ALBERT

Description: The effects of chitosan (Ch) (Medium molecular weight chitosan) coating combined with natamycin (Ch+ N) on quality of salted kutum (Rutilus frisii kutum) roe (treated with 4% NaCl salt) during refrigerated storage (4±1°C) were studied over a period of 90 days. A solution of Ch (1%, w/v) and Ch+ N (1%, w/v Ch +5 and 10 mg natamycin per Kg salted roe) was used for the coating. The control (salted roe) and the coated roe samples were analyzed periodically (0. 30, 60 and 90 days) for chemical (TVB-N, PV and TBA), remaining salt and pH characteristics. The results indicated that the chitosan coating enhanced the storage quality of the kutum salted roe as compared to an uncoated salted roe (control). Chitosan coating combined with natamycin afforded better protection than chitosan coating for chemical parameters (TVB-N, PV and TBA). Remaining salt was determined lower than 2% for all treatment. The conclusion was showed the combination of chitosan coating and natamycin at a 10 mg per Kg of roe were increased shelf life of the kutum roe.

Description: The lack of sustainable management programs has resulted in the drastic decline of sturgeons stocks in the Caspian Sea in the past two decades. Legal catch quotas for all Caspian littoral states has dropped from 28500 tons in 1985 to 460 tons in 2007 while caviar production in the Caspian Sea during the same period decreased from 3000 tons to 70 tons. Caviar production in the I.R. of Iran dropped from 305 tons in 1985 to about 11 tons in 2007. The "Strategic and applied research planning for sturgeon management and conservation" was developed with the collaboration of academicians from universities, researchers, experts, fishery authorities and representatives of the executive government to maintain sustainable development and rational management of sturgeon stocks in the Caspian Sea. The preparation and development of this planning was carried out through 121 sessions (2100 person hours) A comprehensive report (375 pg) was prepared which was divided into five volumes; Volume I comprises an introduction, objectives, strategies and planning, present status of production and caviar harvest, catch and export quotas, revenue generated and release of sturgeon fingerlings, Volume II comprises analysis of the problem by constructing a problem tree with 8 broad categories to analyze 344 problems and an objective tree which is the hierarchic flowchart of objectives with 9 broad categories with 241 items, Volume III comprises a review and analysis of previous and ongoing research (414 projects) on different aspects of sturgeon during the past 40 years, Volume IV comprises prioritizing research objectives outlined by the objective tree and finally Volume V which prioritizes primary objectives for 14 executive and 10 research programs. On the basis of the evaluation of the present status and for the sustainable development and rational management of sturgeon stocks a strategic and applied research planning program was proposed and developed within the framework of three primary objectives; 1) Management and sustainable use of Caspian Sea resources (5 programs), 2) Rehabilitation and restoration of stocks (5 programs), 3) Development of aquaculture (4 programs). The applied research program for each proposed executive program was outlined in 10 programs, 42 comprehensive plans and 222 projects. The primary objective on management and sustainable use of Caspian Sea resources includes 5 programs, 14 comprehensive plans and 63 projects, while the primary objective on rehabilitation and restoration of stocks includes 4 programs, 16 comprehensive plans and 87 projects. The primary objective to address sturgeon aquaculture includes 1 program, 12 comprehensive plans and 72 projects. The impacts and outcome of each of these programs was determined and presented. It is evident that if the present situation persists, the catch figures for adult sturgeon specimens and caviar production in Iran will reach zero in 2021. But if concerted efforts are taken and the proposed strategic and applied research planning program is executed (commencing from 2009) we can put a halt to these declining trends. By producing sturgeon fingerlings to restore population abundances, by conserving and protecting them in the Caspian Sea and by conducting applied research we can produce 206.4 tons of caviar by the year 2033. Apart from harvesting caviar from the Caspian Sea we can also annually produce 3000 tons sturgeon meat and 60 tons farmed caviar starting from the year 2023. The total budget proposed for implementation of this program for a period of 14 years (2008-2022) is USD 2483 million. If this budget is allocated in time and the proposed strategic program is properly and totally implemented, we can not only save many sturgeon populations from extinction but also ensure job opportunities for 6000 fisherman, provide 1480 new job opportunities and annually produce 266 tons of caviar which will generate USD 4957 million.

Description: Accurate scientific and practical plan for achieving the goals of the Islamic Republic of Iran within the framework of Vision development 1404, is the infrastructure achieving sustainable development of the country. Order to achieve the above mentioned objectives and in order to the comprehensive development plans in the country, Iranian fisheries research organization adjust the fifth developing plan for support of executive related departments in country with mobilization a large number researchers consists of several working groups of ifro affiliated research centers. The fifth developing plan consist of three chapters for report of the forth developing plan and intrudction of research, construction plans and financial support (budjet) for period of 2011-2014 A.C.

Description: This project was carried out in order to increase the shelf life of Kilka Fish and prevent color changes during cold storage. Edible film made of sodium alginate (1% concentration) was used for fish packaging. This project was carried out in four treatment and in triplicates. Treatments were coated samples at intervales times of 0, 2 and 4 hours shelf life in sodium alginate solution and uncoated Kilka (control samples). The coated and control samples were kept at -18 oC. Examination were carried out for a period of six months. Examination was conducted on 21 packs from each treatment on day 1 after processing and from first month untill sixth month after processing.Total bacterial counts and Staphylococcus bacteria count were lower in the coated samples compared to the control samples. Coliform, Escherichia coli and Pseudomonas bacteria contamination were not observed until the end of storage period in the coated samples. Moisture was less in the coated samples at time = 0 and was highest in the coated samples at time = 4 hour. Peroxide value, free fatty acids, thiobarbitoric acid, TVN and pH were higher in coated samples at time = 0 compared with other samples and in coated samples at time = 4 were lower compared with other samples. Statistically significant (p〈0.05) decreases were observed in the coated and control samples during cold – storage. Sensory analysis carried out based on ranking method. Over all there was a significant difference (p〈0.05) between the coated samples and control ones. The coated samples at time = 0 had the best quality. The coated samples at time= 4 hour had lower quality. According to the results, the coated samples had good quality until the end of storage period. Based on the results of sensory analysis the coated samples maintained quality for a period of three months.

Description: Published