Author:
Sukardi Sukardi,Pulungan Maimunah Hindun,Lintang Asmara Sang Norma
Abstract
This study aimed to determine the amount of energy to damage the red galangal rhizome sliced cell tissue and the amount and quality of the essential oil obtained by steam-water distillation. This study was a randomized block design, with pulsed electric field (PEF) voltage treatment starting at 1000, 2000, 3000, 4000, and 5000 V and without PEF and repeated three times. The results showed that the voltage between 3000 and 4000 V (E = 120–160 V/cm) or equivalent to 271.5–365.0 kJ/cm3 had damaged the red galangal rhizome slice cell tissue. The increase in yield due to PEF ranged from 13% to 73%, and there was no change in the value of the refractive index and specific gravity, but there was a change in the chemical composition of the essential oil constituents. The benefits of research with PEF treatment are the increase in yield and shorter distillation time.
Reference77 articles.
1. 1. Töpfl S. Pulsed electric fields (PEF) for permeability of cell membranes in food and bioprocessing applications, process and equipment design and cost analysis. 2006 https://depositonce.tu-berlin.de/bitstream/ 11303/1738/1/Dokument_49.pdf/
2. 2. Putri R. I., Syamsiana I. N., Hawa L. C and Meilany D. Aplikasi mikrokontroller pada pembangkit pulsa tegangan tinggi dengan pengaturan waktu pengolahan untuk pasteurisasi sari buah apel [Application of microcontrollers in high voltage pulse generators with processing time settings for pasteurization of apple juice]. INKOM Journal 2009; 3, 31-40.
3. 3. Walkling-Ribeiro M., Noci F., Cronin D. A., Riener J., Lyng J. G., Morgan D. J. Reduction of Staphylococcus aureus and quality changes in apple juice processed by ultraviolet irradiation, pre-heating and pulsed electric fields. J. Food Eng. 2008; 89, 267-273.
4. 4. Gachovska T. K., Adedeji A. A., Ngadi M. O. Influence of pulsed electric field energy on the damage degree in alfalfa tissue J. Food Eng. 2009; 95, 558-563.
5. 5. Sack M., Sigler J., Frenzel S., Eing C., Arnold J., Michelberger T., Frey W., Attmann F., Stukenbrock L., Müller G. Research on industrial-scale electroporation devices fostering the extraction of substances from biological tissue. Food Eng. Rev. 2010; 2, 147-156.