A phytotoxic impact of phenolic compounds in olive oil mill wastewater on fenugreek “Trigonella foenum-graecum”

Bouknana, Driss; Jodeh, Shehdeh; Sbaa, Mohamed; Hammouti, B.; Arabi, Mourad; Darmous, Ahmed; Slamini, Maryam; Haboubi, Khadija

doi:10.1007/s10661-019-7541-x

Cited by 36 publications

(31 citation statements)

References 61 publications

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“…In addition, cress showed higher sensitivity to both compounds compared with Italian ryegrass, and the degree of sensitivity varied by concentration. Several previous studies have also documented such concentration-and testspecies-dependent phytotoxicity of allelochemicals [44][45][46]. The different sensitivities of test species to an allelopathic substance mainly depend on the physiological and biochemical attributes of each test plant.…”

Section: Discussionmentioning

confidence: 98%

Phytotoxic Activity and Identification of Phytotoxic Substances from Schumannianthus dichotomus

Rob

Hossen

Iwasaki

et al. 2020

Plants

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The phytotoxic potential of plants and their constituents against other plants is being increasingly investigated as a possible alternative to synthetic herbicides to control weeds in crop fields. In this study, we explored the phytotoxicity and phytotoxic substances of Schumannianthus dichotomus, a perennial wetland shrub native to Bangladesh, India, and Myanmar. Leaf extracts of S. dichotomus exerted strong phytotoxicity against two dicot species, alfalfa and cress, and two monocot species, barnyard grass and Italian ryegrass. A bioassay-driven purification process yielded two phenolic derivatives, syringic acid and methyl syringate. Both constituents significantly inhibited the growth of cress and Italian ryegrass in a concentration-dependent manner. The concentrations required for 50% growth inhibition (I50 value) of the shoot and root growth of cress were 75.8 and 61.3 μM, respectively, for syringic acid, compared with 43.2 and 31.5 μM, respectively, for methyl syringate. Similarly, to suppress the shoot and root growth of Italian rye grass, a greater amount of syringic acid (I50 = 213.7 and 175.9 μM) was needed than methyl syringate (I50 = 140.4 to 130.8 μM). Methyl syringate showed higher phytotoxic potential than syringic acid, and cress showed higher sensitivity to both substances. This study is the first to report on the phytotoxic potential of S. dichotomus and to identify phytotoxic substances from this plant material.

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Section: Discussionmentioning

confidence: 98%

Phytotoxic Activity and Identification of Phytotoxic Substances from Schumannianthus dichotomus

Rob

Hossen

Iwasaki

et al. 2020

Plants

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“…Therefore, treatment or dilution of olive mill wastewater is essential before use in crop irrigation (Rusan et al, 2015). The toxicity of olive oil mill wastewater is mainly caused by the presence of phenolic compounds, which depends particularly on the nature and the position of the substituents on the aromatic ring (Bouknana et al, 2019; Hanafi et al, 2010). The phytotoxicity test applied shows the impact of OMW on grain germination (Figure 6).…”

Section: Resultsmentioning

confidence: 99%

Effectiveness assessment of olive mill wastewater treatment by combined process: Natural flotation and anaerobic‐aerobic biodegradation

Rifi

Aguelmous

Fels

et al. 2021

Water & Environment J

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The present work intends to study the treatment of olive oil mill wastewater (OMW) by natural flotation followed by anaerobic‐aerobic biodegradation, without dilution. After natural flotation, turbidity, chemical oxygen demand (COD) and polyphenol decreased by 37.7%, 3.7% and 3.3%, respectively. Whereas, anaerobic treatment removed 23.9% of nitrate, 29.1% of turbidity and 16.2% of polyphenol. However, intermittent aeration treatment showed the reduction of nitrate, turbidity and ammonium by 90%, 26.5% and 65.1%, respectively. In general, the combined natural flotation and anaerobic‐aerobic treatment of OMW, without dilution, have led to reduced turbidity, COD, polyphenol, nitrate, ammonium and phosphorus by 67.5%, 29.1%, 25.2%, 93.9%, 77.1% and 81.8%, respectively. The germination index of the treated OMW was 69% after 30% of dilution. Finally, the proposed treatment process could be used in small and medium‐sized industries as a simple, economical and effective method. Also, the produced water could be reused for irrigation.

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“…Olive mill waste such as olive pomace (a mixture of minerals, fatty acids, sugars, and phenolic compounds) contains high quantities of organic acids (e.g., phenolic acids) that have been intensively studied because of their phytotoxic potential [1][2][3]. However, they are also a source of valuable nutritional resources [1,4].…”

Section: Introductionmentioning

confidence: 99%

From Green Technology to Functional Olive Oils: Assessing the Best Combination of Olive Tree-Related Extracts with Complementary Bioactivities

et al. 2021

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Our aim was to assess the combination of olive tree-related extracts with the most favorable profile of in vitro bioactive properties. We tested the antioxidant (increment of low-density lipoprotein resistance against oxidation), vasoactive (promotion of nitric oxide release and decrease of endothelin-1 production in human umbilical vein endothelial cells), anti-inflammatory (decrease of the endothelial production of vascular cell adhesion molecule-1), and antithrombotic (reduction of the endothelial release of plasminogen activator inhibitor-1) capacities of six phenolic extracts and three triterpenic acid solutions (Ps and Ts, respectively). We tested extracts alone and in combination, at nutritional (Ps: 0.05–0.5 μmol/L; Ts: 0.001–0.1 μmol/L) and nutraceutical doses (Ps: 1–10 μmol/L; Ts: 0.25–10 μmol/L). The combination of Ps rich in 3,4-dihydroxyphenylglycol (76%, P2), hydroxytyrosol (95%, P3), and oleuropein (70%, P4) (final nutritional concentration: 0.15 μmol/L; final nutraceutical concentration: 3 μmol/L) was the best in order to prepare functional products and nutraceuticals with cardioprotective properties, despite the fact that the isolated extract with the greatest in vitro properties was P5 (75% oleocanthal), suggesting a potential synergistic effect among different olive components.

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A phytotoxic impact of phenolic compounds in olive oil mill wastewater on fenugreek “Trigonella foenum-graecum”

Cited by 36 publications

References 61 publications

Phytotoxic Activity and Identification of Phytotoxic Substances from Schumannianthus dichotomus

Phytotoxic Activity and Identification of Phytotoxic Substances from Schumannianthus dichotomus

Effectiveness assessment of olive mill wastewater treatment by combined process: Natural flotation and anaerobic‐aerobic biodegradation

From Green Technology to Functional Olive Oils: Assessing the Best Combination of Olive Tree-Related Extracts with Complementary Bioactivities

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