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α-Amylase inhibitors from ficus Sp. seeds and their activities towards coleoptera insect pests
(Protein & Peptide Letters, 2004-04) Bezerra, Ingrid Wilza Leal; Teixeira, Fabiano de Moura; Oliveira, Adeliana Silva de; Araújo, Carina Leite de; Leite, Edda Lisboa; Queiroz, Karla Cristiana de Souza; Sales, Maurício Pereira de
a-Amylase Inhibitors were isolated from Ficus sp. (Gameleira) seeds by acetone fractionation and Sephadex G-50. Two inhibitors (a-PPAI and a-ZSAI) were tested against a-amylases from coleopteran larvae. a-PPAI was active to a-amylases of Callosobruchus maculatus (52%) and Zabrotes subfasciatus (53%). a-ZSAI was strongly active to Z. subfasciatus (100%) of and Mimosestes mimosae (98%). The a-ZSAI is a glycoprotein of ~50kDa with an IC50 value of 0.074 mg ml -1