In this study, antioxidant and antimicrobial activities of essential oils obtained from oregano (Origanum vulgare ssp. hirtum) were determined by using solvent-free microwave extraction (SFME), supercritical fluid extraction, and conventional hydrodistillation (CH) methods. The inhibitory effects on the 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) radical of essential oils obtained from oregano by using SFME and CH were similar. However, essential oil extracted by CH showed greater (2.69 μmol/μL of oil) Trolox equivalent antioxidant capacity (TEAC) than oregano oils obtained by SFME (P < .05). The difference between percentage inhibition and TEAC values most probably is due to the fact that undiluted and diluted samples are used in the percentage inhibition assay and the TEAC assay, respectively. TEAC values of oregano essential oils obtained by SFME at different microwave power levels were found to be similar and ranged from 0.72 to 0.84 μmol/μL of oil. Essential oils obtained by CH and SFME at different microwave powers inhibited the survival of Listeria monocytogenes, Salmonella typhimurium, and Escherichia coli O157:H7, whereas survival of Staphylococcus aureus was not influenced. In addition, oregano oil obtained by SFME at 40% power level did not show any inhibitory effect on E. coli O157:H7.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1089/jmf.2010.0098 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Ultrasonic emulsification of Cananga odorata nanoemulsion formulation for enhancement of herbicidal potential.
Sci Rep
January 2025
School of Science, King Mongkut's Institute of Technology Ladkrabang, Bangkok, 10520, Thailand.
A nanoemulsion was fabricated from Cananga odorata essential oil (EO) and stabilized by incorporation of Tween 80 using ultrasonication. The major constituents of the EO were benzyl benzoate, linalool, and phenylmethyl ester. Differing sonication amplitude (20-60%) and time (2-10 min) were assessed for effects on nanoemulsion droplet size and polydispersity index (PI).
View Article and Find Full Text PDFAnti-inflammatory activity of essential oil from medicinal plants: An insight into molecular mechanism, in-silico studies and signaling pathways.
Phytomedicine
January 2025
Centre for Industrial Biotechnology Research, Siksha 'O' Anusandhan Deemed to be University, Campus 2, Kalinganagar, Bhubaneswar-751003, Odisha, India. Electronic address:
Background: Medicinal plants have historically been the cornerstone of treatment for a myriad of ailments. With modern pharmacology, many contemporary drugs have been derived from traditional medicine practices. Essential oils from these plants, known for their anti-inflammatory capabilities, have played a significant role in treating conditions such as cardiovascular and inflammatory skin diseases, as well as joint inflammation.
View Article and Find Full Text PDFAn unconventional separation method of α-Terpineol from its isomer 1,8-Cineole via in situ-association formation of deep eutectic solvent and machine learning.
J Chromatogr A
January 2025
College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, PR China. Electronic address:
α-Terpineol and 1,8-cineole are two important compounds in essential oils. This study developed an efficient method to recover α-terpineol from model oil (MO) based on association extraction by in situ formations of deep eutectic solvent (DES) between α-terpineol and some quaternary ammonium salts (QASs) by hydrogen-bond (HB) interaction. Such interaction could be broken almost completely by the introduction of water, due to the stronger HB interaction between water and QASs, which could release α-terpineol by liquid-liquid separation and save the organic solvents consumption.
View Article and Find Full Text PDFComprehensive characterization of the bHLH transcription factor family in Curcuma wenyujin and functional elucidation of CwbHLH27 in jasmonate-regulated sesquiterpenoid biosynthesis.
Plant Physiol Biochem
January 2025
School of Pharmacy, Hangzhou Normal University, Hangzhou, Zhejiang, 311121, China; Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, 311121, China; School of Pharmaceutical Sciences, Shanghai Jiao Tong University, Shanghai, 200030, China; Xinchang Pharmaceutical Factory, Zhejiang Medicine CO., LTD, China. Electronic address:
Curcuma wenyujin is acknowledged as a crucial medicinal plant containing essential oils, primarily composed of sesquiterpenoids. While numerous sesquiterpenoids exhibit versatile physiological activities, their levels in C. wenyujin are generally low, particularly the pivotal anti-cancer component elemene.
View Article and Find Full Text PDFPlant Resin Delivery by Nanovectors as an Emerging Approach to Boost Solubility, Permeability and Bioavailability.
Pharmaceutics
January 2025
Department of Chemistry "Ugo Schiff" (DICUS), University of Florence, Via Ugo Schiff 6, 50019 Sesto Fiorentino, Italy.
Resins are complex mixtures of natural constituents containing non-volatile and volatile terpenes, in combination with gums and polyphenols, used since ancient times for their medicinal properties. Current research has evidenced their therapeutic value with a plethora of activities. The main limits of resins and their constituents for their clinical use are low water solubility, poor stability and bioavailability.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!