Bioconversion of olive-mill dry residue by Fusarium lateritium and subsequent impact on its phytotoxicity

Sampedro, Inmaculada; D’Annibale, Alessandro; Ocampo, J. A.; Stazi, Silvia Rita; García-Romera, Inmaculada

doi:10.1016/j.chemosphere.2005.01.093

Cited by 38 publications

(29 citation statements)

References 29 publications

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“…rigida takes 20 weeks to reduce the phytotoxicity of DOR (Sampedro et al, 2005). However we found that …”

Section: Resultscontrasting

confidence: 53%

“…It is known that C. rigida is capable of transforming certain phytotoxic monomeric phenols into non-phytotoxic polymeric phenols from the DOR (Casa et al, 2003). The degree of polymerisation of these phenols may limit the accessibility via plant cell membrane, thus avoiding phytotoxicity (Sampedro et al, 2005). It has been previously reported that the fungus C.…”

Section: Resultsmentioning

confidence: 99%

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Reduced dry olive residue phytotoxicity in the field by the combination of physical and biological treatments

Aranda

Sampedro

García‐Sánchez

et al. 2012

J. Soil Sci. Plant Nutr.

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Olive oil extraction generates large amounts of olive mill residues (DOR) which may be used as organic fertilizer. The influence of a combination of physical fractionation and saprobe fungal incubation on the phytotoxicity of DOR was studied. The physical fractions of DOR, obtained following extraction using ethyl acetate (EDOR) and water (ADOR) were less phytotoxic than DOR with respect to the shoot dry weight of tomato. There was no relationship between the total phenol content of the different DOR physical fractions and their phytotoxicity. The saprophytic fungus Coriolopsis rigida reduced DOR and ADOR phytotoxicity and eliminated the phytotoxicity of EDOR. However, unlike the physical treatments of DOR, the decrease in the phenol content of EDOR and ADOR caused by C. rigida was closely paralleled to the decrease in their phytotoxicity. After 30 days of incubation, C. rigida was able to eliminate the phytotoxicity of EDOR on tomato plants grown in the field.

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“…rigida takes 20 weeks to reduce the phytotoxicity of DOR (Sampedro et al, 2005). However we found that …”

Section: Resultscontrasting

confidence: 53%

Section: Resultsmentioning

confidence: 99%

Reduced dry olive residue phytotoxicity in the field by the combination of physical and biological treatments

Aranda

Sampedro

García‐Sánchez

et al. 2012

J. Soil Sci. Plant Nutr.

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“…Such inhibition was observed during anaerobic degradation of vegetable oil in freshwater sediments (Li et al, 2001(Li et al, , 2005. Vegetable oils and animal fats have been reported to be phytotoxic (Forster, 1992;Sampedro et al, 2005) and to exert other toxic effects on fish (Pustowka et al, 2000) in aquatic ecosystems. Furthermore, vegetable oil spills were observed to cause lethal toxicity to mussels, and dehydration and formation of intestinal lesions to birds and aquatic mammals (Mudge, 1995).…”

Section: Resultsmentioning

confidence: 97%

Assessment of sediment toxicity during anaerobic biodegradation of vegetable oil using Microtox® and Hyalella azteca bioassays

Lee

Cobanli

et al. 2007

Environmental Toxicology

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ABSTRACT:The potential ecological impacts of anaerobic degradation of vegetable oil on freshwater sediments were investigated. Sediment toxicity was evaluated using two regulatory biotests: the Microtox 1 Solid Phase Test and an amphipod (Hyalella azteca) bioassay. The results of the Microtox test showed that the toxicity of the vegetable-oil-contaminated sediments (about 17-33 g oil/kg dry sediments) increased after 2 weeks incubation and then decreased to near background levels after incubation for 8 weeks under anaerobic conditions. The amphipod toxicity bioassay showed that the toxicity of fresh contaminated sediments decreased over time and returned to background levels within 8 weeks. These results suggest that the impact of vegetable oils on organisms within sediments may be limited. To account for the significance of environmental conditions, additional studies over a wide range of incubation conditions (e.g., temperature, nutrient concentration) and other test organisms at various trophic levels are recommended for both acute and chronic toxicity assessment. #

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“…The remediation of OMWW has been a subject of numerous research studies, which mainly pertained to catalysis-based oxygenation with various inorganic catalysts (Mantzavinos and Kalogerakis 2005) and biological treatment with laccase-or peroxidase (POD)-producing fungi (Sayadi and Ellouz 1995;D' Annibale et al 2000;Tsioulpas et al 2002;Ayed et al 2005;Sampedro et al 2005). In recent years, the use of enzymes has gained a wider acceptance in bioremediation studies, because of the recognition that enzymes from various plant and microbial sources have several advantages over conventional physical and chemical treatment processes.…”

Section: Introductionmentioning

confidence: 99%

Removal of olive mill waste water phenolics using a crude peroxidase extract from onion by-products

et al. 2009

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Olive mill waste water (OMWW) originating from a two-phase olive oil-producing plant was treated with a crude peroxidase extract prepared from onion solid by-products. The treatments were based on a 3 9 3 factorial design, employing a series of combinations of pH and H 2 O 2 , in order to identify optimal operational conditions. The treatment performance was assessed by estimating the removal percentage of total polyphenols. The model established produced a satisfactory fitting of the data (R 2 = 0.94, p = 0.0158), while the second-order polynomial equation used to describe the process indicated that peroxidase-catalysed polyphenol removal in diluted OMWW is facilitated at relatively low pH and intermediate H 2 O 2 values. A predicted value of 50.7 ± 9.5% removal was calculated under optimal operational conditions (pH 2.76, [H 2 O 2 ] = 3.56 mM). Analysis of an untreated and an optimally treated sample by high performance liquid chromatography revealed that enzyme treatment brought about alteration in the original OMWW polyphenolic profile. The use of peroxidase from onion solid by-products is proposed as an alternative means that could have a prospect in bioremediation applications.

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Bioconversion of olive-mill dry residue by Fusarium lateritium and subsequent impact on its phytotoxicity

Cited by 38 publications

References 29 publications

Reduced dry olive residue phytotoxicity in the field by the combination of physical and biological treatments

Reduced dry olive residue phytotoxicity in the field by the combination of physical and biological treatments

Assessment of sediment toxicity during anaerobic biodegradation of vegetable oil using Microtox® and Hyalella azteca bioassays

Removal of olive mill waste water phenolics using a crude peroxidase extract from onion by-products

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