• Meghna Vanza
• Bhavin Patel

An outer layer of rice seeds is the waste for Rice Mill industry. It comprises a large number of value-added products such as Proteins (12-18 %), Fats (15-20%), Carbohydrates and various enzymes. Ultrasound-assisted extraction (UAE) of nutrition grade Protein called as Rice Bran Protein (RBP) from defatted rice bran (DFRB) was investigated and various operating parameters were optimized in the present study. To avoid denaturation and generation of impurities in the Protein isolate, extraction was performed at lower pH 9, though the extraction yield was higher at pH 11. Approximately 79% extraction was obtained by an ultrasound extraction process in 21 min as compared to 68% by the conventional process after 2 h. Final concentrate of RBP contained 79% Protein, 10.8% moisture and 2% Ash. It’s functional properties such as Protein solubility index, water and oil holding capacity (3.30±0.06 and 2.76±0.01, respectively), emulsion stability and activity (31.74±0.11 and 0.59±0.05) as well as Protein digestibility (86%) were excellent. The kinetics of extraction was studied by Peleg’s model, which showed good agreement with all experimental results. The results indicated an efficient application of UAE for the extraction of RBP.

Rice Bran, Ultrasound, Extraction Optimization, Kinetic Model, RBP Composition analysis

"Extraction of Proteins from Rice Mill Industry Waste using Ultrasound: It’s Kinetics and Functional Properties", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.616-625, May-2019, Available :http://www.jetir.org/papers/JETIR1905291.pdf

"Extraction of Proteins from Rice Mill Industry Waste using Ultrasound: It’s Kinetics and Functional Properties", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp616-625, May-2019, Available at : http://www.jetir.org/papers/JETIR1905291.pdf