scholarly journals Phytochemical contents and antioxidant activities of mangrove (Avicennia marina) leaves extract

2018 ◽  
Author(s):  
N. D. Takarina ◽  
G. A. F. Arif ◽  
S. A. Juhriah
Keyword(s):  
Antioxidant Activities ◽  
Avicennia Marina ◽  
Phytochemical Contents

Phytochemical Screening, Antimicrobial and Antioxidant Activities of Selected Mangrove Species

2020 ◽  
Vol 16 (2) ◽  
pp. 152-163 ◽  
Author(s):  
Nilesh L. Dahibhate ◽  
Utpal Roy ◽  
Kundan Kumar
Keyword(s):  
Staphylococcus Epidermidis ◽  
Methanol Extract ◽  
Ethyl Acetate Extract ◽  
Antioxidant Activities ◽  
Avicennia Marina ◽  
Total Flavonoids ◽  
Phytochemical Screening ◽  
Mangrove Species ◽  
Sonneratia Caseolaris ◽  
Bruguiera Gymnorhiza

Background: Mangrove plant extracts are used in folkloric medicine as aphrodisiac, sedative, antioxidant, antimicrobial and antimalarial. Screening for antimicrobial, phytochemical and antioxidant activities of fourteen mangroves plant species (Aegiceras corniculatum, Acanthus ilicifolius, Avicennia alba, Avicennia marina, Avicennia officinalis, Bruguiera cylindrica, Bruguiera gymnorhiza, Ceriops tagel, Excoecaria agallocha, Kandelia candel, Rhizophora apiculata, Rhizophora mucronata, Sonneratia alba, and Sonneratia caseolaris) in various solvents are reported in this work. Methods: The antimicrobial screening was carried out using agar well diffusion method. In this study, nine pathogenic strains were used, including three Gram-positive and six Gram-negative bacteria. Phytochemical screening, total flavonoids, total phenolic and antioxidant activity was tested by DPPH radical scavenging assay. Four phenolic compounds (gallic acid, vanillin, tannic acid and quercetin) were quantified by LC-MS/MS in selected mangrove species. Results: Antimicrobial screening showed Staphylococcus aureus, Staphylococcus epidermidis, Enterococcus faecalis and Pseudomonas aeruginosa were most susceptible to ethyl acetate extract as compared to ethanol and methanol extract. Ethyl acetate extract of Avicennia marina and Bruguiera gymnorhiza showed strong antibacterial activity against Staphylococcus aureus, Staphylococcus epidermidis, Enterococcus faecalis and Pseudomonas aeruginosa. Phytochemical analysis revealed the presence of saponins, phenolics, flavonoids, alkaloids, tannins, and terpenoids, which was found to be variable as per the solvent used for extraction. In addition, total phenolics and total flavonoids content with different solvents were found in the range of 11.08 to 196.76 mg GAE/g and 12.92 to 110.3 mg QE/g of extract respectively. Moreover, antioxidant capacities expressed in terms of IC50 (mg/mL) showed that methanol extract exhibited higher antioxidant capacity followed by ethanol extract. LC-MS/MS analysis showed gallic acid and tannic acid are present in higher concentration in Aegiceras corniculatum and Sonneratia caseolaris than other species. The vanillin and quercetin were found in the least concentration. Conclusion: Mangroves species are rich source of antioxidant, phenolics and antimicrobial compounds.

scholarly journals Ultrasonically-Extracted Marine Polysaccharides as Potential Green Antioxidant Alternatives

Proceedings ◽  
2020 ◽  
Vol 67 (1) ◽  
pp. 23
Author(s):  
Hanaa L. Essa ◽  
Hania A. Guirguis ◽  
Mayyada M. H. El-Sayed ◽  
Dalia Rifaat ◽  
Mohamed S. Abdelfattah
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Algal Species ◽  
Avicennia Marina ◽  
Ulva Lactuca ◽  
Biologically Active ◽  
Sulfated Polysaccharides ◽  
Total Phenolic ◽  
Sugar Substitutes ◽  
Pharmaceutical Industries

Marine-extracted sulfated polysaccharides (SPs) have been the subject of myriad research since they are considered an eco-friendly source of biologically active compounds. Meanwhile, food and pharmaceutical industries are urgently producing natural sugar substitutes and antioxidants as alternatives to synthetic ones which are associated with cytotoxicity and safety issues. This study assesses the potential of using marine SPs obtained via the ultrasonic-assisted extraction of different marine species, to utilize them as antioxidant sugar substitutes. The carbohydrate, total phenolic contents and antioxidant activities were measured for SP extracts of the algal species of Ulva lactuca, Jania rubens and the marine plant mangrove Avicennia marina. These SPs were structurally elucidated by Fourier Transform Infrared (FTIR) spectroscopic and high-performance liquid chromatography (HPLC) analyses. The results revealed that SPs’ highest yield percent was obtained from Ulva lactuca, 5.50 ± 0.25%. The SPs of Avicennia marina had the highest carbohydrate content, 44 ± 1% and antioxidant activity, 78.85 ± 0.06 at the 100 μg/mL concentration and 89.50 ± 0.21 at the 250 μg/mL concentration. Meanwhile, the highest phenolic content was exhibited by algal SPs obtained from Jania rubens, 132.60 ± 2.50 mgGa/g. Results also showed that all extracts have potent antioxidant activity, while the highest antioxidant activity belonged to the SPs of Avicennia marina owing possibly to their balanced glucose and galactose contents as measured by HPLC. This work emphasizes the need to consider sulfated polysaccharides from marine sources for their antioxidant activity and to correlate it with their monosaccharide content to determine the effect of reducing sugar concentration on the antioxidant activity.

