Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 21 ISSUE 4
Written by Tarek FOUDA, Mohamed EL-KHOLY, Adel ELMETWALLI, Mohamed DARWESH, Amal EL ZANATY, Shimaa SALAH

The experiments were conducted directly after the flax harvest season with the object of conditioning the flaxseeds in optimal condition to preserve them in storage as long as possible using different types of storage bags. The measurements during the storage period such as moisture content of seed inside the bags, temperature, the percentage of carbon dioxide , oxygen, peroxide value and free fatty acids, as well as fatty acid ratios. The results showed that, during the storage process, the carbon dioxide concentration with bags (type 7 layers) showed the highest levels of CO₂ concentration which increased from 0.1 to 21.3 %, from 0.1 to 20.5 % and from 0.0 to 19.8 for the non-treated seeds, conduction heat treated and infrared heat treated. seeds respectively after six months of storage and starts to decrease again during the winter months due to lower seeds temperature and respiration rate. While the bags (type 3 layers) showed an increase of CO₂ level from 0.1 to 16.8 %, 0.1 to 16.4 % and from 0.0 to 16 for the non-treated, conduction heat treated and infrared heat treated seeds respectively. However burlap bags showed CO₂ levels ranged from 0.1 to 0.2 % for both treated and non-treated flaxseeds. Also, The total microbial load at the end of storage period approached 885, 861 and 3,512 colonies/g for the non-treated flaxseeds stored in plastic bags 3 and 7 layers and burlap bags respectively. While, the corresponded values for the conduction heat treated flaxseeds were 196, 180 and 2,310 colonies/g respectively. And for the Infrared heat treated seeds were 178, 163 and 1,240 colonies/g respectively. However, at the end of the storage process both bags types 3 and 7 layers recorded lower peroxide value and free fatty acid in comparison with burlap bags during the storage time which indicated good oil quality of the stored seeds. In general, Storage of flaxseeds in both types of tested hermetic bags showed safe storage of flaxseeds with keeping the final quality in comparison with burlap bags.

[Read full article] [Citation]

SPUPOPUPNO1