The Relationships Between Weight, Length, Age and Intensity of Photosynthesis and Organotrophy in the Thallus of Cystoseira barbata from the Black Sea

1976 ◽  
Vol 19 (6) ◽  
Author(s):  
K. M. Khailov ◽  
Yu. K. Firsov
Keyword(s):  
Black Sea ◽  
The Black Sea ◽  
Cystoseira Barbata

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.

Heavy metal assessment in algae, sediments and water from the Bulgarian Black Sea coast

1999 ◽  
Vol 39 (8) ◽  
pp. 207-212 ◽  
Author(s):  
A. Jordanova ◽  
A. Strezov ◽  
M. Ayranov ◽  
N. Petkov ◽  
T. Stoilova
Keyword(s):  
Heavy Metal ◽  
Coastal Zone ◽  
Black Sea ◽  
Correlation Coefficients ◽  
The Black Sea ◽  
Enteromorpha Intestinalis ◽  
Lead And Cadmium ◽  
Cystoseira Barbata ◽  
Black Sea Coast ◽  
Sea Coast

The aim of our investigation is a survey of heavy metal pollution in algae, sediments and water from the Bulgarian Black Sea coast and determination of algae species appropriate as bioindicators. The levels of iron, copper, manganese, zinc, lead and cadmium are determined in water, sediments and eight species of macroalgae: (four green: Cladofora laetevirens, Ulva rigida, Enteromorpha intestinalis and Bryopsis plumosa; two brown: Cystoseira crinita and Cystoseira barbata; and two red: Ceramium rubrum and Corallina mediterranium), widely distributed in the Bulgarian coastal zone, and dominant in the Black Sea. The studied area is the littoral coastal zone from four locations - Tuzlata, Ravda, Ahtopol and Sinemoretz. No significant variations between metal concentrations in algae samples are obtained, while for sediments and water there are significant differences between location and season. The Cladofora laetevirens and Ceramium rubrum species show the highest metal content while Cystoseira crinita and Cystoseira barbata show the lowest level. The correlation coefficients and concentration factors of the elements are calculated.

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.

scholarly journals Elemental accumulation in the black sea brown algae cystoseira studied by neutron activation analysis

2014 ◽  
Vol 21 (1) ◽  
pp. 9-23 ◽  
Author(s):  
Alexandra Kravtsova ◽  
Nataliya Milchakova ◽  
Marina Frontasyeva
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Black Sea ◽  
Coastal Waters ◽  
Brown Algae ◽  
The Black Sea ◽  
Cystoseira Barbata ◽  
Elemental Accumulation ◽  
First Time

Abstract For the first time the concentration of 26 macro- and microelements (Na, Mg, Al, Cl, K, Ca, Sc, V, Mn, Fe, Co, Ni, Zn, As, Br, Rb, Sr, Sb, I, Cs, Ba, Sm, Nd, Ag, Au, and U) in the thalli of brown algae Cystoseira barbata C. Ag. and Cystoseira crinita (Desf.) Bory was determined by instrumental neutron activation analysis (INAA), Sevastopol region, south-western Crimea, the Black Sea. The observed peculiarities of the elemental accumulation showed that Cystoseira spp. can be used as a biomonitor of coastal waters pollution in the study area.

Sterols and volatiles in Cystoseira barbata and Cystoseira crinita from the black sea

1997 ◽  
Vol 45 (1) ◽  
pp. 93-95 ◽  
Author(s):  
Tsenka Milkova ◽  
Georgi Talev ◽  
Rumen Christov ◽  
Stefka Dimitrova-Konaklieva ◽  
Simeon Popov
Keyword(s):  
Black Sea ◽  
The Black Sea ◽  
Cystoseira Barbata

Unravelling the potential of seaweeds from the Black Sea coast of Romania as bioactive compounds sources. Part I: Cystoseira barbata (Stackhouse) C. Agardh

2019 ◽  
Vol 134 ◽  
pp. 110820 ◽  
Author(s):  
Adriana Trifan ◽  
Alexandru Vasincu ◽  
Simon Vlad Luca ◽  
Christiana Neophytou ◽  
Evelyn Wolfram ◽  
...  
Keyword(s):  
Bioactive Compounds ◽  
Black Sea ◽  
The Black Sea ◽  
Cystoseira Barbata ◽  
Black Sea Coast ◽  
Sea Coast

scholarly journals Heavy Metals Existing in the Seaweed from the Romanian Coast of the Black Sea

2016 ◽  
Vol 4 (1) ◽  
pp. 92
Author(s):  
Emin Cadar ◽  
Ticuta Negreanu Pîrjol ◽  
Aneta Tomescu ◽  
Stelian Paris ◽  
Cristina Luiza Erimia ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Black Sea ◽  
The Black Sea ◽  
Cystoseira Barbata

Seaweed is a natural treasure that can be intensely evaluated for therapeutic purposes. It is well known that the seaweed is an indicator of accumulation of heavy metals. In order to be used for medical purposes, kelp has to meet certain conditions concerning the content of heavy metals accumulated. In this work are presented the results of the analyzes concerning the content of heavy metals in two algae: Cystoseira barbata and Ceramium rubrum.

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