Allamandicin
Allamandicin shows antifeedant and insecticidal activities against fifth instar larvae of Pieris rapae larvae , the AFC50 value is 0.045 mg/mL after 48 hours.
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Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to
24 months(2-8C).
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com
The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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Chinese Journal of Tropical Agriculture, 2013,33 (12) :61-65.
Isolation and Identification of Insecticidal Composition of Allamanda cathartica Linn[Reference:
WebLink]
In order to clarify the insecticidal activities and active compounds of Allamanda cathartica Linn, three insecticidal ingredients were isolated from ethanol extract by bioassay-guided fractionation.
METHODS AND RESULTS:
The antifeeding activities and insecticidal activities of three compounds against Pieris rapae larvae were tested by leaf disk method. Their chemical structures were identified to be allamandin, Allamandicin and allamdin repectively by MS,1H NMR. The AFC50 values of antifeedant of 3 insecticidal compounds against fifth instar larvae of P. rapae were 0.071, 0.045 and 0.103 mg/mL after 48 hours respectively. allamdin showed insecticidal activity against fifth instar larvae of P. rapae and its LC50 value was 0.026 mg/mL, which was superior to positive control toosendanin(0.033 mg/mL).
CONCLUSIONS:
Iridoids may be the main insecticidal ingredients of A. cathartica Linn.
