Structural and Physicochemical Characteristics of Rice Bran Dietary Fiber by Cellulase and High-Pressure Homogenization
The present paper aims to study the effect of cellulase hydrolysis and high-pressure homogenization on the structural and physicochemical properties of rice bran dietary fiber (RB-DF). Scanning electron microscopy showed that cellulase treatment led to the formation of a porous structure on RB-DF su...
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MDPI AG
2019-03-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/9/7/1270 |
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| author | Fengying Xie Tian Zhao Hongchen Wan Miao Li Lina Sun Zhongjiang Wang Shuang Zhang |
| author_facet | Fengying Xie Tian Zhao Hongchen Wan Miao Li Lina Sun Zhongjiang Wang Shuang Zhang |
| author_sort | Fengying Xie |
| collection | DOAJ |
| description | The present paper aims to study the effect of cellulase hydrolysis and high-pressure homogenization on the structural and physicochemical properties of rice bran dietary fiber (RB-DF). Scanning electron microscopy showed that cellulase treatment led to the formation of a porous structure on RB-DF surface. High-pressure homogenization affected the laminated microstructure of RB-DF, leading to the formation of an irregular and loose surface structure. X-ray diffraction demonstrated that joint processing destroyed the amorphous hemicellulose and cellulose regions, and changed the crystallinity of RB-DF, albeit with a minor impact on the crystalline region of cellulose. Fourier transform infrared spectroscopy indicated that combined processing promoted dissociation of some glycosidic bonds in fiber structure, exposing the hydroxyl groups in cellulose, thus improving their ability to bind water molecules. Thermogravimetric analysis showed a significant decrease in the thermal decomposition temperature of RB-DF (<i>p</i> <0.05) as well as a decrease in thermal stability after combined processing. Cellulase hydrolysis and high-pressure homogenization treatment did not improve their oil holding capacity, but significantly increased water holding capacity, swelling capability, and cation exchange capacity of RB-DF. Thus, enzymatic hydrolysis and high-pressure homogenization treatment can change the structure of RB-DF, exposing a large number of hydrophilic groups and enhancing hydration, obtaining uniform RB-DF particle. |
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| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-11T23:57:30Z |
| publishDate | 2019-03-01 |
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| spelling | doaj.art-e4f6aa818bfd42dc8bae620a0c3d35782022-12-22T00:45:19ZengMDPI AGApplied Sciences2076-34172019-03-0197127010.3390/app9071270app9071270Structural and Physicochemical Characteristics of Rice Bran Dietary Fiber by Cellulase and High-Pressure HomogenizationFengying Xie0Tian Zhao1Hongchen Wan2Miao Li3Lina Sun4Zhongjiang Wang5Shuang Zhang6College of Food Science, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, ChinaCollege of Food Science, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, ChinaCollege of Food Science, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, ChinaCollege of Food Science, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, ChinaCollege of Food Science, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, ChinaCollege of Food Science, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, ChinaCollege of Food Science, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, ChinaThe present paper aims to study the effect of cellulase hydrolysis and high-pressure homogenization on the structural and physicochemical properties of rice bran dietary fiber (RB-DF). Scanning electron microscopy showed that cellulase treatment led to the formation of a porous structure on RB-DF surface. High-pressure homogenization affected the laminated microstructure of RB-DF, leading to the formation of an irregular and loose surface structure. X-ray diffraction demonstrated that joint processing destroyed the amorphous hemicellulose and cellulose regions, and changed the crystallinity of RB-DF, albeit with a minor impact on the crystalline region of cellulose. Fourier transform infrared spectroscopy indicated that combined processing promoted dissociation of some glycosidic bonds in fiber structure, exposing the hydroxyl groups in cellulose, thus improving their ability to bind water molecules. Thermogravimetric analysis showed a significant decrease in the thermal decomposition temperature of RB-DF (<i>p</i> <0.05) as well as a decrease in thermal stability after combined processing. Cellulase hydrolysis and high-pressure homogenization treatment did not improve their oil holding capacity, but significantly increased water holding capacity, swelling capability, and cation exchange capacity of RB-DF. Thus, enzymatic hydrolysis and high-pressure homogenization treatment can change the structure of RB-DF, exposing a large number of hydrophilic groups and enhancing hydration, obtaining uniform RB-DF particle.https://www.mdpi.com/2076-3417/9/7/1270rice branenzymatic hydrolysiscellulasehigh-pressure homogenization |
| spellingShingle | Fengying Xie Tian Zhao Hongchen Wan Miao Li Lina Sun Zhongjiang Wang Shuang Zhang Structural and Physicochemical Characteristics of Rice Bran Dietary Fiber by Cellulase and High-Pressure Homogenization Applied Sciences rice bran enzymatic hydrolysis cellulase high-pressure homogenization |
| title | Structural and Physicochemical Characteristics of Rice Bran Dietary Fiber by Cellulase and High-Pressure Homogenization |
| title_full | Structural and Physicochemical Characteristics of Rice Bran Dietary Fiber by Cellulase and High-Pressure Homogenization |
| title_fullStr | Structural and Physicochemical Characteristics of Rice Bran Dietary Fiber by Cellulase and High-Pressure Homogenization |
| title_full_unstemmed | Structural and Physicochemical Characteristics of Rice Bran Dietary Fiber by Cellulase and High-Pressure Homogenization |
| title_short | Structural and Physicochemical Characteristics of Rice Bran Dietary Fiber by Cellulase and High-Pressure Homogenization |
| title_sort | structural and physicochemical characteristics of rice bran dietary fiber by cellulase and high pressure homogenization |
| topic | rice bran enzymatic hydrolysis cellulase high-pressure homogenization |
| url | https://www.mdpi.com/2076-3417/9/7/1270 |
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