Effects of drying temperatures and residual moisture content on marker compounds, total phenolics and antioxidant capacity of Orthosiphon stamineus benth (Misai Kucing) leaves
Access is limited to UniMAP community.
Saved in:
Main Author: | |
---|---|
Other Authors: | |
Format: | Learning Object |
Language: | English |
Published: |
Universiti Malaysia Perlis
2011
|
Subjects: | |
Online Access: | http://dspace.unimap.edu.my/xmlui/handle/123456789/13366 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Universiti Malaysia Perlis |
Language: | English |
id |
my.unimap-13366 |
---|---|
record_format |
dspace |
spelling |
my.unimap-133662011-08-02T03:02:49Z Effects of drying temperatures and residual moisture content on marker compounds, total phenolics and antioxidant capacity of Orthosiphon stamineus benth (Misai Kucing) leaves Nor Adila, Ramlee Prof. Dr. Abdul Razak Shaari (Advisor) Misai Kucing Phenolic Antioxidant Medicinal plants Biomarker Orthos Herbal plants Orthosiphon stamineus benth Access is limited to UniMAP community. Experiments were conducted to determine effect on total phenolic, biomarker compounds and antioxidant capacity. Different temperature treatment (40, 50 and 70°C) and drying stage for different moisture content (initial, mid and final) were used in order to analyze the effect on misai kucing active constituents. Analyses were conducted on fresh, half-dried and dried leaves. The total phenolic compounds and antioxidant activity were evaluated by using the Folin-Ciocalteu method and 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging activity assay and analyzed by using UV/VIS Spectrophotometer. Rosmarinic and sinensetin acid were determined using High Performance Liquid Chromatography (HPLC). The results of showed significant differences on concentration of total phenolic compounds, rosmarinic and sinensetin acid and free radical scavenging activity when leaves were treated at different temperatures and moisture content. It is observed that the temperature treatment at 40 °C and maximum drying resulted in higher concentration of total phenolic, biomarker compounds and antioxidant capacity. It is also found that concentration of sinensetin acid increased when high temperature used. 2011-08-02T03:02:49Z 2011-08-02T03:02:49Z 2011-05 Learning Object http://hdl.handle.net/123456789/13366 en Universiti Malaysia Perlis School of Bioprocess Engineering |
institution |
Universiti Malaysia Perlis |
building |
UniMAP Library |
collection |
Institutional Repository |
continent |
Asia |
country |
Malaysia |
content_provider |
Universiti Malaysia Perlis |
content_source |
UniMAP Library Digital Repository |
url_provider |
http://dspace.unimap.edu.my/ |
language |
English |
topic |
Misai Kucing Phenolic Antioxidant Medicinal plants Biomarker Orthos Herbal plants Orthosiphon stamineus benth |
spellingShingle |
Misai Kucing Phenolic Antioxidant Medicinal plants Biomarker Orthos Herbal plants Orthosiphon stamineus benth Nor Adila, Ramlee Effects of drying temperatures and residual moisture content on marker compounds, total phenolics and antioxidant capacity of Orthosiphon stamineus benth (Misai Kucing) leaves |
description |
Access is limited to UniMAP community. |
author2 |
Prof. Dr. Abdul Razak Shaari (Advisor) |
author_facet |
Prof. Dr. Abdul Razak Shaari (Advisor) Nor Adila, Ramlee |
format |
Learning Object |
author |
Nor Adila, Ramlee |
author_sort |
Nor Adila, Ramlee |
title |
Effects of drying temperatures and residual moisture content on marker compounds, total phenolics and antioxidant capacity of Orthosiphon stamineus benth (Misai Kucing) leaves |
title_short |
Effects of drying temperatures and residual moisture content on marker compounds, total phenolics and antioxidant capacity of Orthosiphon stamineus benth (Misai Kucing) leaves |
title_full |
Effects of drying temperatures and residual moisture content on marker compounds, total phenolics and antioxidant capacity of Orthosiphon stamineus benth (Misai Kucing) leaves |
title_fullStr |
Effects of drying temperatures and residual moisture content on marker compounds, total phenolics and antioxidant capacity of Orthosiphon stamineus benth (Misai Kucing) leaves |
title_full_unstemmed |
Effects of drying temperatures and residual moisture content on marker compounds, total phenolics and antioxidant capacity of Orthosiphon stamineus benth (Misai Kucing) leaves |
title_sort |
effects of drying temperatures and residual moisture content on marker compounds, total phenolics and antioxidant capacity of orthosiphon stamineus benth (misai kucing) leaves |
publisher |
Universiti Malaysia Perlis |
publishDate |
2011 |
url |
http://dspace.unimap.edu.my/xmlui/handle/123456789/13366 |
_version_ |
1643790820023730176 |