Magnetic-carboxymethyl cellulose nanofiber, oil palm empty fruit bunch, magnetic solid-phase extraction, organophosphorus pesticides, water samples, gas chromatography
antituberculosis activity, naturally biisoflavonoid, 1, 1'-bi-2-naphthol, demethylvestitol, 7, 2'4'-trihydroxyisoflavone, liquiritigenin, Sesbania grandiflora, xenognosin B.