An improved hermetic storage bag for the control of boring insects that break the hermetic seal of current bags

2016 ◽  
Author(s):  
Pierre Guillet
Keyword(s):  
Hermetic Storage ◽  
Hermetic Seal

scholarly journals Mortality of insects and quality of maize grains in hermetic and non-hermetic storage

2016 ◽  
Vol 20 (5) ◽  
pp. 487-492 ◽  
Author(s):  
Priscila C. Viebrantz ◽  
Lauri L. Radunz ◽  
Rafael G. Dionello
Keyword(s):  
Storage System ◽  
Alternative Methods ◽  
Modified Atmosphere ◽  
Chemical Methods ◽  
Hermetic Storage ◽  
Insect Mortality ◽  
Polyethylene Bags ◽  
Maize Grain ◽  
Storage Units

ABSTRACT Due to the need to improve the quality and safety of foods, chemical methods used to control grain pests have been replaced by alternative methods. For example, modified atmosphere within the storage units has been used. Therefore, the objective was to evaluate maize grain quality and mortality of insects of the species Sitophilus zeamais and Tribolium castaneum in hermetic and non-hermetic environments for 50 days of storage. The hermetic units consisted of polyethylene "bags" with capacity for 60 kg. A cage with 20 adults of each species and 200 g of maize was placed inside each unit. The oxygen level was quantified every five days. Evaluations of insect mortality and survival occurred at 10, 20, 30, 40 and 50 days of storage. At 0, 30 and 50 days, density, moisture and fungal incidence analyses were conducted. The airtight system is efficient in the control of insects, with satisfactory mortality values for both species. Insects favor the development of fungi during the storage, regardless of the storage system.

Effectiveness of hermetic technologies in limiting aflatoxin B1 and fumonisin B1 contamination of stored maize grain under smallholder conditions in Zimbabwe

2018 ◽  
Vol 11 (3) ◽  
pp. 459-469 ◽  
Author(s):  
T.C. Murashiki ◽  
C. Chidewe ◽  
M.A. Benhura ◽  
L.R. Manema ◽  
B.M. Mvumi ◽  
...  
Keyword(s):  
High Performance ◽  
Fumonisin B1 ◽  
Competitive Elisa ◽  
Hermetic Storage ◽  
Rural Districts ◽  
Limit Of Quantitation ◽  
Significant Difference ◽  
Maize Grain ◽  
Storage Containers ◽  
Aflatoxin B

There is limited empirical evidence on the efficacy of hermetic storage containers in reducing mycotoxin occurrence in stored maize grain under smallholder field conditions. Levels of aflatoxin B1 (AFB1) and fumonisin B1 (FB1) in maize samples collected from hermetic metal silos (148), hermetic grain bags (121) and conventional stores (179) during 2015 and 2016 storage seasons in two rural districts of Zimbabwe were assessed. AFB1 was determined using high performance liquid chromatography with post-column derivatisation and fluorescence detection, whilst FB1 was determined using direct competitive ELISA. All maize samples collected at harvest in 2015 and 2016 seasons contained FB1 at levels ranging from 10 to 462 μg/kg and 13 to 537 μg/kg, respectively. Use of hermetic containers did not seem to have any effect on the development of FB1 in stored maize grain, as there was no significant difference (P>0.05) in the increase of FB1 contamination in hermetic and conventional stores. Prior to storage, the levels of AFB1 in the maize ranged from below the limit of quantitation (LOQ) to 25.0 μg/kg, whilst levels during storage ranged from <LOQ to 8.60 μg/kg in hermetic silos, <LOQ to 8.37 μg/kg in hermetic bags and <LOQ to 791 μg/kg in conventional stores over the two storage seasons. The occurrence of AFB1 in maize stored in hermetic containers, was significantly (P<0.05) lower than that in conventional stores. Hermetic containers were more effective than conventional stores in limiting contamination of maize with AFB1 and subsequent human exposure to these toxins. Therefore, hermetic storage containers are recommended to smallholder maize producers for safe and effective limitation of AFB1 contamination during storage and hence reduce exposure among consumers.

scholarly journals Changes in the Fungal Microbiome of Maize During Hermetic Storage in the United States and Kenya

2018 ◽  
Vol 9 ◽  
Author(s):  
Brett Lane ◽  
Sandeep Sharma ◽  
Chenxing Niu ◽  
Angeline W. Maina ◽  
John M. Wagacha ◽  
...  
Keyword(s):  
United States ◽  
The United States ◽  
Hermetic Storage ◽  
Fungal Microbiome

