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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2019, Volume : 7, Issue : 3
First page : (104) Last page : (114)
Article doi: :

Optimization of Process Parameters of Ohmic Heating for Improving Yield and Quality of Tomato Seed Oil

Sangeetha Karunanithi, Akash Pare*, Sunil C. K. and M. Loganathan

Indian Institute of Food Processing Technology, Ministry of Food Processing Industries, Government of India
Pudukkottai Road, Thanjavur, Tamilnadu- 613005, India
*Corresponding Author E-mail:
Received: 5.04.2019 | Revised: 3.05.2019 | Accepted: 8.05.2019  



The study was done to utilize the tomato seed waste since, the tomato seed is having good source of vegetable oil with higher antioxidant activity. This research is giving solution towards enhancing the oil yield by using ohmic heating. The influence of the electric field strength (10 – 14 V/cm), end point temperature (40 – 60 0C), and holding time of 5 to 15 mins on tomato seed oil extraction was determined. The optimal condition for oil extraction was found by using Box-Behnken Design. The optimization of process parameter was done based on higher extraction of tomato seed oil and process parameters were identified as, electric field strength of 14 V/cm, end point temperature of 50 0C, and holding time of 5 mins. The oil yield was significantly increased upto 10.84 % as by Ohmic treatment as compared to control sample (i.e. without treatment). The quality evaluation of ohmic assisted extracted oil was found and compared with the control sample. The quality of oil obtained by ohmic heating pretreatment was determined and its as equvalent as control sample. The range of all physicochemical quality parameters namely reftractive index, color, specific gravity, free fatty acids, saponification value, peroxide value, and iodine value fall under within the acceptable limits as stated by international standard for edible oils. From this study it can be conclueded that the tomato seed oil yield and quality can be improved by pretreatment of ohmic heating prior to oil extraction.

Key word: Tomato seed waste, Optimization of process parameters, Oil yield, Ohmic heating, Quality parameters.

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Cite this article: Sangeetha, K., Pare, A., Sunil, C.K. and Loganathan, M., Optimization of Process Parameters of Ohmic Heating for Improving Yield and Quality of Tomato Seed Oil, Int. J. Pure App. Biosci.7(3): 104-114 (2019). doi: