Efficacy of rosemary (Rosmarinus officinalis L.) powder and extracts in the protection of refined and stripped hazelnut oil

Tohma, Serdar; Günal-Köroğlu, Deniz; Turan, Semra; Ramadan, Mohamed Fawzy

doi:10.1007/s12210-021-01002-3

Cited by 8 publications

(3 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The beta-carotene bleaching test was established using the method of Tohma et al [37] with minor modifications. The process is founded on the oxidative breakdown of betacarotene in the presence of linoleic acid.…”

Section: Beta-carotene/linoleate Model Systemmentioning

confidence: 99%

The effect of ethanol/water concentration on phenolic composition, antioxidant, and antimicrobial activities of Rosmarinus tournefortii de Noé hydrodistillation solid residues

et al. 2022

View full text Add to dashboard Cite

Rosemary is one of the well-known aromatic and therapeutic plants recognized for the interesting pharmacological properties of its essential oil. After hydrodistillation, a huge amount of solid residue-remains, which still contains non-volatile bioactive compounds. Our work aims to study in depth the effect of ethanol/water concentration on the extraction yield, total phenolic and flavonoid content, chemical profile, antioxidant and antimicrobial activities of Rosmarinus tournefortii de Noé solid residues. Phenolic and flavonoid content was estimated spectrophotometrically and for their identification, High-performance liquid chromatography-photodiode array detector (HPLC-DAD) analysis was adopted. The antioxidant activity was established using common methods such as DPPH, ABTS, and the Beta-carotene/linoleate model system. Furthermore, the antimicrobial capacity was investigated against Escherichia coli ATCC 25,922 and Listeria innocua ATCC 33,090, two well-known organisms representing gram-negative and gram-positive bacteria, respectively, as well as against the mold Geotrichum.s p and the yeast Rhodotorula glutinis. Based on the statistical analysis, a significant effect of ethanol/ water concentration on the phenolic composition, antioxidant, and antifungal activity was revealed, while a slight difference was observed for the antibacterial activity. On the other hand, HPLC-DAD analysis endorsed the preferential extraction of gallocatechin and caffeic acid in 20% ethanol, homoplantaginin in 40%, cirsimaritin in 0% ethanol, and rosmarinic acid in 100% ethanol. Additionally, the 80% ethanol/water concentration indicated the highest extraction yield and flavonoid content (yield = 51.6%, TFC = 21.38 ± 0.23 mg QUE/g DW). On the contrary, 40% ethanol revealed both the highest phenolic content (TPC = 128.18 ± 0.56 mg GAE/g DW) and radical scavenging activities (IC50 = 0.051 ± 0.008 mg/mL, 0.061 ± 0.002 mg/ mL, and 1.232 ± 0.013 mg/mL for DPPH, ABTS, and beta-carotene/linoleate model system, respectively). Besides, 20% was the highest concentration for the inhibition of the two bacteria Escherichia coli (7.35 ± 0.05%) and Listeria innocua (8 ± 0.1%) as well as the mold Geotrichum sp, (16.5 ± 0.3%) and for the yeast Rhodotorula (26 ± 1.2%), 50% ethanol was found to be the most appropriate concentration. These differences detected between the studied activities of rosemary solid residue extracts were strongly influenced by the target phenolic compounds extracted.

show abstract

Section: Beta-carotene/linoleate Model Systemmentioning

confidence: 99%

The effect of ethanol/water concentration on phenolic composition, antioxidant, and antimicrobial activities of Rosmarinus tournefortii de Noé hydrodistillation solid residues

et al. 2022

View full text Add to dashboard Cite

show abstract

“…It contains a range of bioactive compounds, including phenolic diterpenes (carnosic acid, carnosol, and epi-and iso-rosemanaol), flavonoids, and rosmarinic acid, which demonstrate robust capabilities in scavenging free radicals and chelating metals. , These antioxidant compounds have shown promising roles in inhibiting the oxidation of lipids and preserving the quality of various food products. Literature has demonstrated the potential of RE in inhibiting the oxidation process in various oil, such as hazelnut oil, olive oil, and sunflower oil. − These antioxidant compounds have displayed encouraging results in preventing lipid oxidation and maintaining the quality of various fats and oil.…”

Section: Introductionmentioning

confidence: 99%

Shelf Life Enhancement of Structured Lipids Rich in Omega-3 Fatty Acids Using Rosemary Extract: A Sustainable Approach

