High concentration and yield production of mannose from acai (Euterpe oleracea Mart.) seeds via mannanase-catalyzed hydrolysis.

ABSTRACT: The açaí seed corresponds to approximately 85% of the fruit's weight and represents ~1.1 million metric tons of residue yearly accumulated in the Amazon region, resulting in an acute environmental and urban problem. To extract the highest value from this residue, this study aimed to evaluate its chemical composition to determine the appropriate applications and to develop conversion methods. First, mannan was confirmed as the major component of mature seeds, corresponding to 80% of the seed's total carbohydrates and about 50% of its dry weight. To convert this high mannan content into mannose, a sequential process of dilute-acid and enzymatic hydrolysis was evaluated. Among different dilute-H₂SO₄ hydrolysis conditions, 3%-acid for 60-min at 121 °C resulted in a 30% ma

SUBMITTER: Monteiro AF 

PROVIDER: S-EPMC6662815 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature