Paper Information

Journal:   JOURNAL OF RESEARCH AND INNOVATION IN FOOD SCIENCE AND TECHNOLOGY   2017 , Volume 6 , Number 3 #M0037; Page(s) 221 To 234.
 
Paper: 

OPTIMIZING THE EXTRACTION PROCESS OF OIL FROM BLACK CUMIN SEEDS BY USING PULSED ELECTRIC FIELD (PEF) PRETREATMENT

 
 
Author(s):  BAKHSHABADI HAMID*, MIRZAEI HABIBOLLAH, GHODSVALI ALIREZA, JAFARI SEID MAHDI, ZIAIIFAR AMAN MOHAMMAD, BIGBABAIE ADEL
 
* GORGAN UNIVERSITY OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, GORGAN, IRAN
 
Abstract: 

In this study, different electric field intensity (0.25, 3.25 and 6.25 kV/cm) and different number of pulse (10, 30 and 50) were used for optimizing the process of oil extraction from black cumin seeds using pulsed electric field pretreatment and then after using these pretreatments, the oil of seeds was extracted with screw press with different rotation speeds (11, 34 and 57 rpm), then parameters including oil extraction yield, color index, oxidative stability, refractive index and a and total phenolic of the extracted oil were studied. Statistical analysis and process optimization was performed with the use of response surface methodology (RSM). The results showed that oil color index increased with increasing of electric field intensity and the number of pulses, but oxidative stability of obtained oil decreased. The results also showed that the studied parameters had non-significant effects on the refractive index; moreover the oil extraction yield reduced by increasing the rotational speed of the screw press. Increasing the electric field intensity and the number of pulses to enhance the oil extraction yield and total phenolic was but a further increase of these variables, the two parameters decreased. According to the process optimization results, it might be stated that with applying electric field intensity for about 1.18 kV/cm number of pulse 48 and screw-rotation speed of the press of 11.01 rpm, the maximum oil extraction yield, oxidative stability and total phenolic components were reached.

 
Keyword(s): BLACK CUMIN SEEDS, OPTIMIZATION OIL EXTRACTION, PULSED ELECTRIC FIELD, SCREW ROTATION SPEED
 
References: 
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