Comparative Assessment Of Total Phenolic Content In Selected Medicinal Plants

Johnson, Charles E.; Oladeinde, Frederick; Kinyua, A M; Michelin, R.; Makinde, J. M.; Jaiyesimi, A A; Mbiti, W N; Kamau, Geoffrey N.; Kofi-Tsekpo, W M; Pramanik, Sumit Kumar; Williams, Amy L.; Kennedy, Aileen; Bronner, Yvonne; Clarke, K.; Fofonoff, P; Nemerson, D

doi:10.4314/njnpm.v12i1.45664

Cited by 11 publications

(11 citation statements)

References 26 publications

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“…TPCs of the selected plant parts of ethanolic extracts were observed in the order: TB leaf>PA leaf> PA stem>TB stem>AP leaf>EP leaf>AP stem>CL leaf>BD leaf>TB bark> MP leaf>CL ripe rhizome> CL unripe rhizome. In a similar study, the total phenolic content of C. longa and E. prostrata were reported as 15.33 mg of GAE/g [24][25][26] which had lower values compared to our results. But in another study the total phenolics in C. longa was reported as 67.9 mg of GAE/100g [27] and 1.22 mg of GAE/100g [28], much lower than our values.…”

Section: Total Phenolic Contentcontrasting

confidence: 55%

Quantification and Evaluation of Antioxidant Activity of Some Bioactive Phytochemicals in Different Medicinal Plants

Singh¹,

Vishwakarma²,

Singh³

et al. 2012

TONUTRAJ

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Abstract:The present study was carried out to determine the concentration of some bioactive phytochemicals (ascorbic acid, carotenoids, total phenolics, protein and carbohydrate) and their antioxidant activity in the some medicinal plants. To screen out the plants, as well as their parts having higher antioxidant activities, all main parts of plants were screened. Out of thirteen plant samples, ethanolic leaf extract of T. belerica showed minimum IC 50 for free radical scavenging capacity (0.08 mg/ml), superoxide anion radical scavenging activity (0.39 mg/ml), lipid peroxidation (0.31 mg/ml) and ferric thiocyanate chelation activity (0.89 mg/ml) as well as high reducing power (0.31 ASE/ml) capacity. We can infer that the parts of plant having high content of phytochemicals may serve as a good source of nutraceuticals which have potential for use in health care formulations.

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Section: Total Phenolic Contentcontrasting

confidence: 55%

Quantification and Evaluation of Antioxidant Activity of Some Bioactive Phytochemicals in Different Medicinal Plants

Singh¹,

Vishwakarma²,

Singh³

et al. 2012

TONUTRAJ

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“…These previous findings corroborate the present results, in which HECLex presented low antioxidant capacity. Similar results were reported previously (Johnson et al, 2008) in which phenolic components of different plants and a crude extract of C. longa were evaluated, with values that were similar to the present study.…”

Section: Boletín Latinoamericano Y Del Caribe De Plantas Medicinales Y Aromáticas/ 62supporting

confidence: 92%

Influence of different preparation techniques on the composition and antioxidant action of curcumin and curcuminoids

Marchi¹,

Lívero²,

Soare³

et al. 2022

BLACPMA

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Epidemiological evidence indicates that plant antioxidants activity can treat or help to prevent the development of various diseases. One species with great potential as an antioxidant is Curcuma longa. However, different extraction techniques can influence isolated chemical compounds. This study investigated chemical composition and antioxidant activity of two rhizome extracts of C. longa: hydroethanolic, obtained by exhaustion (HECLex); and dried by a spray dryer (HECLsd). The phytochemical composition was evaluated by GC/MS. Antioxidant activity was evaluated using DPPH and FRAP assays. Total phenolic compounds and soil analyses were performed. The main components of HECLex were ar-turmerone, γ-curcumene, α-turmerone, and β-sesquiphellandrene. The main components of HECLsd were 9,12,15-octadecatrienoic acid, 2,3-bis([trimethylsilyl]oxy)propyl ester, verrucarol, and 1-monolinoleoylglycerol trimethylsilyl ether. HECLsd had significantly higher levels of phenolic compounds and higher antioxidant capacity compared with HECLex. In conclusion, processes of the preparation of C. longa rhizomes alter the chemical components and consequently their biological activity.

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“…Awoyinka et al (2007) mention that C. aconitifolius dried leaves were ground in a mortar and that the extraction was carried out with 96% ethanol for 3 h. The resulting solution was placed in a rotoevaporator at 30°C for 25 min, then placed in a drying oven at 45°C until a constant weight was reached. Johnson et al (2008) reported placing a mixture of 5 g of C. aconitifolius dried leaf in 40 ml of an ethanol/acetone/water/acetic acid solution (40:40:20:0.1 v/v), in a water bath at 60°C for 1 h. Mordi and Akanji (2012) mention that the air-dried powder from C. aconitifolius leaves (1 kg) of fresh matured C. aconitifolius were extracted by percolation at room temperature with 70% ethanol (EtOH). A leaf extract from C. aconitifolius was concentrated under reduced pressure (bath temperature 50°C) and finally defatted with nhexane.…”

Section: Aconitifoliusmentioning

confidence: 99%

Phenolic profile and antioxidant capacity of Cnidoscolus chayamansa and Cnidoscolus aconitifolius: A review

GuzmÃ¡n-Maldonado¹

2017

J. Med. Plants Res.

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Research into ancient cultures has yielded a large body of evidence on the use of medicinal plants for preventive and/or therapeutic purposes. Such plants may have many metabolic activities and functions in the body-antioxidant, anti-inflammatory, platelet aggregation inhibitory and immunological and they can act at different molecular levels. This work offers a comprehensive review of research into the phenolic profile and antioxidant capacity of a plant used since the pre-Columbian era, native to southeast Mexico, commonly known as "chaya". The most prevalent phytochemicals in this plant are its phenolic compounds, and their antioxidant capacity is responsible for many of its health benefits, specifically in controlling chronic diseases. In the chaya leaf, there is a general trend toward the presence of different phenolic groups, such as coumarin, flavonoids, phenols, tannins, anthraquinones and flobotanins in aqueous and alcoholic extracts. Aside from environmental factors, there are differences in the ways samples are treated before the extraction process, such as the treatment type and the drying conditions. There are also differences in the solvents used and in the methods of extraction and concentration of compounds. Finally, a diversity of techniques is used, and even the data are quantified and expressed differently. Chaya has great potential for production as food and as a medicinal plant, but much more research is needed on the composition of its leaf and the biological effects of its components.

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Comparative Assessment Of Total Phenolic Content In Selected Medicinal Plants

Cited by 11 publications

References 26 publications

Quantification and Evaluation of Antioxidant Activity of Some Bioactive Phytochemicals in Different Medicinal Plants

Quantification and Evaluation of Antioxidant Activity of Some Bioactive Phytochemicals in Different Medicinal Plants

Influence of different preparation techniques on the composition and antioxidant action of curcumin and curcuminoids

Phenolic profile and antioxidant capacity of Cnidoscolus chayamansa and Cnidoscolus aconitifolius: A review

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