Abstract
This study introduced the potential of microwave application in the determination of alkaloid in Dioscorea hispida rhizome. This microwave device is used to measure the coefficient permitivity of microwave level at rhizome surface using mechanical probe. With the same rhizomes, 40 grams was selected for chemical analysis at a laboratory for the programme of East Coastal Economic Regions - Kementerian Pengajan Tinggi, Universiti Sultan Zainal Abidin, Malaysia (ECER-KPT UniSZA). The sample were selected from 12 portion of 2 plants (I and B) collected from Kampung Kudat, Ajil, Terengganu, Malaysia. The result show that the correlation between microwave level and weight of alkaloid with regression, R2 is >0.8 is acceptable. Using SPSS, the ANOVA value shows significant correlation between microwave level and weight of alkaloid >0.05. This work is grouped as nondestructive method to detect the dioscorine which is one of the alkaloid components in the rhizome. Keyword: alkaloid of dioscorea, rapid detection device, alkaloid detection, Dioscorea hispida, microwave sensor
Highlights
Dioscorea hispida is a poisonous plant where scientific study have shown that its rhizome contains toxic alkaloid constituents, dioscorine
MATERIALS AND METHOD Two plants of D.hispida named as plant A and plant B, were collected from Kampung Kudat, Ajil, Terengganu, Malaysia
The correlation square, R2 indicated 0.806 which mean that the magnitude of the reflection coefficient had strongly linear correlate with the alkaloid level of D.hispida
Summary
Dioscorea hispida is a poisonous plant where scientific study have shown that its rhizome contains toxic alkaloid constituents, dioscorine. D.hispida is one of the most economically important yam species, which serves as a staple food for millions of people in tropical and subtropical countries (Hanh [3]; Udensi [10]) and the only species of which most of the leaves have 3 leaflets and have no aerial rhizomes (Jill and Linda [5]). This plant is classified as a wild creeping and climbing plant which can grow up to 20 meters in height (Sharifah [9]). Hudzari et al, (2011) mentioned that the advancement of technology should be introduced for agriculture research in D. hispida within the area of harvesting process, dioscorine removal and dioscorine detection devices [4]
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