Characterization of threeNigella SativaL. Crude Oil Species, Measures of their Antioxidant Activity by DPPH

Mraihi, Farouk; Journi, Mohamed; Chérif, Jamila Kalthoum; Trabelsi‐Ayadi, Malika

doi:10.1080/22297928.2013.797630

Cited by 5 publications

(7 citation statements)

References 21 publications

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“…The occurrence of tannins is most expected to be accountable for the antioxidant and anti-inflammatory belongings recorded for this plant and the alkaloids are accountable for additional therapeutic assets. Similar findings were also reported earlier by Naz, 2011, Mraihi et al, 2013;Ahmad et al, 2013 andPiras et al, 2013. In Table 1, phytochemical tests result is shown related to the presence and absence of phytoconstituents in seed extracts.…”

Section: Results and Discussion: Phytochemical Analysissupporting

confidence: 90%

“…The antimicrobial activity was measured after 18-24 h of incubation at 37 °C. The zone of inhibition produced by the plant extracts discs were measured and compared with the standard antibiotics (Chloramphenicol and Gentamycin) in millimeter (mm) 12,26,28,29 . The reaction mixture was kept for 24 h at standard chamber temperature.…”

Section: Test For Steroidsmentioning

confidence: 99%

“…A blank sample was prepared by adding ethanol and DPPH. The evaluation of radical scavenging activities of the tested samples, articulated as a percentage of inhibition was calculated asPercent inhibition of DPPH activity = [(A B -A A ) / A B ] × 100Where, A A = absorbance values of the test sample & A B = absorbance values of the blank sample26,27,29 .A percentage inhibition versus volume curve was plotted to check the efficiency of plant extracts. Infig 6,antioxidant activity is shown for different concentration of extracts vs. DPPH.…”

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confidence: 99%

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2019

IJPSR

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Nigella sativa is considered a miracle herb plant belongs to the Ranunculaceae family, inhabitant to South Asia and Southwest Asia. The most important part of the Nigella sativa plant used by human beings are seeds, mostly as a spice because it contains a specific aroma. The seeds derived from Nigella sativa being exploited by people and used for thousands of years for culinary purposes, to cure various digestive disorders, recover from joint pains, obesity, common cold, headache, asthma, rheumatic diseases, etc. in India, Pakistan, Bangladesh, China, and Middle East countries. In the current study, the seed extracts of Nigella sativa were targeted for evaluation of qualitative biochemical analysis of phytochemicals, antibacterial, cytotoxicity, and antioxidant properties. Nanoparticles formulations derived as of the aqueous extract of seeds of Nigella sativa were developed and tested against selected microorganisms. FTIR and HPLC also performed to evaluate the functional group analysis and to detect the presence of a bioactive compound in the phytochemical extract. Cytotoxicity properties of methanolic and ethanolic seed extracts of Nigella sativa have been evaluated against three cell lines; A549, SW480, and HeLa. In the current findings, bioactive constituents present in extracts were alkaloids, flavonoids, saponins, tannins, and phenolic compounds which are responsible for antioxidant activities, antibacterial, and cytotoxic effects. N. sativa seeds contain high valuable bioactive molecules which can perform a very significant role in curing various diseases and in development of the green drug and can be explored for immunomodulatory effects. INTRODUCTION: Nigella sativa is mostly named as black seed or black cumin or kalonji seeds, and in Middle East countries, it is traditionally called as "Haba al-barakah" meaning seeds of blessings, belongs to the plant family Ranunculaceae.

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Section: Results and Discussion: Phytochemical Analysissupporting

confidence: 90%

Section: Test For Steroidsmentioning

confidence: 99%

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2019

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“…This activity was supported by ESR study in which cold-pressed NSOs contained natural antioxidants of phenolics compounds ranging 1.02-1.40 mg GAE/g oil and also contained thymoquinone of 3.48-8.73 mg/g (Parry et al, 2005). Mraihi et al (2013) have compared antioxidant activity of NSO using DPPH radical scavenging method from Tunisia (NSO-T), Libya (NSO-L) and Saudi Arabia (NSO-S) extracted using Soxhlet with hexane as solvent. NSO-S revealed the higher antioxidant activity than NST and NSL with IC 50 of 0.422, 0.507 and 0.528 μg/μL, respectively.…”

Section: Antioxidant Activities Of Nigella Sativa Oilmentioning

confidence: 84%

Nigella sativa oil: physico-chemical properties, authentication analysis and its antioxidant activity

Rohman¹,

Lukitaningsih²,

Rafi³

et al. 2019

Food Res.

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Nigella sativa oil (NSO) is one of the high value oils in fats and oils industry due to its nutritional applications and its beneficial effects on human health. Several biological activities have been reported, especially antioxidant activities due to its active components, especially phenolics compounds. Some methods have been used for extraction of NSO from seeds to obtain high yield with excellent quality which includes solvent extraction, cold press, Soxhlet, and microwave assisted extraction. NSO commands a high price in the market, as a consequence, NSO is a target to be adulterated with cheaper oils such as corn and soybean oils. Indeed, the authentication analysis of NSO by determining several physico-chemical properties to determine the characteristics of NSO must be performed. This review highlighted some physico-chemical properties of NSO along with authentication of NSO from adulterants. The antioxidant activities of NSO were also highlighted in this review. Based on its activity as antioxidant, NSO is a good source to be used in nutraceutical and pharmaceutical products.

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“…Chlorophyll, a prooxidant, is involved in autoxidation, and photooxidation mechanisms reduce the shelf-life of oils as it contains pheophytin and pheophorbide as derivatives are therefore undesirable. The level of chlorophyll in the oil of P. macrophylla can be reduced to an acceptable level by bleaching it with activated charcoal (Ghazani & Marangoni, 2013;Mraihi et al, 2013). The refractive index (RI) is a physical property that can be related to the structure that includes double bonds in fatty acids, and it increases as a result of an increase in conjugation, the formation of hydroperoxide and polymerization (Arya et al, 1969;Ospina et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

Gas Chromatographic Analysis of Bioactive Compounds in the Seed Oil of Pentaclethra macrophylla (African Oil Bean Tree)

Oyedeji¹,

Azeez²,

Odeyemi³

2021

NRFHH

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This study characterized the bioactive components in the seed oil of Pentaclethra macrophylla to establish its usefulness in replacing costly convectional oils in industrial applications. Identification and quantification of the bioactive attributes were performed using gas-liquid chromatography with flame ionization detector (GC-FID) after extraction with n-Hexane. The main bioactive contents per 100 g in the oil were sitosterol (457.58 mg), campesterol (34.54 mg) and stigma-sterol (18.52 mg) been the most abundant sterols. The oil contained per 100 g β-carotene (15.89 mg), xanthophyll (10.32 mg), lutein (9.22 mg), and neo-xanthin (5.46 mg) as the highest carotenoids. The oil has ɣ- tocopherol (43.83 mg) and α-tocopherol (3.35 mg) also per 100 g. The main terpenes per 100 g in the oil were γ-elemene (17.28 mg), α-caryophyllene (13.06 mg), β-elemene (12.43 mg) and D-limonene (6.11 mg). Terpenoids including β-amyrin, α-amyrin and lupeol were found in trace amounts.

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Characterization of threeNigella SativaL. Crude Oil Species, Measures of their Antioxidant Activity by DPPH

Cited by 5 publications

References 21 publications

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Nigella sativa oil: physico-chemical properties, authentication analysis and its antioxidant activity

Gas Chromatographic Analysis of Bioactive Compounds in the Seed Oil of <i>Pentaclethra macrophylla</i> (African Oil Bean Tree)

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