期刊
FOODS
卷 10, 期 11, 页码 -出版社
MDPI
DOI: 10.3390/foods10112772
关键词
Newhall navel orange; dietary fiber; structural properties; functional properties
资金
- Guangdong Provincial Key Research Project of China [2020B020226010]
- National Natural Science Foundation of China [31901713]
- Program for Guangdong YangFan Introducing Innovative and Enterpreneurial Teams [2017YT05H045]
- Science and Technology Project of Guangzhou [201909020001]
- Talent Project of Guangdong Academy of Agricultural Sciences [R2020PY-JX011]
Ultrasound-assisted enzymatic treatment was used to process Newhall navel orange peel and residue, and the extracted soluble dietary fibers (SDF) and insoluble dietary fibers (IDF) were studied for their structural and functional properties. The results showed that residue-SDF and residue-IDF could be ideal dietary fibers for application in the functional food industry.
Ultrasound-assisted enzymatic treatment was used to treat Newhall navel orange peel and residue, and then the structural, physicochemical and functional properties of extracted soluble dietary fibers (SDF) and insoluble dietary fibers (IDF) were investigated. The structural properties were determined using scanning electron microscopy, X-ray diffraction, FT-IR and monosaccharide composition. Among these dietary fibers, residue-SDF showed a more complex structure, while peel-IDF exhibited a looser structure. Four samples showed representative infrared spectral features of polysaccharides, typical cellulose crystalline structure and diverse monosaccharide composition. Furthermore, residue-IDF exhibited higher oil-holding capacity (2.08 g/g), water-holding capacity (13.43 g/g) and nitrite ion adsorption capacity (NIAC) than other three samples, and residue-SDF showed the highest swelling capacity (23.33 mL/g), cation exchange capacity (0.89 mmol/g) and cholesterol adsorption capacity (CAC) among these dietary fibers. In summary, this study suggests that the residue-SDF and residue-IDF could be used as the ideal dietary fibers for application in the functional food industry.
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