Flavonoids from leaves and exocarps of the grape Kyoho

Park, Hye‐Jeong; Cha, Hyeon-Cheol

doi:10.1080/12265071.2003.9647723

Cited by 27 publications

(19 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to Kosar et al (2007), Vitis vinifera vine leaves contain hydroxycinnamic acid derivatives (via caffeic and chlorogenic acids) and flavonoids (via quercetin and its derivatives) as the main compounds responsible for antioxidant activities, as previously reported (Park and Cha 2003). In a recent study (Monagas et al 2006), the chemical characterization of water and ethanolic extracts of Vitis vinifera leaves have been studied using HPLC method, and peonidin-3-O-glucoside, quercetin-3-O-lucuronide and quercetin-3-O-glucoside have been found as major components of the water extract.…”

Section: Resultsmentioning

confidence: 97%

Hepatoprotective, cardioprotective, and renal-protective effects of organic and conventional grapevine leaf extracts (Vitis labrusca var. Bordo) on Wistar rat tissues

Oliboni

Dani

Funchal³

et al. 2011

An. Acad. Bras. Ciênc.

View full text Add to dashboard Cite

The purpose of this study was to evaluate the beneficial effects of organic and conventional grapevine (Vitis labrusca L.) leaf extracts in reducing hydrogen peroxide-induced stress in the liver, heart and kidney of Wistar rats by measuring lipids and proteins damages (carbonyl assay), as well as the activity of the antioxidant enzymes superoxide dismutase and catalase. The preincubation with 5 mg/mL of organic and conventional grapevine (Vitis labrusca L.) leaf extracts prevented both lipids and proteins oxidative damages in all tissues analyzed. The organic leaf extract was able to restore superoxide dismutase (kidney and liver) and catalase (heart) activities, which were modified by the treatment with H 2 O 2 . The conventional extract was able to restore only the catalase activity in liver and heart tissues. The beneficial effects of the V. labrusca leaf extract shown in this study could probably be important for formulating dietary supplements, as well as for developing new ingredients with improved antioxidant properties from other plant sources.

show abstract

Section: Resultsmentioning

confidence: 97%

Hepatoprotective, cardioprotective, and renal-protective effects of organic and conventional grapevine leaf extracts (Vitis labrusca var. Bordo) on Wistar rat tissues

Oliboni

Dani

Funchal³

et al. 2011

An. Acad. Bras. Ciênc.

View full text Add to dashboard Cite

show abstract

“…The filtrates were pooled and concentrated to one-third their volume using Turbovap concentrator under a gentle stream of nitrogen. The sample extracts were treated with chloroform to remove chlorophyll, and residual aqueous extracts were washed away with ethyl acetate (Park and Cha, 2003). The extracts were filtered through 0.45 Mm filters and stored at 0°C until further analysis (Ju and Howard, 2003).…”

Section: Extraction Of Samplesmentioning

confidence: 99%

Physiological and Biochemical Characterisation of Grape Rootstocks

Satisha¹,

Ramteke²,

Karibasappa³

2016

SAJEV

View full text Add to dashboard Cite

Ten grape rootstocks were characterised for their various morphological, physiological and biochemical parameters. Significant differences were observed for most of the parameters studied. Rootstocks in the group of Vitis berlandierii × Vitis rupestris, such as 110 R, 1103 P, 99 R and B2-56, had a significantly higher content of total phenols, flavon-3-ols, flaveonoids, proline and total protein. Optimum C/N ratios in the mother vines of these rootstocks helped attain better rooting percentages of hardwood cuttings. Rootstocks such as Dog Ridge, 110 R, B2-56 and Salt Creek recorded the highest relative water content (RWC) and water-use efficiency (WUE) at single-leaf level, which is an important mechanism in overcoming drought tolerance. The high phenolic content in rootstocks such as Dog Ridge, 99 R, 110R and 1103 P may help in reducing the incidence of major grape diseases in commercial table varieties if grafted onto these rootstocks. This was established in our earlier studies of the incidence of powdery mildew in Thompson Seedless grafted onto different rootstocks. A significant and positive correlation was observed for WUE and total protein and proline content. Thus, the physio-biochemical characterisation of rootstocks may help to identify particular rootstocks that could influence a desired trait in commercial table / wine grape varieties after grafting.

show abstract

“…In addition to anthocyanins, hydroxycinnamic acids and stilbenes, grapes biosynthesize and accumulate the 3-O-, 7-O-, and 3 0 O-glucosides of many flavonols including quercetin, kaempferol, myricetin and isorhamnetin that may involve GTs, which have yet to be characterized. For example, recent studies (Park and Cha 2003) using spot densities of flavonoids separated by cellulose TLC combined with HPLC analysis identified Q3G as a major flavonoid in grape exocarps while Q3G and Q3G-7-O-glucuronide were the major flavonoids of grape leaves and isorhamnetin-3-O-G and kaempferol 3,7-O-G were found in minor quantities.…”

Section: Discussionmentioning

confidence: 98%

Molecular cloning and biochemical characterization of three Concord grape (Vitis labrusca) flavonol 7-O-glucosyltransferases

Hall

Kim

Luca

2011

Planta

View full text Add to dashboard Cite

Grapes berries produce and accumulate many reactive secondary metabolites, and encounter a wide range of pathogen- and human-derived xenobiotic compounds. The enzymatic glucosylation of these metabolites changes their reactivity, stability and subcellular location. Two ESTs with more than 90% nucleotide sequence identity to three full-length glucosyltransferases are expressed in several grape tissues. The full-length clones have more than 60% amino acid sequence similarity to previously characterized flavonoid 7-O-glucosyltransferases, catechin O-glucosyltransferases and anthocyanin 5-O-glucosyltransferases. In vitro, these enzymes glucosylate flavonols and the xenobiotic 2,4,5-trichlorophenol (TCP). Kinetic analysis indicates that TCP is the preferred substrate for these enzymes, while expression analysis reveals variable transcription of these genes in grape leaves, flowers and berry tissues. The in vivo role of these Vitis labrusca glucosyltransferases is discussed.

show abstract

Flavonoids from leaves and exocarps of the grape Kyoho

Cited by 27 publications

References 19 publications

Hepatoprotective, cardioprotective, and renal-protective effects of organic and conventional grapevine leaf extracts (Vitis labrusca var. Bordo) on Wistar rat tissues

Hepatoprotective, cardioprotective, and renal-protective effects of organic and conventional grapevine leaf extracts (Vitis labrusca var. Bordo) on Wistar rat tissues

Physiological and Biochemical Characterisation of Grape Rootstocks

Molecular cloning and biochemical characterization of three Concord grape (Vitis labrusca) flavonol 7-O-glucosyltransferases

Contact Info

Product

Resources

About