Evaluating different hermetic storage technologies to arrest mold growth, prevent mycotoxin accumulation and preserve germination quality of stored chickpea in Ethiopia

Alemayehu, Samuel; Abay, Fetien; Ayimut, Kiros Meles; Assefa, Dereje; Chala, Alemayehu; Mahroof, Rizana; Harvey, Jagger; Subramanyam, Bhadriraju

doi:10.1016/j.jspr.2019.101526

Cited by 26 publications

(48 citation statements)

References 29 publications

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Section: Introductionmentioning

confidence: 98%

“…The characteristics of the internal atmosphere of a hermetic system prevent the development of fungi, and consequently prevent the accumulation of mycotoxins. Alemayehu et al 38 observed a reduction in mycotoxin accumulation in chickpea stored in hermetic bags. Mycotoxin levels in maize kernels stored in hermetic systems showed little change during 6 months of storage, whereas grains stored in other conventional non-hermetic systems showed a gradual mycotoxins increase over time.…”

Section: Introductionmentioning

confidence: 98%

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Fungal diversity and mycotoxins detected in maize stored in silo‐bags: a review

et al. 2022

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Silo-bags are hermetic storage systems that inhibit fungal growth because of their atmosphere with low humidity, as well as low pH and O 2 concentrations, and a high CO 2 concentration. If a silo-bag with stored maize loses its hermetic nature, it favors the development of fungi and the production of mycotoxins. To the best of our knowledge, this is the first review on the diversity of fungal species and mycotoxins that were reported in maize stored under the environmental conditions provided by silo-bags. The genera Penicillium, Aspergillus and Fusarium were found more frequently, whereas Acremonium spp.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

Fungal diversity and mycotoxins detected in maize stored in silo‐bags: a review

et al. 2022

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“…In Ethiopia, 49% of grain crops, including oilseeds, are stored in traditional storage methods [ 2 ]. Dried commodities stored in such porous woven bags can gain moisture from environments with high relative humidity, allowing for fungal infections and the accumulation of mycotoxins [ 3 , 4 ]. Sesame is a widely cultivated oilseed crop and is the second leading Ethiopian export crop behind coffee [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

“…Many post-harvest loss-mitigation technologies have proven effective [ 3 ], but the adoption of such technologies has been limited in most developing countries, including Ethiopia. Quantitative and qualitative loss of sesame seeds due to storage is a critical issue in Ethiopia, and improved storage technologies are needed to keep both the volume and quality of the seed for consumption, seeds for the next season and increase competitiveness in the export market.…”

Section: Introductionmentioning

confidence: 99%

“…Biological processes such as respiration and metabolic activities lead to the depletion of oxygen and the release of carbon dioxide inside hermetic containers [ 20 ]. Hermetic storage bags have been promoted in the Sub-Saharan region, including Ethiopia, to reduce post-harvest losses of maize, wheat, chickpea, and other vulnerable crops [ 3 , 21 ]. The effectiveness of hermetic bags in minimizing mold growth and accumulation of mycotoxin in stored chickpeas was demonstrated by Alemayehu et al [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Storage Duration and Structures on Sesame Seed Germination, Mold Growth, and Mycotoxin Accumulation

Alemayehu

Abera

Ayimut

et al. 2023

Toxins

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Sesame is an important oil crop for the Ethiopian economy. However, the lack of adequate storage facilities results in significant losses of sesame seeds. This study was designed to compare the effects of storage conditions and the subsequent impact on sesame seed germination, mold growth, and mycotoxin accumulation over the storage period. The efficacy of two hermetic bags (1. Purdue Improved Crop Storage (PICS) bags and 2. Super GrainPro (SGP) bags) was directly compared to sesame storage in polypropylene (PP bags) and Jute bags. Storage conditions (oxygen, carbon dioxide, temperature, moisture content and relative humidity) of samples were analyzed in the laboratory in three replicates. Results showed that the oxygen concentrations dropped to 6.9% (±0.02) in PICS bags and 8.7% (±0.06) in SGP bags at the end of 6 months of storage. In non-hermetic bags Jute and PP), oxygen levels were close to atmospheric levels at 2-, 4-, and 6-month storage periods. In non-hermetic bags throughout storage, the amount of seed infection by mold constantly increased, and seed germination decreased. Sesame seeds stored in hermetic bags had 89.7% (±0.58) to 88.3% (±2.89) germination rates versus 61.67% (±2.08) for non-hermetic storage bags over the 6-month seed storage period. All mycotoxin levels increased over the same storage period, whereas comparative levels were much lower in hermetic bags after six months. Sesame seeds stored in both hermetic bags had the lowest level of tested mycotoxins, and levels among the SGP and PICS bags were not significantly different from one another. This study provides strong evidence indicating that hermetic storage structures such as PICS and SGP significantly affect temperature, humidity, moisture content, CO2 and oxygen levels resulting in the lowering of fungal growth and mycotoxin accumulation and effectively preserving stored sesame without relying on synthetic pesticides in Ethiopia.

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Comparative utility of hermetic and conventional grain storage bags for smallholder farmers: a meta‐analysis

Ngoma,

Monjerezi,

Leslie

et al. 2023

J Sci Food Agric

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Postharvest management is critical to attaining household food, nutrition, and income security. Hermetic grain storage bags offer an effective pesticide‐free way to protect stored grain against fungal and insect infestation. We evaluated articles indexed in the Web of Science that included experiments comparing the storage efficacy of conventional and hermetic storage bags based on grain germination rate, insect infestation, physical damage, mycotoxin contamination, and changes in weight and moisture content. Compared with grain stored in hermetic bags, grain stored in conventional bags lost 3.6‐fold more seed viability, contained 42‐fold more insects, had 11‐fold more physical damage, and lost 23‐fold more grain weight, while grain moisture levels were similar for both hermetic and conventional storage bags. Mycotoxin contamination levels were not as frequently assessed. Levels could be low in grain stored in both types of bags, or levels could be low in hermetic bags and significantly higher in conventional bags. The improved properties of grain stored in hermetic bags can increase food security and household income by providing safe storage options for maintaining seed germinability, and for consumption and/or sale when food supplies are high, or when prices are low. Hermetic bags are economically feasible for use by subsistence farmers in Sub‐Saharan Africa for grain for household consumption and for carrying‐over seed for planting in the next season. Additional studies are needed to verify the mycotoxin contamination results and to determine if there are differences in functional food characteristics, e.g. flavor and cooking properties, that have not been as comprehensively studied. © 2023 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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Evaluating different hermetic storage technologies to arrest mold growth, prevent mycotoxin accumulation and preserve germination quality of stored chickpea in Ethiopia

Cited by 26 publications

References 29 publications

Fungal diversity and mycotoxins detected in maize stored in silo‐bags: a review

Fungal diversity and mycotoxins detected in maize stored in silo‐bags: a review

Effects of Storage Duration and Structures on Sesame Seed Germination, Mold Growth, and Mycotoxin Accumulation

Comparative utility of hermetic and conventional grain storage bags for smallholder farmers: a meta‐analysis

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