15 research outputs found
Sequential combination of laccase pretreatment and acid extraction for high-yield pectin production from pomelo peels
Bio-methane production from tomato pomace: preliminary evaluation of process intensification through ultrasound pre-treatment
Flash extraction optimization of low-temperature soluble pectin from passion fruit peel (Passiflora edulis f. flavicarpa) and its soft gelation properties
Better Pectin Yield From Passion Fruit Peel (Passiflora edulis f. flavicarpa): From Shaker or Ultrasound? A Comparison
A Simplified Biorefinery Concept for the Valorization of Sugar Beet Pulp: Ecofriendly Isolation of Pectin as a Step Preceding Torrefaction
The valorization of sugar beet pulp (SBP) from sugar industry as a source of valuable substances has been taken in consideration in this work. In particular, the eco-friendly extraction of pectins with citric acid has been adopted as a preliminary step in a simplified biorefinery concept where the pectin-free solid is subsequently subjected to a torrefaction treatment for its upgrading into a commodity solid biofuel. An extensive physicochemical characterization of the raw feedstock and the isolated pectins has also been performed, which may be useful to identify suitable application routes. Results show that the extraction conditions [1.5 pH, 90 °C, 4 h contact time and SBP-to-solvent ratio of 1:30 (g/mL)] selected in this work allow obtaining a relatively high yield (25% wt, db) of high methoxyl pectins (with some impurities), which exhibit the same colorimetric characteristics of commercial citrus pectins and are not conducive to microbial growth. A further purification step of isolated pectins is required to improve the emulsifying properties. Graphical Abstract: [Figure not available: see fulltext.]