Valorization of palm-pressed mesocarp fiber (PPMF): a rich source of insoluble dietary fiber with functional and health-promoting properties
DOI:
https://doi.org/10.3989/gya.0545251.2330Keywords:
Palm-pressed mesocarp fiber, Oil palm trunk, Glucose level, Gut microbiota, α-amylase inhibitory activity, DiabetesAbstract
This study evaluates palm-pressed mesocarp fiber (PPMF), a lignocellulosic by-product of palm oil extraction, as a functional ingredient with potential health benefits relevant to the oil and fat industry. Dietary fiber content, along with physicochemical and functional properties, were comprehensively characterized. A proximate analysis revealed a high insoluble dietary fiber content (86.13 %), surpassing that of the oil palm trunk (73.93 %) and many commonly consumed fiber-rich foods (56-74 %). The functional properties of PPMF such as water retention capacity (12.87 g/g), water swelling capacity (3.31 mL/g), and oil holding capacity (3.29 g/g) were within ranges typical for dietary fibers, indicating suitability for incorporation in food formulations. Notably, PPMF exhibited strong α-amylase inhibitory activity (65.79 %), suggesting a role in managing postprandial glucose levels. These findings highlight PPMF as a sustainable, high-fiber by-product with promising applications in functional food development and value addition within the lipidprocessing industry, contributing to improved nutritional profiles and waste valorization.
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