期刊
FOODS
卷 11, 期 3, 页码 -出版社
MDPI
DOI: 10.3390/foods11030266
关键词
tomato pomace; cellulose; acid hydrolysis; alkaline hydrolysis; bleaching; high-pressure homogenization; defibrillation; bioactive compounds
This study proposes a biorefinery approach for utilizing agri-food residues to isolate cellulose with tailored morphological properties from underused lignocellulose feedstocks. The approach combines chemical hydrolysis with high-pressure homogenization, resulting in the extraction of defibrillated cellulose particles and valorization of bioactive compounds in the biomass.
This work proposes a biorefinery approach for the utilization of agri-food residues, such as tomato pomace (TP), through combining chemical hydrolysis with high-pressure homogenization (HPH), aiming to achieve the isolation of cellulose with tailored morphological properties from underused lignocellulose feedstocks, along with the valorization of the value-added compounds contained in the biomass. Cellulose was isolated from TP using sequential chemical hydrolysis in combination with mechanical pretreatment through HPH. The chemical and structural features of cellulose isolated from TP pretreated by HPH were compared with cellulose isolated from untreated TP through light scattering for particle size distribution, optical and scanning electron microscopy, and Fourier-transform infrared spectroscopy (FT-IR) analysis. HPH pretreatment (80 MPa, 10 passes) not only promoted a slight increase in the yield of cellulose extraction (+9%) but contributed to directly obtaining defibrillated cellulose particles, characterized by smaller irregular domains containing elongated needle-like fibers. Moreover, the selected mild chemical process produced side streams rich in bioactive molecules, evaluated in terms of total phenols and reducing activity. The liquors recovered from acid hydrolysis of TP exhibited a higher biological activity than those obtained through a conventional extraction (80% v/v acetone, 25 degrees C, 24 h at 180 rpm).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据