In vitro antioxidant properties and FTIR analysis of two seaweeds of Gulf of Mannar

Selvaraju, M.; Umayaparvathi, S.; Muthuvel, A.; Balasubramanian, T.

doi:10.1016/s2221-1691(11)60126-3

Cited by 82 publications

(60 citation statements)

References 24 publications

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“…This suggests that phenolic compounds only serve a role in the scavenging of metallic ions and cannot represent the principal reducing agents of ferric ions (91,92). Furthermore, the reducing power of the different extracts assessed is potentially due to the presence in phenolic compounds of hydroxyl groups that may act as electron donors.…”

Section: Discussionmentioning

confidence: 99%

Antioxidant properties of the red alga Asparagopsis taxiformis collected on the North West Algerian coast

Mellouk

Benammar

Krouf

et al. 2017

Experimental and Therapeutic Medicine

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The aim of the present study was to evaluate the total phenolic and lipid content, fatty acids profiles and in vitro antioxidant activities of aqueous and solvent extracts of the red seaweed Asparagopsis taxiformis, through six different investigations. The present study demonstrated that phenol contents (mg gallic acid/g dry weight) were highest in the aqueous and methanolic extracts, followed by the ethanolic, hydroethanolic and hydromethanolic extracts. The lowest phenol contents were identified in the three remaining extracts: Butanolic, petroleum ether and acetone extracts. Furthermore, the total lipid content of the algae powder amounted to 2.85% of dry weight. The fatty acid methyl ester profiles analysed by gas-liquid chromatography represented indicated that fatty acids comprised 91.0±0.3% of total algae lipids. The saturated to unsaturated fatty acid contents amounted to 23.2±0.1 and 67.9±0.4% respectively. C13:0 (tridecanoate), C15:0 (pentadecanoate) and C17:0 (heptadecanoate) represented 47.4% of the total saturated fatty acids. Notably, the two most abundant unsaturated fatty acids, C15:1 (pentadecenoate) and C18:2 (octadecadienoate) represented 13.4 and 11.4% respectively, of the total unsaturated fatty acid content. Furthermore, the results of the antioxidant screening performed at 1.0 mg/ml, revealed that aqueous and methanolic extracts exhibited higher inhibition against superoxide and nitric oxide radicals and excellent radical scavenging activity [with half maximal inhibitory concentration (IC50) values 5.1 and 15.0 µg/ml, respectively], demonstrating improved antioxidant behavior when compared with standard ascorbic acid (which has an IC50 value of 3.7 µg/ml). Scavenging activity of the aqueous and methanolic extracts exhibited a strong peroxidation inhibition against linoleic acid emulsion system at a concentration of 300 µg/ml in comparison to the butylated hydroxyltoluene. Although all the studied extracts exhibited ferric reducing power, the aqueous and methanolic extracts had greater hydrogen donating ability. By contrast, hydromethanolic, ethanolic, hydroethanolic, butanolic, acetone and petroleum ether extracts exhibited weak antioxidant behavior. The antioxidant activity of potent seaweed species identified in the current study means that as well as being used as a functional food, they may be developed as novel pharmaceutical compounds and may be used as anti-ageing agents.

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Section: Discussionmentioning

confidence: 99%

Antioxidant properties of the red alga Asparagopsis taxiformis collected on the North West Algerian coast

Mellouk

Benammar

Krouf

et al. 2017

Experimental and Therapeutic Medicine

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“…A similar finding was reported earlier which showed the functional groups from bioactive compounds extracted from methanolic extracts of S. wightii and U. lactuca. 29 …”

Section: Purity Analysis By Hplcmentioning

confidence: 99%

GC-MS Metabolite Profiling, Antibacterial, Antidiabetic and Antioxidant Activities of Brown Seaweeds, Sargassum wightii Greville Ex J. Agardh, 1848 and Stoechospermum marginatum (C. Agardh) Kützing 1843

