Antioxidant activity, α-amylase and α-glucosidase inhibition properties of sulfated-polysaccharides purified from freshwater plant Myriophyllum spicatum L.

Приведена характеристика альгоценозов обрастаний каменистых субстратов и макрофитов среднего течения р. Сылва. Проанализированы многолетние (1992-2012 гг.) изменения альгофоры перифитона. Показано, что видовой состав, численность и биомасса фитоперифитона зависят от гидролого-гидрохимических условий в местах отбора проб. Для эпифитона и от морфо-физиологических особенностей субстрата-макрофита: погруженные Potamogeton lucens L., P. perfoliatus L., P. gramineus L. и P. pectinatus L., Myriophyllum spicatum L. и полупогруженные Nuphar lutea (L.) Smith, Petasites hybridus (L.) Gaertn., Mey. et Sxherb., Equisetum fluviatile (L.).

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Microwave Assisted Extraction and Pressurized Liquid Extraction of Sulfated Polysaccharides from Fucus virsoides and Cystoseira barbata

Foods ◽

10.3390/foods10071481 ◽

2021 ◽

Vol 10 (7) ◽

pp. 1481

Author(s):

Ana Dobrinčić ◽

Sandra Pedisić ◽

Zoran Zorić ◽

Mladenka Jurin ◽

Marin Roje ◽

...

Keyword(s):

Antioxidant Activity ◽

Chemical Composition ◽

Liquid Extraction ◽

Pressurized Liquid Extraction ◽

Sulfate Group ◽

Sulfated Polysaccharides ◽

Microwave Assisted Extraction ◽

Microwave Assisted ◽

Assisted Extraction ◽

Cystoseira Barbata

Sulfated polysaccharide fucoidan isolated from brown algae shows a wide range of biological activities that are significantly dependent on its chemical composition, which is closely related to the applied technique and extraction parameters. Therefore, the objective of this study was to evaluate the influence of microwave assisted extraction (MAE) and pressurized liquid extraction (PLE) parameters (solvent, temperature, time, and number of cycles) on the Fucus virsoides and Cystoseira barbata polysaccharide yield (%PS) and chemical composition (total sugar, fucose, and sulfate group). The optimal MAE parameters that resulted in the highest polysaccharide extraction from F. virsoides and C. barbata were 0.1 M H2SO4 for 10 min at 80 °C, while the optimal PLE parameters were 0.1 M H2SO4, for two cycles of 15 min at 140 °C. Furthermore, the %PS, chemical structure, molecular properties, and antioxidant activity of the F. virsoides and C. barbata polysaccharide extracts obtained with MAE, PLE, and conventional extraction (CE) performed under previously determinate optimal conditions were compared. PLE resulted in a significantly higher %PS from F. virsoides, while for C. barbata, a similar yield was achieved with CE and PLE, as well as CE and MAE, for both algae. Furthermore, the polysaccharides obtained using PLE had the highest polydispersity index, fucose, and sulfate group content, and the lowest uronic acid content; however their antioxidant activity was lower.

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Sorption of Co, Cu, Ni and Zn from industrial effluents by the submerged aquatic macrophyte Myriophyllum spicatum L.

Ecological Engineering ◽

10.1016/j.ecoleng.2007.04.007 ◽

2007 ◽

Vol 30 (4) ◽

pp. 320-325 ◽

Cited By ~ 67

Author(s):

E. Lesage ◽

C. Mundia ◽

D.P.L. Rousseau ◽

A.M.K. Van de Moortel ◽

G. Du Laing ◽

...

Keyword(s):

Aquatic Macrophyte ◽

Myriophyllum Spicatum ◽

Industrial Effluents ◽

Myriophyllum Spicatum L

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Ultrasonically-Extracted Marine Polysaccharides as Potential Green Antioxidant Alternatives

Proceedings ◽

10.3390/asec2020-07606 ◽

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.

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