@article{oai:kyutech.repo.nii.ac.jp:00005459, author = {Husen, Rafidah and Ando, Yoshito and 安藤, 義人 and Ismail, Amin and Shirai, Yoshihito and 白井, 義人}, issue = {3}, journal = {Malaysian Journal of Analytical Sciences}, month = {Dec}, note = {This study evaluate the effect of ultrasonic application in the extraction process on total phenolic content (TPC) of Hass avocado (Persea americana Mill) pulp. In this study, the solid/ solvent ratio of 1/30 (wt/ vol) and extraction temperature of 40 degree Celsius gave higher TPC value. This ratio and temperature was applied in the ultrasonic-assisted extraction (UAE) of avocado pulp. This study then compared the TPC obtained from the avocado pulp extract without involving ultrasonic and the TPC obtained from the UAE. Results showed that the TPC value of avocado pulp was significantly higher in the UAE (235.77 mg GAE/ 100g dried sample) compared to the TPC in the non-UAE (166.32 mg GAE/ 100g dried sample). The increase in the TPC was between ∼31 % and ∼41 % when 5 to 20 min of ultra sonication applied in the extraction. Ultra sonication duration of 15 min gave the highest TPC where the value was significantly higher compared to the other duration.}, pages = {690--694}, title = {Effect of Ultrasonic-Assisted Extraction on Phenolic Content of Avocado}, volume = {18}, year = {2014}, yomi = {アンドウ, ヨシト and シライ, ヨシヒト} }