Wednesday, October 22, 2014

NO Long-Term Storing Food In Buckets Without Mylar Bags

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Basically, if you're doing this you cannot expect moisture or oxygen to be kept out, even with *11* extra oxygen absorbers. BYU did a study (here). The conclusion is below.

Results and Discussion
Measurements were taken of food grade buckets (gasketed and not) of wheat for two and a half weeks on days 1, 5, 9, 13, and 17. The results for the control stayed near the expected 20.9% oxygen content.

Conclusion
The O2 levels in the buckets over time were inconsistent. It is evident that considerable O2 infiltrated the buckets. Those buckets containing 8 packets with a capacity to absorb more O2 than was sealed in the bucket both failed by day 9. Failure of buckets containing even more packets was sporadic and inconsistent. If permeation through the HDPE were the only means of O2 infiltration, the results of duplicate buckets would have been consistent. The failure of one bucket in each replicate indicates that the seals were imperfect. A second experiment was carried out with less expensive gasketed lids with even a higher rate of failure (data not shown).

These results indicate that it is possible to reduce the O2 level to < 1% and hold it for 12 days to accomplish disinfestation. It would require the use of 11 or more O2 absorber packets in each bucket. However, the frequency of failure was unacceptably high. It would be difficult for a consumer to know if conditions required for disinfestations had been achieved because of the unpredictability of the seals. Therefore, it is not recommend that consumers use O2 absorbing packets in 5-gal HDPE buckets to disinfest wheat or other grains. For the same reasons it is not recommended to store products sensitive to oxidation in 5-gal HDPE buckets unless the product is to be used before oxidative degradation occurs.

Now here is my mylar and oyxgen absorber and silica info preptips101.blogspot.com/2014/10/my-mylar-tutorial-why-i-recommend.html!

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