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Indian Journal of Natural Products and Resources (IJNPR)
[Formerly Natural Product Radiance (NPR)]
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NPR Vol.7(1) [January-February 2008] >

Title: Unexploited botanical nitrification inhibitors prepared from Karanja plant
Authors: Majumdar, Deepanjan
Keywords: Agriculture
Nitrification inhibitors
Pongamia pinnata
Issue Date: Feb-2008
Publisher: CSIR
IPC CodeInt. cl.8 C05C, C09K 17/00
Abstract: Karanjin, a furanoflavonoid (3-methoxy furano–2', 3', 7, 8-flavone, C18H12O4), is the non-fatty component of oil extracted from the seeds of Karanja tree (Pongamia pinnata Pierre syn. P. glabra Vent.). Karanjin content in seeds is highly variable yielding up to 1.25% (w/w). It is reported as early as in 1925, has been found to be a very potent nitrification inhibitor (NI), sometimes comparable or even more potent than a few commercialized NIs in soils but unfortunately has not been used widely in agricultural fields or commercialized as a nitrification inhibitor. It has also been found to minimize nitrous oxide (N2O) emissions from soil in vitro. The use of karanjin as a nitrification inhibitor is yet to be made in field and hence, more research on karanjin in relation to cost effective extraction and purification process etc. should be given an emphasis. In the present communication an attempt has been made to give an up-to-date account of unexploited botanical nitrification inhibitors prepared from karanja plant.
Page(s): 58-67
ISSN: 0975-1092 (Online); 0972-592X (Print)
Source:NPR Vol.7(1) [January-February 2008]

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