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Showing 2 results for Sesame Seeds
Taher Mohasseli, ,
Volume 6, Issue 1 (10-2015)
Abstract
Nanotechnology involves technological research and development in spaces at the range of 1 to 100 nanometers, and in this technology, very small and atomic scale particles are created and handled. Plant extracts can be used as a green method for the synthesis of silver nanoparticles. In this study, the biosynthesis of silver nanoparticles was performed using extracts of sesame (Sesamum indicum) seeds. Silver nitrate was added to the seed extract, and then it was incubated at 30 ° C. The effects of three concentrations (1mM, 2mM and 3mM) of silver nitrate on the synthesis of silver nanoparticles were studied. The analyses of absorption spectroscopy UV-Visible, Transmission Electron Microscopy (TEM), X-ray Diffraction (XRD) and Inductively Coupled Plasma (ICP) were conducted to assess the production of nanoparticles. UV-Visible spectroscopy analysis and the peak at 420 nm indicated the occurrence of nanoparticles in the extract. TEM image determined that the nanoparticles were spherical with average size of about 14 nm. XRD analysis showed the nano-crystals synthesized by the extract, and Inductively coupled Plasma (ICP) determined the conversion percentage of silver ion into silver nanoparticle as approximately 99.61 percent.
Volume 7, Issue 4 (12-2018)
Abstract
In the present study, the effect of ground sesame seeds in three levels of 0, 0.15 and 0.25% on features of biological, chemical and sensory evaluation silver carp surimi gel in vacuum packing for 4 months in freezing temperatures (-18°C) was investigated. The results showed that the highest levels of volatile nitrogen month 4 in the control (21.99±0.32mg per 100g), respectively. The thiobarbituric acid did not like the higher limit the amount of free fatty acids is increased. The highest bacteria in month 4 in the control (6.86±0.05Log cfu/g) treatment, respectively. The highest and lowest amount of lactic acid bacteria, respectively, on May 4 in group 1 (4.86±0.10Log cfu/g) and May 1 in all treatments (2.00±0.00Log cfu/g), respectively. Sensory evaluation factors during 4 months in freezing temperatures are not significantly different the colorimetric parameters (L*, a*, and b*) and tissue treatments poll 0.25% sesame seed powder was the best treatment. According to the results of chemical analysis, sensory and microbiological shelf life achieved the best treatment was 0.25% in the fourth month, ground sesame seeds.
