title: Tackling correlated responses during process optimisation of rapeseed meal protein extraction.
abstract: Setting of process variables to meet the required specifications of quality characteristics is a crucial task in the extraction technology or process quality control. Simultaneous optimisation of several conflicting characteristics poses a problem, especially when correlation exists. To remedy this shortfall, we present multi-response optimisation based on Response Surface Methodology (RSM)-Principal Component Analysis (PCA)-desirability function approach, combined with Multiple Linear Regression (MLR). Experimental manifestation of the proposed methodology was executed using a multi-responses-based protein extraction process from an industrial waste, rapeseed press-cake. The proposed optimal factor combination reflects a compromise between the partially conflicting natures of the original responses. Prediction accuracy of this new hybrid method was found to be better than RSM alone, verifying the adequacy and superiority of the said approach. Furthermore, this study suggests the feasibility of the exploitation of the waste rapeseed oil-cake for extraction of valuable protein, with improved colour properties using simple, viable process.
authors.affiliation: Department of Food Engineering and Technology, School of Engineering, Tezpur University, Assam 784028, India.
authors.forename: Manashi
authors.initials: M
authors.lastname: Das Purkayastha
authors.affiliation: Indian Statistical Institute, North-East Centre, Tezpur, Assam 784028, India.
authors.forename: Ganesh
authors.initials: G
authors.lastname: Dutta
authors.affiliation: Department of Food Engineering and Technology, School of Engineering, Tezpur University, Assam 784028, India.
authors.forename: Anasuya
authors.initials: A
authors.lastname: Barthakur
authors.affiliation: Department of Food Engineering and Technology, School of Engineering, Tezpur University, Assam 784028, India. Electronic address: charu@tezu.ernet.in.
authors.forename: Charu Lata
authors.initials: CL
authors.lastname: Mahanta
mesh_terms: D029741:Brassica rapa / Q000737:chemistry*; D005229:Fatty Acids, Monounsaturated; D010938:Plant Oils / Q000032:analysis*; D025341:Principal Component Analysis; D000074262:Rapeseed Oil
chemical_list: D005229:Fatty Acids, Monounsaturated; D010938:Plant Oils; D000074262:Rapeseed Oil
keywords: Desirability function; Multiple Linear Regression; Principal Component Analysis; Rapeseed press-cake; Response Surface Methodology