Scavenging effect of extracts of green tea and natural antioxidants on active oxygen radicals

Zhao, Baolu; Li, Xiaojie; He, Ronghai; Cheng, Shujun; Xin, Wenjuan

doi:10.1007/bf02797132

Cited by 296 publications

(148 citation statements)

References 4 publications

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“…Later, this range was updated to (7.8-10.4 × 5.2-6.4) µm cum myxosp. (Zhao et al 1989, Zhao andZhang 2000) and (9-11.5 × 6.5-8) µm cum myxosp. (Wang et al 2012).…”

Section: Discussionmentioning

confidence: 99%

Ganoderma sichuanense (Ganodermataceae, Polyporales) new to Thailand

Thawthong¹,

Hapuarachchi²,

Wen³

et al. 2017

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Ganoderma sichuanense (Ganodermataceae) is a medicinal mushroom originally described from China and previously confused with G. lucidum. It has been widely used as traditional medicine in Asia since it has potential nutritional and therapeutic values. We collected 8 specimens of Ganoderma species from Thailand and show that they represent the first record of G. sichuanenese for Thailand. In this paper, we describe our specimens of Ganoderma sichuanense based on fresh basidiomes, and provide line drawings and photographs. The data from macro-and microscopic features are consistent with the characteristics of the species. Analysis of ITS sequence data indicates that the Thai collections cluster in same species clade as the epitype of G. sichuanense.

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“…Later, this range was updated to (7.8-10.4 × 5.2-6.4) µm cum myxosp. (Zhao et al 1989, Zhao andZhang 2000) and (9-11.5 × 6.5-8) µm cum myxosp. (Wang et al 2012).…”

Section: Discussionmentioning

confidence: 99%

Ganoderma sichuanense (Ganodermataceae, Polyporales) new to Thailand

Thawthong¹,

Hapuarachchi²,

Wen³

et al. 2017

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“…The ROSscavenging effects of EGCG were superior to those of ascorbic acid and α-tocopherol in many cases [14]. Besides, the pyrogallol structure of EGCG also confers the molecule with strong metal-chelating ability.…”

Section: Inhibition Of the Cancer Initiation Stage By Egcgmentioning

confidence: 98%

Cancer Preventive Mechanismsof the Green Tea Polyphenol (-)-Epigallocatechin-3-gallate

2007

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Accumulating evidence indicates that consumption of tea, especially green tea, is good for preventing cancer. To elucidate the cancer preventive mechanisms of green tea, much effort has been devoted to investigating the anticancer effects of (-)-epigallocatechin-3-gallate (EGCG), the major component of green tea. It has been revealed that EGCG restrained carcinogenesis in a variety of tissues through inhibition of mitogen-activated protein kinases (MAPK), growth factor-related cell signaling, activation of activator protein 1 (AP-1) and nuclear factor-B (NF-κB), topoisomerase I, matrix metalloproteinases and other potential targets. Therefore, EGCG is a multipotent anticancer agent, which not only provides solid evidence to support the anticancer potential of green tea, but also offers new clues for discovering multiple-targeted anticancer drugs.

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“…The resultant DM-PO-OH adducts were investigated and the ESR spectrum was recorded after 2.5 min. The measurement conditions were as follows: central field, 3475 G; modulation width, 0.2 mT; amplitude, 100 mT; microwave power, 1 mW; sweep width, 10 mT; and temperature, 298 K. Superoxide radicals were generated by ultraviolet (UV) irradiation of a riboflavin/EDTA solution and their scavenging abilities were investigated using the method of Zhao et al (1989). The reaction mixture containing 0.8 mM riboflavin, 1.6 mM EDTA, 800 mM DMPO, and samples was irradiated for 1 min under a UV lamp at 365 nm.…”

Section: Protection Factormentioning

confidence: 99%

Fractionation and Characterization of Fractions with High Antioxidative Activity from the Gelatin Hydrolysates of Korean Rockfish Sebastes schlegelii Skin

Park¹,

Shin²,

Lee³

et al. 2011

Fisheries and aquatic sciences

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The purpose of this study was to obtain a fraction with high antioxidative activity from second rockfish gelatin hydrolysates (SRSGHs), which were hydrolyzed with Alcalase and Flavourzyme through ultrafiltration membranes with serial digestions for 1 and 2 h, respectively, and to investigate the feasibility of this fraction as a potential functional food ingredient. Among various fractions that were ultrafiltered from the SRSGH with four types of membrane (1, 5, 10, and 30 kDa), the SRSGH-III fraction, which permeated the 10 kDa membrane but not the 5 kDa membrane, showed the highest antioxidant activity (protection factor=5.13) and angiotensin-I-converting enzyme-inhibiting activity (IC 50 =0.82 mg/mL). These results suggest that the SRSGH-III fraction from the SRSGH can be used as a functional food ingredient. However, further studies examining its antioxidant activity in vivo as well as the different antioxidant mechanisms are needed.

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Scavenging effect of extracts of green tea and natural antioxidants on active oxygen radicals

Cited by 296 publications

References 4 publications

Ganoderma sichuanense (Ganodermataceae, Polyporales) new to Thailand

Ganoderma sichuanense (Ganodermataceae, Polyporales) new to Thailand

Cancer Preventive Mechanismsof the Green Tea Polyphenol (-)-Epigallocatechin-3-gallate

Fractionation and Characterization of Fractions with High Antioxidative Activity from the Gelatin Hydrolysates of Korean Rockfish Sebastes schlegelii Skin

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