Blog
What do polyphenols, acidity, peroxide value, K232, K268 and ΔK tell you about olive oil quality? We explain the measurements and compare Kollias laboratory results from the 2023, 2024 and 2025 harvests.
See the laboratory results from our 2024 harvest, including acidity, peroxide value, ultraviolet absorption measurements, and polyphenol content, and learn what each result reveals about extra virgin olive oil quality.
What is high-polyphenol olive oil, and why does it matter? Learn how polyphenols affect flavor, antioxidant activity, freshness and shelf life, why early-harvest olive oil tends to contain more of them, and how Kollias Olive Oil compares.
Peroxides, Waxes, Ultraviolet Absorption & Blending As mentioned in Olive Oil Science Part II, acidity...
What does acidity really mean in extra virgin olive oil? Learn why low acidity is a sign of careful harvesting and processing, why it cannot be judged by taste, and how Kollias has consistently tested well below the extra virgin olive oil limit.