Increasing the innocuity of the pollen fermented with the use of acetic acid
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Abstract
Silage is a method of bioconservation applied to bee pollen and is based on a lactic acid fermentation. There are economic losses in the silage process due to the development of molds and yeasts on the silos surface. Microbial development is due to direct contact with oxygen and environmental pollution. Therefore, this work aims to: Select the minimum and effective concentration of acetic acid diluted in honey to inhibit the development of molds and yeasts on the surface of apicultural pollen silos on a productive scale. 0, 1, 3 and 5% acetic acid were tested in silos made on a laboratory scale. Mold and yeast count and visual control of silos were performed. The acidity and pH results were compared through a simple variance analysis and Tukey test. The most effective concentration was tested in 83 silos on a productive scale. The results were compared with those obtained in 92 silos where honey was used to cover the surface. 5% acetic acid was the most effective concentration to inhibit mold and yeast on a laboratory scale. On a productive scale there was a decrease in non-compliant silos due to molds and yeasts from 18.5 to 0%; an increase in silos without the detection of molds and yeasts, from 9.8 and 50% to 32.6 and 90.4% respectively. Acetic acid diluted to 5% in honey is effective in inhibiting the development of molds and yeasts on the surface of pollen silos and thus increases the production and safety of the final product.
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