Acidity, dened as percent oleic acid, is a parameter that indicates olive oil freshness. A high acidity value indicates the oil quality has diminished and is at risk of becoming rancid. Acidity is used to discriminate an extra virgin olive oil from all other olive oils. According to the CEE 2568/91 regulation, olive oil is considered extra virgin when its acidity level is below 1%. A low acidity value also indicates a natural extraction process occurred soon after olive harvesting. The HI3897 kit utilizes a titration method where the endpoint is visually determined when the color changes from yellow-green to pink. Chemical Parameters Olive Storage Period (between harvesting and extraction) within 48 hours 2 to 4 days over 4 days Acidity (as % oleic acid ) 0.3 0.4 0.5 The HI180 is a compact and lightweight magnetic stirrer which incorporates electronic controls that allow the user to regulate the speed with precision. In addition to speed control, Hanna’s Speedsafe™ system will assure that the maximum speed is never exceeded. HI3897 Olive Oil Acidity Test Kit Now there is an easy, aordable and accurate way to determine the quality, classication and freshness of your olive oil. Acidity (as % oleic acid) is the most fundamental measurement of olive oil. It is the primary indicator of olive oil purity and freshness. The quality of olive oil is directly related to the degree of breakdown of the fatty acids in the oil. As the bound fatty acids break down, free fatty acids are formed, which increase the % acidity of the oil. Acidity, is a measure of the free fatty acid present in the oil, which is directly related to its purity. The quality of olive oil can be adversely aected during either maturation or by environmental conditions. Mishandling, processing and bruising during harvesting can also contribute to a breakdown of fatty acids and an increase in free acidity. Improper and/or long-term storage can cause olive oil to break down and become rancid. Regular acidity testing is the best way to ensure and maintain quality and freshness. Normally, testing acidity is a complicated process requiring the use of various chemicals in a laboratory environment. Hanna has simplied this process in an easy-to-understand test kit that can be used by almost anyone to produce quick and accurate results. Studies have shown that the quality of olive oil has a direct impact on its health benets. Extra Virgin Olive Oil contains higher levels of antioxidants, particularly phenols and vitamin E (because it is less processed). Antioxidants can help prevent oxidation damage to body tissue caused by free radicals. Studies have also shown that the oxidation of LDL (bad) cholesterol is associated with the hardening of arteries that can lead to heart disease. With the HI3897 test kit, it is possible to easily and accurately test the quality of olive oil at various stages of processing and storage to monitor and maintain the highest quality. 9 Chemical Test Kits 9.8 | www.hannainst.com
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