone (90.2%) and 2-decanone (7.5%) were identified as the main constituents. Finally, <em>T. riatarum</em> EO was dominated by <em>p</em>-cymene, carvacrol, and borneol in percentages of 26.8, 25.0, and 13.5%, respectively. Regarding the fumigant toxicity, all EOs displayed strong efficacy after 72 h of exposure with LC<sub>50</sub> values comprised between 73.9 and 85 μL/L of air, and <em>D. denudata</em> EO appeared to be the most toxic. Regarding the contact toxicity, all EOs exhibited a strong effect, where <em>R. angustifolia</em> EO was the most toxic after 24 h (LC<sub>50</sub> of 0.13 μL/insect), and <em>M. macrosiphon</em> after 72 h (LC<sub>50</sub> value of 0.08 μL/insect). On the contrary, <em>T. riatarum</em> EO exhibited the highest percentages of repellence (PR of 92%) at the lowest concentration (0.019 μL/cm<sup>2</sup>) after 30 min, while <em>R. angustifolia</em> EO after 4 h (PR of 90%) at (0.019 μL/cm<sup>2</sup>). Finally, for the long-term exposure (24 h), <em>T. riatarum</em> exhibited the highest PR of 86 and 94% at 0.019 μL/cm<sup>2</sup> and 0.156 μL/cm<sup>2</sup>, respectively. Overall, our study has reported for the first time the insecticidal and repellent effects of EOs from the four Moroccan plants against the rice weevil <em>S. oryzae</em>, underscoring their potential as efficient bio-insecticides for the management of stored product pests.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":"111 ","pages":"Article 102552"},"PeriodicalIF":2.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143104948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-31DOI: 10.1016/j.jspr.2025.102571
Aziz Abdulai Adams , Mary Nana Anima Akrofi , Daniel Bruce Sarpong
Maize (Zea mays L.) is crucial to food security in Ghana but is characterized by high postharvest losses (PHLs) resulting from the use of traditional storage structures. As poverty and food insecurity are rampant in northern Ghana, improved storage of maize, a staple food, is vital for boosting household food security. This study analyzed factors influencing farmers’ choice for improved maize storage facilities in the Sissala East District, a vital supplier of maize to neighboring districts in the Upper West Region and Ghana at large, where maize farming is the main source of income for farmers. Twenty-one communities and 132 maize farmers were surveyed. A multi-stage sampling technique was employed: purposive selection of the communities followed by a random selection of maize farmers from each community. Traditional storage facilities are still prevalent, while most farmers use small facilities with a maximum stocking capacity of 50 bags of 100 kg of maize. Many farmers used Corchorus olitorius (jute) sacks, while only five communities had a common warehouse. Regression results show that smallholder farmers with access to extension services were more likely to use improved storage facilities like warehouses, silos, and improved barns and storerooms. Farm characteristics such as farm size and productivity were strong determinants of the choice of an improved storage facility. Also, socio-economic factors such as age of the farmer, number of years in farming (experience), and access to non-farm income sources were associated with the use of improved maize storage facilities. PHLs, as a share of the average output of maize harvested per annum, were higher for farmers using traditional storage than improved storage. Extension services on improved methods of maize storage to boost adoption, improve maize productivity, and increase food availability are recommended. Community warehouses should be constructed. Sensitization on the extent of PHLs should be emphasized.
