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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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spelling my.utm.925652021-09-30T15:11:40Z http://eprints.utm.my/id/eprint/92565/ Performance of sonic assisted solvent mimicry using water on ginger bioactive compounds extraction 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 NonPeerReviewed application/pdf en http://eprints.utm.my/id/eprint/92565/1/SyaripahZaImahPMJIIT2016.pdf Syed Jaapar, Syaripah Za'imah (2016) Performance of sonic assisted solvent mimicry using water on ginger bioactive compounds extraction. PhD thesis, Universiti Teknologi Malaysia. http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:132796
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
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
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
publishDate 2016
url http://eprints.utm.my/id/eprint/92565/1/SyaripahZaImahPMJIIT2016.pdf
http://eprints.utm.my/id/eprint/92565/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:132796
_version_ 1713199750524698624
score 13.211869

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