4. Conclusion
Peel extract presents more antioxidant and radical scavenging
capacity than seed extract due to its polyphenols content, such as
procyanidins, epicatechin and other non-identified compounds.
These were mainly responsible for the antioxidant response in the
mixture of the three natural additives utilized in this study. The
peel or seed extract, in combination with nisin, presents a synergic
effect in the antimicrobial response. The mixture of nisin and avocado
peel comprises the optimal mixture that maximizes the
antioxidant and antimicrobial response. The use of a natural antioxidant
such as avocado peel, in combination with a natural conservative
such as nisin, provides a novel combination that may
reduce the amount of nisin employed at the industrial level, not
only reducing costs, but also promoting the use of natural compounds
that are derived from agro-industrial byproducts with good
antioxidant and antimicrobial effects. This mixture also favors the
trend towards the use of natural additives.