Performance of sonic assisted solvent mimicry using water on ginger bioactive compounds extraction

The uses of water in subcritical conditions have several drawbacks, which include safety features, increase of production costs and possible degradation of bioactive compounds due to high operating conditions. To overcome these problems, sonic energy and entrainer were used as external interventions...

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Main Author:	Syed Jaapar, Syaripah Za'imah
Format:	Thesis
Language:	English
Published:	2016
Subjects:	T Technology (General)
Online Access:	http://eprints.utm.my/id/eprint/92565/1/SyaripahZaImahPMJIIT2016.pdf
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id	my-utm-ep.92565
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spelling	my-utm-ep.925652021-09-30T15:11:40Z Performance of sonic assisted solvent mimicry using water on ginger bioactive compounds extraction 2016 Syed Jaapar, Syaripah Za'imah T Technology (General) The uses of water in subcritical conditions have several drawbacks, which include safety features, increase of production costs and possible degradation of bioactive compounds due to high operating conditions. To overcome these problems, sonic energy and entrainer were used as external interventions in decreasing the dielectric constant of water at milder operating conditions. The extraction efficiencies were compared and related to the solubility curve of ginger bioactive compounds in hot water, which was calculated using conductor-like screening model for real solvents (COSMO-RS). A sonic-assisted water extraction (SAWE) prototype with 1.5 liter capacity was designed and fabricated using a high frequency sonication probe (800kHz, Shinka Industry Co., Japan). The effect of low (28 kHz) and high (800 kHz) frequencies of sonication in the extraction of four major ginger bioactive compounds (6-, 8-, 10-gingerol, and 6-shogaol) were compared. Six parameters were studied, which were mean particle size (MPS, mm), time of extraction (15 to 60 minutes), applied power (40 to 80 Watt), sample to solvent ratio (w/v), temperature of extraction (25 to 45 oC), and the percentage of entrainer (5 to 15 %, v/v). The optimum conditions for the high frequency SAWE prototype were MPS 0.89- 1.77mm, 45 minutes, 40W applied power, 1:30 (w/v) and 45 minutes. The concentration and recovery of 6-gingerol from the high frequency of the SAWE prototype was 2.69 times higher than the low frequency of SAWE at the optimum conditions. The performance of high frequency SAWE was improved with a pump around process with distilled water (13.0681±0.0210mg/g), which was slightly higher than with 10% ethanol as the solvent in the batch system (12.9733±0.3186mg/g) for 6-gingerol extract. It was found that milder operating conditions can be achieved using high frequency SAWE compared to subcritical water extraction (135- 200oC, 0.1 MPa). 2016 Thesis http://eprints.utm.my/id/eprint/92565/ http://eprints.utm.my/id/eprint/92565/1/SyaripahZaImahPMJIIT2016.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:132796 phd doctoral Universiti Teknologi Malaysia Malaysia-Japan International Institute of Technology (MJIIT)
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	T Technology (General)
spellingShingle	T Technology (General) Syed Jaapar, Syaripah Za'imah Performance of sonic assisted solvent mimicry using water on ginger bioactive compounds extraction
description	The uses of water in subcritical conditions have several drawbacks, which include safety features, increase of production costs and possible degradation of bioactive compounds due to high operating conditions. To overcome these problems, sonic energy and entrainer were used as external interventions in decreasing the dielectric constant of water at milder operating conditions. The extraction efficiencies were compared and related to the solubility curve of ginger bioactive compounds in hot water, which was calculated using conductor-like screening model for real solvents (COSMO-RS). A sonic-assisted water extraction (SAWE) prototype with 1.5 liter capacity was designed and fabricated using a high frequency sonication probe (800kHz, Shinka Industry Co., Japan). The effect of low (28 kHz) and high (800 kHz) frequencies of sonication in the extraction of four major ginger bioactive compounds (6-, 8-, 10-gingerol, and 6-shogaol) were compared. Six parameters were studied, which were mean particle size (MPS, mm), time of extraction (15 to 60 minutes), applied power (40 to 80 Watt), sample to solvent ratio (w/v), temperature of extraction (25 to 45 oC), and the percentage of entrainer (5 to 15 %, v/v). The optimum conditions for the high frequency SAWE prototype were MPS 0.89- 1.77mm, 45 minutes, 40W applied power, 1:30 (w/v) and 45 minutes. The concentration and recovery of 6-gingerol from the high frequency of the SAWE prototype was 2.69 times higher than the low frequency of SAWE at the optimum conditions. The performance of high frequency SAWE was improved with a pump around process with distilled water (13.0681±0.0210mg/g), which was slightly higher than with 10% ethanol as the solvent in the batch system (12.9733±0.3186mg/g) for 6-gingerol extract. It was found that milder operating conditions can be achieved using high frequency SAWE compared to subcritical water extraction (135- 200oC, 0.1 MPa).
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Syed Jaapar, Syaripah Za'imah
author_facet	Syed Jaapar, Syaripah Za'imah
author_sort	Syed Jaapar, Syaripah Za'imah
title	Performance of sonic assisted solvent mimicry using water on ginger bioactive compounds extraction
title_short	Performance of sonic assisted solvent mimicry using water on ginger bioactive compounds extraction
title_full	Performance of sonic assisted solvent mimicry using water on ginger bioactive compounds extraction
title_fullStr	Performance of sonic assisted solvent mimicry using water on ginger bioactive compounds extraction
title_full_unstemmed	Performance of sonic assisted solvent mimicry using water on ginger bioactive compounds extraction
title_sort	performance of sonic assisted solvent mimicry using water on ginger bioactive compounds extraction
granting_institution	Universiti Teknologi Malaysia
granting_department	Malaysia-Japan International Institute of Technology (MJIIT)
publishDate	2016
url	http://eprints.utm.my/id/eprint/92565/1/SyaripahZaImahPMJIIT2016.pdf
_version_	1747818604755156992

Performance of sonic assisted solvent mimicry using water on ginger bioactive compounds extraction

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