Effect of molybdenum,vitamin [C] and vitamin [B[1]] on the growth criteria, photosynthetic pigments and metabolic activities of stressed-scenedesmus obliquus cultures

The growth criteria [cell count and dry weight] and total photosynthetic pigments, total carbohydrates, total proteins, free amino acids and praline of stressed- Scenedesmus obliquus cultures were significantly increased up to the level 3 ppm of MoCl[2] of that the control cultures, there above the values all these parameters were significantly decreased. When treated stressed-Scenedesmus obliquus cultures with 200 ppm of either ascorbic acid or thlamine were both supplemented of them separately, the growth criteria, total photosynthetic pigments, total proteins, free amino acids and praline of stressed-Scenedesmus obliquus cultures were significantly increased, as comparison with that the control cultures. Conversely, the total carbohydrate contents significantly decreased, when the algal cultures subjected to various levels [1.5, 3 and 4.5 ppm] of MoCl[2] and treated with 200 of either ascorbic acid or thiamine

Effect of vitamins on growth criteria, photosynthetic pigments and some metabolic products of cobalte chloride stressed scenedesmus obliquus cultures

This study show the effect of applied vitamins ascorbic acid [vitamin C] and thiamine [vitamin B[1]] on growth criteria, total photosynthetic pigments total carbohydrate, total protein, free amino acids and proline contents of stressed Scenedesmus obliquus cultured for 7 days. The growth criteria [cell count and dry weight], total photosynthetic pigments, total carbohydrate contents, total protein contents, free amino acids and proline of stressed Scenedesmus obliquus cultures were significantly increased, when the algal cultures subjected to lower doses [1.5 and 3 ppm] of CoCI[2] only. On the other side, under relatively higher concentration [4.5 ppm] of CoGl[2] the cell count, dry weight, total photosynthetic pigments, total carbohydrate contents, total protein contents and free amino acids of CoCl[2] stressed Scenedesmus obliquus cultures were significantly decreased. However, the soluble carbohydrate contents, soluble proteins and praline contents of stressed Scenedesmus obliquus cultures were significantly increased. On the other hand, the parameters tested were significantly increased, when the algal cultures were subject to various doses [1.5, 3 and 4.5 ppm] of CoCI[2] and treated with 200 ppm applied vitamins [ascorbic acid or thiamine]. However, the different carbohydrate fractions [soluble, insoluble and total carbohydrate], soluble proteins of CoC1[2] stressed Scenedesmus obliquus cultures were significantly decreased