Kumari Singh,

Chopra,

Garg

et al. 2024

ACS Omega

View full text Add to dashboard Cite

This study investigates the efficacy of rosemary extract (RE) in stabilizing structured lipids (SL) developed using perilla seed oil (PSO) and palmolein (PO) under accelerated storage conditions. The oil samples, comprising PSO, Blend, and SL formulations with and without RE (1500 ppm) and BHT (200 ppm), were studied for their storage stability during a 30 day storage period at 65 °C, with the analysis carried out at 6 day intervals. Oxidative properties were comprehensively assessed, including both physical attributes (color, viscosity, and refractive index) and chemical parameters (peroxide value, free fatty acid (FFA), p-anisidine value, TOTOX value, conjugated dienes, and trienes). The results demonstrated that RE-enriched oil samples exhibited significantly higher oxidative stability (p < 0.05) compared to the control group. SL added with 1500 ppm of RE exhibited notable enhancements in quality parameters, showcasing reductions in FFA, TOTOX value, conjugated diene, and triene value by 44. 01%, 35.42, 39.03, and 47.36, respectively, when compared to SL without any antioxidant. The RE at 1500 ppm concentration showed a similar effect as the synthetic antioxidant BHT at 200 ppm. Also, the RE demonstrated potent inhibition of the oxidation of polyunsaturated fatty acids, thereby contributing to the improved oxidative stability of the SLs. Furthermore, SL with RE also exhibited reduced degradation of the tocopherol content and total phenolic content during the storage period. Principal component analysis demonstrated that SL and blend followed similar oxidative characteristics as they fell within the same quadrant. These findings underscore RE as a potent source of antioxidants capable of scavenging free radicals and enhancing the oxidative stability of omega-3 fatty acid-rich SLs.

show abstract

“…Green chemistry is defined as the usage of chemistry for preventing environmental pollution to maintain human health. Green chemistry is the design of new processes and products or the modification of existing processes and compounds to reduce or eliminate the production and application of hazardous substances, which would result in causing less harm and reducing the threat to human health and environment [19,20]. The utilisation of semiconductor photocatalysts for the treatment of the environment attracted the attention of many due to their applicability in the removal of a wide range of pollutants, in both gaseous and liquid phases [21].…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of tungsten oxide (WO ₃ ) nanosheets and investigation of their photocatalytic and cytotoxicity effects

Ghazal

Mirzaee

Darroudi

2022

Micro & Nano Letters

View full text Add to dashboard Cite

In the present work, the synthesis of tungsten oxide nanosheets (WO 3 -NS) was performed through a sol-gel method with the usage of Na 2 WO 4 as the tungsten source in a gelatin solution that functioned as a novel green stabilising agent. The synthesised WO 3 -NS were characterised by the analysing methods of XRD, FESEM/EDX, FTIR, TGA/DTG, UVvis, Raman, and VSM. The photocatalytic activity of the product is investigated through the exertion of methylene blue pigment, while the obtained results reported 95% of degradation in 187 min under the light of a mercury vapour lamp. The cytotoxicity effect of WO 3 -NS on the human liver (Huh-7) cell line was evaluated by the means of the MTT method, which displayed the inhibiting capabilities of these nanosheets regarding cancer cells.

show abstract

Efficacy of rosemary (Rosmarinus officinalis L.) powder and extracts in the protection of refined and stripped hazelnut oil

Cited by 8 publications

References 55 publications

The effect of ethanol/water concentration on phenolic composition, antioxidant, and antimicrobial activities of Rosmarinus tournefortii de Noé hydrodistillation solid residues

The effect of ethanol/water concentration on phenolic composition, antioxidant, and antimicrobial activities of Rosmarinus tournefortii de Noé hydrodistillation solid residues

Shelf Life Enhancement of Structured Lipids Rich in Omega-3 Fatty Acids Using Rosemary Extract: A Sustainable Approach

Green synthesis of tungsten oxide (WO ₃ ) nanosheets and investigation of their photocatalytic and cytotoxicity effects

Contact Info

Product

Resources

About

Efficacy of rosemary (Rosmarinus officinalis L.) powder and extracts in the protection of refined and stripped hazelnut oil

Cited by 8 publications

References 55 publications

The effect of ethanol/water concentration on phenolic composition, antioxidant, and antimicrobial activities of Rosmarinus tournefortii de Noé hydrodistillation solid residues

The effect of ethanol/water concentration on phenolic composition, antioxidant, and antimicrobial activities of Rosmarinus tournefortii de Noé hydrodistillation solid residues

Shelf Life Enhancement of Structured Lipids Rich in Omega-3 Fatty Acids Using Rosemary Extract: A Sustainable Approach

Green synthesis of tungsten oxide (WO 3 ) nanosheets and investigation of their photocatalytic and cytotoxicity effects

Contact Info

Product

Resources

About

Green synthesis of tungsten oxide (WO ₃ ) nanosheets and investigation of their photocatalytic and cytotoxicity effects