Subcritical water extraction of 6-gingerol and 6-shogaol from zingiber officinale

Nowadays, natural products extract as a nutritional supplement becomes a part of healthy lifestyle. However, numerous scientific evidences suggested that the processing methods that mainly use organic solvents in extraction processes may result an undesired toxic residues in the product. Thus, the s...

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Main Author:	Md. Sarip, Mohd. Sharizan
Format:	Thesis
Language:	English
Published:	2012
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/33417/1/MohdSharizanMdSaripMFKK2012.pdf
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id	my-utm-ep.33417
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spelling	my-utm-ep.334172021-05-27T07:02:36Z Subcritical water extraction of 6-gingerol and 6-shogaol from zingiber officinale 2012-12 Md. Sarip, Mohd. Sharizan TP Chemical technology Nowadays, natural products extract as a nutritional supplement becomes a part of healthy lifestyle. However, numerous scientific evidences suggested that the processing methods that mainly use organic solvents in extraction processes may result an undesired toxic residues in the product. Thus, the so called ‘green’ solvent that is water seems to be best alternative to substitute the organic solvent in the natural herb extraction process. In this study, the effect of subcritical water extraction (SWE) was employed for the extraction of bioactive compounds from zingiber officinale namely 6-gingerol, 6-shogaol and 10-gingerol. Two types of SWE equipment which are ASE 200 and CLEAR SWE prototype had been utilized. The ASE 200 with the capacity of 24 ml was used to evaluate the performance of the CLEAR SWE prototype with capacity of 1000 ml. Three parameters were manipulated in the SWE optimization process that are extraction temperature (100 to 200°C), static extraction time (10-60 minutes) and solvent to sample ratio (28/3-28/1 ml/g) at a fixed pressure of 3.5 MPa. The analysis was done using the High Performance Liquid Chromatography. Two main bioactive compounds namely 6- gingerol and 6-shogaol were extracted with the traces of 10-gingerol. The extraction and fractionation of 6-gingerol and 6-shogaol were obtained at the lower and higher temperature; respectively. The optimum conditions for the 6-gingerol was at the temperature of 130°C, in 30 minutes and solvent to sample ratio of 28/2 ml/g with the overall mass transfer coefficient of 8.1179 x10 -7 m/s. Meanwhile the optimum condition for the 6-shogaol was at the temperature of 170°C, in 20 minutes and solvent to ratio of 28/2 ml/g with the overall mass transfer coefficient of 18.3764 x 10-7 m/s. It is found that the ginger bioactive compounds will be started to degrade at a temperature above 180 °C. 2012-12 Thesis http://eprints.utm.my/id/eprint/33417/ http://eprints.utm.my/id/eprint/33417/1/MohdSharizanMdSaripMFKK2012.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:69960?site_name=Restricted Repository masters Universiti Teknologi Malaysia, Faculty of Chemical Engineering Faculty of Chemical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Md. Sarip, Mohd. Sharizan Subcritical water extraction of 6-gingerol and 6-shogaol from zingiber officinale
description	Nowadays, natural products extract as a nutritional supplement becomes a part of healthy lifestyle. However, numerous scientific evidences suggested that the processing methods that mainly use organic solvents in extraction processes may result an undesired toxic residues in the product. Thus, the so called ‘green’ solvent that is water seems to be best alternative to substitute the organic solvent in the natural herb extraction process. In this study, the effect of subcritical water extraction (SWE) was employed for the extraction of bioactive compounds from zingiber officinale namely 6-gingerol, 6-shogaol and 10-gingerol. Two types of SWE equipment which are ASE 200 and CLEAR SWE prototype had been utilized. The ASE 200 with the capacity of 24 ml was used to evaluate the performance of the CLEAR SWE prototype with capacity of 1000 ml. Three parameters were manipulated in the SWE optimization process that are extraction temperature (100 to 200°C), static extraction time (10-60 minutes) and solvent to sample ratio (28/3-28/1 ml/g) at a fixed pressure of 3.5 MPa. The analysis was done using the High Performance Liquid Chromatography. Two main bioactive compounds namely 6- gingerol and 6-shogaol were extracted with the traces of 10-gingerol. The extraction and fractionation of 6-gingerol and 6-shogaol were obtained at the lower and higher temperature; respectively. The optimum conditions for the 6-gingerol was at the temperature of 130°C, in 30 minutes and solvent to sample ratio of 28/2 ml/g with the overall mass transfer coefficient of 8.1179 x10 -7 m/s. Meanwhile the optimum condition for the 6-shogaol was at the temperature of 170°C, in 20 minutes and solvent to ratio of 28/2 ml/g with the overall mass transfer coefficient of 18.3764 x 10-7 m/s. It is found that the ginger bioactive compounds will be started to degrade at a temperature above 180 °C.
format	Thesis
qualification_level	Master's degree
author	Md. Sarip, Mohd. Sharizan
author_facet	Md. Sarip, Mohd. Sharizan
author_sort	Md. Sarip, Mohd. Sharizan
title	Subcritical water extraction of 6-gingerol and 6-shogaol from zingiber officinale
title_short	Subcritical water extraction of 6-gingerol and 6-shogaol from zingiber officinale
title_full	Subcritical water extraction of 6-gingerol and 6-shogaol from zingiber officinale
title_fullStr	Subcritical water extraction of 6-gingerol and 6-shogaol from zingiber officinale
title_full_unstemmed	Subcritical water extraction of 6-gingerol and 6-shogaol from zingiber officinale
title_sort	subcritical water extraction of 6-gingerol and 6-shogaol from zingiber officinale
granting_institution	Universiti Teknologi Malaysia, Faculty of Chemical Engineering
granting_department	Faculty of Chemical Engineering
publishDate	2012
url	http://eprints.utm.my/id/eprint/33417/1/MohdSharizanMdSaripMFKK2012.pdf
_version_	1747816156178153472

Subcritical water extraction of 6-gingerol and 6-shogaol from zingiber officinale

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