Effect of Drying Methods on Metabolites Composition of Misai Kucing (Orthosiphon stamineus) Leaves

被引:21
作者
Abdullah, Sriyana [1 ]
Shaari, Abdul Razak [1 ]
Azimi, Adli [1 ]
机构
[1] Univ Malaysia Perlis, Sch Bioproc Engn, Arau Perlis 02600, Malaysia
来源
3RD INTERNATIONAL CONFERENCE ON BIOTECHNOLOGY AND FOOD SCIENCE (ICBFS 2012) | 2012年 / 2卷
关键词
MISAI KUCING; DRYING METHOD; ANTIOXIDANT ACTIVITY; PHENOLIC CONTENT; MARKER COMPOUND;
D O I
10.1016/j.apcbee.2012.06.032
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
In this research the effects of different drying methods on the capacity of antioxidant, total phenolic and biomarker compounds concentrations of Orthosiphon stamineus leaves were studied. The biomarker compounds of the leaves studied were sinensetin (SEN) and rosmarinic acid (RA). Three different drying methods adopted were an oven at 40 degrees C, under the shade, and under the direct sunlight. Initial moisture content of the leaves was determined as 76.6% (w.b). The total antioxidant activity of the dried leaves extract was not significantly affected by the drying methods (P>0.05). However, the total phenolic content (TPC), sinensetin and rosmarinic acid content in the dried leaves extracts were significantly affected by the drying methods (P<0.05). The sinensetin was detected in samples dried in an oven (0.197mg/g) and was not detected in leaves dried under the shade or open sunlight. In contrast, the rosmarinic acid was only detected in samples dried under the shade (0.303mg/g). (C) 2012 Published by Elsevier B. V. Selection and/or peer review under responsibility of Asia-Pacific Chemical, Biological & Environmental Engineering Society
引用
收藏
页码:178 / 182
页数:5
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