Table olives and health: a review

Area of Science:

• Food Science
• Nutritional Science
• Phytochemistry

Background:

• Table olives, a fermented product of *Olea europaea* L., are integral to the Mediterranean Diet.
• Their nutritional and organoleptic properties are influenced by cultivar, ripening stage, and processing.
• Key nutritional components include monounsaturated fat (MUFA), fiber, and vitamin E.

Purpose of the Study:

• To comprehensively review the nutrient and bioactive compound content of table olives.
• To explore the health benefits associated with table olive consumption.
• To discuss factors influencing table olive composition and potential production innovations.

Main Methods:

• Literature review synthesizing existing research on table olives.
• Analysis of nutritional and phytochemical composition.
• Evaluation of reported health benefits from *in vitro*, *in vivo*, and human studies.

Main Results:

• Table olives are rich in MUFA (oleic acid), fiber, vitamin E, and phenolic compounds, notably hydroxytyrosol (HT).
• Hydroxytyrosol exhibits significant antioxidant and anti-inflammatory activities.
• Potential health benefits include improved cardiovascular health and protection against oxidative damage.

Conclusions:

• The health benefits of table olives are attributed to MUFA, vitamin E, and hydroxytyrosol.
• Further research is needed due to a scarcity of comprehensive studies.
• Innovations in production, such as reducing salt content, are being explored.