
Head of the Oils and Fats Department at the Food Industries and Nutrition Research Institute, National Research Centre.
Many believe that the dark green color of olive oil indicates higher quality. But is it true?
The fact is that the color of olive oil is not an accurate indicator of its quality. It can be a deceptive indicator for many,
As the color of olive oil is affected by several factors, including:
· Type of olives: olive varieties differ from each other in the ingredients that give the oil its color.
· Harvest time: early harvest gives dark green oil, while late harvest gives yellow oil.
· The degree of maturity: as the olives ripen, the lower their chlorophyll content, and the color of the oil changes.
· Geographical area: soil and climate affect the composition of olives, and therefore their color.
· Extraction method: The techniques used to extract the oil affect its color.

What determines the quality of olive oil?
The true quality of olive oil is determined by other criteria that are more important than color, such as:
· pH: the lower the acidity, the better the quality of the oil. On the basis of which the grade of olive oil is determined.
· Peroxide number: This indicates the quality of the oil, the conditions of its production during the different stages of collection, transportation, extraction, storage and circulation, its stability against oxidation and the freshness of the oil.
· Smell and flavor: olive oil should have a distinctive smell and flavor (such as a degree of bitterness felt by the tongue and a degree of silkiness (sauce) felt while swallowing oil in Al-Zour), which indicates the type of olives and the area of their production.
· Purity: The oil should be pure and free of impurities.
Tips for choosing olive oil:
· Buy from reliable sources.
· Read the label: pay attention to the type of oil, production date, shelf life, and oil pH.
· Taste the oil: taste a small amount to evaluate its taste and smell (if you have sufficient experience or show the product to a specialist).
Conclusion:
Olive oil has many colors, like the colors of honey, depending on the source and type of fruit, the time of harvest, and the subsequent treatments will be the resulting color.
The color of olive oil is a visual factor rather than an accurate indicator of its quality. Real quality is determined by other criteria such as acidity, degree of peroxide, phenolic content of oil, smell and flavor. So, when choosing olive oil, don't rely on color only, but look for full information from specialists and experts in the field.
Note: This text combines basic information and presents it in a simple and clear manner, making it easier for the reader to understand the relationship between the color of olive oil and Jawdat