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Abstract

Research & Development in Material Science

Comparative Study on the Rice Bran Stabilization Processes: A Review

  • Open or CloseBipro N Dubey*, Drew Fitton, Samsun Nahar and Martin Howarth

    National Centre of Excellence for Food Engineering, Faculty of Science Technology and Arts, Sheffield Hallam University, Howard Street, Sheffield S1 1WB, United Kingdom

    *Corresponding author:Bipro N Dubey, National Centre of Excellence for Food Engineering, Faculty of Science Technology and Arts, United Kingdom

Submission: July 10, 2019;Published: July 15, 2019

DOI: 10.31031/RDMS.2019.11.000759

ISSN : 2576-8840
Volume11 Issue2

Abstract

Rice bran is an undervalued/underutilized by-product of rice milling, rich in protein, lipids, dietary fibers, vitamins, and minerals. It is an inexpensive source of high-quality protein, fiber and lipids to be incorporated into value-added food products. The issue with rice bran is its susceptibility to rancidity and therefore measures must be taken to stabilize the bran in order for it to be fully utilized. Due to this susceptibility to rancidity, historically the bran has either been disposed and wasted or used as low-grade animal feed. As the nutritional value of the bran has been recognized, along with its potential to add value to food products, research has been increasing in volume in order to determine the most effective methods for stabilizing the bran and extracting the valuable nutrients from it. It’s been reported that a free fatty acid content of over 5% is considered to render the bran unfit for human consumption (Tao, Rao & Liuzzo, 1993). Therefore, controlling this level of rancidity is imperative to being able to store and use rice bran over extended periods of time. In order to achieve control, stabilization procedures can be carried out on the rice bran to slow down the lipase activity within the bran and preserve the nutritional qualities that rice bran possesses. Stabilization of rice bran is particularly important for use over winter months in developing countries, where there may be no crops to harvest and therefore a supply of non- rancid rice bran could be extremely beneficial. This length of storage for stabilized rice bran could be up to a period of 6 months, where it can become important for value-added product development (Bagchi, Adak & Chattopadhyay, 2014). The present review will provide an overview of the traditional and innovation rice bran stabilization techniques, those have been a common interest in the research community, and the suitability of the process in terms of the energy consumption.

Keywords: Rice bran; Rancidity; Stabilization; Microwave heating; Infrared heating; Energy consumption

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