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Chemical and Biochemical Engineering Quarterly, Vol. 33 No. 2, 2019.

Original scientific paper

https://doi.org/10.15255/CABEQ.2018.1525

High-Voltage Electric Discharge Extraction of Bioactive Compounds from the Cocoa Bean Shell

S. Jokić orcid id orcid.org/0000-0003-0678-7660 ; Josip Juraj Strossmayer University of Osijek, Faculty of Food Technology Osijek, Franje Kuhača 20, 31000 Osijek, Croatia
N. Pavlović ; Josip Juraj Strossmayer University of Osijek, Faculty of Medicine Osijek, Josipa Huttlera 4, 31000 Osijek, Croatia
A. Jozinović orcid id orcid.org/0000-0001-9627-1013 ; Josip Juraj Strossmayer University of Osijek, Faculty of Food Technology Osijek, Franje Kuhača 20, 31000 Osijek, Croatia
Đ. Ačkar orcid id orcid.org/0000-0003-4257-2907 ; Josip Juraj Strossmayer University of Osijek, Faculty of Food Technology Osijek, Franje Kuhača 20, 31000 Osijek, Croatia
J. Babić orcid id orcid.org/0000-0002-6453-1850 ; Josip Juraj Strossmayer University of Osijek, Faculty of Food Technology Osijek, Franje Kuhača 20, 31000 Osijek, Croatia
D. Šubarić ; Josip Juraj Strossmayer University of Osijek, Faculty of Food Technology Osijek, Franje Kuhača 20, 31000 Osijek, Croatia

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Abstract

This study is focused on the application of high-voltage electric discharge (HVED) to recover some bioactive compounds from the cocoa bean shell. Different extraction times (30, 60, 90 min), frequencies (40, 70, 100 Hz) and solvent-solid ratios (10, 30 and
50 mL g–1) were used to obtain cocoa bean shell extracts. Desired bioactive compounds, methylxanthines and phenolic compounds were measured in obtained extracts by high-pressure liquid chromatography with diode array detector. The obtained extracts
showed that theobromine was the most abundant, ranging from 2530.13 to 6031.51 mg kg–1, while caffeine content was in the range from 316.08 to 849.88 mg kg–1. In addition, significant amounts of phenolic compounds were found, namely catechin (115.91 to 284.33 mg kg–1), epicatechin (20.20 to 358.90 mg kg–1), and gallic acid (80.28 to 219.17 mg kg–1). Results showed that different parameters of HVED extraction have statistically significant influence on cocoa bean shell composition, suggesting how this byproduct can be used in the production of valuable extracts.







This work is licensed under a Creative Commons Attribution 4.0 International License.

Keywords

cocoa bean shell; by-product; high-voltage electric discharge; bioactive compounds

Hrčak ID:

223898

URI

https://hrcak.srce.hr/223898

Publication date:

31.7.2019.

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