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Showing 2 results for Optimum Growth
S. Rahimi, R. Manaffar, A. Bagheri,
Volume 10, Issue 2 (7-2019)
Abstract
Saccharomyces yeast genus has a wide application in biotechnology that several studies on this subject are performed. They have also known as a dietary supplement in breeding all kinds of creatures in particular for aquatics. Species of this genus are considered as probiotics, as well as a lot of beneficial effects on growth are creatures and Yeasts can be cultured in a variety of waste and cheap substrates, including hydrocarbons and petroleum. So finding an Appropriate and inexpensive culture media for optimal growth of yeast is important. In the present study, along with the study of Saccharomyces species diversity as intestinal flora of domestic rainbow trout flora, optimum growth conditions the strains of Saccharomyces cerevisiae was studied in different culture media as YPD, YPAD, YPG, YPAC, and DM. This research not only emphasized the diversity of Saccharomyces cerevisiae strains as an intestinal flora in domestic fishes, but also revealed the optimum growth of yeasts in YPAD media.
Volume 14, Issue 7 (12-2012)
Abstract
Dunaliella is a green halotolerant microalga, which has several industrial applications e.g. β-carotene production. Identification of different Dunaliella species has been carried out by morpho-physiological and recently molecular studies. To achieve an improved understanding of taxonomy, these studies are required to be in linkage. The present study describes molecular and specific morpho-physiological properties of a Dunaliella isolate obtained from Gavkhooni salt marsh in Iran. Phylogenetic analysis of Internal Transcribed Spacer region demonstrated that the isolate was associated with different species except D. salina (CCAP 19/18 and 19/30) and D.viridis. 18S rDNA size of the isolate was identical to that of D. tertiolecta and intron-lacking strains of D. salina. 18S rDNA fingerprint profile and phylogenetic analysis revealed D. tertiolecta as the closest taxon to the isolate. Features of optimum growth salinity (1.5-3% w/v) and maximum carotenoid per cell (0.7 pg cell-1) were comparable with reported data for D. terrtiolecta. Morphological characteristics including the size and color of the cells, presence and location of stigma and refractile granules were similar to those of D. tertiolecta. Totally, considering molecular and morpho-physiological properties, the isolate was attributed to the species D. tertiolecta and was named as Dunaliella tertiolecta ABRIINW-G3.
