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Articles by M. Ramin
Total Records ( 6 ) for M. Ramin
  K.H. Swe , A.R. Alimon and M. Ramin
  Problem statement: Asexual sporulation is a common reproductive mode for a diverse group of fungi and the ultimate limiting factor in fungal biomass production. Approach: Delaying sporulation may increase the biomass in terms of mycelial production and the same time increase production of enzymes. Results: In order to delay the sporulation different levels of ammonium sulphate (10, 12 and 14%) were added in culture media as nitrogen source for fungus. It was observed that addition of 14% ammonium sulphate was the best concentration to add in culture during Solid State Fermentation (SSF) of substrate (Palm Kernel Cake (PKC) + Rice Bran) by Aspergillus niger to delay sporulation. Adding ammonium sulphate also increased the digestibility of fiber in the Fermented Substrate (FS). In addition very low sporulation was observed even after 72 h of fermentation. The development of spore forming was inhibited or delayed when ammonium sulphate was added compared to the control. Similarly, both NDF and ADF content of FS were decreased in the treatment groups. The higher the ammonium sulphate added to the medium, the lower the NDF and ADF contents of FS although the differences of NDF content were not significant after 3 days or 4 days fermentation. . Conclusion/Recommendations: It was concluded that adding 14% ammonium sulphate significantly delayed sporulation and increased fungal biomass production in a solid state fermentation system.
  M. Marjani , S. Jamili , P.G. Mostafavi , M. Ramin and A. Mashinchian
  In the present study, effect of different dose rates of synthetic androgen 17-alpha Methyl Testosterone (MT) i.e., 50, 75 and 100 mg of hormone in per kg of feed, on sex reversal and growth performance of Mozambique tilapia was evaluated. MT was administrated orally by using pellet dry starter and Ethanol Alcohol, diet to tilapia fry for 21 days in glass aquaria. The fry were also kept for 2 weeks after feeding to monitor its growth performance. At the end of the experiment the sex ratio was determined by examining the gonads after dissecting the fish. Growth performance was monitored by recording the morphometric characteristics. Wet body weight and total length of fish on start of feeding end of feeding and two weeks after feeding were measured. The results of the present study showed that all MT receiving treatment showed a significantly higher male proportion than the control experiment. Dose rate of 75 mg kg-1 MT of feed resulted in maximum male population (98.09%) with 1.91% sterilized fish. The dose rate of 75 mg kg-1 MT gave the maximum gain in body weight i.e., 11.8 g, which is 1.2 times greater than the control.
  S. Daei , S. Jamili , A. Mashinchian and M. Ramin
  This study was carried out within inland Aquaculture Research Center Bandar Anzali (Guilan Province) through Southwestern part of the Caspian Sea; to examine the effect of two heavy metals (lead, cadmium) on (Fe) amount in blood of Chalcalburnus chalcoides. This fish is widespread and lives through Southern and Western part of the Caspian. The sampling was randomly done in two stages. The size of fish was 15-16 cm. After transferring fish to the pool, in order to adaptation, has been provided 12 aquariums in which 9 fish were released to each one. Regarding to the lowest capacity (LC50) for these fish, chose the selective densities to pollute aquariums’ environs. In such a way that for each aquarium cell with a constant density, we account 0.05, 0.15 and 0.03 ppm for lead and 0.15, 0.25 and 0.75 ppm for cadmium, respectively; while a stereotype aquarium was considered as a non- polluted environ. In each stage, we left 3 fish out of them to take blood from their heart and tail-stem, then we transferred the frozen samples to the lab. This experiment was repeated for the second metal as the same. Acid nitric digested the blood to provide a transparent and colorless solution for the atomic absorption device. With respect to the obtained absorptions by Pb, Cd and Fe in lab, the variance analysis (ANOVA) was carried out in (SPSS) and (Excel) systems. Based on statistical results, cadmium with ratio p<0.05 replaced with ferritin (Fe) over the time, but metal (Pb) couldn’t so. The results indicated that by increase in lead density within various times, this metal was absorbed by other fish’s tissues.
  M. Ramin , A.R. Alimon , J.M. Panandam , K. Sijam , A. Javanmard and N. Abdullah
  The digestion and Volatile Fatty Acid (VFA) production from rice straw and oil palm fronds by cellulolytic bacteria isolated from the termite Coptotermes curvignathus were investigated. The bacteria were Acinetobacter strain Raminalimon, Enterobacter aerogenes strain Razmin C, Enterobacter cloacae strain Razmin B, Bacillus cereus strain Razmin A and Chryseobacterium kwangyangense strain Cb. Acinetobacter strain Raminalimon is an aerobic bacterium, while the other species are facultative anaerobes. There were significant differences (p<0.05) among the bacteria for Dry Matter (DM) lost and acetic acid production from rice straw and Acinetobacter strain Raminalimon showed the highest activity. The facultative bacteria C. kwangyangense strain Cb (cfu mL-1 231x10-6, OD: 0.5), E. cloacae (cfu mL-1 68x10-7, OD: 0.5) and E. aerogenes (cfu mL-1 33x10-7, OD: 0.5) were used for digestion study with the rumen fluid microflora. The in vitro gas production technique was applied for the comparative study and the parameters measured were pH, gas (volume), dry matter lost, acetic acid, propionic acid and butyric acid concentrations. pH was not significantly (p<0.05) different among the five treatments. The bacterium C. kwangyangense strain Cb showed the highest activity (p<0.05) for DM lost, acetic acid, propionic acid and butyric acid production from rice straw when compared to the other bacterial activities. There was no significance (p<0.05) difference between the three bacteria for the dry matter lost of oil palm fronds but the production of Volatile Fatty Acids (VFA) was significantly (p<0.05) high in the treatment which was inoculated with C. kwangyangense strain Cb. The Gen Bank NCBI/EMBL accession numbers for the bacterial strains are EU332791, EU305608, EU305609, EU294508 and EU169201.
  M. Ramin , A.R. Alimon , K. Sijam and N. Abdullah
  Bacterial strains isolated from the gut of the local termite Coptotermes curvignathus were inoculated into a buffered medium containing minerals and Whatman filter paper as the sole carbon source to observe the ability of the bacteria to digest solid substrate. The bacteria were Bacillus cereus strain Razmin A, Enterobacter aerogenes strain Razmin B, Enterobacter cloacae strain Razmin C, Acinetobacter strain Raminalimon and Chryseobacterium kwangyangense strain Cb. The Gen Bank NCBI/EMBL accession numbers for the bacterial strains were EU294508, EU305608, EU305609, EU332791 and EU169201, respectively. The ability of bacterial cultures to grow in this medium as well as to digest the filter paper was determined by visual observation after 30 days. All bacterial cultures showed growth as the medium turned cloudy and the filter paper became macerated. Chryseobacterium kwangyangense strain Cb showed yellow pigmented colonies on the filter paper. Bacillus cereus strain Razmin A showed clumps of degraded filter paper with black dots.
  M. Ramin , A.R. Alimon , N. Abdullah , J.M. Panandam and K. Sijam
  In this study the lower termite Coptotermes curvignathus (Holmgren) and higher termite Macrotermes gilvus (Hagen) were identified from different parts in the vicinity of University Putra Malaysia (UPM). We isolated three enteric bacteria from the hindgut of Coptotermes curvignathus (Holmgren). All isolates were facultative anaerobes. The isolates were identified as Enterobacter aerogenes, Enterobacter cloacae and Clavibacter agropyri (Corynebacterium) by using BIOLOG assay and Bergey’s manual. The bacteria were able to assimilate carboxymethylcellulose (CMC) and cellobiose.

 
 
 
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