Synthesis of 3-O-methylgallic acid a powerful antioxidant by electrochemical conversion of syringic acid

Oil quality parameters and quantitative measurement of major secoiridoid derivatives in Neb Jmel olive oil from various Tunisian origins using qNMR

“…The optical density (OD) was measured at = 765 nm, using a spectrophotometer (Shimadzu UV-1800 PC; Shimadzu, Kyoto, Japan). The concentration of o-diphenolic compounds in the water/methanol extract was determined by the method described by Dridi-Gargouri et al 33 The total o-diphenolic content was expressed as milligrams of gallic acid (GA) equivalent per kilogram of oil (y = 1.144x, R 2 = 0.999). The optical density (OD) was measured at = 370 nm, using a spectrophotometer (Shimadzu UV-1800 PC).…”

Comparative Study of Oil Quality and Aroma Profiles from Tunisian Olive Cultivars Growing in Saharian Oasis Using Chemometric Analysis

“…The concentration of O-diphenols compounds in the methanolic extract was determined by the method described by Gargouri et al 22 . The total of O-diphenols content was expressed as milligrams of gallic acid GA equivalent per kilogram of oil.…”

“…The most important group identified was mainly alcohols with 7.3-42.7 of the total peak area percentage, aldehydes 0. [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] as well as esters 0-26.8 , which contribute to aroma of olive oil 11 . Comparing the four olive cultivars collected at the same date and grown under the same pedoclimatic conditions showed a great qualitative and quantitative difference in the volatile fruit contents.…”

Effect of Agricultural Sites on Differentiation between Chemlali and Neb Jmel Olive Oils

“…The concentration of o-diphenolic compounds in the water-methanol extract was determined by the method described by Dridi-Gargouri et al 30 . The total o-diphenolic content was expressed as milligrams of gallic acid GA equivalent per kilogram of oil y 1.144x, R 2 0.999 .…”