A Comparative Study on Extraction and Physicochemical Properties of Soluble Dietary Fiber from Glutinous Rice Bran Using Different Methods
Haoshuang Chen,
Shudong He,
Hanju Sun,
Qiuyang Li,
Kuan Gao,
Xinya Miao,
Jie Xiang,
Xiongjie Wu,
Longmei Gao,
Yi Zhang
Affiliations
Haoshuang Chen
Engineering Research Center of Bio-Process of Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China
Shudong He
Engineering Research Center of Bio-Process of Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China
Hanju Sun
Engineering Research Center of Bio-Process of Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China
Qiuyang Li
Engineering Research Center of Bio-Process of Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China
Kuan Gao
Engineering Research Center of Bio-Process of Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China
Xinya Miao
Anhui Xiangyuan Food Technology Co., Ltd., Bengbu 233400, China
Jie Xiang
Anhui Xiangyuan Food Technology Co., Ltd., Bengbu 233400, China
Xiongjie Wu
National Polymer Materials Quality Supervision and Inspection Center, Tongcheng 231400, China
Longmei Gao
National Polymer Materials Quality Supervision and Inspection Center, Tongcheng 231400, China
Yi Zhang
Department of Food Science, Pennsylvania State University, University Park, PA 16802, USA
The methods of hot water extraction and ultrasound-assisted enzymatic treatment were applied for extracting the soluble dietary fiber from the glutinous rice bran in the study. Based on the single factor experiment for the hot water method, the optimum parameters of the extraction time of 120 min, solid-liquid ratio 1:20 (w/v), and pH 8.0, as well as the extraction temperature 80 °C, were obtained, while the yield and purity of SDF reached 31.83 ± 0.06% and 93.28 ± 0.27%, respectively. Furthermore, the SDF yield was improved to 34.87 ± 0.55% by using the ultrasound-assisted enzymatic treatment under the optimum conditions of cellulase dosage 9 × 103 U/g and ultrasonic temperature of 50 °C. Similar polysaccharide compositions were detected based on the infrared spectroscopic analysis. Compared with the SDF obtained from hot water extraction, the whiteness, solubility, water holding capacity, and swelling properties of SDF extracted by ultrasound-assisted enzymatic method improved significantly. These results demonstrated that both two strategies could be applied to SDF extraction in practical production, and the ultrasound-assisted enzymatic method might be an effective tool to improve the functional properties of SDF.
