Results 171 to 180 of about 10,259 (206)

Comparative Study of Binding Behaviors of Cyanidin, Cyanidin-3-Galactoside, Peonidin with Tyrosinase

Journal of Fluorescence, 2023
Cyanidin, peonidin and cyanidin-3-galactoside are the common anthocyanins with a variety of biological activities. Tyrosinase is a speed-limiting enzyme associated with melanin production. The inhibition of tyrosinase activity can prevent melanin disease while contributing to whitening.
Meizi, Wang, Rongda, Chen, Suqing, Wang, Jingjing, Cui, Di, Lian, Li, Li   +5 more
openaire   +2 more sources

Acylated peonidin glycosides from duskish mutant flowers of Ipomoea nil

Phytochemistry, 2005
Five acylated peonidin glycosides were isolated from the pale gray-purple flowers of a duskish mutant in the Japanese morning glory (Ipomoea nil or Pharbitis nil) as major pigments, along with a known anthocyanin, Heavenly Blue Anthocyanin (HBA). Three of these were based on peonidin 3-sophoroside and two on peonidin 3-sophoroside-5-glucoside as their ...
Norio, Saito, Kenjiro, Toki, Yasumasa, Morita, Atsushi, Hoshino, Shigeru, Iida, Atsushi, Shigihara, Toshio, Honda   +6 more
openaire   +2 more sources

Acylated peonidin glycosides in the violet-blue cultivars of Pharbitis nil

Phytochemistry, 1992
Abstract Five peonidin glycosides were isolated from purple to violet flowers of Pharbitis nil and their structures determined by spectral methods. Three pigments were identified as the 6-trans-caffeate and 6,6″-trans-dicaffeate of peonidin 3-sophoroside-5-glucoside and heavenly blue anthocyanin, respectively; the other two pigments were peonidin 3 ...
Lu Ting Sen, Saito Norio, Yokoi Masato, Shigihara Atsushi, Honda Toshio   +4 more
openaire   +1 more source

Peonidin‐3‐monoglucoside in Vinifera Grapes

Journal of Food Science, 1963
SUMMARY The band‐four pigment in the general eight‐band pattern for red vinifera grapes as observed in this laboratory was isolated from Freisa grapes with paper chromatographic techniques. Hydrolysis, partial hydrolysis, and alkaline microdegradation studies on the pure pigment demonstrated that it was peonidin‐3‐monoglucoside.
R. F. ALBACH, R. E. KEPNER, A. D. WEBB
openaire   +1 more source

Acylated peonidin glycosides in the slate flowers of Pharbitis nil

Phytochemistry, 1996
Abstract Two new acylated and three known anthocyanins were isolated from the slate flowers of Pharbitis nil cultivars. The new anthocyanins were determined to be peonidin 3-O-[6-O-(trans-3-O-(β- d - glycosyl)caffeyl )-β- d - glucoside ] as a major pigment, and cyanidin 3-O-[6-O-(trans-3-O-(β- d - glycosyl ) caffeyl )-β- d -
Norio Saito, Fumi Tatsuzawa, Kichiji Kasahara, Masato Yokoi, Shigeru Iida, Atsushi Shigihara   +5 more
openaire   +1 more source

2,4-Dichlorophenoxyacetic Acid Increases Peonidin Derivatives in Red Norland Periderm

American Journal of Potato Research, 2008
Studies were conducted to determine the effects of selected plant growth regulators on red color development of Red Norland potato periderm, and the mechanism by which color changes occurred. Two derivatives of the auxin 2,4-dichlorophenoxyacetic acid (2,4-D ester and 2,4-D amine), S-abscisic acid, n-propyl dihydrojasmonate, and the ethylene synthesis ...
Carl J. Rosen, Jeffrey A. Roessler, Peter D. Petracek, Shannon Engelman, Cindy B. S. Tong   +4 more
openaire   +1 more source

Peonidin 3-O-neohesperidoside and other flavonoids from Cyclamen persicum petals

Phytochemistry, 1999
Abstract The major anthocyanins and flavonols of two cultivars of Cyclamen persicum were characterised by 1 H- and 13 C-NMR spectroscopy. A previously unreported anthocyanin, peonidin 3- O -α- l -rhamnopyranosyl-(1-2)-β- d -glucopyranoside was isolated from C. persicum cv. Bonfire. The predominant anthocyanins isolated from C.
Rosemary F Webby, Murray R Boase
openaire   +1 more source

Separation of Peonidin and Cyanidin, Two Anthocyanidins, in Cranberries by Capillary Electrophoresis

Journal of Liquid Chromatography & Related Technologies, 2004
Abstract A method by capillary electrophoresis for the separation and quantification of cranberry pigment aglycones was developed. The method employed an acidic buffer consisting of 150 mM phosphoric acid, 3 M urea, and 50 mM β‐cyclodextrin (pH 2.11). The acidic pH of the buffer was advantageous in preserving the flavylium cation, maximizing absorbency
D. J. Watson, A. A. Bushway, R. J. Bushway   +2 more
openaire   +1 more source

Kinetics of the thermal degradation of cyanidin-3-rutinoside and peonidin-3-rutinoside

Zeitschrift f�r Lebensmittel-Untersuchung und -Forschung, 1973
The kinetics of the thermal degradation of two anthocyanins, namely Cyanidin-3-rutinoside and peonidin.-3-rutinoside, depending on the pH and the biochemical composition of the solvent has been investigated. The results obtained indicate that the temperature and the pH of the medium exert strong influence on the kinetics of the degradation.
Stojan Stojchev Tanchev, Nickolina Joncheva   +1 more
openaire   +1 more source