Constituents of Sideritis syriaca. ssp. syriaca (Lamiaceae) and their antioxidant activity

“…Many studies showed that many phytochemical compounds of herbs of the Mediterranean basin, gained the "food-borne anticarcinogens" title. These beneficial substances act as antioxidants and electrophile scavengers, stimulate the immune system, inhibit nitrosation and the formation of DNA adducts with carcinogens, induce phase I or II detoxification enzymes, act on intracellular signalling network molecules involved in the initiation and/or promotion of cancer, interrupting thus or reversing the carcinogenesis process (Bisset, 1994;Robbers et al, 1994;Cuvelier et al, 1994;Armata et al, 2008;Saddiqe et al, 2010;Lee et al, 2011).…”

Section: Mediterranean Herbs and Cancer Chemopreventionmentioning

confidence: 99%

“…Sideritis or "mountain tea" (Sideritis syriaca, Sideritis clandestina), Hypericum (Hypericum perforatum) and sage (Salvia officinalis L.) contain polyphenols (chlorogenic acid, apigenin, protocatechuic acid, caffeic acid, rosmaric acid, carnosol, qerqetin, luteolin, apigenin, p-coumaric acid, hypericine, geraniol, -pinene, -pinene) with anti-inflammatory and antioxidant properties (Saddiqe et al, 2010;Armata et al, 2008;Lu & Foo, 2001;Thorsen & Hildenbrandt, 2003). Carnosol has been evaluated for anti-cancer properties in prostate, breast, skin, leukemia, and colon cancer with promising results (Jonhson, 2011).…”

Section: Mediterranean Herbs and Cancer Chemopreventionmentioning

confidence: 99%

Chemopreventive Activity of Mediterranean Medicinal Plants

Kaliora¹,

Kountouri²

2012

Cancer Prevention - From Mechanisms to Translational Benefits

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“…The DPPH(purchased from Sigma Corp.) radical scavenging test was carried out following the method used in reference (Armata et al 2008). In brief, 2 mL of 0.2 mmol/ L ethanolic solution of DPPH ( freshly prepared daily) was mixed with 2 mL of various dilutions of the crude flavoinds extract.…”

Section: Determination Of Concentrations Of Flavonoidsmentioning

confidence: 99%

Analysis of conditions for microwave-assisted extraction of total water-soluble flavonoids from Perilla Frutescens leaves

Shao

Sun

et al. 2011

J Food Sci Technol

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Perilla Frutescens is a traditional Chinese medicinal herb. Microwave-assisted extraction (MAE) technique was developed for the fast extraction of flavonoids from Perilla Frutescens leaves. Several influential parameters of the MAE procedure (microwave power, extraction cycles, solvent to material ratio, irradiation time and pH value) were investigated for the optimization of the extraction using single factor and Box-Behnken experimental design. Response surface methodology analysis showed good correspondence between experimental and predicted values. It was found that the most effective parameter was solvent to material ratio, which was in good agreement with the experimental value. The adjusted coefficient of determination (Radj (2)) for the model was 93.45%. Probability value (P < 0.001) demonstrated a very high significance for the regression model. The maximum yield of flavonoids with MAE was obtained by dual extraction with solvent to material ratio of 1: 16.5, irradiation time of 23 min, and pH value of 8.4 at microwave power of 600 W. The optimal yield with MAE 6.07 mg/g were slightly lower than that of Soxhlet extracted and higher than that of heat reflux extraction with water. The extracts exhibited high scavenging effects on DPPH radical. With increasing concentration between 0.10 and 0.80 mg/mL, the scavenging rate achieved 62.3%.

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Constituents of Sideritis syriaca. ssp. syriaca (Lamiaceae) and their antioxidant activity

Cited by 44 publications

References 18 publications

Optimization of Microwave-assisted Extraction of Phenolic Compounds from “Anli” Pear (Pyrus ussuriensis Maxim)

Optimization of Microwave-assisted Extraction of Phenolic Compounds from “Anli” Pear (Pyrus ussuriensis Maxim)

Chemopreventive Activity of Mediterranean Medicinal Plants

Analysis of conditions for microwave-assisted extraction of total water-soluble flavonoids from Perilla Frutescens leaves

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