Free and microencapsulated essential oils incubated in vitro: Ruminal stability and fermentation parameters
| Autor: | Nadia Guzzo, Nida Amin, Lucia Bailoni, Franco Tagliapietra, Sheyla Arango |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
lcsh:Veterinary medicine
General Veterinary Fermentation parameters In vitro incubation Antimicrobial Cinnamaldehyde In vitro Article Matrix (chemical analysis) chemistry.chemical_compound Rumen chemistry Rumen stability Essential oils Microencapsulation lcsh:Zoology lcsh:SF600-1100 Degradation (geology) Animal Science and Zoology Fermentation lcsh:QL1-991 Food science |
| Zdroj: | Animals : an Open Access Journal from MDPI Animals, Vol 11, Iss 180, p 180 (2021) Animals Volume 11 Issue 1 |
| Popis: | Essential oils (EOs) are generally considered as an alternative to antibiotics because of their antimicrobial properties. Despite their vast variety, their volatile nature poses hindrance on their use in animal feeds, which demands a high degree of stability. This study aimed at testing the susceptibility of three EOs (mixtures of EOs based on cinnamaldehyde, named Olistat-Cyn, Olistat-G, and Olistat-P) in two forms (free: fEOs and microencapsulated: mEOs) to in vitro ruminal degradation using the Ankom DaisyII technique. The microencapsulation was made using a matrix based on vegetable hydrogenated fatty acids. Compared to the fEOs, which were completely degraded within 48 h of in vitro incubation, the mEOs showed a low ruminal disappearance. In comparison to the fermentation profile at 0 h, Olistat-G significantly decreased the pH and the total protozoa number after 48 h, while the total VFAs increased. However, the other EOs (Olistat-Cyn and Olistat-P) had no effect on the rumen fermentation parameters. In conclusion, the protection of EOs from ruminal degradation by microencapsulation was found to be very effective to ensure rumen by-pass. Among the EOs, Olistat-G was capable of changing rumen fermentation, potentially reducing methane emissions. |
| Databáze: | OpenAIRE |
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