Phosphine Residue and its Desorption from Legumes Fumigated with Phosfume Pellets

Rangaswamy, J. R. and Gunasekaran, N. (1996) Phosphine Residue and its Desorption from Legumes Fumigated with Phosfume Pellets. Lebensmittel-Wissenschaft und Technologie , 29. pp. 234-237.

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Abstract

On fumigation with 6 phosfume tablets/ton, legumes (grams) show higher free phosphine (PH3) residue than that found on their splits (dhals), blackgram showing the higher free PH3 residue of 187 Ìg. Fieldbean dhal (6 Ìg), bengalgram dhal (40 Ìg) and blackgram dhal (4 Ìg) hold about 4, 37 and 3%, respectively, of the pre-aired PH3 residue found on corresponding samples of the respective grams. Greengram and its dhal are an exception as the latter shows a higher residue (97 Ìg) than that shown by the former (71 Ìg). During 1 d airing, blackgram dhal loses 100% of the pre-aired residue, while the other grams and their dhals lose more than 70% of their corresponding residue. During storage, pre-aired samples of bengalgram dhal (11 Ìg/(kg.d)), 1 d aired samples of blackgram (4 Ìg/(kg.d)) and blackgram dhal (4 Ìg/(kg.d)) show a higher rate of desorption of PH3 residue, while 1 d aired greengram samples do not show desorption. Because of such differences in their desorption rate, different legumes have taken a different length of time to attain a nondetectable residue level. Based on extensive data collected, it is concluded that phosphine can be a suitable fumigant, based on negligible free phosphine residue during storage.

Item Type:	Article
Uncontrolled Keywords:	legumes phosfume tablets fumigation phosphine residues
Subjects:	500 Natural Sciences and Mathematics > 04 Chemistry and Allied Sciences > 26 Pesticide Chemistry 600 Technology > 08 Food technology > 22 Legumes-Pulses 600 Technology > 03 Agriculture > 05 Insect/Pest Control
Divisions:	Food Protectants and Infestation Control
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	22 Jun 2007 07:09
Last Modified:	28 Dec 2011 09:28
URI:	http://ir.cftri.res.in/id/eprint/1234

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