Navegando por Autor "Araújo, Carina Leite de"
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Artigo Biological activity of proteins from pulps of tropical fruits(Food Chemistry, 2004-03) Bezerra, Ingrid Wilza Leal; Araújo, Carina Leite de; Dantas, Isabelle C.; Lima, Tônia V. S.; Oliveira, Adeliana Silva de; Miranda, Maria Raquel Alcântara de; Leite, Edda Lisboa; Sales, Maurı́cio Pereira deProteins present in fruit pulps were extracted and concentrated to 90% saturation point with ammonium sulfate. The total protein content (mg/g) from each fruit pulp was: Assai (0.20), Suriname Cherry (0.10), Mangaba (0.62), Yellow Mombim (0.15), Acerola (0.17), Cupuassu (0.54), Melon (0.24) and Passion fruit (0.80). Inhibitory activity against digestive enzymes, bovine trypsin, human salivary a-amylase and porcine pancreatic a-amylase, were assessed. Results show that inhibitory activity against pancreatic a-amylase was greater in yellow mombim and cupuassu pulps with 0.0345 and 0.0335 mg inhibitor/g pulp, respectively. Melon and assai pulps had the greatest inhibitory activity towards salivary a-amylase with 0.042 and 0.142 mg inhibitor/g pulp, respectively. Antitryptic activity was detected in Assai, mangaba, yellow mombim, suriname cherry, acerola and cupuassu. The levels of inhibitory activity were low for most fruits and those with highest activities were assaı´ (0.054 mg/g), mangaba (0.0395 mg/g) and caja´ (0.0328 mg/g)Artigo 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 dea-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