{"title":"The choice of maize (Zea mays L.) storage facility among farmers in the Sissala East District in northern Ghana: What are the determinants?","authors":"Aziz Abdulai Adams , Mary Nana Anima Akrofi , Daniel Bruce Sarpong","doi":"10.1016/j.jspr.2025.102571","DOIUrl":"10.1016/j.jspr.2025.102571","url":null,"abstract":"<div><div>Maize (<em>Zea mays</em> L.) is crucial to food security in Ghana but is characterized by high postharvest losses (PHLs) resulting from the use of traditional storage structures. As poverty and food insecurity are rampant in northern Ghana, improved storage of maize, a staple food, is vital for boosting household food security. This study analyzed factors influencing farmers’ choice for improved maize storage facilities in the Sissala East District, a vital supplier of maize to neighboring districts in the Upper West Region and Ghana at large, where maize farming is the main source of income for farmers. Twenty-one communities and 132 maize farmers were surveyed. A multi-stage sampling technique was employed: purposive selection of the communities followed by a random selection of maize farmers from each community. Traditional storage facilities are still prevalent, while most farmers use small facilities with a maximum stocking capacity of 50 bags of 100 kg of maize. Many farmers used <em>Corchorus olitorius</em> (jute) sacks, while only five communities had a common warehouse. Regression results show that smallholder farmers with access to extension services were more likely to use improved storage facilities like warehouses, silos, and improved barns and storerooms. Farm characteristics such as farm size and productivity were strong determinants of the choice of an improved storage facility. Also, socio-economic factors such as age of the farmer, number of years in farming (experience), and access to non-farm income sources were associated with the use of improved maize storage facilities. PHLs, as a share of the average output of maize harvested per annum, were higher for farmers using traditional storage than improved storage. Extension services on improved methods of maize storage to boost adoption, improve maize productivity, and increase food availability are recommended. Community warehouses should be constructed. Sensitization on the extent of PHLs should be emphasized.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":"111 ","pages":"Article 102571"},"PeriodicalIF":2.7,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143104947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pesticide residues are available in a broad range of fruits, vegetables, and foods which leave harmful effects on health and environmental sustainability. Most agricultural products exposed to pesticides are marketed shortly after spraying. Palm growers widely use Abamectin and Fenpyroximate to control spider mites. After spraying, some date cultivars such as Barhi date are mostly used as fresh fruit by the consumer without passing the pre-harvest interval (PHI). The efficacy of Gliding Arc Discharge Plasma (GADP) on the degradation of Abamectin and Fenpyroximate pesticides was investigated. The GADP irradiation treatment included 0, 30, 60, 90, and 120s irradiation times applied on the surface of Barhi date fruits sprayed with Abamectin and Fenpyroximate at three different concentrations. The amount of mineral elements, total carbohydrate content, pH, microbial load, Abamectin and Fenpyroximate residue, and optical emission spectroscopy (OES) of plasma were measured. The ANOVA indicated that the impact of the irradiation times was significant on the residue amount of the pesticides in the Khalal stage. The potassium content of Barhi date fruit increased after GADP treatment. Although there were few alterations in the levels of P, Mg, total carbohydrate, and pH. Results show that the microbial load decreased significantly after plasma treatment whilst the lowest microbial load belongs to 120s treatment. Results achieved the largest degradation efficiency of pesticides at 1 ml/L, up to 89.4% and 89.3%, respectively during 120s GADP treatment. Also, the results showed that the degradation efficiency increased with an increase in the treatment time. This study demonstrates effective pesticide degradation in the Barhi date Khalal stage while meeting the Maximum Residue Limit (MRL) criteria. Thus, cold plasma technology presents a promising approach to enhance food safety through effective pesticide degradation on fruit surfaces whilst preserving the fruits' essential mineral content, quality, and extending their shelf life by reducing microbial contamination.
