Assessment of the antioxidant and antibacterial properties of red algae (Rhodophyta) from the north coast of Tunisia

Hmani, Imen; Ktari, L.; Ismail, Amel; M’dallel, Cheima; Bour, Monia El

doi:10.1007/s41207-020-00222-7

Cited by 15 publications

(8 citation statements)

References 29 publications

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“…Although several studies have revealed the high TPC and total flavonoid content of A. taxiformis extract and the close relationship between them and the bioactivity (antioxidant, anti-inflammatory, and antiproliferative activities) ( 2 , 5 ), the phenolic profile of A. taxiformis remains unknown. Asparagopsis armata , the sister species of A. taxiformis , has also shown strong antioxidant and antimicrobial activities together with high TPC and total flavonoid content ( 32 , 33 ); however, studies focusing on its phenolic profile remain scarce. Notably, phenolic compounds have been reported in red, brown, and green algae ( 6 , 30 ).…”

Section: Resultsmentioning

confidence: 99%

“…Asparagopsis armata, the sister species of A. taxiformis, has also shown strong antioxidant and antimicrobial activities together with high TPC and total flavonoid content (32,33); however, studies focusing on its phenolic profile remain scarce. Notably, phenolic compounds have been reported in red, brown, and green algae (6,30).…”

Section: Characterization Of Phenolics Using Uhplc-msmentioning

confidence: 99%

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Optimization of ultrasound-assisted extraction of phenolics from Asparagopsis taxiformis with deep eutectic solvent and their characterization by ultra-high-performance liquid chromatography-mass spectrometry

et al. 2022

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Asparagopsis taxiformis is a significant source of phenolics. Owing to the incessant demand of green extraction procedures for phenolics from A. taxiformis, ultrasound-assisted extraction (UAE) using deep eutectic solvents (DESs) was optimized. Among the tested DESs, betaine-levulinic acid afforded the highest total phenolic content (TPC). Moreover, the optimal extraction conditions elucidated from single-factor and response surface methodologies comprised a 52.41°C ultrasonic temperature, 46.48% water content of DES, and 26.99 ml/g liquid-to-solid ratio. The corresponding TPC (56.27 mg GAE/100 g DW) and antioxidant ability fitted the predicted values. UAE afforded superior TPC and antioxidant abilities with DESs than with traditional solvents. Using UHPLC-MS, seven phenolic acids, 18 flavonoids, and two bromophenols were identified and quantified. DES-UAE afforded the highest phenolic compound number (26) and sum of contents. These results disclose the high extraction efficiency of DES-UAE for A. taxiformis phenolics and provide a basis for the higher-value application of this species.

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Section: Resultsmentioning

confidence: 99%

Section: Characterization Of Phenolics Using Uhplc-msmentioning

confidence: 99%

Optimization of ultrasound-assisted extraction of phenolics from Asparagopsis taxiformis with deep eutectic solvent and their characterization by ultra-high-performance liquid chromatography-mass spectrometry

et al. 2022

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“…Moreover, the results of El Nur et al [83] indicated that the ethanol extract of Jania rubens (Rhodophyta) (Figure 5e) exhibited the most potent antioxidant crude extract with 86%. Likewise, The investigation revealed that the methanolic extract of the red alga Pterocladiella capillacea (Figure 5f) possesses large amounts of total polyphenols, which are responsible for its antioxidant potential [84]. Moreover, the methanolic extract of Chondrus crispus (Rhodophyta) (Figure 5g), obtained from the Red sea, was found to contain several flavonoids, polyphenols and tannins which displayed remarkable antioxidant activity [85].…”

Section: Antioxidant and Antihyperglycemic Activity Of Algaementioning

confidence: 97%

Antioxidant and Antidiabetic Activity of Algae

Abo-Shady¹,

Gheda²,

Ismail³

et al. 2022

Preprint

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Currently, algae arouse a growing interest in the pharmaceutical and cosmetic area due to the fact that they have a great diversity of bioactive compounds with the potential for pharmacological, cosmetic, and nutraceutical applications. Many of these bioactive compounds are secondary metabolites whose amounts in the algae vary with varying environmental conditions. Free radicals and other active oxygen derivatives are recognized as a natural by-product of aerobic metabolism. However, reactive oxygen species directly participate in mechanisms related to various pathological states such as cancer, diabetes, atherosclerosis, Alzheimer's, and Parkinson's, among others. Diabetes mellitus (DM) is a metabolic disease resulting from changes in glucose metabolism and/or deficient production/action of insulin. This review has as its main objective to reveal the potential antioxidant and antidiabetic capacity of algae extracts.

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“…Moreover, the results of El Nur et al [ 82 ] indicated that the ethanol crude extract of Jania rubens (Rhodophyta) ( Figure 5 e) exhibited the most potent antioxidant activity of 86% using DPPH assay. Likewise, the methanolic extract of Pterocladiella capillacea red alga ( Figure 5 f) possessed a large amount of total polyphenols, which was responsible for its elevated antioxidant potential [ 83 ]. Moreover, the methanolic extract of Chondrus crispus (Rhodophyta) ( Figure 5 g), obtained from the Red Sea, was found to contain several flavonoids, polyphenols, and tannins compounds, which displayed remarkable antioxidant activity [ 84 ].…”

Section: Treatment Of Diabetesmentioning

confidence: 99%

Antioxidant and Antidiabetic Activity of Algae

Abo-Shady

Gheda

Ismail

et al. 2023

Life

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Currently, algae arouse a growing interest in the pharmaceutical and cosmetic area due to the fact that they have a great diversity of bioactive compounds with the potential for pharmacological and nutraceutical applications. Due to lifestyle modifications brought on by rapid urbanization, diabetes mellitus, a metabolic illness, is the third largest cause of death globally. The hunt for an efficient natural-based antidiabetic therapy is crucial to battling diabetes and the associated consequences due to the unfavorable side effects of currently available antidiabetic medications. Finding the possible advantages of algae for the control of diabetes is crucial for the creation of natural drugs. Many of algae’s metabolic processes produce bioactive secondary metabolites, which give algae their diverse chemical and biological features. Numerous studies have demonstrated the antioxidant and antidiabetic benefits of algae, mostly by blocking carbohydrate hydrolyzing enzyme activity, such as α-amylase and α-glucosidase. Additionally, bioactive components from algae can lessen diabetic symptoms in vivo. Therefore, the current review concentrates on the role of various secondary bioactive substances found naturally in algae and their potential as antioxidants and antidiabetic materials, as well as the urgent need to apply these substances in the pharmaceutical industry.

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Assessment of the antioxidant and antibacterial properties of red algae (Rhodophyta) from the north coast of Tunisia

Cited by 15 publications

References 29 publications

Optimization of ultrasound-assisted extraction of phenolics from Asparagopsis taxiformis with deep eutectic solvent and their characterization by ultra-high-performance liquid chromatography-mass spectrometry

Optimization of ultrasound-assisted extraction of phenolics from Asparagopsis taxiformis with deep eutectic solvent and their characterization by ultra-high-performance liquid chromatography-mass spectrometry

Antioxidant and Antidiabetic Activity of Algae

Antioxidant and Antidiabetic Activity of Algae

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