Develop an extrusion-assisted extraction process to increase canola meal inclusion in feed
Authors: Lu, J., F. Zou, N. Zhang, J. Bell, Z. Zhang, H. Qi
Description: Canola and rapeseed meal have been used as viable alternatives to soybean meal in feeds. However, there are anti-nutritional factors, such as glucosinolates and a higher content of fiber in meals, restricting their application at high inclusion levels in monogastric animals and poultry diets. Additionally, glucosinolates is a natural preservative potentially used for pest control, and possible drug ingredients. The objective of this research was to develop an extrusion-assisted extraction process to (a) reduce glucosinolates content in canola meal, (b) increase digestibility of fibre, and (c) extract and recover glucosinolates as a natural preservative. This novel process is to replace the batch extraction process, enabling to carry out thermomechanical and chemical treatments in a continuous step. A 40-mm twin-screw extruder (Century Extrusion) was employed. Experiments were performed according to a factorial design with solvent, processing profile such as screw speed, solvent / solid ratio as the factors. The level of glucosinolates, crude fibre, and neutral detergent fibre in extrudates were measured, and compared with those in raw canola meal. The optimized process was selected by the most efficient combination of factors. The optimized process depicted the main advantages of this process such as reduced time, solvent, and reactant requirements, enhanced extraction yield and rheological properties, and high purity of the product.
Keywords: Anti-nutritional, glucosinolates, fibre, extrusion, extraction, process
Technical field: Bioprocess Systems Engineering
Conference name: CSBE/SCGAB 2015 Annual Conference, Edmonton, AB, 5-8 July 2015.
Session name: Bioprocessing I - Extraction and Drying Processes
Citation: Lu, J., F. Zou, N. Zhang, J. Bell, Z. Zhang, H. Qi. 2015. Develop an extrusion-assisted extraction process to increase canola meal inclusion in feed. CSBE/SCGAB 2015 Annual Conference, Edmonton, AB, 5-8 July 2015.
Publisher: Canadian Society for Bioengineering
Language 1: en
Rights: Canadian Society for Bioengineering