{"title":"Postharvest plasma treatment of Barhi dates: Reducing pesticide residue while preserving nutritional value","authors":"Malihe Omrani , Mohammad Mohammadi , Mojtaba Ghasemi , Hossein Sadeghi","doi":"10.1016/j.jspr.2025.102568","DOIUrl":"10.1016/j.jspr.2025.102568","url":null,"abstract":"<div><div>Pesticide residues are available in a broad range of fruits, vegetables, and foods which leave harmful effects on health and environmental sustainability. Most agricultural products exposed to pesticides are marketed shortly after spraying. Palm growers widely use Abamectin and Fenpyroximate to control spider mites. After spraying, some date cultivars such as Barhi date are mostly used as fresh fruit by the consumer without passing the pre-harvest interval (PHI). The efficacy of Gliding Arc Discharge Plasma (GADP) on the degradation of Abamectin and Fenpyroximate pesticides was investigated. The GADP irradiation treatment included 0, 30, 60, 90, and 120s irradiation times applied on the surface of Barhi date fruits sprayed with Abamectin and Fenpyroximate at three different concentrations. The amount of mineral elements, total carbohydrate content, pH, microbial load, Abamectin and Fenpyroximate residue, and optical emission spectroscopy (OES) of plasma were measured. The ANOVA indicated that the impact of the irradiation times was significant on the residue amount of the pesticides in the Khalal stage. The potassium content of Barhi date fruit increased after GADP treatment. Although there were few alterations in the levels of P, Mg, total carbohydrate, and pH. Results show that the microbial load decreased significantly after plasma treatment whilst the lowest microbial load belongs to 120s treatment. Results achieved the largest degradation efficiency of pesticides at 1 ml/L, up to 89.4% and 89.3%, respectively during 120s GADP treatment. Also, the results showed that the degradation efficiency increased with an increase in the treatment time. This study demonstrates effective pesticide degradation in the Barhi date Khalal stage while meeting the Maximum Residue Limit (MRL) criteria. Thus, cold plasma technology presents a promising approach to enhance food safety through effective pesticide degradation on fruit surfaces whilst preserving the fruits' essential mineral content, quality, and extending their shelf life by reducing microbial contamination.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":"111 ","pages":"Article 102568"},"PeriodicalIF":2.7,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143104946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-29DOI: 10.1016/j.jspr.2025.102549
Yasemin Aş, Zeynep Selvitopi, Gözde Büşra Eroğlu
Densoviruses are small, linear, single-stranded DNA viruses that are 18–28 nm in size and can be filtered. Densoviruses are also known as the ‘black wasting virus' because they cause acute infections in their hosts, causing them to turn black and die. In this study, densoviruses were isolated for the first time from the larvae of the storage pests Tenebrio molitor and Zophobas morio in Türkiye. Although both warehouse pests are consumed as pet food and, in some countries, as human food, they are known to cause respiratory problems such as asthma, anaphylaxis, and separation anxiety. Isolated viruses in this study, named TmDNV-TR and ZmDNV-TR, respectively. Morphological and molecular characterizations of both isolates were performed. Transmission electron microscopy analyses showed that the viruses had a circular inclusion morphology with mean diameters of 22.19 nm (ZmDNV-TR) and 28.95 nm (TmDNV-TR), and TmDNV-TR was significantly larger than ZmDNV-TR. Genomic analysis revealed that the 5467 bp region contained five open reading frames (ORFs) in both viral genomes. The genomic similarity between the isolates was found to be 98.92% and there were amino acid variations, particularly in non-structural 3 (ns3). Interestingly, the phylogenetic tree based on the ZmDNV-TR genome sequence and the results of the Kimura-2 parameter analysis showed a close relationship with a Blattella germenica densovirus. When the genome was digested in silico with restriction enzymes (BsmAI, ApeKI, and BbvI), it was observed that there was an excess of bands in ZmDNV-TR compared to TMDNV-TR for all three enzymes. In this study, for the first time, two different densovirus isolates were obtained from the same insect breeding farm and compared in terms of both structural size and genomics. The spontaneous death of many insects in the breeding farm suggests that this epidemic is vertically transmitted and may be an ideal biological control agent.
