Comparison of the antioxidant content of fruits, vegetables and teas measured as vitamin C equivalents

Toit, René du; Volsteedt, Yolanda; Apostolides, Zeno

doi:10.1016/s0300-483x(01)00446-2

Cited by 125 publications

(82 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Following the procedures as described by Toit et al (2001) for each sample, a dilution series (8 dilutions) was prepared in a 96-well ELISA plate by adding distilled water as a dilution medium. Final concentrations of the samples ranged from 0.78 to 100 g/ml.…”

Section: Antioxidant Activities Of G Flanaganii Extract and Purifiedmentioning

confidence: 99%

“…The radical scavenging capacities of the samples were determined using a BIOTEK plate reader to measure the disappearance of DPPH at 550 nm. The radical scavenging activity was measured in terms of the amount of antioxidants necessary to decrease the initial DPPH absorbance by 50% (EC 50 ) (Toit et al 2001). The EC 50 value for each sample was determined graphically by plotting the absorbance of DPPH as a function of the sample concentration in g/ml.…”

Section: Antioxidant Activities Of G Flanaganii Extract and Purifiedmentioning

confidence: 99%

See 1 more Smart Citation

Tyrosinase activity of Greyia flanaganii (Bolus) constituents

et al. 2011

View full text Add to dashboard Cite

Section: Antioxidant Activities Of G Flanaganii Extract and Purifiedmentioning

confidence: 99%

Section: Antioxidant Activities Of G Flanaganii Extract and Purifiedmentioning

confidence: 99%

Tyrosinase activity of Greyia flanaganii (Bolus) constituents

et al. 2011

View full text Add to dashboard Cite

“…The method of du Toit et al (2001) was followed with some modifications. Briefly the samples were prepared as stock solutions of 10mg/mL.…”

Section: Antioxidant Activity -Dpph Radical Scavengingmentioning

confidence: 99%

In vitro chemo-preventative activity of Crotalaria agatiflora subspecies agatiflora Schweinf

Roux

Hussein

Lall

2011

Journal of Ethnopharmacology

View full text Add to dashboard Cite

Ethnopharmacological relevance: Crotalaria species have been widely used in Chinese traditional medicine to treat several types of internal cancers. Crotalaria agatiflora is used as a medicinal plant in several African countries for the treatment of bacterial and viral infections as well as for cancer. Materials and methods:Water and ethanol extracts of the leaves of C. agatiflora were evaluated for cytotoxcity on four cancerous and one noncancerous cell lines, using XTT (Sodium 3' -[1-(phenyl amino-carbonyl)-3,4-tetrazolium]-bis-[4-methoxy-6-nitro) benzene sulfonic acid hydrate) colorimetric assay. Antioxidant activity was determined using DPPH (1,1-Diphenyl-2-picryl hydrazyl). Light microscopy (eosin and hematozylin staining) and flow cytometry (Annexin-V and propidium iodide) were used to evaluate the mechanism of action of the ethanol extract and one of the isolated compounds. Results Conclusions:The results indicated that C. agatiflora possesses potential chemopreventative and therapeutic properties. The exact mechanism of action should still be determined in future studies.It is hypothesised that the ethanolic extract as well as madurensine induces autophagy, which in prolonged circumstances may lead to autophagic cell death.

show abstract

“…Some of antioxidant and antimicrobial agents of green tea could increase the life and efficiency of teeth (19)(20)(21). Tannins are biosynthetic materials which have a potent anti-bacterial effect.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the Effect of Green Tea Extract on Mouth Bacterial Activity in the Presence of Propylene Glycol

Moghbel

Farjzadeh

Aghel

et al. 2012

Jundishapur J Nat Pharm Prod

View full text Add to dashboard Cite

Background: Compounds present in green tea have proved to inhibit the growth and activity of bacteria associated with infections. Objectives: To assess the effects of green tea leaves extract in presence of propylene glycol on the aerobic mouth bacteria load. Materials and Methods: Saliva of 25 volunteer girl students aging 20-25 years were selected and evaluated by a mouthwash sample containing 1% tannin, as the most effective antibacterial complex in green tea. Comparative studies were also conducted between green tea mouthwashes containing 1% tannin and a similar sample with 10% propylene glycol added during extraction. This comparison was applied for a chlorhexidine 0.2% sample as a chemical mouthwash brand, too. Results: There was a meaningful difference between the green tea mouthwashes containing 10% propylene glycol and the simple green tea extract (P < 0.05). Significant difference was also seen between the herbal and chemical mouthwashes (P < 0.05). The extract 1% tannin containing 10% propylene glycol reduced the aerobic mouth bacterial load of the student salvia about 64 percent. The pH monotonousness in different days and temperatures approved the stability of tannin in liquid water medium. Conclusions: Using green tea extract as a herbal mouthwash is safe and harmless specially for children and pregnant women. This result led us to suppose that green tea may prevent plaque formation on teeth, coming over halitosis due to mouth infection, too. These effects need to be approved in an in vivo trial as a second study.

show abstract

Comparison of the antioxidant content of fruits, vegetables and teas measured as vitamin C equivalents

Cited by 125 publications

References 19 publications

Tyrosinase activity of Greyia flanaganii (Bolus) constituents

Tyrosinase activity of Greyia flanaganii (Bolus) constituents

In vitro chemo-preventative activity of Crotalaria agatiflora subspecies agatiflora Schweinf

Evaluation of the Effect of Green Tea Extract on Mouth Bacterial Activity in the Presence of Propylene Glycol

Contact Info

Product

Resources

About