نتایج جستجو برای: 5 caffeoyl quinic acid

تعداد نتایج: 1845563  

Journal: :Bioorganic & medicinal chemistry letters 2012
Eisuke Kato Michitsugu Yama Ryo Nakagomi Toshiro Shibata Keizo Hosokawa Jun Kawabata

Filipendula kamtschatica is a plant utilized as a traditional medicine by Ainu people in Japan, but its chemical constituents are not much studied. Pancreatic lipase inhibitors are a promising tool for the treatment of obesity. We searched for natural lipase inhibitors from F. kamtschatica and two new compounds were isolated along with the known flavonoid glycoside. The structure elucidation of...

Journal: :Journal of agricultural and food chemistry 2006
Christoph Müller Roman Lang Thomas Hofmann

The objective of this study was to investigate the potential of various raw bean components as precursors of pyrogallol (1), hydroxyhydroquinone (2), catechol (3), 4-ethylcatechol (4), 4-methylcatechol (5), and 3-methylcatechol (6) under quasi "natural" roasting conditions by using the recently developed "in bean" model roast experiments. Freeze-dried, fully extracted bean shells were loaded wi...

Journal: :Plant physiology 1999
S Maury P Geoffroy M Legrand

The biosynthesis of lignin monomers involves two methylation steps catalyzed by orthodiphenol-O-methyltransferases: caffeic acid/5-hydroxyferulic acid 3/5-O-methyltransferases (COMTs) and caffeoyl-coenzyme A (CoA)/5-hydroxyferuloyl-CoA 3/5-O-methyltransferases (CCoAOMTs). Two COMT classes (I and II) were already known to occur in tobacco (Nicotiana tabacum) and three distinct CCoAOMT classes ha...

Journal: :Plant physiology 1966
A O Taylor M Zucker

The active turnover of chlorogenic acid (3-caffeoylquinic acid(3)), a major phenolic component of Xanthium leaves and potato tuber disks, has been demonstrated in these tissues. Pulse-labelling experiments with radioactive l-phenylalanine and trans-cinnamic acid as well as direct feeding experiments with chlorogenic acid-(14)C labelled in the caffeoyl moiety have been employed in the turnover s...

Journal: :Plant physiology 2016
Alexander M Walker Steven A Sattler Matt Regner Jeffrey P Jones John Ralph Wilfred Vermerris Scott E Sattler ChulHee Kang

Caffeoyl-coenzyme A 3-O-methyltransferase (CCoAOMT) is an S-adenosyl methionine (SAM)-dependent O-methyltransferase responsible for methylation of the meta-hydroxyl group of caffeoyl-coenzyme A (CoA) on the pathway to monolignols, with their ring methoxylation status characteristic of guaiacyl or syringyl units in lignin. In order to better understand the unique class of type 2 O-methyltransfer...

Journal: :Proceedings of the National Academy of Sciences 1950

Journal: :Bitlis Eren üniversitesi fen bilimleri dergisi 2022

Recently, agents with natural antioxidant and antimicrobial properties have been popularly studied. For this purpose, phenolic compounds, terpenes, organic acids are examined in their properties. Of these, increasingly being used pharmacology, medicine, food, industry. Quinic acid is a compound found many edible fruits plants. In study, the effect of quinic acid, which has structure cyclohexane...

Journal: :Plant physiology 2009
Michaell Sullivan

Red clover (Trifolium pratense) leaves accumulate several mumol g(-1) fresh weight of phaselic acid [2-O-(caffeoyl)-l-malate]. Postharvest oxidation of such o-diphenols to o-quinones by endogenous polyphenol oxidases prevents breakdown of forage protein during storage. Forage crops like alfalfa (Medicago sativa) lack both polyphenol oxidase and o-diphenols, and breakdown of their protein upon h...

2017
Heidi D. Jensen Carsten Struve Søren B. Christensen Karen A. Krogfelt

The antibacterial effect of cranberry juice and the organic acids therein on infection by uropathogenic Escherichia coli was studied in an experimental mouse model of urinary tract infection (UTI). Reduced bacterial counts were found in the bladder (P < 0.01) of mice drinking fresh cranberry juice. Commercially available cranberry juice cocktail also significantly reduced (P < 0.01) bacterial p...

Journal: :The Journal of biological chemistry 2000
H Meyermans K Morreel C Lapierre B Pollet A De Bruyn R Busson P Herdewijn B Devreese J Van Beeumen J M Marita J Ralph C Chen B Burggraeve M Van Montagu E Messens W Boerjan

Caffeoyl-coenzyme A O-methyltransferase (CCoAOMT) methylates, in vitro, caffeoyl-CoA and 5-hydroxyferuloyl-CoA, two possible precursors in monolignol biosynthesis in vivo. To clarify the in vivo role of CCoAOMT in lignin biosynthesis, transgenic poplars with 10% residual CCoAOMT protein levels in the stem xylem were generated. Upon analysis of the xylem, the affected transgenic lines had a 12% ...

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