PERFORM Publications

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Title		Authors	PubMed ID
1	Lignin phenol abundances and ratios are modulated by their interactions with iron hydroxides in sediments	Moritz A; Ezzati M; Gélinas Y;	41500137 CHEMBIOCHEM
2	Isolation of Marine Bacteria through a "Bait" Approach	Pakseresht B; Schiffman Z; McLatchie S; Coulombe P; Soullane S; Imfeld A; Gélinas Y; Walsh D; Findlay B;	41297029 CHEMBIOCHEM
3	Insights from multiple stable isotopes (C, N, Cl) into the photodegradation of herbicides atrazine and metolachlor	Levesque-Vargas M; Ohlund L; Sleno L; Gélinas Y; Höhener P; Ponsin V;	39716600 CHEMBIOCHEM
4	Isotopic and molecular analyses of n-alkanes in a temporal study of coastal sediment contributions to organic carbon degradation induced by algal bloom and terrestrial runoff	Mirzaei Y; Douglas PMJ; Gélinas Y;	39700996 CHEMBIOCHEM
5	Investigating the kinetics of marine and terrestrial organic carbon incorporation and degradation in coastal bulk sediment and water settings through isotopic lenses	Mirzaei Y; Gélinas Y;	39117203 CHEMBIOCHEM
6	Organic matter preservation through complexation with iron minerals in two basins of a dimictic boreal lake with contrasting deep water redox regimes	Joshani A; Mirzaei Y; Barber A; Balind K; Gobeil C; Gélinas Y;	38499107 CHEMBIOCHEM
7	Using 13C enriched acetate in isotope labelling incubation experiments: a note of caution	Leone F; Imfeld A; Mirzaei Y; Gélinas Y;	38097918 CHEMBIOCHEM
8	Deep ocean microbial communities produce more stable dissolved organic matter through the succession of rare prokaryotes	LaBrie R; Péquin B; Fortin St-Gelais N; Yashayaev I; Cherrier J; Gélinas Y; Guillemette F; Podgorski DC; Spencer RGM; Tremblay L; Maranger R;	35857452 CHEMBIOCHEM
9	Pre- and post-industrial levels of polycyclic aromatic hydrocarbons in sediments from the Estuary and Gulf of St. Lawrence (eastern Canada)	Corminboeuf A; Montero-Serrano JC; St-Louis R; Dalpé A; Gélinas Y;	34871900 CHEMBIOCHEM
10	Elemental, isotopic, and spectroscopic assessment of chemical fractionation of dissolved organic matter sampled with a portable reverse osmosis system.	Ouellet A, Catana D, Plouhinec JB, Lucotte M, Gélinas Y	18504986 CHEMBIOCHEM
11	Anthropogenic and natural methane emissions from a shale gas exploration area of Quebec, Canada.	Pinti DL, Gelinas Y, Moritz AM, Larocque M, Sano Y	27267724 CHEMBIOCHEM
12	Persistence of Escherichia coli in batch and continuous vermicomposting systems.	Hénault-Ethier L, Martin VJ, Gélinas Y	27499290 BIOLOGY
13	Food-Web Complexity in Guaymas Basin Hydrothermal Vents and Cold Seeps.	Portail M, Olu K, Dubois SF, Escobar-Briones E, Gelinas Y, Menot L, Sarrazin J	27683216 CHEMBIOCHEM
14	Preservation of organic matter in marine sediments by inner-sphere interactions with reactive iron.	Barber A, Brandes J, Leri A, Lalonde K, Balind K, Wirick S, Wang J, Gélinas Y	28336935 CHEMBIOCHEM
15	Differences in Riverine and Pond Water Dissolved Organic Matter Composition and Sources in Canadian High Arctic Watersheds Affected by Active Layer Detachments.	Wang JJ, Lafrenière MJ, Lamoureux SF, Simpson AJ, Gélinas Y, Simpson MJ	29301070 CHEMBIOCHEM

Title:	Persistence of Escherichia coli in batch and continuous vermicomposting systems.
Authors:	Hénault-Ethier L, Martin VJ, Gélinas Y
Link:	https://www.ncbi.nlm.nih.gov/pubmed/27499290?dopt=Abstract
Publication:
Keywords:
PMID:	27499290	Category:	Waste Manag	Date Added:	2019-05-31
Dept Affiliation:	BIOLOGY 1 Department of Biology, Concordia University, Montreal, QC, Canada; GEOTOP Research Center, Montreal, QC, Canada. 2 Department of Biology, Concordia University, Montreal, QC, Canada. 3 GEOTOP Research Center, Montreal, QC, Canada; Department of Chemistry and Biochemistry, Concordia University, Montreal, QC, Canada. Electronic address: yves.gelinas@concordia.ca.

Description:

Persistence of Escherichia coli in batch and continuous vermicomposting systems.

Waste Manag. 2016 Oct;56:88-99

Authors: Hénault-Ethier L, Martin VJ, Gélinas Y

Abstract

Vermicomposting is a biooxidation process in which epigeicearthworms act in synergy with microbial populations to degrade organic matter. Vermicomposting does not go through a thermophilic stage as required by North American legislations for pathogen eradication. We examined the survival of a Green Fluorescent Protein (GFP) labeled Escherichia coli MG1655 as a model for the survival of pathogenic bacteria in both small-scale batch and medium-scale continuously-operated systems to discern the influence of the earthworm Eisenia fetida, nutrient content and the indigenous vermicompost microbial community on pathogen abundance. In batch systems, the microbial community had the greatest influence on the rapid decline of E. coli populations, and the effect of earthworms was only visible in microbially-impoverishedvermicomposts. No significant earthworm density-dependent relationship was observed on E. coli survival under continuous operation. E. coli numbers decreased below the US EPA compost sanitation guidelines of 10(3)Colony Forming Units (CFU)/g (dry weight) within 18-21days for both the small-scale batch and medium-scale continuous systems, but it took up to 51days without earthworms and with an impoverished microbial community to reach the legal limit. Nutrient replenishment (i.e. organic carbon) provided by continuous feed input did not appear to extend E. coli survival. In fact, longer survival of E. coli was noticed in treatments where less total and labile sugars were available, suggesting that sugars may support potentially antagonist bacteria in the vermicompost. Total N, pH and humidity did not appear to affect E. coli survival. Several opportunistic human pathogens may be found in vermicompost, and their populations are likely kept in check by antagonists.

PMID: 27499290 [PubMed - indexed for MEDLINE]

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