期刊
FOOD CHEMISTRY
卷 232, 期 -, 页码 443-449出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2017.04.003
关键词
Tomato residue fibers; High-speed homogenization; High-pressure homogenization; Fiber structure; Soluble fibers; Insoluble fibers
资金
- National Natural Science Foundation of China [31501433]
- Jiangsu Provincial Science and Technology Plan [BN2015162]
Tomato residue fibers obtained after derosination and deproteinization were processed by high-speed homogenization (HSH) and high-pressure homogenization (HPH), and their effects on fiber structure was investigated, respectively. Characterizations including particle size distribution, SEM, TEM and XRD were performed. HSH could break raw fibers to small particles of around 60 mu m, while HPH could reshape fibers to build network structure. Microfibrils were released and their nanostructure consisting of elementary fibrils was observed by TEM. XRD patterns indicated both HSH and HPH could hardly alter the nanostructure of the fibers. Physicochemical properties including expansibility, WHC and OHC were determined. Both HSH and HPH could increase the soluble fiber content by about 8%, but HSH-HPH combined processing did not show better result. Acid (4 mol/L HCl) was used in replacement of water medium and the acidic degradation of fibers could be promoted by high speed shearing or high pressure processing. (C) 2017 Elsevier Ltd. All rights reserved.
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