scholarly journals Extraction and Characterization of Alginate from an Edible Brown Seaweed (Cystoseira barbata) Harvested in the Romanian Black Sea

Marine Drugs ◽  
2019 ◽  
Vol 17 (7) ◽  
pp. 405 ◽  
Author(s):  
Trica ◽  
Delattre ◽  
Gros ◽  
Ursu ◽  
Dobre ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Black Sea ◽  
Brown Seaweed ◽  
Structural Data ◽  
Alginate Beads ◽  
The Black Sea ◽  
Cystoseira Barbata ◽  
Sea Area ◽  
G Ratio

Cystoseira barbata is an edible brown seaweed, traditionally used in the Black Sea area as functional food. Both alginate and brown seaweed biomass are well known for their potential use as adsorbents for heavy metals. Alginate was extracted from C. barbata recovered from the Romanian coast on the Black Sea with a yield of 19 ± 1.5% (w/w). The structural data for the polysaccharide was obtained by HPSEC-MALS, 1H-NMR. The M/G ratio was determined to be 0.64 with a molecular weight of 126.6 kDa with an intrinsic viscosity of 406.2 mL/g. Alginate beads were used and their adsorption capacity with respect to Pb2+ and Cu2+ ions was determined. The adsorption kinetics of C. barbata dry biomass was evaluated and it was shown to have an adsorption capacity of 279.2 ± 7.5 mg/g with respect to Pb2+, and 69.3 ± 2 with respect to Cu2+. Alginate in the form of beads adsorbs a maximum of 454 ± 4.7 mg/g of Pb2+ ions and 107.3 ± 1.7 mg/g of Cu2+ ions.

COMPONENT COMPOSITION AND ANTIOXIDANT POTENTIAL OF CYSTOSEIRA BARBATA FROM THE BLACK SEA

2021 ◽  
Vol 14(63) (1) ◽  
pp. 163-172
Author(s):  
Zdravko Kr. MANEV ◽  
Nadezhda Tr. PETKOVA
Keyword(s):  
Black Sea ◽  
Chemical Elements ◽  
Brown Seaweed ◽  
Component Composition ◽  
Antioxidant Potential ◽  
The Black Sea ◽  
Total Phenols ◽  
High Concentration ◽  
Cystoseira Barbata ◽  
Manganese Chromium

The purpose of this study was to analyze some chemical elements and to determine the content of total phenols and pigments in the brown seaweed Cystoseira barbata from Rusalka Cape near the Black Sea. In addition, the antioxidant potential of this algae was also evaluated by four methods based on different mechanisms. The obtained results were compared with other scientific studies related to inorganic and organized compositions of Cystoseira barbata from different marine regions.It was found that the seaweed from Rusalka Cape contained high values of manganese, chromium and boron and a high concentration of carotenoids. Therefore, this seaweed was evaluated as a source of microelements, carotenoids and antioxidants.

Identification and Morphological-Physiological Characterization of Astaxanthin Producer Strains of Haematococcus pluvialis from the Black Sea Region

2018 ◽  
Vol 54 (6) ◽  
pp. 639-648
Author(s):  
E. S. Chelebieva ◽  
N. V. Dantsyuk ◽  
K. A. Chekanov ◽  
I. N. Chubchikova ◽  
I. V. Drobetskaya ◽  
...  
Keyword(s):  
Black Sea ◽  
Haematococcus Pluvialis ◽  
The Black Sea ◽  
Black Sea Region ◽  
Physiological Characterization ◽  
Producer Strains

scholarly journals An operational implementation of the GHER model for the Black Sea, with SST and CTD data assimilation

2009 ◽  
Vol 6 (2) ◽  
pp. 1895-1911 ◽  
Author(s):  
L. Vandenbulcke ◽  
A. Capet ◽  
J. M. Beckers ◽  
M. Grégoire ◽  
S. Besiktepe
Keyword(s):  
Black Sea ◽  
Initial Conditions ◽  
Sea Surface ◽  
The Black Sea ◽  
Marmara Sea ◽  
Reduced Rank ◽  
Data Transfers ◽  
Time Required ◽  
Assimilation Scheme

