Effects of variety, storage container, and duration on the physical properties, oil content, germination capacity, and seed loss due to Plodia interpunctella infestation of Ethiopian sesame

Abstract

BACKGROUNDOwing to fluctuations of international market prices and excess supply during peak harvesting seasons, farmers and traders often suffer from a low market price of sesame. Such a negative impact can be ameliorated by taking advantage of times with a better market price during the off season. This study aimed to investigate the impact of different storage containers on gravimetric properties and germination capacities of five different sesame varieties as well as their impact on Indian meal moth (Plodia interpunctella).RESULTSThere were differences among the types of storage containers in terms of moisture content, oil content, thousand seed weight, and germination capacity with the storage duration. However, in terms of bulk density, true density, and porosity, the results were consistent. On average, a few losses in thousand seed weight for varieties stored in Purdue Improved Crop Storage bags (1.7%), metal silos (2.4%), and GrainPro bags (3.4%) were observed during 12 months’ storage compared with polypropylene bags (17%). The difference among sesame varieties in terms of weight loss and loss of webbing due to P. interpunctella varied with storage duration. On average, about 9.4% weight loss and 5.7% loss due to webbing was measured for seed stored in polypropylene bags due to the natural infestation of P. interpunctella. No pest was found in hermetic containers.CONCLUSIONIn general, to fetch better market prices, the use of hermetic storage is more efficient to maintain the desired gravimetric properties and to prevent losses due to P. interpunctella infestation compared with the commonly used woven polypropylene bags. © 2020 Society of Chemical Industry

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

“…This was consistent with Mendoza et al [ 23 ] and Walker et al [ 24 ], who found that the moisture content of maize increased significantly during conventional storage. However, both PICS and SGP bags maintained sesame seed moisture within the safe storage range of 6-8% throughout the storage period [ 25 ], indicating a lack of exchanges between hermetic bags and the outside environment. These findings are consistent with the findings of various studies that have demonstrated the efficacy of hermetic bags [ 26 , 27 ].…”

“…The other two non-hermetic storage bags, on the other hand, did not significantly contribute to oxygen depletion, and the evolution of carbon dioxide and level were close to atmospheric levels throughout all assessment periods. This could be due to the bags’ lack of hermetic conditions, which likely facilitated gaseous exchange between the outside environment and the inside of the bags during storage [ 24 , 25 , 26 , 27 , 28 ].…”

The Impacts of Climate Change on the Potential Distribution of Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae) in China

“…After the product is infected, the carcasses, excrements, and other secretions of these pests become mixed with it. The product’s germination rate, nutritional value, quality, and safety level will be seriously reduced; thus, P. interpunctella has caused great economic losses in the United States, China, Korea, Ethiopia, and in other countries [ 9 , 10 , 11 , 12 ]. Due to it being a generalist feeder with a heterogeneous diet and high ability to damage food products, this pest has become the focus of the world for a long time.…”

Maillard reaction products and guaiacol as production process and raw material markers for the authentication of sesame oil

“…Sesame is an important food source and oil crop in the world. 1,2 In addition to being widely used in food, about 50% of sesame is used for processing into sesame oil. 3 Sesame oil contains many lignans, vitamin E, plant sterols, and other active substances [4][5][6] with antioxidant properties, [7][8][9] and anti-cancer and anti-aging effects.…”

“…Sesame is an important food source and oil crop in the world 1,2 . In addition to being widely used in food, about 50% of sesame is used for processing into sesame oil 3 .…”