Total Phenolics Levels and Antioxidant Properties in Methanol Extracts from Several Vietnamese Wild Plants

Boo, Hee-Ock; Kim, Tae-Soon; Koshio, Kaihei; Shin, Jeoung-Hwa; Chon, Sang‐Uk

doi:10.7732/kjpr.2011.24.6.659

Cited by 2 publications

(2 citation statements)

References 24 publications

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“…1e ). Our findings of no significant relationship between flavonoid content and scavenger activity using the ABTS assay is consistent with other investigators’ results [ 30 ]. By contrast, total phenolic content of the plant preparation positively correlated with scavenger activity measured by both assays (Fig.…”

Section: Discussionsupporting

confidence: 94%

Thai plants with high antioxidant levels, free radical scavenging activity, anti-tyrosinase and anti-collagenase activity

Chatatikun

Chiabchalard

2017

BMC Complement Altern Med

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BackgroundUltraviolet radiation from sunlight induces overproduction of reactive oxygen species (ROS) resulting in skin photoaging and hyperpigmentation disorders. Novel whitening and anti-wrinkle compounds from natural products have recently become of increasing interest. The purpose of this study was to find products that reduce ROS in 14 Thai plant extracts.MethodsTo determine total phenolic and flavonoid content, antioxidant activity, anti-tyrosinase activity and anti-collagenase activity, we compared extracts of 14 Thai plants prepared using different solvents (petroleum ether, dichloromethane and ethanol). Antioxidant activities were determined by DPPH and ABTS assays.ResultsTotal phenolic content of the 14 Thai plants extracts was found at the highest levels in ethanol followed by dichloromethane and petroleum ether extracts, respectively, while flavonoid content was normally found in the dichloromethane fraction. Scavenging activity ranged from 7 to 99% scavenging as assessed by DPPH and ABTS assays. The ethanol leaf extract of Ardisia elliptica Thunb. had the highest phenolic content, antioxidant activity and collagenase inhibition, while Cassia alata (L.) Roxb. extract had the richest flavonoid content. Interestingly, three plants extracts, which were the ethanolic fractions of Annona squamosa L., Ardisia elliptica Thunb. and Senna alata (L.) Roxb., had high antioxidant content and activity, and significantly inhibited both tyrosinase and collagenase.ConclusionOur finding show that the ethanol fractions of Annona squamosa L., Ardisia elliptica Thunb. and Senna alata (L.) Roxb. show promise as potential ingredients for cosmetic products such as anti-wrinkle agents and skin whitening products.

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Section: Discussionsupporting

confidence: 94%

Thai plants with high antioxidant levels, free radical scavenging activity, anti-tyrosinase and anti-collagenase activity

Chatatikun

Chiabchalard

2017

BMC Complement Altern Med

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“…The methanolic extract of leaves of Sphaeranthus africanus shows the presence of total phenolic contents and showed dose-dependent DPPH radical scavenging activity 30 .…”

Section: Mahashravani (S Africanus Linn)mentioning

confidence: 99%

Antioxidant Activity of Madhuraprabhava Drugs Delineated in Madhuraskandha of Charaka's Materia Medica

Bhuvad¹,

Nishteswar²

2014

J Biol Sci Opin

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Acharya Charaka had mentioned Madhuraskandha in the context of Asthapana Basti dravya. There are total 85 drugs mentioned in the Madhuraskandha. The drugs included in Madhuraskandha usually possess Madhurarasa or Madhuravipaka and Madhuraprabhava. Madhuraprabhava is the phenomenon in which the drug shows the action attributed to Madhurarasa or Madhuravipaka though it does not contain either of them. In Madhuraskandha, there are in total 25 drugs which exercise their action through Madhuraprabhava. In Ayurvedic pharmacology, Prabhava is referred as inexplicable principle. But, basing upon the active constituents of the medicinal plants their respective activities can be explained. The active constituents of plants have been recently isolated. They have been divided into16 main groups viz. alkaloids, anthocyanin, anthraquinones, glycosides, minerals etc. The active constituents in plants are the chemicals that have a medicinal effect on the body. Rasayana dravyas mainly possess Madhurarasa. The Rasayana activity (antioxidant activity one of the indices of Rasayana Karma) is well explained in the light of presence of phenol compounds, triterpenoids, flavonoids, gallic acids etc. In the present study, the anti-oxidant activity of the Madhuraskandha dravyas who act through their Madhuraprabhava can be explained by the presence of terpenoid, flavonoids and total phenol content etc. A review of such reported researches have been made to explain the activities of drugs having Madhuraprabhava.

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Total Phenolics Levels and Antioxidant Properties in Methanol Extracts from Several Vietnamese Wild Plants

Cited by 2 publications

References 24 publications

Thai plants with high antioxidant levels, free radical scavenging activity, anti-tyrosinase and anti-collagenase activity

Thai plants with high antioxidant levels, free radical scavenging activity, anti-tyrosinase and anti-collagenase activity

Antioxidant Activity of Madhuraprabhava Drugs Delineated in Madhuraskandha of Charaka's Materia Medica

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