Citation
Markom M., . and Azhari N. A. M., . and Ismail I., . and Anuar N., . Effects of different drying methods on essential oil yield and component profile of Polygonum minus root extract. pp. 96-102. ISSN 2231-7546
Abstract
Polygonum minus is a plant rich with bioactive components that contribute to food pharmaceutical and perfume industries. However high moisture content in fresh plants will allow microbial activity that leads to the degradation of plant quality. This can be prevented by drying the fresh plants to preserve the characteristics of their bioactive components. The present work was conducted to determine the effect of different drying methods such as air-drying oven-drying (40 and 60C) and freeze-drying on essential oil (EO) yield and chemical compounds of P. minus roots. For comparison purposes all samples were extracted by maceration with n-hexane at room temperature. Then the samples were analysed and identified by using gas chromatography-mass spectrometry (GC-MS). The highest EO yield extract was obtained from freeze-drying (4.15 0.5) followed by air-drying (3.79 0.19). EO yield from oven-drying at 40 and 60C was 3.4 0.14 and 0.86 0.04 respectively. Results showed that by increasing the drying temperature the EO yield would decrease and cause a loss of major chemical compounds in the P. minus root. Air-drying was found to be the best method in preserving the presence of important chemical compound in P. minus roots such as -caryophyllene (1.43) pentadecane (4.34) hexadecanoic acid (3.91) and oleic acid (3.97).
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Abstract
Polygonum minus is a plant rich with bioactive components that contribute to food pharmaceutical and perfume industries. However high moisture content in fresh plants will allow microbial activity that leads to the degradation of plant quality. This can be prevented by drying the fresh plants to preserve the characteristics of their bioactive components. The present work was conducted to determine the effect of different drying methods such as air-drying oven-drying (40 and 60C) and freeze-drying on essential oil (EO) yield and chemical compounds of P. minus roots. For comparison purposes all samples were extracted by maceration with n-hexane at room temperature. Then the samples were analysed and identified by using gas chromatography-mass spectrometry (GC-MS). The highest EO yield extract was obtained from freeze-drying (4.15 0.5) followed by air-drying (3.79 0.19). EO yield from oven-drying at 40 and 60C was 3.4 0.14 and 0.86 0.04 respectively. Results showed that by increasing the drying temperature the EO yield would decrease and cause a loss of major chemical compounds in the P. minus root. Air-drying was found to be the best method in preserving the presence of important chemical compound in P. minus roots such as -caryophyllene (1.43) pentadecane (4.34) hexadecanoic acid (3.91) and oleic acid (3.97).
Additional Metadata
| Item Type: | Article |
|---|---|
| AGROVOC Term: | Polygonum |
| AGROVOC Term: | Drying |
| AGROVOC Term: | Essential oils |
| AGROVOC Term: | Yields |
| AGROVOC Term: | Air drying |
| AGROVOC Term: | Freeze-drying |
| AGROVOC Term: | Moisture content |
| AGROVOC Term: | Chemical compounds |
| AGROVOC Term: | Sampling |
| AGROVOC Term: | Data processing |
| Depositing User: | Mr. AFANDI ABDUL MALEK |
| Last Modified: | 24 Apr 2025 00:54 |
| URI: | http://webagris.upm.edu.my/id/eprint/8976 |
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