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Definition of Ester Value (EV):
- The ester value is the number of milligrams of potassium hydroxide (KOH) required to saponify the esters in 1 gram of fat or oil.
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Significance Ester Value (EV):
- Provides information on the amount of esters (triglycerides) in the fat or oil, which indirectly reflects the presence of free fatty acids and glycerol.
- Used in conjunction with acid value to understand the composition of the fat or oil.
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Principle:
- The ester value is calculated by subtracting the acid value from the saponification value.
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Equation:
- $\text{Ester Value (EV)} = \text{Saponification Value (SV)} – \text{Acid Value (AV)}$
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