Vol. 8, Issue 6 (2019)

Author(s):
Keithellakpam Lakshmi Bala, Dr. AA Broadway and Avanish Kumar

Abstract:
In this study, degumming of crude wild walnut oil (CWWO) was conducted at different levels of refining parameters, phosphoric acid, caustic soda and bleaching earth. And also, different levels of refining temperature using design of experiment (DOE) method, response surface methodology (RSM) with Central Composite Design (CCD), Design Expert 11. Rotary evaporator unit is used to carry out the experiment of refining processes. The main objective of refining is to remove the contaminants that adversely affect the quality of oil, thereby reducing the shelf life and consumer acceptance. Phosphorus content was monitored in this experiment. The quadratic model was found appropriate to get the optimum results. Phosphorus of RWWO was ranged from 2.7 (mg/kg) to 14.18 (mg/kg) over the entire experimental conditions. It is evident from that phosphorus was observed maximum because of low dosages of phosphoric acid (%), bleaching earth (%) and temperature (^oC) of 1.0, 1.0 and 70 respectively and minimum was at input variables phosphoric acid (%), bleaching earth (%) and temperature (^oC) of 1.25, 1.50 and 85 respectively.