Physico‐chemical and toxicological assessment of liquid wastes from olive processing‐related industries

Pierantozzi, Pierluigi; Zampini, Catiana; Torres, Mariela; Isla, Marı́a Inés; Verdenelli, Romina Aylén; Meriles, José Manuel; Maestri, Damián

doi:10.1002/jsfa.4562

Cited by 38 publications

(27 citation statements)

References 36 publications

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“…OMW is a liquid of violet to dark brown color with a strong smell of olive oil (40). This byproduct is composed of vegetable water from the fruit and the water used in different stages of oil extraction that contains olive pulp, mucilage, pectin, oil, and other suspended components in a relatively stable emulsion (41).…”

Section: Discussionmentioning

confidence: 99%

Novel Feed Including Olive Oil Mill Wastewater Bioactive Compounds Enhanced the Redox Status of Lambs

Makri

Kafantaris

Savva

et al. 2018

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Section: Discussionmentioning

confidence: 99%

Novel Feed Including Olive Oil Mill Wastewater Bioactive Compounds Enhanced the Redox Status of Lambs

Makri

Kafantaris

Savva

et al. 2018

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“…Additionally, seafood processing wastes do not contain known toxic or carcinogenic materials like liquid wastes from other industries [48]. Therefore, the shrimp extract is a low-cost and environmentally-friendly resource.…”

Section: Effects Of Liquid Organic Fertilizers On the Growth Of Chrysmentioning

confidence: 99%

Effects of Liquid Organic Fertilizers on Plant Growth and Rhizosphere Soil Characteristics of Chrysanthemum

Gao²,

Shi

et al. 2017

Sustainability

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Abstract:Organic fertilizers are generally thought to be an effective way to sustain soil fertility and plant growth. To promote the productivity of chrysanthemum, five sources of liquid organic fertilizers (L1-L5), as well as a chemical fertilizer, were applied at an early stage of the growth cycle to investigate their effects on plant growth. In the short-term pot experiment, the liquid organic fertilizers significantly promoted root and aboveground growth by 10.2-77.8% and 10.7-33.3%, respectively, compared with the chemical fertilizer. The order of growth promotion was: L1 (shrimp extracts) > L2 (plant decomposition) > L4 (seaweed extracts)/L5 (fish extracts) > L3 (vermicompost). Morphological and chemical analyses indicated that, compared with other organic fertilizers, the treatment with shrimp extract (L1) produced the greatest increases in root dry weight, total length, surface area, volume, tips, and thick root length, respectively. Furthermore, the shrimp extract treatment significantly increased the nutrient contents and altered the soil's functional microbial community at the rhizospheric level compared with the chemical fertilizer treatment. Thus, the shrimp extract liquid organic fertilizer could be part of an effective alternative to chemical fertilization during the early stage of chrysanthemum growth.

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“…The olive oil industry in Mediterranean countries produces large amounts of waste from the two‐phase centrifugation process (Sánchez‐Monedero et al ., ), with more than 4 million tons each year in Spain alone (Fernández‐Hernández et al ., ). This waste, known as ‘olive husk’, has an acid pH, typically lower than 5·5, reductive properties, and high contents in polyphenols (Pierantonzzi et al ., ); as a result, its disposal in agricultural land can have phytotoxic effects (Alburquerque et al ., ; Tortosa et al ., ). This risk, however, can be suppressed by composting (Ait Baddi et al ., ; Fornes et al ., ), which renders the waste useful as a soil amendment (Roig et al ., ; Tortosa et al ., ) or as a growing medium for potted plants (Caballero et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Olive Husk Compost Improves the Quality of Intensively Cultivated Agricultural Soils

Moreno

Carmona

Santiago³

et al. 2015

Land Degrad Dev

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Organic amendments improve the quality of degraded cultivated agricultural soils. In this work, we examined the impact of an olive husk compost (OHC) on quality‐related physical, chemical and biochemical properties of intensively managed greenhouse soil. To this end, a completely randomized block experiment involving a single factor and two treatments (viz., annual application of OHC at 30 Mg ha−1 or no application) with three replications was used for 5 years. The effect of the compost was studied at two soil depths (0–10 and 10–25 cm) and two positions relative to crop rows (viz., on rows and between rows). Application of OHC increased soil organic matter (SOM) content, which is consistent with the low degradation rate of the compost in soil and confirms its usefulness as a source of organic C for soil. Increased SOM content resulted in decreased bulk density, and also in increased porosity and available water in the soil. The amendment was also an effective source of nutrients, particularly N, P, K and Ca, the last of which contributed to decrease exchangeable Na levels in the soil surface layer. The compost increased the activity of all enzymes studied except urease. This result can be ascribed to increased microbial activity, the presence of enzymes in the compost and their stabilization by organic matter and clay in the soil. Dehydrogenase and phosphatase were the individual enzyme activities in the soil, which were correlated with the largest number of soil properties favourably affected by OHC. Copyright © 2015 John Wiley & Sons, Ltd.

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Physico‐chemical and toxicological assessment of liquid wastes from olive processing‐related industries

Abstract: This work adds new data for environmental risk assessment of olive industrial wastes. Direct use of olive wastes for agricultural purposes should be limited owing to their possible chemotoxic, phytotoxic and antimicrobial effects.

Cited by 38 publications

References 36 publications

Novel Feed Including Olive Oil Mill Wastewater Bioactive Compounds Enhanced the Redox Status of Lambs

Novel Feed Including Olive Oil Mill Wastewater Bioactive Compounds Enhanced the Redox Status of Lambs

Effects of Liquid Organic Fertilizers on Plant Growth and Rhizosphere Soil Characteristics of Chrysanthemum

Olive Husk Compost Improves the Quality of Intensively Cultivated Agricultural Soils

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