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22 results on '"Ramezanpour, Zohreh"'

7. Bioactivity Potential of Gracilaria salicornia, Padina boergesenii, Polycladia myrica: Antibacterial, Antioxidant and Total Phenol Assays.

Author

Ramezanpour, Zohreh, Pirbasti, Fateme Ghanbari, and Dogaheh, Somayeh Rasouli

Subjects
*MARINE algae, *GRACILARIA, *ANTIOXIDANTS, *BIOACTIVE compounds, *ANTIBACTERIAL agents
Abstract

Antibacterial activities of MeOH and aqueous extracts of Gracilaria salicornia (C. Agardh) Dawson, Padina boergesenii Allander and Kraft, Polycladia myrica (S. G. Gmelin) Draisma, were examined against Gram-positive bacteria Staphylococcus aureus Rosenbach 1884, Pseudomonas aeruginosa (Schröter 1872) Migula 1900, and Escherichia coli (Migula 1895). Indeed, extracts of wet samples showed 5.3±0.58 to 34.3±0.6 mm antibacterial activity. Furthermore, antioxidant activities of algae evaluated using DPPH and ABTS radical scavenging methods. Whereas, in the DPPH method, aqueous extract of Polycladia myrica showed the highest antioxidant activity, MeOH and aqueous extracts of Gracilaria salicornia exhibited the lowest antioxidant activity. Beside, the antioxidant activity of extracts was higher using the ABTS method. Additionally, aqueous extracts showed the lowest IC50 values in comparison to MeOH extracts. Total phenolic content of aqueous extract was 5.07±0.08 to 46.73±0.24 mg gallic acid /100 g higher than the MeOH extract. The MeOH and aqueous extracts of Padina boergesenii demonstrated the highest TPC among others. [ABSTRACT FROM AUTHOR]

Published
2021

12. Pollution evaluation in the Shahrood River: do physico-chemical and macroinvertebrate-based indices indicate same responses to anthropogenic activities?

Author

Sharifinia, Moslem, Mahmoudifard, Abbas, Imanpour Namin, Javid, Ramezanpour, Zohreh, Yap, Chee Kong, Sharifinia, Moslem, Mahmoudifard, Abbas, Imanpour Namin, Javid, Ramezanpour, Zohreh, and Yap, Chee Kong

Abstract

This study evaluates the impact of anthropogenic activities on the Shahrood River using water physico-chemical variables and macroinvertebrates data sets obtained over a period of 12 months between February 2012 and February 2013 at 8 sampling sites. Biotic indices i.e. FBI and BMWP based on macroinvertebrates and physico-chemical indices (MPI, HPI and NSF-WQI) were employed to evaluate the water quality status in connection with natural- and human-induced pressures. Based on physico-chemical indices, water quality was categorized as low polluted level and it is suitable for drinking purposes. The water quality based on biotic indices was related to the anthropic activities; a clear deterioration of the water quality was observed from upstream to downstream sites. The water quality along the river changed from very good (class I; reference sites) to good (class II; midstream sites) and turned into moderate (class III) and poor (class IV) quality (downstream sites). These findings indicate that biotic indices are more powerful indicators in assessing water quality than physico-chemical indices. Allocapnia, Glossosoma and Hesperoperla were exclusively related to least disturbed sites, and Naididae, Orthocladiinae and Ecdyonurus were found in sites showing notable degradation. Our results recommended that the use of macroinvertebrates could be employed as a cost-effective tool for biomonitoring and controlling of polluted riverine ecosystems in the Middle East. Finally, the results from this study may be useful not only for developing countries, but also for any organization struggling to use macroinvertebrate based indices with restricted financial resources and knowledge.

Published
2016

16. Establishment of Herbarium (Stock collection) of the Algae of the Southern part of the Caspian Sea

Author

Ramezanpour, Zohreh, Zahmtkesh, A., Samadzadeh, M., and Arshad, O.

Subjects
Species, Algae, Anabaena sp, Dactylococcopsis raphidiodes, Spirulina sp, Fisheries, S. obliquus, Nodularia sp, S. acuminatus, Herbarium, Scenedesmus abundans, Samples, Ankistrodesmus sp, Lyngbia sp, Phytoplankton, Stock collection, Oscillatoria sp, Ankistrodesmus falacatus
Abstract

The algal herbarium was set up and put into operation officially since 22 August 1993 at the Ghazian research station of the Gilan Fisheries Center. Several samplings were carried out from different regions of the Anzali Lagoon and Parts of the Southern shores of the Caspian Sea. The Samples Collected are being stored in the Laboratory in Living and non Living form. 163 Living samples of 23 phytoplankton species are stored in the form of different types of inoculants liquid media and agar Plates. The species collected are as follows: Nodularia sp1, Nodularia sp2, Spirulina sp. Oscillatoria sp., Anabaena sp1,Anabaena sp2, Dactylococcopsis raphidiodes Lyngbia sp., Ankistrodesmus falacatus, Ankistrodesmus sp., Scenedesmus abundans S. acuminatus, S. obliquus, S. quadricada, Chlorella vulgaris Thalassionema nitzschioides, Cyclotella sp., Rhizosolenia calcar avis, Navicula sp., Bacillaria sp. Pure cultures of seven phytoplankton species have been developed which include: Scenedesmus abundans, S.obliquus, S. acuminatus, S. quadricada, Chlorella vulgaris, Spirulina sp.and Ankistrodesmus falacatus. The non Living sampeles are stored dried or fixed in suitable Preservatives. More than 200 phytoplankton specimens are available in the Laboratory at present, of which 100 species have been identified. Iranian Fisheries Science Research Institute Published

