Natural valuable compound extraction from onion by-products using a pulsed electric field

Authors

  • M. Gharibi.Tehrani Islamic Azad University
  • A. H. Elhamirad Islamic Azad University
  • E. Azarpazhooh Khorasan Razavi Agricultural and Natural Resources Research and Education Center
  • A. Pedramnia Islamic Azad University
  • P. Sharayei Khorasan Razavi Agricultural and Natural Resources Research and Education Center

DOI:

https://doi.org/10.26577/ijbch-2019-1-i22

Abstract

Onion by-products, a waste generated from fruit processing industry, is a potential source of phenolic compounds that are known for their anti-oxidative properties. The influence of pulsed electric field
(PEF) treatment on the bioactive compounds from onion by-products at different pulse voltage (PV); 2000,
4000, 6000Vand number of pulse (NP); 40, 50, 60 has been investigated. Response surface methodology,
based on a Face-Centered Experimental Design (FCED) was used to determine optimal PEF treatment and
optimize extraction yield, antioxidant strength, total phenolic compound (TPC),and quercetin content. The
experimental data were fitted to a second‐order polynomial equation and also profiled into the corresponding 3‐D contour plots. Optimal extraction conditions were as follows:PV were 4102.97 V and and NP 51.43. Under these conditions, TPC, DPPH, FRAP,Quercetin and extraction yield were 48.912 ± 6 mg/kg, 50.366 ± 1 %, 465.414 ± 5 μmFe2/l, 31.761 ± 0.5 mg/100g and 88.107 ± 1% ; respectively and matching well with the predicted value. The results demonstrated that PEF could be a very effective method for continuous
extraction of natural compounds.

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Published

2019-08-09

How to Cite

Gharibi.Tehrani, M., A. H. Elhamirad, E. Azarpazhooh, A. Pedramnia, and P. Sharayei. 2019. “Natural Valuable Compound Extraction from Onion by-Products Using a Pulsed Electric Field”. International Journal of Biology and Chemistry 12 (1):171-80. https://doi.org/10.26577/ijbch-2019-1-i22.