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        1 - Optimization of Various Conditions (Temperature, Light Intensity Change, Culture Methods Batch, Fed Batch and kind of Carbon Source) for Phycocyanin Maximum Production by the Microalgae Spirulina Platensis(Arthrospira
        Keramat Rezaee Maryam kalantari Mahnaz Hashemi ravan Mohamad Taghi Golmakani Nasrin Faragi Delnia Faragi
        Introduction: Nowadays the application of natural dyes in food and pharmaceutical products are desirable and might be important. Phycociyanin is a natural pigment with powerful antioxidant activity and is extracted from the Spirulina algae. Due to the possible toxic eff More
        Introduction: Nowadays the application of natural dyes in food and pharmaceutical products are desirable and might be important. Phycociyanin is a natural pigment with powerful antioxidant activity and is extracted from the Spirulina algae. Due to the possible toxic effects of some synthetic colors and antioxidants the use of natural additives in food and pharmaceutical product are perfected. Materials and Methods: In this research, phycocyanin is produced at 30 and 35 , using glucose, ethanol and acetic acid as carbon source in both batch and semi continues methods with variable light intensitives of 2 and 3.5 Klx for maximum production. The experiments were carried out according to Full Factorial method using fixed and variable conditions on the samples. Results: The results show that in batch and semi continues methods with 1.0 mlL-1 carbon source and 2.0 Klx light intensity by increasing the temperature from 30 to 35 , the production of plycociyanin in glucose as compared to the other two carbon sources have rapidly declined. The results also indicated that by using a concentration of 1 mlL-1 carbon source and light intensity of 3.5 Klx at 30 , there were not significant differences between the batch and semi continuous methods. Conclusion: It was concluded that the amount of production by using glucose was maximum and also using ethanol showed good yields with minimal differences. Manuscript profile
      • Open Access Article

        2 - Effect of different sowing methods and harvest times on the morphological characteristics and yield of forage sorghum (sorghum bicolor) CV. Speed-Feed in Iranshahr region.
        احمد مهربان afsaneh kamali deljoo امید عزیزیان شرمه
        To study the effects of different sowing methods and harvest times on the morphological characteristics and forage yield of forag sorghum (CV. Speed-Feed) an experiment was conducted at Agricultural and Natural resources research center of Balouchestan in 2013-2014. The More
        To study the effects of different sowing methods and harvest times on the morphological characteristics and forage yield of forag sorghum (CV. Speed-Feed) an experiment was conducted at Agricultural and Natural resources research center of Balouchestan in 2013-2014. The experiment was conducted as strip plots in a randomized complete block design with3 replications. Three sowing methodsviz.Broadcasting, drill and furrow planting and three harvest times viz 50, 60 and 70 days aftersowing were considered as vertical and horizontal strips respectively.Morphological characteristics including plant, fresh and dry weight of stems and leaves ratio, N, P, K and protein percents were measured.Results showed that sowing method had significan effects on the plant, Fresh and dry weight, tiller number per plant and Fresh and dry weight, of leaves and stems, but it wasn’t affected leaf length, leaf width, leaf number per stem. Leaf to stem ratio, N, P, K and protein percent significantly. Maximum fresh and dry fodder yields with 108.3 and 27.23 ton/hec were observed in furrow and drill planting respectively. Harvest time had significant effect on the plant height, leaf length, Leaf width, leaf number per plant, fresh and dry biomasses, leaf to stem ratio, fresh and dry weight of stems and leaves, N and protein percents.planting respectively when harvest was done 70 days after sowing in both of mentioned sowing methods and these treatments can be recommended for increasing qualitative yield of forage sorghum cv. Speed-feed in Iranshahr region condition. Manuscript profile
      • Open Access Article

        3 - The impact of different methods of planting and cutting the quantity and quality of forage sorghum time in the city of Iranshahr
        A. Mehraban A. Kamali Deljoo O. Azizian Shermeh
        In order to evaluate the most appropriate method of planting and harvest times of forage sorghum Speedfeed, Strip plot in the form of randomized complete block design experiment with three replications in 1394-1393 at the ResearchCenter for Agriculture and Natural Resou More
        In order to evaluate the most appropriate method of planting and harvest times of forage sorghum Speedfeed, Strip plot in the form of randomized complete block design experiment with three replications in 1394-1393 at the ResearchCenter for Agriculture and Natural Resources Balochistan is located in the city of Iranshahr. Two different methods of planting furrow cultivation, napa, row, and different harvesting times Different harvesting times of 50, 60 and 70 days after planting, respectively, in the main plots and sub-groups. Traits such as growth habit, leaf and shoot dry weight, nitrogen, and protein content was measured Fsfrvptasym. The results showed that the effect of different planting methods on fresh and dry weight, shoot dry weight was statistically significant, but no significant difference in the percentage of nitrogen, phosphorus, potassium and protein was observed. Harvest time is also significantly more weight and leaves, fresh weight and dry, nitrogen and protein impressed. According to test results, treatment, planting furrow, row, and 70 days after planting harvest time to increase the quality and quantity of forage sorghum recommended Speedfeed Iranshahr conditions. Manuscript profile