The yield and biological activity (LC50) of rotenone extracted from Derris elliptica

The objective of this research was to determine the effect of the processing parameters on the extraction yield of rotenoids resin, rotenone and their biological activities (LC50). The research was divided into three stages: preliminary, optimization and verification phases. Preliminary study was ca...

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Main Author: Zubairi, Saiful Irwan
Format: Thesis
Language:English
Published: 2006
Subjects:
Online Access:http://eprints.utm.my/9826/1/SaifulIrwanZubairiMFKT2006.pdf
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author Zubairi, Saiful Irwan
author_facet Zubairi, Saiful Irwan
author_sort Zubairi, Saiful Irwan
collection ePrints
description The objective of this research was to determine the effect of the processing parameters on the extraction yield of rotenoids resin, rotenone and their biological activities (LC50). The research was divided into three stages: preliminary, optimization and verification phases. Preliminary study was carried out to determine the most appropriate processing parameters for the optimization study. The optimization study was carried out using a Central Composite Design (CCD) employing the Design-Expert® software version 6.0 to determine the effects of processing parameters on the three selected response variables which were the yield of rotenoids resin, yield of rotenone and biological activity (LC50) of rotenoids resin. The processing parameters studied were the types of solvent (acetone, chloroform and ethanol), solvent-to-solid ratio (2.0 ml/g to 10.0 ml/g) and raw material particles size (0.5 mm to 5.0 mm in diameter). The theoretical maximum yield of rotenoids resin in dried roots obtained from the optimization phase was 12.26 % (w/w) and 5.99 % (w/w) for the rotenone. The multiple response variables analysis have consistently verified the theoretical results in the range of 3.62 ml/g to 4.72 ml/g (solvent-to-solid ratio) and 0.83 mm to 1.41 mm in diameter (raw material particles size) using the acetone extract. The biological activity (LC50) value of rotenoids resin was indirectly correlated to the optimum processing parameters due to inconsistency of rotenone content (mg) and the low value of LC50 which was less than 100 ppm for all treatments. This is due to the presence of other constituents in the rotenoids resin (tephrosin, 12aß-rotenolone and deguelin) which contributed to the low LC50 values. The optimization of the processing parameters resulted in an increase of yield of rotenoids resin but reduced yield of rotenone
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spelling utm.eprints-98262018-09-17T03:46:54Z http://eprints.utm.my/9826/ The yield and biological activity (LC50) of rotenone extracted from Derris elliptica Zubairi, Saiful Irwan TP Chemical technology The objective of this research was to determine the effect of the processing parameters on the extraction yield of rotenoids resin, rotenone and their biological activities (LC50). The research was divided into three stages: preliminary, optimization and verification phases. Preliminary study was carried out to determine the most appropriate processing parameters for the optimization study. The optimization study was carried out using a Central Composite Design (CCD) employing the Design-Expert® software version 6.0 to determine the effects of processing parameters on the three selected response variables which were the yield of rotenoids resin, yield of rotenone and biological activity (LC50) of rotenoids resin. The processing parameters studied were the types of solvent (acetone, chloroform and ethanol), solvent-to-solid ratio (2.0 ml/g to 10.0 ml/g) and raw material particles size (0.5 mm to 5.0 mm in diameter). The theoretical maximum yield of rotenoids resin in dried roots obtained from the optimization phase was 12.26 % (w/w) and 5.99 % (w/w) for the rotenone. The multiple response variables analysis have consistently verified the theoretical results in the range of 3.62 ml/g to 4.72 ml/g (solvent-to-solid ratio) and 0.83 mm to 1.41 mm in diameter (raw material particles size) using the acetone extract. The biological activity (LC50) value of rotenoids resin was indirectly correlated to the optimum processing parameters due to inconsistency of rotenone content (mg) and the low value of LC50 which was less than 100 ppm for all treatments. This is due to the presence of other constituents in the rotenoids resin (tephrosin, 12aß-rotenolone and deguelin) which contributed to the low LC50 values. The optimization of the processing parameters resulted in an increase of yield of rotenoids resin but reduced yield of rotenone 2006-08 Thesis NonPeerReviewed application/pdf en http://eprints.utm.my/9826/1/SaifulIrwanZubairiMFKT2006.pdf Zubairi, Saiful Irwan (2006) The yield and biological activity (LC50) of rotenone extracted from Derris elliptica. Masters thesis, Universiti Teknologi Malaysia, Faculty of Chemical and Natural Resources Engineering. http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:1224
spellingShingle TP Chemical technology
Zubairi, Saiful Irwan
The yield and biological activity (LC50) of rotenone extracted from Derris elliptica
title The yield and biological activity (LC50) of rotenone extracted from Derris elliptica
title_full The yield and biological activity (LC50) of rotenone extracted from Derris elliptica
title_fullStr The yield and biological activity (LC50) of rotenone extracted from Derris elliptica
title_full_unstemmed The yield and biological activity (LC50) of rotenone extracted from Derris elliptica
title_short The yield and biological activity (LC50) of rotenone extracted from Derris elliptica
title_sort yield and biological activity lc50 of rotenone extracted from derris elliptica
topic TP Chemical technology
url http://eprints.utm.my/9826/1/SaifulIrwanZubairiMFKT2006.pdf
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