Airtight Storage of Wheat in a P.V.C. Covered Bunker

Navarro, S.; Donahaye, E.; Kashanchi, Y.; Pisarev, V. E.; Bulbul, O.

doi:10.1016/b978-0-444-42417-4.50059-1

Cited by 12 publications

(11 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At the end of long-term hermetic storage, when unloaded grain is destined for immediate consumption, the risk of spreading insect infestation was found to be negligible. Insect control success due to the hermetic storage treatments is comparable to conventional fumigants (over 99.9 % kill), and losses due to insect activity and fungal damage are minimal (0.12 % loss in weight per year) (Navarro et al 1984;Varnava 2002). …”

Section: Biogeneration Of Masmentioning

confidence: 98%

“…8. Hermetic storage of wheat, stored at or below its critical moisture content of 12.5 %, provides storage without significant degradation of quality, including maintenance of baking qualities, for up to 2 years (Navarro et al 1984. In Cyprus, such bunkers allowed quality preservation of barley for 3 years, with total losses of 0.66-0.98 %, and with germination remaining above 88 % (Varnava and Muskos 1997).…”

Section: Hermetic Storage Of Wheat and Barleymentioning

confidence: 98%

“…7 Application of CO 2 based CA on a 5,000 tonnes concrete horizontal silo bin and the CO 2 gas supply from the tank in Mianyang, Sichuan, China Fig. 8 Bunker storage for conservation of large bulks of 10,000-15,000 tonnes capacity (Navarro et al 1984 • Recently, a hermetic liner for 20 0 and 40 0 shipping containers called TranSafeliner TM has become available ( Fig. 13) (GrainPro 2008).…”

Section: Flexible Structuresmentioning

confidence: 99%

“…• Bunker storage for conservation of large bulks of 10,000 to 15,000 tonnes capacity (Navarro et al 1984;1993) (Fig. 8).…”

Section: Flexible Structuresmentioning

confidence: 99%

See 3 more Smart Citations

The use of modified and controlled atmospheres for the disinfestation of stored products

Navarro¹

2012

J Pest Sci

112

View full text Add to dashboard Cite

Storage insects are aerobic organisms requiring oxygen for their survival. Therefore, they respond to altered atmospheric gas compositions containing low O 2 or high CO 2 . The lower the grain moisture content (m.c.) and the corresponding intergranular humidity, the higher the mortality-due to the desiccation effect on insects caused by low O 2 or elevated CO 2 concentrations. To achieve insect control, the temperature of the grain should be above 21°C. Hermetic storage is based on the principle of generation of an oxygen-depleted, carbon dioxide-enriched interstitial atmosphere caused by the respiration of the living organisms in the ecological system of a sealed storage. A sufficiently low oxygen and elevated CO 2 atmosphere is created through a natural metabolic process based on insect respiration and, in cases where the commodity has sufficiently high moisture, the respiration of the microorganisms within a sealed storage system. An O 2 ingress rate of 0.05 %/day is sufficient to arrest the theoretical weight loss at a level of 0.018 % over 1-year storage period. At this ingress rate, the possibility of a residual surviving insect population is eliminated. This low O 2 ingress level could serve as a guideline for the sealing specifications of structures appropriate to the hermetic storage method. The applications for which hermetic technology has been most widely accepted are (a) for longterm storage of cereal grains, primarily rice, corn, barley, and wheat; (b) for long-term storage of a variety of seeds to preserve germination potential and vigor, and (c) for quality preservation of high-value commodities, such as dried fruits.

show abstract

Section: Biogeneration Of Masmentioning

confidence: 98%

Section: Hermetic Storage Of Wheat and Barleymentioning

confidence: 98%

Section: Flexible Structuresmentioning

confidence: 99%

“…• Bunker storage for conservation of large bulks of 10,000 to 15,000 tonnes capacity (Navarro et al 1984;1993) (Fig. 8).…”

Section: Flexible Structuresmentioning

confidence: 99%

See 2 more Smart Citations

The use of modified and controlled atmospheres for the disinfestation of stored products

Navarro¹

2012

J Pest Sci

112

View full text Add to dashboard Cite

show abstract

“…Hermetic storage is a type of modified atmosphere (MA) that has now been applied for the protection of stored agricultural commodities including cocoa beans, coffee, rice, corn, pulses and seeds (Navarro et al, 1984;1993;1995;Varnava and Mouskos, 1997;Navarro, 2006;Sabio et al, 2006). It is also called "sealed storage" or "air-tight storage" or "sacrificial sealed storage" or "hermetic silo storage".…”

Section: Introductionmentioning

confidence: 99%

Hermetic storage: A novel approach to the protection of cocoa beans

Jonfia-Essien¹,

Navarro²,

Villers³

2011

African Crop Science Journal

View full text Add to dashboard Cite

Hermetic storage has provided a successful storage method for protection of commodities without fumigants or need for refrigeration for insect control and quality preservation of stored products. Hermetic storage is achieved in specially constructed plastic structures for the preservation of cereal grains and other commodities. Plastic structures suitable for long-term storage systems, as well as intermediate storage of grain have been developed and applied. These storage systems based on the hermetic principle were designed for (1) storage at the farmercooperative and small trader level with 10 -1000 tonnes capacity for enclosing stacks termed Cocoons™, (2) small scale storage suitable for small portable containers of 60 kg to 2 tonnes called SuperGrainbags™ and (3) quality preservation, insect control and prevention of condensation during shipment of commodities in shipping containers known as TranSafeliners™. Hermetic storage is based on the principle of generation of an oxygendepleted, carbon dioxide-enriched interstitial atmosphere caused by the respiration of the living organisms in the ecological system of a sealed storage. A sufficiently low oxygen and elevated CO2, atmosphere is created through a natural metabolic process based on insect respiration and, in cases where the commodity has sufficiently high moisture, the respiration of the microorganisms within a sealed storage system. Applications for which hermetic technology has been most widely accepted are long-term storage of cereal grains, primarily rice, corn, barley, wheat and a variety of seeds to preserve germination potential and vigor and quality preservation of high-value commodities such as cocoa and coffee. Under field conditions in a cocoa bean storage facility in Makassar, Indonesia, a hermetically sealed flexible structure containing 6.7 tonnes of cocoa beans at an initial moisture content of 7.3% and relative humidity of 70% was monitored for oxygen concentration and quality parameters of the beans. The measurements showed a decrease in oxygen concentration to 0.3% after 5.5 days. No insects survived the oxygen depleted biogenerated atmosphere. Similar trials were carried out in Ghana by COCOBOD in which three stacks for hermetic storage and one stack each for conventional storage (without fumigation) and standard storage (with fumigation) were built for sampling and observation. At the sixth week of storage 100% mortality of insects was recorded in the Cocoon TM . All the cocoa beans inside the Cocoon TM maintained their quality category throughout the storage period and the grade remained the same after nine weeks of storage as it was at the beginning of the experiment.Key Words: Coffee, cocoa beans, hermetic storage, insects, modified atmospheres, quality preservation, seeds, storage RÉSUMÉLe stockage hermétique constitue une méthode satisfaisante de stockage pour la protection des produits sans recours aux fumigènes et à la refrigeration, pour le contrôle des insectes et la preservation de la qualité des produits stockés. Le...

show abstract