Investigation of Phenolic Compounds in Extracts From the Leaves of Laurus Nobilis L.

Насухова, Н. М.; Шевчук, О. М.; Logvinenko, Lidia

doi:10.19163/2307-9266-2017-5-2-150-163

Cited by 4 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Ferrulic acid was the most dominant in the S and two-component S mixtures. All detected hydroxycinnamic acids were found in previous studies of laurel [ 7 , 52 , 59 , 60 ], wild thyme [ 20 , 54 , 57 , 61 ] and sage extracts [ 8 , 19 , 56 , 61 , 62 ].…”

Section: Resultsmentioning

confidence: 58%

Non-Volatile and Volatile Bioactives of Salvia officinalis L., Thymus serpyllum L. and Laurus nobilis L. Extracts with Potential Use in the Development of Functional Beverages

et al. 2022

View full text Add to dashboard Cite

Functional beverages based on herbal extracts are highly demanded products due to the presence of bioactives with promising health benefits and interesting and characteristic sensory properties. Mediterranean medicinal and aromatic herbs contain a wide range of bioactives (non-volatile polyphenols, volatile terpenes) that are important constituents of herbal extracts and essential oils. The antioxidant capacity and potential health benefits of these bioactives could be associated with their synergistic effects. Therefore, this study aimed to characterize the non-volatile and volatile bioactives of sage (Salvia officinalis L.), wild thyme (Thymus serpyllum L.) and laurel (Laurus nobilis L.) aqueous extracts and their two- and three-component mixtures as well as their antioxidant capacity. The content of total phenols, flavonoids, hydroxycinnamic acids and flavonols was determined spectrophotometrically. Individual polyphenols were analyzed by LC-MS/MS, the volatiles were analyzed by HS-SPME/GC-MS, and the antioxidant capacity was analyzed by ORAC and DPPH assays. The results showed that aqueous extracts of all examined herbs and their mixtures contained a high content of phenolic compounds ranging from 0.97 to 2.79 g L−1 of the sample, among which the most common were flavonols. At the same time, mono- and sesquiterpenes were the main volatiles. All extracts showed high antioxidant capacity, especially L. nobilis (781.62 ± 5.19 μmol TE mL−1 of the sample in the DPPH assay; 1896.10 ± 8.77 μmol TE mL−1 of the sample in the ORAC assay) and the two-component mixture of L. nobilis and T. serpyllum (679.12 ± 5.19 μmol TE mL−1 in the DPPH assay; 1913.38 ± 8.77 μmol TE mL−1 in the ORAC assay). Mixtures of herbal extracts have been shown to possess additive or synergistic effects, consequently contributing to higher antioxidant capacity. Therefore, two-component mixtures of herbal extracts showed promising potential for the production of functional beverages.

show abstract

Section: Resultsmentioning

confidence: 58%

Non-Volatile and Volatile Bioactives of Salvia officinalis L., Thymus serpyllum L. and Laurus nobilis L. Extracts with Potential Use in the Development of Functional Beverages

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Сировина лавра благородного містить ефірні олії [3], жирні кислоти, амінокислоти, різні групи сполук фенольної природи [4,5], які мають широкий спектр біологічної активності [6 -8].…”

Section: ■ вступunclassified

Selection of the optimal extractant for the extraction of phenolic compounds from Laurus nobilis L. leaves

Posokhova¹,

Skrebtsova²,

Khvorost³

et al. 2021

J. Org. Pharm. Chem.

View full text Add to dashboard Cite

Aim. To select the optimal extractant for the extraction of a number of groups of phenolic compounds from Lаurus nоbilis L. leaves based on the determination of the quantitative content of these groups in the extracts obtained. Materials and methods. Lаurus nоbilis L. leaves were harvested in November 2020 from artificially cultivated specimens aged 5 – 7 years. The quantitative determination of polyphenols was performed using the spectrophotometric method at a wavelength of 760 nm in accordance with the requirements of the Supplement of the State Pharmacopoeia of Ukraine (SPhU) 1.2 (2.8.14). The quantitative content of this group of compounds was calculated with reference to pyrogalol and dried substance. The quantitative determination of the amount of hydroxycinnamic acids was performed according to the SPhU 2.2 monograph “Orthosyphon stamen (kidney tea) leavesN” by the spectrophotometric method at a wavelength of 505 nm and calculated with reference to rosmarinic acid. The quantitative determination of the amount of flavonoids was performed according to the SPhU 2.0 monograph “Hawthorn leaves and flowers” by the spectrophotometric method at a wavelength of 410 nm and calculated with reference to hyperoside.Results and discussion. The analysis of the results for the quantitative determination of polyphenols, the amount of hydroxycinnamic acids and the amount of flavonoids in extracts from Lаurus nоbilis L. leaves obtained using water, water-ethanol mixtures and 96 % ethanol showed that 70 % ethanol was optimal for extracting compounds of these groups. The quantitative content of polyphenols (calculated with reference to pyrogalol) was not less than 21 %, the amount of hydroxycinnamic acids (calculated with reference to rosmarinic acid) – not less than 3 %, the amount of flavonoids (calculated with reference to hyperoside) – not less than 5 %. Conclusions. For the first time, the quantitative content of a number of groups of phenolic compounds (polyphenols, the total amount of hydroxycinnamic acids, and the total amount of flavonoids) in Lаurus nоbilis L. leaves extracts obtained using various extractants has been determined. On this basis, the optimal extractant – 70 % ethanol for the extraction of phenolic compounds has been selected. The results obtained will be used when developing the technology for obtaining substances from Lаurus nоbilis L. leaves.

show abstract

To the question of the possibilities of reducing the microbiological contamination of spices

Осипова

Petrova

Laricheva

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

In order to improve the palatability of food products, vegetable spices with specific persistent aromas and tastes are added in small quantities to the cooking technology. Dried spices, as a rule, are abundantly seeded with microorganisms. Their microflora is very diverse. Food production includes strict microbiological control of raw materials. Various physical methods are used to eliminate microorganisms that inhabit spices: sterilization, ultraviolet radiation, radiation exposure, etc. It is not always possible to use these methods in production. The aim of this study was to study the possibility of reducing the microbiological contamination of spices. The objects of study were ground black pepper and bay leaf. The method of exposure to microorganisms was electron-ion processing.

show abstract

Investigation of Phenolic Compounds in Extracts From the Leaves of Laurus Nobilis L.

Abstract: Laurus nobilis L. is an evergreen dioecious, rarely monecious plant up to 15 m high. Its natural area includes Mediterranean countries. For a long time this plant has been actively cultivated as a decorative plant in (Europe, Russia, USA and others) as well as in Turkey,

Cited by 4 publications

References 3 publications

Non-Volatile and Volatile Bioactives of Salvia officinalis L., Thymus serpyllum L. and Laurus nobilis L. Extracts with Potential Use in the Development of Functional Beverages

Non-Volatile and Volatile Bioactives of Salvia officinalis L., Thymus serpyllum L. and Laurus nobilis L. Extracts with Potential Use in the Development of Functional Beverages

Selection of the optimal extractant for the extraction of phenolic compounds from Laurus nobilis L. leaves

To the question of the possibilities of reducing the microbiological contamination of spices

Contact Info

Product

Resources

About