Published
2007

21. FATTY ACIDS, AMINO ACIDS, MINERAL CONTENTS, AND PROXIMATE COMPOSITION OF SOME BROWN SEAWEEDS1.

Author

Tabarsa, Mehdi, Rezaei, Masoud, Ramezanpour, Zohreh, Robert Waaland, J., and Rabiei, Reza

Subjects
FATTY acids, AMINO acids, MARINE algae, DICTYOTA (Algae), UNSATURATED fatty acids, METHIONINE, ANALYTICAL chemistry
Abstract

This study was conducted to create a nutritional database on brown seaweeds and to popularize their consumption and utilization in Iran. The fatty acid contents, amino acids profiles, and certain mineral elements composition of some brown seaweeds, Padina pavonica (L.) Thivy, Dictyota dichotoma (Huds.) J. V. Lamour., and Colpomenia sinuosa (Mert. ex Roth) Derbés et Solier were determined. Total lipid content ranged from 1.46 ± 0.38 to 2.94 ± 0.94 g · 100 g−1dry weight (dwt), and the most abundant fatty acids were C16:0, C18:1, C20:4 ω6, and C20:5 ω3. The unsaturated fatty acids predominated in all species and had balanced sources of ω3 and ω6 acids. Highest total polyunsaturated fatty acid (PUFA) levels occurred in C. sinuosa. The protein content of D. dichotoma was 17.73 ± 0.29 g · 100 g−1dwt, significantly higher than the other seaweeds examined. Among amino acids essential to human nutrition, methionine (Met; in D. dichotoma and P. pavonica) and lysine (Lys; in C. sinuosa) were present in high concentrations. The crude fiber content varied by 9.5 ± 11.6 g · 100 g−1dwt in all species. Chemical analysis indicated that ash content was between 27.02 ± 0.6 and 39.28 ± 0.7 g · 100 g−1dwt, and that these seaweeds contained higher amounts of both macrominerals (7,308-9,160 mg · 100 g−1dwt; Na, K, Ca) and trace elements (263-1,594 mg · 100 g−1dwt; Fe, Ni, Mn, Cu, Co) than have been reported for edible land plants. C. sinuosa had the highest amount of Ca, Fe, and a considerable content of Na was measured in P. pavonica. [ABSTRACT FROM AUTHOR]

Published
2012
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22. FATTY ACIDS, AMINO ACIDS, MINERAL CONTENTS, AND PROXIMATE COMPOSITION OF SOME BROWN SEAWEEDS1.

Author

Tabarsa, Mehdi, Rezaei, Masoud, Ramezanpour, Zohreh, Robert Waaland, J., and Rabiei, Reza

Subjects
*FATTY acids, *AMINO acids, *MARINE algae, *DICTYOTA (Algae), *UNSATURATED fatty acids, *METHIONINE, *ANALYTICAL chemistry
Abstract

This study was conducted to create a nutritional database on brown seaweeds and to popularize their consumption and utilization in Iran. The fatty acid contents, amino acids profiles, and certain mineral elements composition of some brown seaweeds, Padina pavonica (L.) Thivy, Dictyota dichotoma (Huds.) J. V. Lamour., and Colpomenia sinuosa (Mert. ex Roth) Derbés et Solier were determined. Total lipid content ranged from 1.46 ± 0.38 to 2.94 ± 0.94 g · 100 g−1dry weight (dwt), and the most abundant fatty acids were C16:0, C18:1, C20:4 ω6, and C20:5 ω3. The unsaturated fatty acids predominated in all species and had balanced sources of ω3 and ω6 acids. Highest total polyunsaturated fatty acid (PUFA) levels occurred in C. sinuosa. The protein content of D. dichotoma was 17.73 ± 0.29 g · 100 g−1dwt, significantly higher than the other seaweeds examined. Among amino acids essential to human nutrition, methionine (Met; in D. dichotoma and P. pavonica) and lysine (Lys; in C. sinuosa) were present in high concentrations. The crude fiber content varied by 9.5 ± 11.6 g · 100 g−1dwt in all species. Chemical analysis indicated that ash content was between 27.02 ± 0.6 and 39.28 ± 0.7 g · 100 g−1dwt, and that these seaweeds contained higher amounts of both macrominerals (7,308-9,160 mg · 100 g−1dwt; Na, K, Ca) and trace elements (263-1,594 mg · 100 g−1dwt; Fe, Ni, Mn, Cu, Co) than have been reported for edible land plants. C. sinuosa had the highest amount of Ca, Fe, and a considerable content of Na was measured in P. pavonica. [ABSTRACT FROM AUTHOR]

Published
2012
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