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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Toxicological effects of the waste of the sugarcane industry, used as agricultural fertilizer, on the test system Allium cepa

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Author(s):
Anacleto, Leonardo Ramos ; Roberto, Matheus Mantuanelli ; Marin-Morales, Maria Aparecida
Total Authors: 3
Document type: Journal article
Source: Chemosphere; v. 173, p. 31-42, APR 2017.
Web of Science Citations: 9
Abstract

Sugarcane is cultivated in tropical countries for sugar and ethanol production. In Brazil, this culture is among the most profitable with a production of 658.7 million tons/harvest. Sugarcane filter cake (SCFC) is a waste rich in organic matter and micronutrients, but also contains toxic metals. As it has been used as fertilizer and there is not enough knowledge about its environmental impacts, this work assessed the genotoxicogenetic effects of raw SCFC and associations with soil and sugarcane bagasse (SCB), by Allium cepa tests. Six associations of SCFC + soil and five associations of SCFC + soil + SCB were tested at three moments of degradation: initial (TO), 3 and 6 months (T1 and T2). Genotoxicogenetic assays were performed with solid substrates of these associations and with their respective aqueous extracts. Chemical analysis showed a decrease in metals, total organic carbon and nitrogen after 6 months of biodegradation, complying with Brazilian laws. In general, the combination of SCFC + soil + SCB was better than using only SCFC. TO solubilized samples of different associations composed by highest quantities of SCFC inhibited the MI and induced CA without presenting mutagenicity (except for 75%-SCFC + soil + SCB). Tl samples showed more cytotoxicity than TO samples, and also presented genotoxic and mutagenic effects. Solid substrate and solubilized associations of SCFC + soil + SCB of T2 samples had no toxicity. These results suggest 6 months of biodegradation and the SCB adding as effective to reduce toxicogenetic effects induced by SCFC. Also, small proportions of SCFC interfered less on the A. cepa test-system when compared with those containing high quantities of residue. (C) 2017 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 12/02812-0 - ECOTOXICGENETIC EVALUATION OF PRESSMUD, GET IN IMPROVEMENT OF CANE SUGAR, BEFORE AND AFTER BIODEGRADATION PROCESS
Grantee:Leonardo Ramos Anacleto
Support Opportunities: Scholarships in Brazil - Master