scholarly journals Microtopographic refuges enhance recruitment and survival but inhibit growth of propagules of the tropical macroalga Sargassum swartzii

2019 ◽  
Vol 627 ◽  
pp. 61-70 ◽  
Author(s):  
Z Loffler ◽  
AS Hoey
Keyword(s):  
Sargassum Swartzii

scholarly journals Optimization of Microwave-Assisted Extraction of Phlorotannin From Sargassum swartzii (Turn.) C. Ag. With Ethanol/Water

2021 ◽  
Vol 16 (2) ◽  
pp. 1934578X2199618
Author(s):  
Tran Quoc Toan ◽  
Tran Duy Phong ◽  
Dam Duc Tien ◽  
Nguyen Manh Linh ◽  
Nguyen Thi Mai Anh ◽  
...  
Keyword(s):  
Output Power ◽  
Ethanol Concentration ◽  
Biological Activities ◽  
Solvent System ◽  
Extraction Process ◽  
Extraction Time ◽  
Brown Macroalgae ◽  
Experimental Conditions ◽  
Total Extract ◽  
Sargassum Swartzii

Sargassum is a genus of brown macroalgae in the class Phaeophyta, distributed widely in all oceans, including those of Vietnam. Species of this genus have been proven to possess diverse biological activities, such as antioxidant, anti-fungal, and anti-inflammatory, along with many benefits and applications for human health, including anti-diabetic, obesity, and thrombosis. These benefits arise from a diverse chemical composition, with compounds such as fucoidan, mannitol, and especially phlorotannin—a group of phenolic derivatives found predominantly in brown algae. In this study, we evaluated and optimized the factors that affected the extraction process of phlorotannins from Sargassum swartzii (Turn.) C. Ag., a common species of brown macroalgae in Vietnam. The process utilized ethanol and water as the solvent system, and the extraction process was assisted with the use of microwaves. To carry out optimization studies, Response Surface Methodology (RSM) was adopted according to a Central Composite Desisgn (CCD), taking four processing factors into consideration, ethanol concentration (%, v/v), extraction time (minutes), solvent/material ratio (v/w), and microwave output power (W) as independent variables. Phlorotannin concentration (mgPhE/g) and extract mass (mg) were regarded as optimization outcomes. Experimental conditions that produced the highest phlorotannin yield from 10 g of S. swartzii are as follows: Extraction time of 65 minutes, ethanol concentration of 52%, microwave output power of 613 W, and solvent/material ratio of 33/1 (v/w). These conditions corresponded to a phlorotannin concentration of 5.59 ± 0.11 mg PhE/g, and a total extract content of 27.88 ± 0.13 mg/g.

scholarly journals Sorption of copper ions by brown algae Sargassum swartzii

2015 ◽  
pp. 227-231
Author(s):  
Natalia G. Gabruk ◽  
◽  
Thi Lien Vu ◽  
Thi Duong Bui
Keyword(s):  
Brown Algae ◽  
Copper Ions ◽  
Sargassum Swartzii

Biosynthesis of gold nanoparticles using Sargassum swartzii and its cytotoxicity effect on HeLa cells

2014 ◽  
Vol 133 ◽  
pp. 102-106 ◽  
Author(s):  
T. Stalin Dhas ◽  
V. Ganesh Kumar ◽  
V. Karthick ◽  
K. Govindaraju ◽  
T. Shankara Narayana
Keyword(s):  
Gold Nanoparticles ◽  
Hela Cells ◽  
Sargassum Swartzii

scholarly journals Synergistic Effect of Trisodium citrate (TSC) on the Inhibition Efficiency of Sargassum swartzii (SS) -Zn2+ System on Mild Steel in Aqueous Environment

2020 ◽  
Vol 13 (4) ◽  
pp. 347-356
Author(s):  
S. Manimegalai
Keyword(s):  
Synergistic Effect ◽  
Mild Steel ◽  
Metal Surface ◽  
Inhibition Efficiency ◽  
Trisodium Citrate ◽  
Aqueous Environment ◽  
Corrosion Monitoring ◽  
Protective Film ◽  
Ft Ir ◽  
Sargassum Swartzii

The aquatic plant kingdom is a treasure of potential bioactive compounds. Aquatic plants contain some organic compounds that provide definite physiological actions on the human body. In the present study deals with the synergistic effect of Trisodium citrate (TSC)on the inhibition efficiency of methanolic extract of Sargassum swartzii (SS) and Zn2+ system on mild steel in aqueous environment. The corrosion monitoring techniques adopted in the study were weight-loss methods, electrochemical measurements, FT-IR and surface morphological techniques namely SEM and EDX. It has proved the formulation consisting of 100 ppm of Zn2+, 120 ppm of SS and 100 ppm of TSC has 95.77% IE. The high performance of SS - Zn 2+- TSC system could be due to synergistic effect that covers a wide surface coverage area on the metal surface and thus retarding the corrosion. Polarization study reveals that this formulation functions as a mixed inhibitor. AC impedance spectra suggest the presence of protective film on the metal surface. FT-IR spectra reveals that the protective film consists of Fe2+-SS complex, Fe2+-TSC complex and Zn (OH)2. SEM and EDX provide a pictorial representation on the nature of surface film in the absence and presence of inhibitors. Thus, it concluded that Sargassum swartzii - Zn 2+- TSC inhibitor system acted as a good inhibitor in aqueous medium.

Nanoscale zerovalent iron-Sargassum swartzii biocomposites for the removal of malachite green from an aqueous solution

2017 ◽  
Vol 52 (6) ◽  
pp. 965-974
Author(s):  
M. Jerold ◽  
E. V. Vidya ◽  
Ramya Sankar ◽  
Naveenji Arun ◽  
V. Sivasubramanian
Keyword(s):  
Aqueous Solution ◽  
Malachite Green ◽  
Zerovalent Iron ◽  
Nanoscale Zerovalent Iron ◽  
Sargassum Swartzii

scholarly journals Sargassum swartzii extracts ameliorate memory functions by neurochemical modulation in a rat model

2017 ◽  
Vol 26 (4) ◽  
pp. 1055-1062 ◽  
Author(s):  
Pirzada Jamal Ahmed Siddiqui ◽  
Adnan Khan ◽  
Nizam Uddin ◽  
Saima Khaliq ◽  
Munawwer Rasheed ◽  
...  
Keyword(s):  
Rat Model ◽  
Memory Functions ◽  
Sargassum Swartzii

Effect of biosynthesized gold nanoparticles by Sargassum swartzii in alloxan induced diabetic rats

2016 ◽  
Vol 95 ◽  
pp. 100-106 ◽  
Author(s):  
T. Stalin Dhas ◽  
V. Ganesh Kumar ◽  
V. Karthick ◽  
K. Vasanth ◽  
G. Singaravelu ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Diabetic Rats ◽  
Sargassum Swartzii
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