Chemical constituents of Senniella spongiosa, F. Muell, Allen
2009
Ahmed, F.A. | Emam, Sh.Sh.
This investigate to study the phytochemical screening of the stems and leaves of S. spongiosa revealed some differences in the chemical constituents. Chlorophyll a, b and total carotenoids were high during winter in the leaves compared with the stems in the summer. The moisture content reached its maximum value during winter for plant stems and its minimum value during summer for plant leaves, while the organic matter reached its maximum value during summer for plant stems, and its minimum value during winter for plant leaves. In addition, the total ash content reached its maximum value during summer for plant leaves and its minimum value during winter for plant stems. The percentages of crude fibres and total nitrogen reached their maximum values in winter, for plant leaves and stems. Also, the percentages of total carbohydrates reached their maximum value for plant leaves in winter and minimum value during summer for plant stems. On the other hand, the percentages of total phenolics, alkaloids, tannins and flavonoids reached their maximum values during the summer season for plant leaves and stems, and the lowest values were detected during winter for plant leaves and stems. The phenolic compounds were most abundant in summer. Meanwhile the percentage of total oxalates reached its maximum value during winter season for plant leaves and stems. Moreover, the stems and leaves possessed higher contents of Fe and Zn during the summer season. Proline was accumulated in plant stems and leaves in winter season. While, high glycine betaine and choline hydrochloride contents were found in plant leaves during summer. From these data, it is suggested that under stress S. spongiosa plants tended to accumulate secondary metabolic products, which may be a part of a suite of adaptation to unfavourable conditions.
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