Biogenic amines and hygienic quality of lucerne silage
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This experiment examined the influence of two different silage additives of biological (Lactococcus lactis, Lactobacillus plantarum, Enterococcus faecium, enzyme xylanase) and chemical (43% formic acid, 30% ammonium formate, 10% propionic acid, 2% benzoic acid) types on biogenic amines concentration, nutrient content, fermentation process, and microbiologic indicators in lucerne (Medicago sativa) silage after 90 days of fermentation. The biological additive significantly (P < 0.05) increased putrescine (+51%), lactic acid (+11%) and protein content (+11%) in comparison with control silage. It significantly decreased cadaverine (-29%), histamine (-57%), spermidine (-15%), spermine (-55%), acetic acid (-40%), ethanol (-55%), ammonium (-25%) and ash (-9%). After the chemical-additive treatment, greater amounts of histamine and tyramine were recorded. Significant decrease was observed in the concentrations of putrescine (-18%), cadaverine (-55%), spermidine (-47%), spermine (-45%), lactic acid (-16%), acetic acid (-46%), ammonium (-59%), ash (-13%) and fat (-24%). Populations of bacteria associated with lactic acid fermentation, moulds, yeasts, enterobacteria and total microorganisms count were also influenced. Both biological and chemical additives can be highly recommended for producing high-quality silages meeting hygienic requirements. In lucerne silage, the chemical preservative showed a stronger effect in achieving the health safety of silage compared to the biological inoculant.
Document typePeer reviewed
Document versionFinal PDF
SourceOpen Life Sciences. 2016, vol. 11, issue 1, p. 280-286.
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