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Effects of Different Solvents on Extraction Rate of Gallic Acid in the Inner Woody Shell of Walnuts (Methanol, Ethanol)

Sadaf Soltani Ardestani, Ali Akbar Safe Kordi, Ali Vaziri and Hosein Attar

In this study we tried to fine the best solvent for extraction of Gallic acid from inner woody shall of walnut. Solvents include Ethanol, Methanol, 70% Ethanol with 30% Water and 70% Methanol with 30% Water. After the extraction, samples were predicated with rotary, and then inject samples to HPLC and Results were analyzed. The highest of dry matter rate was for methanol-water (Respectively 70%, 30%). The best extractions of Gallic acid were related to Methanol with 0.33%. So one of the material that removed from the food industry (inner woody shall of walnut) have favorable content of Gallic acid.