Total Phenols Content and Antioxidant Activity of Different Polarity Crude Extracts of Dodonaea Viscosa

Shoriqi, Maisa R.; Touby, Salem Said Al

doi:10.53879/id.58.08.11831

Cited by 4 publications

(1 citation statement)

References 17 publications

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“…Other chemical constituents such as α-cadinol, myristicin, δ-cadinene, and τ-muurolol are also detected in small concentrations (less than <1%) [29][30][31][32][33][34] . Total phenol content: In some reviewed studies, the total phenol content of the plant extracts with different polarities and concentrations was determined by spectroscopic method using Folin-Ciocalteu reagent (FCR) as described by several authors [35][36][37] . The gallic acid standard curve was used to calculate the total phenol contents expressed as mg gallic acid equivalents per gram of extract.…”

Section: Essential Oilmentioning

confidence: 99%

Review on Phytochemicals and Pharmacological Activities of Syzygium aromaticum

ALRASHDİ

2023

IEM

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Backgrounds: Syzygium aromaticum L (S. aromaticum, clove) is a plant species belonging to the Myrtaceae family. It is cultivated in many African and Asian countries. Folk medicine practitioners use different parts of this plant to treat gastrointestinal problems, diarrhea, dental pain, ulcer, and other chronic diseases. Experimental data on phytochemicals and pharmacological activities of this plant are scattered or unsystematic. Therefore, this review aimed to explore the available data on phytochemicals and pharmacological activities of S. aromaticum essential oil and extracts with various polarities. Materials & Methods:The literature review showed that only a few studies were conducted on this plant; consequently, there is not enough documented information about its bioactive phytochemicals and pharmacological activities. Findings: Most previous studies reviewed reported significant bioactive phytochemical contents, namely eugenol (49.7%), caryophyllene (18.9%), benzene, and 1-ethyl-3-nitro (11.1%), along with minor amounts of phytochemicals including carotenoids, gallic acid, flavonoids, oxalic acid, tannins, amino acids, fatty acids, and cyanidin glycoside. Sugars, coumarins, oleanolic acid, saponins, glycosides, and lipids were also identified in this species. The methanol extract of this plant and its different polar fractions were shown to exhibit significant antimicrobial, antioxidant, anti-allergic, antidiabetic, antihypertensive, antiinflammatory, antifungal, and anticancer activities. Furthermore, the plant extracts were also shown to have chemoprotective and hepatoprotective properties. Conclusion:This review provides comprehensive data on botanical aspects, phytochemicals, and pharmacological activities of this plant to researchers to explore traditional/ medicinal uses and commercial drug production from S. aromaticum.

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Section: Essential Oilmentioning

confidence: 99%

Review on Phytochemicals and Pharmacological Activities of Syzygium aromaticum

ALRASHDİ

2023

IEM

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Evaluation of bacteriostatic and antioxidant activities of various extracts from aerial part of Piper nigrum grown in Gulf countries traditionally used for the treatment of various infectious diseases

Alateeqi,

Al-Touby,

Hossain

2024

J.Umm Al-Qura Univ. Appll. Sci.

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Piper nigrum (P. nigrum) is a tropical medicinal plant widely available in Southeast Asian countries including Oman. In Asian It has a long history of usage in places such as Oman for treating of rheumatism, colds, and various infections. Based on the medicinal uses, the purpose of this research is to create diverse fractions using increasing solvent polarity from the aerial part of the collected plant species and evaluate their antibacterial and antioxidant activities by using established bioassays. The aerial part was collected from the Southern part of Oman and processed using the standard method. The processed materials were recovered using the maceration method using methanol, and the methanol raw extracts was further fractionated with water extraction, butanol, ethyl acetate (ETA), hexane, and dichloromethane are produced using different liquid polarities. Each of the six plant extracts was tested for antioxidant and antibacterial potential at different concentrations against DPPH (1, 1-diphenyl-2-picrylhydrazyl) and agar diffusion methods. All of the fractions at varied concentrations shown promising antioxidant activity with DPPH against the gallic acid. The maximum activity was observed in hexane extract, while the smallest potential was noticed in butanol extract, in the following order: hexane > chloroform > water > methanol > ethyl acetate > butanol extract. The antibacterial efficacy of six different polarities extracts gives moderate activity against two Gram-positive bacteria strains namely S. saprophyticus and S. aureus and three Gram-negative namely P. vulgaris, K. senegalensis and E. coli. Among the six extracts, hexane extract had the most antibacterial activity, whereas butanol extract had the smallest activity. The remaining four extracts, chloroform, ethyl acetate, methanol, and water, all had comparable activity. In conclusion, the extracts with the greatest activity from the chosen plant types might be employed as natural antioxidants to treat infectious disorders.

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