Abstract. In this article, we describe the first operational implementation of the GHER hydrodynamic model. This happened onboard the research vessel "Alliance", in the context of the Turkish Straits System 2008 campaign, which aimed at the real-time characterization of the Marmara Sea and (south-western) Black Sea. The model performed badly at first, mainly because of poor initial conditions. Hence, as the model includes a reduced-rank extended Kalman filter assimilation scheme, after a hindcast where sea surface temperature and temperature and salinity profiles were assimilated, the model yielded realistic forecasts. Furthermore, the time required to run a one-day simulation (about 5 min of simulation, or 10 min with pre-processing and data transfers included) is very limited and thus operational use of the model is possible.

scholarly journals Evaluation of Total Phenolic Content in Relation to Antioxidant Activity of Brown Algae Cystoseira barbata from Black Sea

2019 ◽  
Vol 70 (7) ◽  
pp. 2684-2689
Author(s):  
Emin Cadar ◽  
Rodica Sirbu ◽  
Alef Ibram ◽  
Ana Maria Ionescu
Keyword(s):  
Antioxidant Activity ◽  
Benzoic Acid ◽  
Black Sea ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Reducing Power ◽  
The Black Sea ◽  
Total Phenolic ◽  
Dpph Radical ◽  
Cystoseira Barbata

Seaweeds are widely used in the life science as source of compounds with diverse structural forms and biological activities, therefore, potential source of new antioxidant activity. The algae of the Black Sea have not been adequately explored for their potential as a source of bioactive substances. In this context, Brown algae Cystoseira barbata isolated from Black Sea coastal waters of Romania, were evaluated for their bioactivity potential. The results from Cystoseira barbata were obtained: for total phenolic content obtained in ethanolic extracts (TPC): 385.6 � 1.85 mg GAE/100 g f.w. Phenolic Acids quantified by HPLC-DAD from hydroethanolic extract of Cystoseira barbata from Black Sea was 80.14% from total phenolic content identified. We showed that Cystoseira barbata from the Romanian shore of the Black Sea contains vanillic acid in highest quantity (99.5�0.08 mg/100 g f.w.), followed by benzoic acid (65.7�0.06 mg/100 g f.w.) and feluric acid (54.5�0.01 mg/100 g f.w.). The smallest quantities were for gallic acid (3.5�0.03 mg/100 g f.w.), pyrogallol acid (4.2�0.05 mg/100 g f.w.) and 4-amino-benzoic acid (5.2�0.09 mg/100 g f.w.). Cystoseira barbata has a total content of large phenols and also has strong antioxidant and antimicrobial activity. Antioxidant activity (ACL) was studied using DPPH radical scavenging activity and reducing power. The extracts containing high levels of total phenolic content were also potent DPPH radical scavengers. The IC50 (�g/mL) for Cystoseira barbata in methanolic extract was 942.92� 2.56 �g/mL. High absorbance obtained from reducing power assay indicates high reducing power, measured values of absorbance varied from 0.0901 at 0.9223.

scholarly journals How functional measurement of the traditional foods can raise the knowingness of old recipes used in Romania and Diaspora

10.26458/1441 ◽  
2016 ◽  
Vol 14 (4) ◽  
pp. 9
Author(s):  
Luigi Fillippo Fillippo DANTUONO ◽  
Carmen Costea ◽  
Larisa MIHOREANU ◽  
Adrian VASILE
Keyword(s):  
Black Sea ◽  
The Black Sea ◽  
Bioactive Components ◽  
Traditional Foods ◽  
Main Research ◽  
Collaborative Program ◽  
Doctoral Programmes ◽  
Sea Area ◽  
Initial Research ◽  
Local Research

The present research continues a European project on “sustainable exploitation of bioactive components from the Black Sea Area traditional foods”. Known as Base Food, it was a collaborative program, funded by European Union under the 7th Framework Programme, few years ago. The initial research brought together scientists from countries situated around the Black Sea together with consultants from Italy, United Kingdom, Greece, Portugal and Serbia. Farther the medical, nutritional and technological approaches (Campos S., Doxey J., & Hammond D., 2011, pp. 1496-1506) in the initial project, the Romanian team initiated a unique and outstanding valuable contribution and extended the local research towards socio-economic tracks. Thus, specific aspects were analysed and detailed within certain doctoral programmes. The present paper is emphasizing farther elements, remained collateral, when the main research was considered.

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