Showing 5 results for Sharifian
Gillan Attaran Fariman, Mohammad Roozitalab, Hasan Zadabas Shahabadi, Salim Sharifian,
Volume 4, Issue 3 (Winter 2015)
Abstract
Microalgae as a source of saturated and unsaturated fatty acids, pigments, pharmaceutical and food metabolites, has received more focus by biological researchers at last decades. The amount and composition of fatty acids produced by microalgae depended on biomass production and environmental factors such as changes in salinity, light and nutrient availability. In this study, the green microalgae Dunaliella bardawil isolated from Chabahar Bay was cultured under different salinities (35, 70 and 105 g/L) using Conway medium. All treatments with air pump at 25±2 ° C and 12L: 12D (h) photoperiod and aerated. Effect of different salinity on the growth rate, lipid production and fatty acid composition of algal biomass were examined. ANOVA results showed that the highest growth rate and lipid content in the salinity of 70 g/L was obtained which are 933 and 206 milligrams per liter, respectively. Maximum and minimum lipid content of D. bardawil measured, 24.5 and 19 percent, at 105 and 35 ppt, respectively. Due to reduced cell density in 105 grams of salt per liter of fat produced per unit volume decreased to 65mg/L. The results show that D. bardawil purification from Chabahar Bay with degree unsaturation between 95-73 has great potential for biodiesel production.
Aliakabar Hedayati, Fateme Khani, Maryam Sharifian, Mohsen Khalili,
Volume 6, Issue 2 (Autumn 2016)
Abstract
One hundred and five fish with an average weight of 2.5 g from the aquaculture center in the port of Turkmen, Golestan province, were cached, sub-lethal test was for 1 week with 5 treated of diazinon as 0, 25, 50, 75 and 90% of LC50 (0, 0.42, 0.85, 1.28 and 1.17 ppm, respectively). The results showed that with progress of poison, gill tissue lesions will be increased such as hyperemia and hemorrhage, fractures and secondary lamellar connection, one-way and two-way lamellar cast gill and shorten the secondary lamellar, swollen, multicellular be harder to lamella.
Salim Sharifian, Bahare Shahbanpour, Ali Taheri, Moazameh Kordjazi,
Volume 8, Issue 4 (ُُSpring 2019)
Abstract
Seaweeds are one of the most important resources for extraction of natural bioactive components. In the present study, effect of different solvents (methanol 100%, methanol 70%, acetone 100%, and acetone 70%) was evaluated on the phenolic components extraction and antioxidant properties of two brown seaweed species (
N. zanardinii and
P. australis) from Chabahar coasts. Antioxidant activities of the first extract and its fractions including chloroform, dichloromethane, ethyl acetate and aqueous phase were measured using total phenolic content, DPPH free radical scavenging activity, reduction power and metal chelating activity methods. Phenol content and antioxidant properties were higher in 100% methanolic extract compared to other treatments for both algae. Ethyl acetate fraction of
N. zanardinii showed the best antioxidant activities. Antioxidant properties of
N. zanardinii were considerably higher than
P. australis. The results showed that
N. zanardinii can be considered as potential sources of natural antioxidants.
Dr Salim Sharifian, Dr Mehran Loghmani,
Volume 13, Issue 3 (Autumn 2023)
Abstract
Marine plants are good source of natural antioxidant compounds. Mangroves are a group of salt-tolerant marine plants of intertidal areas with numerous medicinal properties. In the present study, phytochemical analysis (steroids, alkaloids, phenols, flavonoids and tannins) and antioxidant properties (total phenolic content, DPPH free radical scavenging activity, reduction power and metal chelating activity) of methanolic extract of leaves, stem bark, and roots of mangrove species Avicennia marina was investigated. The mangrove samples were collected from the shores of Gwater Bay in the southeast of Sistan and Baluchestan province. Phytochemical analysis showed that all the tested compounds were present in the extract of mangrove leaves, except alkaloids. While in the stem bark extract, only phenolic compounds, flavonoids and tannins were observed and alkaloids and steroids were not detected. Alkaloids, phenols and flavonoids were discovered in the root extract. The assessment of the antioxidant properties showed that among different parts of mangroves, the highest amount of phenol (6.28 mg gallic acid/ g extract), free radical scavenging (59.18 %) and iron ion reduction power (absorbance at 700 nm: 0.37) was found in the leaves extract. Contrary to these two indicators, the highest amount of iron chelating activity (absorbance at 562 nm: 0.84) was found in mangrove root extract. The results of this research showed that different parts of the mangrove plant, especially its leaves, can be considered as a potential source of natural antioxidants.
Ms Atefeh Bampoury, Dr Salim Sharifian, Dr Seraj Bita,
Volume 14, Issue 2 (summer 2024)
Abstract
Fish are a significant dietary source of various minerals essential for human health. This study examined the mineral profile (sodium, potassium, calcium, magnesium, iron, zinc, copper, iodine, selenium, and chromium) and harmful trace elements (mercury, lead, cadmium, and arsenic) in different parts of the bigeye ilisha (Ilisha megaloptera), including the backbone, head, abdominal fin and viscera, caudal fin, and fillet, from the northern coast of the Oman Sea. Results revealed significant variations in element concentrations among different parts, with higher mineral levels often found in waste parts compared to the fillet. Most minerals were present in amounts exceeding human dietary requirements, suggesting that processing waste parts of bigeye ilisha could be beneficial as food or dietary supplements. Additionally, the levels of harmful elements—mercury, lead, cadmium, and arsenic—were below permissible limits for human consumption. These findings support the potential for developing value-added products from bigeye ilisha.
