Development of rice bran protein hydrolysate-based bioactive products

Summary

The Australian rice industry generates a huge amount of rice bran as a byproduct of its milling operation. Currently, rice bran is mainly utilised as stockfeed, a low value product with limited returns. This project aims to develop rice bran proteinbased bioactive ingredients with a wide range of applications in pharmaceutical, nutraceutical and functional food products, thereby adding significant values to rice crop and increasing returns to rice farmers and processors. Rice bran comprises of about 1216% of proteins. Research on other cereal and legume proteins has shown that controlled hydrolysis of protein can produce hydrolysates with a wide range of healthbenefitting properties including antioxidant, antihyperglycaemic, hypocholesterolaemic, immunomodulating and antihypertensive activities. These properties are increasingly utilised in an ever expanding range of nutraceutical and functional food products for preventing many chronic diseases prevalent in modern societies. The unique composition of rice bran protein, coupled with its low allergenicity compared with many other cereal and legume proteins, represents a unique opportunity to develop rice bran proteinbased bioactive ingredients. However, there is little information available on the bioactivities of rice bran protein and its hydrolysates, which makes it impossible to develop such products. The proposed project is expected to close this gap of knowledge and lead to the development of rice bran proteinbased products that will add significant value to rice crop, thereby increasing the profitability and long term sustainability of the rice industry.

Program

Rice

Research Organisation

University of New South Wales

Objective Summary

The overall aim of the proposed project is to develop rice bran proteinbased bioactive ingredients with a wide range of applications in pharmaceutical, nutraceutical and functional food products, thereby adding significant values to rice crop and increasing returns to rice farmers and processors. Specifically, the objectives of the project are: 1. To optimise enzymatic conditions for producing rice bran protein hydrolysates with optimum bioactivities; 2. To investigate the healthbenefitting properties of rice bran protein hydrolysates including antioxidant, antihyperglycaemic, immunomodulating, hypocholesterolaemic and antihypertensive activities; 3. To isolate and identify the bioactive peptides from the rice bran protein hydrolysates; and 4. To develop rice bran protein hydrolysatebased ingredients with healthpromoting properties applicable in pharmaceutical, nutraceutical and functional food products.

Project Code

PRJ-008720

Project Stage

Closed

Project Start Date

Monday, July 15, 2013

Project Completion Date

Monday, May 30, 2016

Journal Articles From Project

Not Available

National Priority

Frontier technologies for building and transforming Australian industries

National Priority

Advanced Technology

National Priority

RIC-Research to achieve water efficiency target

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