2009
DOI: 10.1271/bbb.80832
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Marker Constituents of the Natural Antioxidant Eucalyptus Leaf Extract for the Evaluation of Food Additives

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Cited by 74 publications
(55 citation statements)
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“…Antioxidant effect observed in E. globulus leaves was due to its high TPC and CTC as shown in Table 2. The same results were found by Amakura et al (2009).…”
Section: Antioxidant Activitysupporting
confidence: 89%
“…Antioxidant effect observed in E. globulus leaves was due to its high TPC and CTC as shown in Table 2. The same results were found by Amakura et al (2009).…”
Section: Antioxidant Activitysupporting
confidence: 89%
“…Preparative TLC of the n-hexane extract yielded eugenol (3) and acetyleugenol (4). The EtOAc extract was subjected to a combination of column chromatography over Diaion HP-20, Toyopearl HW40, YMC-gel OD-SAQ and Sephadex LH-20 to furnish compound 1 and 15 known compounds which were characterized by their NMR data or a direct HPLC comparison with authentic samples as gallic acid (5), ellagic acid (6), 3,3 0 ,4-tri-Omethylellagic acid (7), eugenol 4-O-(6 0 -O-galloyl)-glucoside (8), 5) biflorin (9), 9) isobiflorin (10), 5) galloyl-4,6-HHDP-glucose (15), 13) strictinin (16), 14) tellimagrandins I (17) 12) and II (18), 12) and casuarictin (19) 14) (Fig. 1).…”
Section: Resultsmentioning
confidence: 99%
“…The EtOAc extract was fractionated by column chromatography over Diaion HP-20 and subsequent repeated column chromatography over Toyopearl HW40, YMC-gel ODSAQ and Sephadex LH-20 to yield compound 2 and 14 known compounds [eugenol (3), thymol (20), syringic acid (21), gallic acid (5), ellagic acid (6), pimentol (22), 15) vanillin (23), casuarinin (24), 14) 1,2,3,6-tetra-O-galloylglucose (14), penta-O-galloylglucose (25), 12) (28), and (29) 11) (Fig. 1).…”
Section: Resultsmentioning
confidence: 99%
“…After evaporation of solvents under vacuum at 40 °C, the dried fractions were solubilised in ethanol 75% and then, their absorbance was measured at 280 nm using Agilent Spectrophotometer (SpectroScan 50, United Kingdom). Based on the absorbance data, fractions with similar optical density were pooled determining three 3 www. siftdesk.…”
Section: Chromatographic Fractionation Of Extractmentioning
confidence: 99%