scholarly journals De-Colourisation of Textile Dye Effluents using cost-effective Nigella Sativa Seed Waste

2020 ◽  
Vol 06 (9S) ◽  
pp. 78-82
Author(s):  
Raja Balasaraswathi S and Kiruba T
Keyword(s):  
Removal Efficiency ◽  
Dye Removal ◽  
Nigella Sativa ◽  
Effluent Treatment ◽  
Textile Dye ◽  
Active Components ◽  
Experimental Conditions ◽  
Black Cumin ◽  
The Impact ◽  
Nigella Sativa Seed

The textile industry is one of the major industries contributing to water pollution. The wet processing of textiles involves the usage of a wide variety of chemicals and dyes. This water-intensive process can potentially affect the water bodies by its effluents. The treatment of dye effluents and reusing of the water could be the possible solution to reduce the impact. Adsorption is one of the most common methods used for textile effluent treatment. Various bio-adsorbents are explored to make the adsorption more sustainable. Nigella Sativa (Black cumin) seeds and its oil are having good medicinal value. The seed-waste left after the oil extraction is found to have active components that can be used as an effective bio-adsorbent. The dye removal efficiency of Nigella Sativa seed-waste is investigated under different experimental conditions (varied adsorbent dose, temperature, pH, and contact time) for reactive dyes. The maximum removal efficiency of 91% is obtained at the optimized experimental condition. Thus the study emphasizes that the no-cost Nigella Sativa seed-waste can be used as an effective bio-adsorbent for reactive dye removal from dye effluents.

scholarly journals Black Cumin (Nigella sativa L.): A Comprehensive Review on Phytochemistry, Health Benefits, Molecular Pharmacology, and Safety

Nutrients ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 1784
Author(s):  
Md. Abdul Hannan ◽  
Md. Ataur Rahman ◽  
Abdullah Al Mamun Sohag ◽  
Md. Jamal Uddin ◽  
Raju Dash ◽  
...  
Keyword(s):  
Nigella Sativa ◽  
Health Benefits ◽  
Underlying Mechanism ◽  
Future Research ◽  
Molecular Pharmacology ◽  
Active Components ◽  
Drug Induced ◽  
Current Effort ◽  
Black Cumin ◽  
Pharmaceutical Industries

Mounting evidence support the potential benefits of functional foods or nutraceuticals for human health and diseases. Black cumin (Nigella sativa L.), a highly valued nutraceutical herb with a wide array of health benefits, has attracted growing interest from health-conscious individuals, the scientific community, and pharmaceutical industries. The pleiotropic pharmacological effects of black cumin, and its main bioactive component thymoquinone (TQ), have been manifested by their ability to attenuate oxidative stress and inflammation, and to promote immunity, cell survival, and energy metabolism, which underlie diverse health benefits, including protection against metabolic, cardiovascular, digestive, hepatic, renal, respiratory, reproductive, and neurological disorders, cancer, and so on. Furthermore, black cumin acts as an antidote, mitigating various toxicities and drug-induced side effects. Despite significant advances in pharmacological benefits, this miracle herb and its active components are still far from their clinical application. This review begins with highlighting the research trends in black cumin and revisiting phytochemical profiles. Subsequently, pharmacological attributes and health benefits of black cumin and TQ are critically reviewed. We overview molecular pharmacology to gain insight into the underlying mechanism of health benefits. Issues related to pharmacokinetic herb–drug interactions, drug delivery, and safety are also addressed. Identifying knowledge gaps, our current effort will direct future research to advance potential applications of black cumin and TQ in health and diseases.

scholarly journals Determination of Oxygen Radical Absorbance Capacity of Black Cumin (Nigella sativa) Seed Quinone Compounds

2011 ◽  
Vol 6 (2) ◽  
pp. 1934578X1100600 ◽  
Author(s):  
Hana Tesarova ◽  
Blanka Svobodova ◽  
Ladislav Kokoska ◽  
Petr Marsik ◽  
Marie Pribylova ◽  
...  
Keyword(s):  
Nigella Sativa ◽  
Oxygen Radical ◽  
Scavenging Activity ◽  
Black Cumin ◽  
Future Potential ◽  
Dpph Scavenging ◽  
Nigella Sativa Seed ◽  
Antioxidative Action ◽  
Potential Use

In this study, the antioxidant capacities of main quinone constituents of Nigella sativa seeds, namely dithymoquinone (1), thymohydroquinone (2) and thymoquinone (3), were compared using DPPH and ORAC methods. The best scavenging activity was produced by 2, which showed a remarkable activity of 2.60 Trolox equivalents (TE) in a concentration range between 1.6 and 6.4 μg/mL and IC50 value of 2.4 μg/mL in ORAC and DPPH assays, respectively. Contrastingly, 3 possessed only weak DPPH scavenging efficacy (IC50 = 170 μg/mL) but significant antioxidative action of 1.91 TE in ORAC assay. No effect has been observed for 1. Additionally, modified protocol for synthesis of 2 has been developed with aim to enhance its availability for further studies as well as for its future potential use. Based on the results of this study, we conclude that 2 could be considered as a compound with prospective antioxidative properties.

scholarly journals Effect of operating parameters on dye wastewater treatment using Prosopis cineraria and kinetic modeling

