Antioxidant activities from different rosemary clonal lines

Ban, Lan; Narasimhamoorthy, B.; Zhao, Liuqing; Greaves, John; Schroeder, William D.

doi:10.1016/j.foodchem.2016.01.082

Cited by 14 publications

(9 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Interestingly, a higher amount of RE (in OSGT + High RE + MT and High RE + MT) produced no further reduction in TPC from the TPC values in OSGT + Low RE + MT and Low RE + MT, indicating that at this dosage range, a higher amount of rosemary extract would not result in better performance in those ingredient combinations. Previous research has suggested that under some conditions, higher levels of rosemary extract produce pro-oxidant effects [19]. In addition, the presence of OSGT in a combination was noted to reduce TPC values numerically.…”

Section: Results Of the Initial Palm Oil Screening Studymentioning

confidence: 87%

Identification of Ingredients for Stabilizing Frying Oil Through a New Screening Method

Ban¹,

Patel²,

Schroeder³

2016

J Americ Oil Chem Soc

Self Cite

View full text Add to dashboard Cite

Abbreviations TBHQ Tert-butylhydroquinone CA Citric acid RE Rosemary extract OSGT Oil soluble green tea extract OSI Oxidative stability instrument MT Mixed tocopherols AA L-Ascorbic acid TPC Total polar compounds AP Ascorbyl palmitate PA Phytic acidAbstract Frying oils are prone to quality deterioration; because of the high surface area, lipid molecules can interact with air, moisture, and oxidative reagents that promote various reactions. However, the search for effective ingredients for stabilizing frying oil has been slow, given the complexity of the frying processes and lack of effective tools to accurately predict the performance of emerging ingredients. On the other hand, demand for label-friendly food ingredients has increased. This study aimed to develop a rapid method mimicking real frying conditions to allow the screening of a large number of treatments with improved throughput, while evaluating their effectiveness in stabilizing frying oils. The design utilizes multi-well heating blocks of conventional OSI. Repeated frying was conducted using miniature baskets, and validations were conducted to examine the accuracy of the relative efficacy of individual treatments. Utilizing this method as a tool, natural plant extracts, standard antioxidants, and their combinations were evaluated and compared in frying palm oil, which demonstrated that the combination of tocopherols, rosemary extract, and oil-soluble green tea extract was effective for the stabilization of frying oil.

show abstract

Section: Results Of the Initial Palm Oil Screening Studymentioning

confidence: 87%

Identification of Ingredients for Stabilizing Frying Oil Through a New Screening Method

Ban¹,

Patel²,

Schroeder³

2016

J Americ Oil Chem Soc

Self Cite

View full text Add to dashboard Cite

show abstract

“…Rosmarinus officinalis L. , commonly known as rosemary, is a shrub belonging to the Lamiaceae family and native to the Mediterranean basin[1]. This plant has been widely used in traditional medicine since antiquity, and it has also been used as a food preservative and flavoring agent [2, 3].…”

Section: Introductionmentioning

confidence: 99%

Extraction of Essential Oils of Rosmarinus officinalis L. by Two Different Methods: Hydrodistillation and Microwave Assisted Hydrodistillation

Elyemni

Louaste

Nechad

et al. 2019

The Scientific World Journal

145

View full text Add to dashboard Cite

The extraction of essential oils is generally carried out by two main techniques: azeotropic distillation (hydrodistillation, hydrodiffusion, and steam distillation) and extraction with solvents. However, these traditional methods are a bit expensive, especially since they are extremely energy and solvent consuming. This work consists in studying two methods of extraction of the essential oils of Rosmarinus officinalis L.: microwave assisted hydrodistillation (MAH) and Clevenger hydrodistillation (CH). Several parameters have been studied: the extraction time, the yield, and the chemical composition of the essential oils as well as the efficiency and cost of each procedure. The results obtained revealed that microwave-assisted hydrodistillation makes it possible to minimize the extraction time of the essential oils in comparison with conventional hydrodistillation. Thus, the same yield of essential oils is obtained for 20 minutes only with MAH while it takes 180 minutes with CH. In addition, the quality of the essential oil is improved thanks to a 1.14% increase in oxygenates. In conclusion, the MAH method offers significant advantages over conventional hydrodistillation and can therefore replace it on a pilot and industrial scale.

show abstract

“…At the industrial level, oil soluble rosemary extracts are obtained via an extraction using liquid solvents or supercritical carbon dioxide. Generally, acetone , pure ethanol or hydro‐alcoholic mixtures with high content in ethanol (80–100 %) are selected to extract both carnosic (CA) and rosmarinic (RA) acids . These molecules are known as the main antioxidants in rosemary and are of special interest due to a strong market demand.…”

Section: Introductionmentioning

confidence: 99%

What is the best ethanol‐water ratio for the extraction of antioxidants from rosemary? Impact of the solvent on yield, composition, and activity of the extracts

et al. 2018

View full text Add to dashboard Cite

Extracts rich in antioxidants, such as rosemary extracts, are currently obtained by extraction of the plant material using hydro-alcoholic mixtures with high ethanol content. As this ratio is generally chosen by default and scarcely optimized, we intended to investigate the impact of the hydro-alcoholic composition on extract characteristics such as extraction yield, composition profile in selected compounds, and antioxidant/reducing activity such as Folin-Ciocalteu, DPPH, and ORAC. A theoretical determination of rosmarinic (RA) and carnosic (CA) acid solubilities in ethanol:water mixtures was also performed using COSMO-RS and was confronted to experiments. While the best solubilizing solvent (100% ethanol) was also the best extracting solvent for CA, it was not the case with RA since pure ethanol appeared as a poor solvent compared to 30% ethanol which was optimal. Finally, the best antioxidant activities were obtained with 30% ethanol.

show abstract

Antioxidant activities from different rosemary clonal lines

Cited by 14 publications

References 11 publications

Identification of Ingredients for Stabilizing Frying Oil Through a New Screening Method

Identification of Ingredients for Stabilizing Frying Oil Through a New Screening Method

Extraction of Essential Oils of Rosmarinus officinalis L. by Two Different Methods: Hydrodistillation and Microwave Assisted Hydrodistillation

What is the best ethanol‐water ratio for the extraction of antioxidants from rosemary? Impact of the solvent on yield, composition, and activity of the extracts

Contact Info

Product

Resources

About