1989
DOI: 10.3136/nskkk1962.36.11_927
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Determination of L-Ascorbic acid, tocopherol, carotene and chlorophyll in various teas.

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Cited by 14 publications
(7 citation statements)
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“…β-Carotene was extracted using the method of Kitada et al (14). Hsian-tsao water extract (0.1 g) was mixed with 10 mL of 1% pyrogallol in methanol/dichloromethane (1:1, v/v).…”
Section: Methodsmentioning
confidence: 99%
“…β-Carotene was extracted using the method of Kitada et al (14). Hsian-tsao water extract (0.1 g) was mixed with 10 mL of 1% pyrogallol in methanol/dichloromethane (1:1, v/v).…”
Section: Methodsmentioning
confidence: 99%
“…HPLC analysis was performed with a Hitachi liquid chromatograph (Hitachi, Ltd., Tokyo, Japan), consisting of a Model L-6200 pump, a Rheodyne Model 7125 syringe-loading sample injector, and a Model D-2000 integrator. The other HPLC analytical conditions are as follows: [condition A (Kitada et al, 1989)] LiChrospher RP-18 reversed-phase column (5 µm, 250 × 4 mm i.d., Merck), eluting solvent of acetone/methanol/ acetonitrile (1:2:2 v/v/v) at a flow rate of 0.7 mL/min, monitor UV-vis detector (L-4200) at 470 nm; [condition B (Carpenter, 1979)] LiChrosorb Si-60 (7 µm, 250 × 4 mm i.d., Merck), eluting solvent of n-hexane/2-propanol/ethanol (100:0.3:0.2 v/v/ v) at a flow rate of 0.7 mL/min, monitor UV detector (L-4200) at 295 nm.…”
Section: Methodsmentioning
confidence: 99%
“…The carotene content was determined according to Kitada et al (1989). Briefly, sample A ( 50 mg) was extracted with 10 mL of pyrogallol (1%) methanoldichloromethane (1:1) solution.…”
Section: -Carotenementioning
confidence: 99%