Bioactive components of N. speciosa flower is found by solvent extractions, becoming a concentrate if
the solvent is reduced. Qi & Hedges (1995) stated that most of bioactive compounds are sensitively on air, rays, or heat. Otherwise, bioactive compounds should be made in nanoencapsulant. Nanoencapsulant has smaller size than
microencapsulant. Nanoparticle is solid colloid particle on 1 – 1000 nm (1μm) (Donbrow, 2000).