Title: Growth of Dioscorea membranacae Pierre ex Prain & Burkill and dioscorealide B content at different harvest times
Online: http:/­/­dspace.­library.­tu.­ac.­th…
Creator: Panumart Rithichai
Arunporn Itharat
Yaowapha Jirakiattikul
Srisopa Ruangnoo
Type: Article
Languge: en
Date: 2556-10-08T07:07:50Z
2013
Description: Rhizomes of Dioscorea membranacea Pierre ex Prain & Burkill, popularly known as Hua-Khao-Yen-Tai, have been used to treat cancer in Thai traditional medicine. The bioactive compound isolated from the rhizome is dioscorealide B (DB), a naphthofuranoxepin which reduces inflammation and exhibits cytotoxic properties against human breast cancer cells. In order to produce rhizomes of sufficient quality for medicinal use, optimal harvest times must be identified. The aims of the current study were therefore to examine growth and DB content of D. membranacea rhizomes at differing harvest times. Mother rhizomes (MR) 10-16 cm in length were individually cultivated in 50 cm diameter pots. Shoot growth, rhizome development and DB content were examined at 3-monthly intervals to 15 months after planting (MAP). The number of shoots and dry weight increased significantly throughout the experimental period, while the DB content of the MR was 4.0% w/w at commencement. Degradation of the MR was evident at 9 MAP, with eventual shrivelling at 12 MAP. The daughter rhizomes which formed at 3 MAP and progressively developed throughout the experimental period, exhibited 41.8 g dry weight plant-1 and 2.7 %w/w DB content at 15 MAP.
Subject: Dioscorea membranacea
Dioscorealide B
Harvest time
Rhizome
Shoot growth
Identifier: http://dspace.library.tu.ac.th/handle/3517/6711
Source: Thammasat Digital Library

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