{"title":"Two novel densoviruses from storage pests insects (Zophobas morio and Tenebrio molitor) in Türkiye: Genomic and ultrastructural comparison","authors":"Yasemin Aş, Zeynep Selvitopi, Gözde Büşra Eroğlu","doi":"10.1016/j.jspr.2025.102549","DOIUrl":"10.1016/j.jspr.2025.102549","url":null,"abstract":"<div><div>Densoviruses are small, linear, single-stranded DNA viruses that are 18–28 nm in size and can be filtered. Densoviruses are also known as the ‘black wasting virus' because they cause acute infections in their hosts, causing them to turn black and die. In this study, densoviruses were isolated for the first time from the larvae of the storage pests <em>Tenebrio molitor</em> and <em>Zophobas morio</em> in Türkiye. Although both warehouse pests are consumed as pet food and, in some countries, as human food, they are known to cause respiratory problems such as asthma, anaphylaxis, and separation anxiety. Isolated viruses in this study, named TmDNV-TR and ZmDNV-TR, respectively. Morphological and molecular characterizations of both isolates were performed. Transmission electron microscopy analyses showed that the viruses had a circular inclusion morphology with mean diameters of 22.19 nm (ZmDNV-TR) and 28.95 nm (TmDNV-TR), and TmDNV-TR was significantly larger than ZmDNV-TR. Genomic analysis revealed that the 5467 bp region contained five open reading frames (ORFs) in both viral genomes. The genomic similarity between the isolates was found to be 98.92% and there were amino acid variations, particularly in non-structural 3 (<em>ns</em>3). Interestingly, the phylogenetic tree based on the ZmDNV-TR genome sequence and the results of the Kimura-2 parameter analysis showed a close relationship with a Blattella germenica densovirus. When the genome was digested <em>in silico</em> with restriction enzymes (<em>Bsm</em>AI, <em>Ape</em>KI, and <em>Bbv</em>I), it was observed that there was an excess of bands in ZmDNV-TR compared to TMDNV-TR for all three enzymes. In this study, for the first time, two different densovirus isolates were obtained from the same insect breeding farm and compared in terms of both structural size and genomics. The spontaneous death of many insects in the breeding farm suggests that this epidemic is vertically transmitted and may be an ideal biological control agent.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":"111 ","pages":"Article 102549"},"PeriodicalIF":2.7,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143181474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-29DOI: 10.1016/j.jspr.2025.102573
Imane Naimi, Hafida Bouamama, Touria Ba M'hamed
Tribolium castaneum (Herbst) and Rhyzopertha dominica (Fabricius) are two major beetle pests that affect the quality and commercial value of stored products. The aim of this study is to evaluate the insecticidal effect of Juniperus phoenicea and Juniperus oxycedrus, as well as their binary combinations, against adults of T. castaneum and R. dominica. Masses of 1, 1.5, 2, 2.5, and 3 g were used for each plant powder as well as for their binary combination (75% of J. phoenicea powder and 25% of J. oxycedrus). The results obtained revealed that the two powders tested separately revealed a notable effectiveness against T. castaneum and R. dominica. In particular, J. phoenicea is the most toxic against T. castaneum (LD50 = 0.52 g) after 240 h of exposure, and R. dominica (LD50 = 0.60 g) after 192 h of exposure. In combination, the powders showed increased toxicity against T. castaneum (LD50 = 0.55 g) and R. dominica (LD50 = 0.42 g) after 144 h of exposure. The potential of these powders may prove to be an effective and environmentally friendly method of preventing infestations of T. castaneum and R. dominica adults.
{"title":"Individual and combined effects of Juniperus phoenicea and J. oxycedrus powders on insecticidal activity against Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae) and Rhyzopertha dominica (Fabricius) (Coleoptera: Bostrichidae)","authors":"Imane Naimi, Hafida Bouamama, Touria Ba M'hamed","doi":"10.1016/j.jspr.2025.102573","DOIUrl":"10.1016/j.jspr.2025.102573","url":null,"abstract":"<div><div><em>Tribolium castaneum</em> (Herbst) and <em>Rhyzopertha dominica</em> (Fabricius) are two major beetle pests that affect the quality and commercial value of stored products. The aim of this study is to evaluate the insecticidal effect of <em>Juniperus phoenicea</em> and <em>Juniperus oxycedrus</em>, as well as their binary combinations, against adults of <em>T. castaneum</em> and <em>R. dominica</em>. Masses of 1, 1.5, 2, 2.5, and 3 g were used for each plant powder as well as for their binary combination (75% of <em>J. phoenicea</em> powder and 25% of <em>J. oxycedrus</em>). The results obtained revealed that the two powders tested separately revealed a notable effectiveness against <em>T. castaneum</em> and <em>R. dominica</em>. In particular, <em>J. phoenicea</em> is the most toxic against <em>T. castaneum</em> (LD<sub>50</sub> = 0.52 g) after 240 h of exposure, and <em>R. dominica</em> (LD<sub>50</sub> = 0.60 g) after 192 h of exposure. In combination, the powders showed increased toxicity against <em>T. castaneum</em> (LD<sub>50</sub> = 0.55 g) and <em>R. dominica</em> (LD<sub>50</sub> = 0.42 g) after 144 h of exposure. The potential of these powders may prove to be an effective and environmentally friendly method of preventing infestations of <em>T. castaneum</em> and <em>R. dominica</em> adults<em>.</em></div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":"111 ","pages":"Article 102573"},"PeriodicalIF":2.7,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143181472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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