2019 ◽  
Vol 25 (5) ◽  
pp. 788-793 ◽  
Author(s):  
Rajamohan Natarajan ◽  
Rajasimman Manivasagan
Keyword(s):  
Removal Efficiency ◽  
Effluent Treatment ◽  
Potassium Oxide ◽  
Textile Dye ◽  
Dye Wastewater ◽  
Order Model ◽  
Prosopis Cineraria ◽  
Operating Variables ◽  
Textile Dye Effluent ◽  
Pseudo Second Order

Textile dye effluent treatment was investigated using a novel biosorbent synthesized from Prosopis cineraria. The influence of operating variables, namely initial COD of the effluent (352-1,303 mg/L) and adsorbent dosage (0.25-4.0 g/L) on the removal efficiency was studied. The results of the biosorption experiments indicated that the equilibrium COD removal efficiency attained was 68% and COD uptake achieved was 90.52 mg/g at an optimal sorbent dose (2.0 g/L). Pseudo second order model fitted well to the experimental data and the rate constant was estimated as 0.098 x 10<sup>-5</sup> g /(mg min) .Chemisorption was identified as the removal mechanism involved. Power function model represented the kinetic data in selected range of COD and kinetic constants were estimated. XRF analysis of the biosorbent confirmed the presence of potassium oxide and calcium oxide as the two major components.

scholarly journals Study of C.I. Acid Orange 7 removal in contaminated water by photo oxidation processes

2013 ◽  
Vol 10 (1) ◽  
pp. 16-23 ◽  
Keyword(s):  
Removal Efficiency ◽  
Uv Irradiation ◽  
Rate Constant ◽  
Dye Removal ◽  
Irradiation Time ◽  
Inhibitory Effect ◽  
Textile Dye ◽  
Acid Orange 7 ◽  
Acid Orange ◽  
First Order

C.I. Acid Orange 7 (AO7) commonly used as a textile dye and could be degraded by UV/ZnO, UV/H2O2 and UV/H2O2/Fe (III) (photofenton) processes. In the photocatalytic degradation of dye by UV/ZnO process, effect of some parameters such as UV irradiation time, presence of ZnO and UV irradiation, pH, concentrations of ZnO, dye, H2O2 and ethanol was examined and first order reaction rate constant was calculated equal to 2.39×10-2 min-1 at experimental condition. The semi-log plot of dye concentration versus time was linear, suggesting first order reaction. Efficiency of photodegradation process in the absence of ZnO photocatalyst and UV light was small. Increasing the UV irradiation time increased AO7 removal. Ethanol had inhibitory effect on this process. Maximum AO7 removal was seen at neutral pH area. In the UV/H2O2 process, effect of some parameters such as presence of H2O2 and UV irradiation, amount of H2O2, effect of pH and addition of bicarbonate on the efficiency of dye removal were examined. Absence of each of UV irradiation or H2O2 decreased AO7 removal efficiency near to zero. Increasing H2O2 concentration increased dye removal to some extent but at higher H2O2 concentrations, dye removal efficiency did not increase. Increasing pH to value about 9 increased the AO7 removal efficiency and increasing bicarbonate anion concentration decreased it. Rate constant of AO7 removal by this process was calculated to be equal to 4.221×10-1 min-1 at experimental condition. Also, the order of UV/ H2O2/Fe (III) > UV/ H2O2 > UV/Fe (III) > H2O2/Fe (III), was seen for AO7 removal efficiency of these processes. Increasing Fe (III) and oxalate concentration increased dye removal efficiency.

Exogenous application of black cumin (Nigella sativa) seed extract improves maize growth under chromium (Cr) stress

2021 ◽  
pp. 1-13
Author(s):  
Hafiza Mamona Allah Ditta ◽  
Abida Aziz ◽  
Madiha Khadim Hussain ◽  
Noman Mehboob ◽  
Mubshar Hussain ◽  
...  
Keyword(s):  
Nigella Sativa ◽  
Seed Extract ◽  
Black Cumin ◽  
Exogenous Application ◽  
Maize Growth ◽  
Nigella Sativa Seed

scholarly journals First Report in Sudan: Detection of Antibacterial Activity of the Black Cumin (Nigella sativa) Seed Extract against Mycoplasma mycoides subsp mycoides (Mmm)

2019 ◽  
pp. 1-6
Author(s):  
Raghad A. H. Onsa ◽  
E. A. Muna ◽  
Samia A. A. Hassan
Keyword(s):  
Seed Oil ◽  
Nigella Sativa ◽  
Local Strain ◽  
Bactericidal Effect ◽  
Black Cumin ◽  
Veterinary Research ◽  
Mycoplasma Mycoides ◽  
Inhibition Zones ◽  
Nigella Sativa Seed

Aims: This study was focused on the effect of Nigella sativa seed oil on the in vitro growth of Mycoplasma mycoides subsp mycoides (Mmm). Study Design: Three strains of (Mmm) were subjected to different dilutions of extracted Nigella sativa seed oil and the inhibitory zones were recorded. Type of effect (bactericidal or bacteriostatic) was studied. Place and Duration of Study: The study was carried out at Mycoplasma and biochemistry departments Central Veterinary Research Laboratory (CVRL) - 2018. Methodology: The tested strains were: Reference strain (T1/44), recent local strain (RH strain) and the last one was an old local strain (F strain). Different dilutions were used from N. sativa (25%, 50%, 75% and 100%) respectively. Results: The N. sativa revealed different inhibition zones on the growth of the three mentioned cultures. In addition to that bactericidal effect on (Mmm) growth was observed. Conclusion: The result of this study suggests the potential use of Cumin seed (N. sativa) against (Mmm) in vitro, and this result contributes in CBPP disease control using this type of natural seeds.

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