Stored Grain Protection: cases studies in Portugal

Vortrag

Autor/innen

  • Maria Otilia Carvalho University of Lisbon, Instituto Superior de Agronomia, aLEAF-Linking Landscape, Environment, Agriculture and Food. Tapada da Ajuda, 1349-017 Lisbon
  • Ana Filipa Cambeiro University of Lisbon, Instituto Superior de Agronomia, aLEAF-Linking Landscape, Environment, Agriculture and Food. Tapada da Ajuda, 1349-017 Lisbon
  • Patricia Fradinho University of Lisbon, Instituto Superior de Agronomia, aLEAF-Linking Landscape, Environment, Agriculture and Food. Tapada da Ajuda, 1349-017 Lisbon
  • Ana Magro University of Lisbon, Instituto Superior de Agronomia, aLEAF-Linking Landscape, Environment, Agriculture and Food. Tapada da Ajuda, 1349-017 Lisbon
  • Bárbara Teixeira Instituto Português do Mar e da Atmosfera, Department of Sea and Marine Resources, R. Alfredo Magalhães Ramalho, 6, 1495-006 Lisbon
  • Rogério Mendes Instituto Português do Mar e da Atmosfera, Department of Sea and Marine Resources, R. Alfredo Magalhães Ramalho, 6, 1495-006 Lisbon
  • Miguel Pedro Mourato University of Lisbon, Instituto Superior de Agronomia, aLEAF-Linking Landscape, Environment, Agriculture and Food. Tapada da Ajuda, 1349-017 Lisbon

DOI:

https://doi.org/10.5073/jka.2018.463.010

Schlagworte:

insect edibility, paddy, hermetic storage, biogenerated atmosphere, Tribolium castaneum, Sitophilus zeamais

Abstract

Considering the edibility of insects’ species associated with storage ecosystem, chemical control methods can be easily replaced by environmental and economically sustainable alternatives.
Use of biogenerated atmospheres is an inexpensive method that tolerates insect presence. In Portugal, during one year, hermetic bags were used to store paddy under 65-75-85% relative humidity (RH) and 14-17-24ºC temperatures. Brown rice infested with Sitophilus zeamais adults was placed inside the hermetic bags.
Biogenerated atmosphere was naturally produced inside the hermetic bag, at 85% RH, with low O2 and high CO2 contents, showing that S. zeamais can survive but has no progeny at 14º-17ºC, or attained 100% mortality before producing progeny at 24ºC. The most abundant fungi isolated were Alternaria alternata and Epicoccum nigrum. The results showed the importance of the RH on changes in atmospheric gas content of paddy, due to biological agents’ activity.
Analysing the edibility of insects species associated with stored grain, preliminary studies were carried out to evaluate the nutritional value of immatures stages of Tribolium castaneum. Larvae of T. castaneum had a content of 21.4% protein, 9.1% lipids, 8.8% fiber, and a relevant content of eight essential amino acids and also manganese and copper. The edibility of insects must be consider given their high nutritional value, low emissions of Green House Gases (GHGs), low requirements for land, and by reducing and mitigating the need for chemical control.

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Veröffentlicht

2018-10-22

Ausgabe

Nr. 463 (2018): Proceedings of the 12th International Working Conference on Stored Product Protection (IWCSPP) in Berlin, Germany, October 7-11, 2018

Rubrik

Session 1: Food Security and Challenges to Stored Product Protection

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