Research Paper
Marjan Enshaeieh; Mahboobeh Madani
Abstract
The application of microorganisms in the production of economically valuable products has attracted a great attention in recent years. These valuable materials such as single cell oil and poly-alcohols have potential for application in various industrial fields. Single cell oil in biodiesel production ...
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The application of microorganisms in the production of economically valuable products has attracted a great attention in recent years. These valuable materials such as single cell oil and poly-alcohols have potential for application in various industrial fields. Single cell oil in biodiesel production and poly-alcohols such as xylitol in the food and pharmaceutical industries, are valuable. In this study high production of SCO was evaluated and analyzing of SCO was done by FTIR spectroscopy. In addition, xylitol production by the yeast, in the media containing xylose was done and xylitol was analyzed by using colorimetric method. Optimization of microbial oil and xylitol production was done by Taguchi method and valuable results were obtained. This strain was reached to SCO production and dry biomass of 10.21 g/L in optimum condition including 100 g/L glucose, 72 h incubation time, pH = 5, temperature of 25 ºC and rpm=180. In addition, in the medium with 140 g/L of xylose, xylitol production was 54.99 g/L. The results of this study can show that there are native yeasts with high potential of producing valuable materials which can be directed to produce the desired products by providing appropriate medium condition.
Research Paper
Mohsen Mansouri
Abstract
Sesame (Sesamum indicum L.) belongs to the family (Pedaliaceae), and the crop is valuable. Sesame is an oilseed plant, and the study of its storage conditions is essential. Cryoprotectants are usually lower the freezing point of the solution and is blocked the creation of ice crystals in inside and outside ...
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Sesame (Sesamum indicum L.) belongs to the family (Pedaliaceae), and the crop is valuable. Sesame is an oilseed plant, and the study of its storage conditions is essential. Cryoprotectants are usually lower the freezing point of the solution and is blocked the creation of ice crystals in inside and outside solution of the cell. In this research was performed, cryopreservation to method vitrification with two types of solution protecting PVS2 and PVS3 in 7 times (20, 40, 60, 80, 100, 120 and 140 minutes). This experiment factorial was studied in the form of with completely randomized design (CRD) with two factors protective solution (two level) and time levels (seven level) and three replications. The results of analysis of variance for treatment time and soluble type in three traits, percentage germination, root and shoot length was significant at the level of 1% (P
