Isolation and identification of biologically active compounds from the wild plant, suadea vermiculata against aphis craccivora koch [electronic resource].

Includes references.

Biological and phytochemical studies were conducted on Suadea venniculata to investigate the biologically active compounds of this plant against Aphis caraccivora Koch. Results showed that, fraction Cwith LC50 0.081 mg/cm and LC95 0.226 mg/cm2 was the most effective compared with the crude extract LC50 0.104 mg/cm2 and LC95 1.338 mg/cm2 followed by fraction A (LC50 0.103 mg/cm2 and LC95 0.352 mg/cm2) and then fraction B which had the lowest LC95 value (0.709) than those of crude extract (1.338). Data also indicated that these fractions composed mainly of fatly acids, fatty acids methyl esters in addition to hydrocarbons. The main active component of fraction A. fatty acids methyl esters with percent area 70.698 % followed by 22.452 % monoterpenes. lenoleic acid with percent area 2.692 and low amount of hydrocabons with area percent 0.745. As regarding fraction Bhydrocarbons represented the main components with percent area 56.425 %. The other compounds Identtfied In this fraction were fatly acids 14.006 %. methyl anthranilate 15.706 %and methyl salicylate 7.650 %. Fraction C was the highest toxic fraction against A. craccivora. its chemical constituents were fatty acids methyl esters with 15.717 %. fatly acids 10.063 % and monoterpens 7.991 %. Methyl salicylate identified in this fraction with area percent 4.539 in addition to 15.470 % hydrocarbons.

Summary in Arabic.

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