Short-term modifications of soil microbial community structure and soluble organic matter chemical composition following amendment with different solid olive mill waste and their derived composts

Federici, Ermanno; Massaccesi, Luisa; Pezzolla, Daniela; Fidati, Laura; Montalbani, Elena; Proietti, Primo; Nasini, Luigi; Regni, Luca; Scargetta, S.; Gigliotti, Giovanni

doi:10.1016/j.apsoil.2017.06.014

Cited by 30 publications

(26 citation statements)

References 67 publications

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“…In Portugal, this industry produces N600,000 t of wastes, whose discharge without treatment would have a negative impact in the environment. Due to the high content in phosphorous, potassium and organic matter, these wastes have been applied as amendment on the agricultural soils, not only because of its low cost but also for its potential to enhance soil fertility and reduce the risks of soil degradation (Federici et al, 2017;Regni et al, 2017). On the other hand, these wastes contain high amounts of organic substances (fibers, sugars, volatile fatty acids, polyalcohols, pectins and fats) and a variety of phenolic compounds such as hydroxytyrosol and tyrosol, secoiridoid derivatives, phenolic acids and flavonoids (Papaioannou et al, 2013), thus being also a promising source of valuable compounds.…”

Section: Introductionmentioning

confidence: 99%

The use of gamma radiation for extractability improvement of bioactive compounds in olive oil wastes

Madureira

Días

Pinela

et al. 2020

Science of The Total Environment

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Olive pomace is an environmentally detrimental waste from olive oil industry, containing large amounts of bioactive compounds that might be used by the food industry. In this work, the effects of gamma radiation on phenolic compounds and bioactive properties (antioxidant, antimicrobial activities and hepatotoxicity) of Crude Olive Pomace (COP) and Extracted Olive Pomace (EOP) extracts were evaluated. Hydroxytyrosol was the main phenolic compound identified in both olive pomace extracts (24-25 mg/g). The gamma radiation treatment of olive pomace improved at least 2-fold the extractability of phenolic compounds. Moreover, results suggested that gamma radiation at 5 kGy increased the antioxidant activity in EOP, while keeping the ability to protect erythrocytes against oxidation-induced haemolysis. Gamma radiation at 5 kGy could be a suitable technology for olive oil pomaces waste valorization, contributing to enhance extraction of phenolic compounds and bioactive properties, especially when applied on extracted material.

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Section: Introductionmentioning

confidence: 99%

The use of gamma radiation for extractability improvement of bioactive compounds in olive oil wastes

Madureira

Días

Pinela

et al. 2020

Science of The Total Environment

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“…Furthermore, the growing research area of soil microbiomics can be used to evaluate amendment-caused changes in microbial physiology and diversity and how these changes influence soil C dynamics [65] and ultimately orchard growth and productivity [22]. A clear example of how amendments change soil enzyme activities, soil microbiological community structure, chemical composition, and soil fertility has been described using olive mill waste [66][67][68][69]. There are opportunities for coordinated studies across multiple species or amendments that may identify common patterns in changes that can be used to improve soil carbon sequestration and the subsequent benefits from these improvements.…”

Section: Effects Of Organic Soil Amendments On Soil Nutrient Dynamicsmentioning

confidence: 99%

Recent Achievements and New Research Opportunities for Optimizing Macronutrient Availability, Acquisition, and Distribution for Perennial Fruit Crops

et al. 2020

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Tree responses to fertilizer management are complex and are influenced by the interactions between the environment, other organisms, and the combined genetics of composite trees. Increased consumer awareness of the environmental impact of agriculture has stimulated research toward increasing nutrient-use efficiency, improving environmental sustainability, and maximizing quality. Here, we highlight recent advancements and identify knowledge gaps in nutrient dynamics across the soil–rhizosphere–tree continuum for fruit crops. Beneficial soil management practices can enhance nutrient uptake and there has been significant progress in the understanding of how roots, microorganisms, and soil interact to enhance nutrient acquisition in the rhizosphere. Characterizing root architecture, in situ, still remains one of the greatest research challenges in perennial fruit research. However, the last decade has advanced the characterization of root nutrient uptake and transport in plants but studies in tree fruit crops have been limited. Calcium, and its balance relative to other macronutrients, has been a primary focus for mineral nutrient research because of its important contributions to the development of physiological disorders. However, annual elemental redistribution makes these interactions complex. The development of new approaches for measuring nutrient movement in soil and plant systems will be critical for achieving sustainable production of high-quality fruit in the future.

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“…Soil is the most diverse of all ecosystems; billions of bacterial cells (0.2-1.5μm), tens of thousands of protist cells (5-50μm) and kilometres of fungal hyphae typically inhabit a single gram of a typical soil (Geisen et al, 2019). Soil Microflora maintains ecosystem functions and productivity by their contribution to decomposition processes and humic substances synthesis, nutrients cycling and bioremediation of toxic metals or other hazardous wastes (Mekki et al, 2007;El Hassani et al, 2010;Federici et al, 2017;Zema et al, 2019). Multi-cellular soil animals (60 μm-17 mm) are conventionally separated into microfauna (e.g., nematodes), mesofauna (e.g., collembolans) and macrofauna (e.g., earthworms) (Korboulewsky et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…The study of the microbial impact of OMW application to soil was limited to determination of CO 2 production and microbial groups abundances (Chatzistathis and Koutsos, 2017;El Hassani et al, 2010;Magdich et al, 2012;Mekki et al, 2007;Saadi et al, 2007;Sierra et al, 2001;Federici et al, 2017). In these studies, no distinction between soil microflora and OMW microflora was settled.…”

Section: Introductionmentioning

confidence: 99%

The long term effect of Olive Mill Wastewater (OMW) on organic matter humification in a semi-arid soil

Hassani

Fadile

Faouzi

et al. 2020

Heliyon

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This study investigates the performance of soil and OMW microfloras in OMW organic matter humification in soil. In order to highlight the role of OMW and soil microfloras in the processes of OMW organic matter humification, either OMW or soil was sterilized with autoclaving. The study was carried out in microcosms of 1l containing 500 g of raw or sterilized soil, to which was added 200 ml of raw or sterilized OMW. After 24 months of incubation, the amount of phenolic compounds in the different microcosms was statistically indifferent compared to the control. However, TG-DTA and FTIR analysis of soil humic acids showed that recalcitrant OMW phenolic compounds remain in soil humus in the microcosm: sterilized OMW þ raw soil, even after 24 months. Results show that humic acids detected in presence of OMW microflora are loaded with proteins and carbonated compounds and deprived of phenolic compounds and aliphatics with long chain, while humic acids detected in absence of OMW microflora are loaded with phenolic compounds.

show abstract

Short-term modifications of soil microbial community structure and soluble organic matter chemical composition following amendment with different solid olive mill waste and their derived composts

Cited by 30 publications

References 67 publications

The use of gamma radiation for extractability improvement of bioactive compounds in olive oil wastes

The use of gamma radiation for extractability improvement of bioactive compounds in olive oil wastes

Recent Achievements and New Research Opportunities for Optimizing Macronutrient Availability, Acquisition, and Distribution for Perennial Fruit Crops

The long term effect of Olive Mill Wastewater (OMW) on organic matter humification in a semi-arid soil

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