scholarly journals Phytochemical contents and antioxidant activities of fern, Asplenium ceterach L. in different altitudes

2019 ◽  
Vol 48 (2) ◽  
pp. 315-320
Author(s):  
Asuman Karadeniz Pekgöz ◽  
Ilker Çinbilgel
Keyword(s):  
High Performance ◽  
Antioxidant Activities ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Ecological Factors ◽  
Total Phenolic ◽  
Plant Chemical ◽  
Dpph Radical Scavenging ◽  
Phytochemical Contents ◽  
Different Altitudes

Phytochemical contents and antioxidant activities of fern (Asplenium ceterach L.) distributed in different altitudes (22 stations) were compared and the relationships between altitude and plant chemical contents were studied. The highest 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity was found in 22nd station (IC50 = 47.91 μg/ml) and the highest total phenolic content was found in 9th station (110.62 μgGAE/ml) whereas the maximum total flavonoid content was found in 20th station (232.67 μgCE/ml). High performance liquid chromatography (HPLC) analysis indicates that the maximum pterosin b (0.235 μg/ml), catechin (2.756 μg/ml) and quercetin (0.207 μg/ml) values were found in 21th station whereas the maximum chlorogenic acid (17.718 μg/ml) was obtained in 9th and caffeic acid (6,598 μg/ml) in 13th stations. It was observed that altitude is not potent alone, but it can be a factor in the occurrence of other ecological factors like soil properties, water, humidity, light and temperature.

scholarly journals Abortifacient and Antioxidant Activities of Avicennia marina

2015 ◽  
Vol 33 ◽  
pp. 12-26
Author(s):  
Muppaneni Srikanth ◽  
Battu Ganga Rao ◽  
Mallikarjuna Rao Talluri ◽  
T. Rajananda Swamy
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Free Radicals ◽  
Plant Extracts ◽  
Antioxidant Activities ◽  
Avicennia Marina ◽  
Standard Drug ◽  
Hydroalcoholic Extract ◽  
Pure Compounds ◽  
Post Implantation

The current study was intended to evaluate abortifacient and antioxidant activity of Avicennia marina leaves extracts. Abortifacient activity was evaluated in rats, compared with standard drug (Mifepristone) and antioxidant activity was evaluated by using three free radicals (Superoxide, Hydroxyl and DPPH) compared with Ascorbic acid. The extracts were showed pre implantation loss, post implantation loss of implantations and decreased the survival ration of foetuses. Among all extracts hydroalcoholic extract showed better activity. The selected plant extracts showed concentration dependent percentage inhibition of free radicals. Among three extracts hydroalcoholic extract showed better activity with IC50 values on superoxide, hydroxyl and DPPH radicals were 203μg, 237μg and 143μg. From the results obtained during the study it the hydroalcoholic extract was used for the isolation of pure compounds, and isolated the different compounds (β-sitosterol, Lupeol and Betulinic acid).

scholarly journals Genotypic and Environmental Effect on the Concentration of Phytochemical Contents of Lentil (Lens culinaris L.)

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1154
Author(s):  
Maria Irakli ◽  
Anastasia Kargiotidou ◽  
Evangelia Tigka ◽  
Dimitrios Beslemes ◽  
Maria Fournomiti ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Environmental Effects ◽  
Environmental Effect ◽  
Antioxidant Activities ◽  
Genetic Material ◽  
Principal Component ◽  
Total Phenolic ◽  
Strong Impact ◽  
Antioxidant Power ◽  
Phytochemical Contents

The health-promoting effects of lentil seeds due to phenolic compounds and other antioxidants make lentils a potential source of functional food or feed ingredients. The objective of this study was to evaluate the effects of genotype and growing environment on the phytochemical contents and antioxidant activities such as ABTS (2′-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid), DPPH (2,2-diphenyl-1-picrylhydrazyl) and FRAP (ferric reducing antioxidant power) assays of soluble extracts from five lentil cultivars grown in ten diverse locations over a 2-year experimental period. Total phenolic content (TPC), total flavonoid content (TFC) , total proanthocyanidin content (TPAC), total hydrolyzed tannin content (TNC), tocopherols and carotenoids were investigated. The major proanthocyanidins and individual polyphenols were quantified by high-performance liquid chromatography. Our results indicated that flavanols were the main phenolic compounds in hydrophilic extracts, followed by phenolic acids. Concerning lipophilic extracts, tocopherols and carotenoids were the main components, with γ-tocopherol and lutein being the predominant isomers, respectively. In general, both genetic and environmental effects had a strong impact on all bioactive components tested. Greater variation due to environmental effects was found for phenolic compounds (TPC, TFC and TPAC) and antioxidant activities; however, tocopherols and carotenoids revealed a high genotypic dependence. The principal component analysis highlighted the genotypes with higher content of antioxidants and stability across environments. The red lentil population “03-24L” was characterized as a promising genetic material due to its high phenolic contents and antioxidant capacity values across environments and is suggested for further investigation. In conclusion, multi-environmental trials are essential for a better understanding of the genotypic and environmental effect on phytochemical profiles of lentils and provide important information for breeding or cultivating lentil varieties of high-bioactive value.

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