environmental stresses trigger a wide variety of plant responses, such as altered gene expression to changes in cellular metabolism and growth. the several plant reactions exist to circumvent the potentially harmful effects caused by light, drought, salinity, pathogen infections and other stresses. a-tocopherol is the major vitamin e compound found in leaf chloroplasts. this antioxidant deactiv...

objective(s): carotenoids which are naturally synthesized by fungi such as yeasts can act as an antioxidant which is closely related to their ability to decrease the risk of a variety of degenerative diseases. in recent years, the increase of demand for carotenoids obtained from natural sources has promoted major efforts to improve carotenoid production from biological sources such as pigmented...

objective fungi produce many different carotenoids and some are attractive in medical and industrial sources. in this work the ability of mucor hiemalis (ptcc 5292) to produce carotenoids in media with different nitrogenous and carbon sources and incubation with white, yellow, blue and red lights (15w, 220v, e27) against dark-grown were studied. materials and method the microorganism cultivatio...

the potential use of date syrup, for the production of carotenoids by rhodotorula glutinisin batch fermentation process, was investigated during 7 days. the results revealed that carbon (glucose or date syrup) and nitrogen sources [yeast extract, (nh4)2so4 and nh4no3] had a significant influence on biomass and carotenoid production. maximum yield of total carotenoid production (7.94 mg/l) with ...

the microalgae, dunaliella salina was isolated from maharlu salt lake, south east of shiraz, iran. the isolated strain was identified by both morphological and physiological markers. the complete its region (its1 + its2) including the 5.8s rdna gene used as molecular marker confirmed our identification. growth and cell proliferation, total chlorophyll and carotenoid contents were determined in ...

  Objective(s): Carotenoids which are naturally synthesized by fungi such as yeasts can act as an antioxidant which is closely related to their ability to decrease the risk of a variety of degenerative diseases. In recent years, the increase of demand for carotenoids obtained from natural sources has promoted major efforts to improve carotenoid production from biological sources such...

                The present study was undertaken to evaluate direct and indirect selection criteria for the improvement of grain yield and quality components in Chenopodium quinoa Willd. Correlated response (CR) and relative selection efficiency (RSE) were estimated for grain yield and three quality components, grain protein, grain carotenoid and leaf carotenoid based on different contributing ...

This study examined the effect of dietary carotenoid availability on carotenoid and retinoid concentrations in the flesh, plasma, skin and eggs of female Chinook salmon Oncorhynchus tshawytscha. Carotenoid concentrations in all tissues were closely related to dietary availability. Early in the breeding season, carotenoids were stored primarily in the muscle, with a flesh carotenoid concentratio...

fruit waste extract was selected as the sole substrate for carotenoid production and the effect of parameters like ph, temperature and agitation have been studied. a two-step simple sequential strategy was employed for the optimization of carotenoid production by rhodotorula rubra. in the first step, one factor at a time was employed to evaluate the impact of ph on carotenoid production. the ou...

as an aromatic and colorful plant of substantive taste, saffron (crocus sativus l.) owes such properties of matter to growing class of the secondary metabolites derived from the carotenoids, apocarotenoids. regarding the critical role of micrornas in secondary metabolic synthesis and the limited number of identified mirnas in c. sativus, on the other hand, one may see the point how the characte...