Wafer Level Micropackaging of MEMS Devices Using Thin Film Anodic Bonding

2002 ◽  
Vol 729 ◽  
Author(s):  
Lauren E. S. Rohwer ◽  
Andrew D. Oliver ◽  
Melissa V. Collins
Keyword(s):  
Shear Strength ◽  
Test Sample ◽  
Anodic Bonding ◽  
Mems Devices ◽  
Wafer Level ◽  
Thermal Actuators ◽  
Wafer Level Packaging ◽  
Hermetic Seal ◽  
Leak Testing ◽  
Before And After

AbstractA wafer level packaging technique that involves anodic bonding of Pyrex wafers to released surface micromachined wafers is demonstrated. Besides providing a hermetic seal, this technique allows full wafer release, provides protection during die separation, and offers the possibility of integration with optoelectronic devices. Anodic bonding was performed under applied voltages up to 1000 V, and temperatures ranging from 280 to 400°C under vacuum (10-4Torr). The quality of the bonded interfaces was evaluated using shear strength testing and leak testing. The shear strength of Pyrex-to-polysilicon and aluminum bonds was ∼10-15 MPa. The functionality of surface micromachined polysilicon devices was tested before and after anodic bonding. 100% of thermal actuators, 94% of torsional ratcheting actuators, and 70% of microengines functioned after bonding. The 70% yield was calculated from a test sample of 25 devices.

scholarly journals Effectiveness of Improved Hermetic Storage Structures Against Maize Storage Insect Pests Sitophilus zeamais and Prostephanus truncatus

2018 ◽  
Vol 10 (8) ◽  
pp. 100
Author(s):  
Tadele Tefera ◽  
Addis Teshome ◽  
Charles Singano
Keyword(s):  
Weight Loss ◽  
Insect Pests ◽  
Sitophilus Zeamais ◽  
Research Station ◽  
Prostephanus Truncatus ◽  
Storage Pests ◽  
Hermetic Storage ◽  
Percentage Weight ◽  
Small Holder Farmers ◽  
Storage Structures

A study was conducted for 12 months to evaluate the effectiveness of two improved hermetic storage structures against two maize storage pests Sitophilus zeamais and Prostephanus truncatus at Liwufu Research Station, Malawi. The storages were metal silo and hermetic bag; Actellic super dust was included as a control. The treatments (storages) were replicated four times under natural and artificial infestations. Grain stored in metal silo had the lowest mean percentage weight loss, 1.04% to 1.25%, 12 months after storage followed by hermetic bag, 2.46% to 6.64%. Grain treated with Actellic super had the highest weight loss, 4.86% to 18.72%. The study showed that hermetic storage structures can be promoted as effective alternative non-chemical methods of grain storage for small holder farmers in Malawi.

Hermetic storage as an alternative for controlling Callosobruchus maculatus (Coleoptera: Chrysomelidae) and preserving the quality of cowpeas

2018 ◽  
Vol 78 ◽  
pp. 27-31 ◽  
Author(s):  
Míria G.C. Silva ◽  
Gutierres N. Silva ◽  
Adalberto H. Sousa ◽  
Romenique S. Freitas ◽  
Maksaíla S.G. Silva ◽  
...  
Keyword(s):  
Callosobruchus Maculatus ◽  
Hermetic Storage

Seed Longevity and Germination Behaviour in Eugenia roxburghii

2021 ◽  
Vol 27 (3) ◽  
pp. 167-171
Author(s):  
Shareef Muhammed ◽  
Chitra Rajeswary ◽  
Anil Chandran
Keyword(s):  
Storage Temperature ◽  
Seed Viability ◽  
Seed Longevity ◽  
Ex Situ ◽  
Hermetic Storage ◽  
Germination Behaviour ◽  
Garden Plant ◽  
Relationship Of ◽  
The Relationship ◽  
And Storage

Eugenia roxburghii is an evergreen graceful shrub with a tremendous potential as garden plant. As a part of ex-situ conservation and popularization of the species, seed longevity was studied by understanding the relationship of seed viability with respect to different moisture contents and storage temperature. Seeds are recognized as recalcitrant, being desiccation as well as chilling sensitive. During hermetic storage, seeds stored at 300C/70%RH retained viability for about 5 months and 4 months in 200C/20% RH. Seeds can be best stored for five months in laboratory conditions.

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