Deepak¹,

Josebin²,

Kasthuridevi³

et al. 2017

PTB Reports

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Objectives: The present study focuses on antibacterial, antidiabetic and antioxidant activities of methanolic extracts of brown seaweed Stoechospermum marginatum (SMME) and Sargassum wightii (SWME). Methods: The antibacterial activities of the seaweed extracts were determined by agar well diffusion method. Phytochemical, antioxidant and antidiabetic activity of the selected seaweed extracts were performed. Results: The phytochemical analysis of SMME and SWME has confirmed the presence of fixed oil, fat, tannin, flavonoids, alkaloids, steroids, phenol compounds, saponin etc. The SWME showed maximum activity against Staphylococcus aureus and minimum activity against Escherichia coli. And the SMME has shown moderate activity against S. aureus. The antidiabetic efficacy of SWME revealed the maximum effect with the inhibitory concentration value (IC 50 : 58.36 μg/mL) followed by SMME. The SWME has showed the highest scavenging property in all the tested assays (DPPH, FRAP and H 2 O 2 ) in relation to the control, ascorbic acid. The bioactive metabolites of the extracts were chemically characterized by FTIR and GCMS analyses. GC-MS analysis of SWME revealed the presence of a major chemical compound, hexadecenoic acid, methyl ester (13.35%) which might be responsible for the recorded activity. The FTIR spectrum analyses of crude extracts revealed the presence of alkyl halides, alkanes, amides, aromatics and carboxylic acids. Hence, the present study could form a base-line for the effective biomedical utilization of the seaweed, S. wightii.

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“…전세계적으로 약 6,000 종의 해조류가 알려져 있으며 [4], 약 150 여종의 해조류가 식품으로 이용되고 있다 [20]. 해조류는 고대부터 식품, 사료 및 비료 뿐만 아니라 의약품의 원료로써 사용되어 왔으며, 최근에 해조류의 항산화 및 항박테리아 활 성이 알려지면서 식품과 화장품을 위한 원료로 주목받고 있다 [5].…”

Section: 서 론unclassified

“…1, 2 (Fig. 4, 5 [20]. Tyrosinase 저해 활 성은 항산화제 존재하에서 L-lysine 또는 L-DOPA로부터 형성 된 dopachrome을 475 nm에서 측정하는 방법이다 [7].…”

Section: 서 론unclassified

Phenolic Content, DPPH Radical Scavenging, and Tyrosinase Inhibitory Activities of Ecklonia cava Extracted with the Ultrasonic Wave Method

김소정¹,

김동균²,

박종범³

et al. 2013

Journal of Life Science

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The applicability of the ultrasonic wave method to the extraction of useful components from seaweeds was investigated. Extracts from freeze-dried Ecklonia cava powder were prepared with hot water (65°C), water (24°C), 50% ethanol, and 100% ethanol, and ultrasonic extraction was also performed. The content of phenolic compounds and the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity and tyrosinase inhibitory activity of the extracts were analyzed, and differences in the data obtained by the ultrasonic extraction and the traditional extraction methods were compared. The phenolic content in the E. cava extract by ultrasonic extraction (142.80 mg/g) was approximately 14 times higher than the phenolic content in the hot water extract (10.03 mg/g). The DPPH radical scavenging and the tyrosinase inhibitory activities of the ultrasonic extract were approximately 4 times and 14 times higher than the hot water extracts, respectively. The correlation between the phenolic content and the DPPH radical scavenging activity (R2=99.47) and between the phenolic content and the tyrosinase inhibitory activity (R2=99.99) was very high. These results indicate that ultrasonic extraction is more suitable than traditional extraction for the extraction of useful components from E. cava.

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In vitro antioxidant properties and FTIR analysis of two seaweeds of Gulf of Mannar

Cited by 82 publications

References 24 publications

Antioxidant properties of the red alga Asparagopsis taxiformis collected on the North West Algerian coast

Antioxidant properties of the red alga Asparagopsis taxiformis collected on the North West Algerian coast

GC-MS Metabolite Profiling, Antibacterial, Antidiabetic and Antioxidant Activities of Brown Seaweeds, Sargassum wightii Greville Ex J. Agardh, 1848 and Stoechospermum marginatum (C. Agardh) Kützing 1843

Phenolic Content, DPPH Radical Scavenging, and Tyrosinase Inhibitory Activities of Ecklonia cava Extracted with the Ultrasonic Wave Method

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