scholarly journals COMPARISON OF LAURUS NOBILIS EXTRACTS COMPOSITION OBTAINED BY MICROWAVE EXTRACTION, SUPERCRITICAL FLUID EXTRACTION AND STEAM DISTILLATION

2019 ◽  
pp. 373-385 ◽  
Author(s):  
Oleg Igorevich Pokrovskiy ◽  
Denis Igorevich Prokopchuk ◽  
Saida Amiranovna Bagatelia ◽  
Sergei Alexandrovich Pokryshkin ◽  
Mikhail Olegovich Kostenko ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Steam Distillation ◽  
Sesquiterpene Lactones ◽  
Volatile Component ◽  
Biologically Active ◽  
Microwave Extraction ◽  
Fluid Extraction ◽  
Laurus Nobilis

A comparison of chemical composition of bay laurel extracts obtained by microwave extraction, supercritical fluid extraction and steam distillation was performed. Microwave extraction and steam distillation were shown to give similar essential oils. Microwave extract contains more monoterpenoid components, especially hydrocarbons. Steam distillation oil contains more sesquiterpenoid compounds, mostly oxygenated. SFE extract composition differs substantially from the ones obtained by two other methods. According to GC-MS data they contain much more sesquiterpenoid components, namely sesquiterpene lactones. This makes SFE a perspective candidate for isolation of biologically active compounds from laurel leaves. However, apart from valuable compound SFE extracts also contain substantial amounts of waxes as well as large quantities of some non-volatile component undetectable via GC-MS. In order to implement SFE into the practice of laurel processing one has to develop an approach for the fractionation of SFE extracts allowing isolating sesquiterpene lactone enriched fraction.

scholarly journals Supercritical Fluid Extraction of Celery and Parsley Fruit-Chemical Composition and Antibacterial Activity

Molecules ◽  
2020 ◽  
Vol 25 (14) ◽  
pp. 3163 ◽  
Author(s):  
Dusan Misic ◽  
Vanja Tadic ◽  
Malgorzata Korzeniowska ◽  
Jakov Nisavic ◽  
Ksenija Aksentijevic ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Chemical Composition ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Cytotoxic Effect ◽  
Biologically Active ◽  
Rabbit Kidney ◽  
Fluid Extraction ◽  
Fruit Extracts ◽  
Weak Activity

Supercritical fluid extraction as an environmentally friendly technology was applied to isolate biologically active extracts from celery and parsley fruits for potential applications in the food industry. The extractions were performed under mild temperature conditions of 39.85 °C and at pressures of 10 and 30 MPa. The extracts were analyzed regarding their chemical composition, antibacterial activity, and cytotoxic effect. Sedanolide was the dominant component of the celery fruit extracts, comprising more than 70% of the obtained fraction, while the content of apiole in the parsley fruit SC CO2 extracts exceeded 85%. The celery fruit extracts showed strong and moderately strong antibacterial activity against tested Staphylococcus aureus, Bacillus (B.) cereus, B. subtilis, B. circulans, Listeria (L.) greyi, L. seeligeri and L. welshimeri, with minimal inhibitory concentration (MIC) values between 160 and 640 µg/mL, and weak activity against the selected Salmonella isolates with a MIC of 2560 µg/mL. The parsley extract obtained at 10 MPa showed strong and moderately strong antibacterial effects against Bacillus strains with obtained MICs of 160–640 µg/mL, and weak activity against Staphylococcus, Listeria, and Salmonella with a MIC of 2560 µg/mL. Cytotoxicity investigation showed that the extracts with proven antibacterial activity had no cytotoxic effect on rabbit kidney cells at concentrations of up to 640 µg/mL.

scholarly journals COMPARISON OF THE QUALITATIVE COMPOSITION OF LAURUS NOBILIS LEAVES EXTRACTS OBTAINED BY SUPERCRITICAL FLUID EXTRACTION AND MICROWAVE-ASSISTED EXTRACTION

2018 ◽  
pp. 169-177 ◽  
Author(s):  
Денис (Denis) Игоревич (Igorevich) Прокопчук (Prokopchuk) ◽  
Олег (Oleg) Игоревич (Igorevich) Покровский (Pokrovskiy) ◽  
Ольга (Ol'ga) Олеговна (Olegovna) Паренаго (Parenago) ◽  
Саида (Saida) Амирановна (Аmiranovna) Багателия (Bagatelia) ◽  
Алхас (Аlkhas) Анатольевич (Аnatol'evich) Марколия (Markolia) ◽  
...  
Keyword(s):  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Process Parameters ◽  
Biologically Active ◽  
Qualitative Composition ◽  
Microwave Assisted Extraction ◽  
Fluid Extraction ◽  
Laurus Nobilis ◽  
Microwave Assisted ◽  
Assisted Extraction

Along with traditional methods for processing aroma plants, such as steam distillation or extraction with organic solvents, novel alternative approaches are developed which provide the means for a more effective isolation of biologically active compounds from plant matrices and simultaneously possess ecological attractiveness. Supercritical fluid extraction and microwave-assisted extraction can be attributed to such approaches. Their implementation into routine practice is partially hampered by somewhat vague understanding of applicability areas of these methods as well as by the lack of knowledge on the influence of process parameters on the result. In this work, we performed a comparison of the applicability of supercritical fluid and microwave-assisted extraction techniques for the isolation of biologically active compounds from leaves of Laurus nobilis L. It was shown that microwave-assisted extraction allows obtaining oil containing only volatile terpene components. Supercritical fluid extraction allows isolation of not only volatile terpenes from laurel leaves, but a broader spectrum of compounds including eugenol derivatives, phytosteroids and tocopherols. Qualitative composition of supercritical fluid extracts is virtually independent on process parameters, only quantitative differences in component proportions are registered.

scholarly journals Supercritical fluid extraction of grape seed: Process scale-up, extract chemical composition and economic evaluation

2012 ◽  
Vol 109 (2) ◽  
pp. 249-257 ◽  
Author(s):  
Juliana M. Prado ◽  
Irede Dalmolin ◽  
Natália D.D. Carareto ◽  
Rodrigo C. Basso ◽  
Antonio J.A. Meirelles ◽  
...  
Keyword(s):  
Economic Evaluation ◽  
Chemical Composition ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Scale Up ◽  
Grape Seed ◽  
Fluid Extraction ◽  
Process Scale Up ◽  
Process Scale

scholarly journals Promising Green Technology in Obtaining Functional Plant Preparations: Combined Enzyme-Assisted Supercritical Fluid Extraction of Flavonoids Isolation from Medicago Sativa Leaves

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2724
Author(s):  
Aneta Krakowska-Sieprawska ◽  
Katarzyna Rafińska ◽  
Justyna Walczak-Skierska ◽  
Anna Kiełbasa ◽  
Bogusław Buszewski
Keyword(s):  
Medicago Sativa ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Plant Material ◽  
Free Radical Scavenger ◽  
Polyphenolic Compounds ◽  
Green Technology ◽  
Biologically Active ◽  
Radical Scavenger ◽  
Fluid Extraction

To elaborate a complete extraction protocol for the enhanced release of biologically active compounds from plant cells, this study aimed to optimize together the parameters of the supercritical fluid extraction (SFE) process (temperature, pressure, and percentage of cosolvent) and enzymatic treatment of plant material (pH, enzyme concentration, time, and temperature) by response surface methodology (RSM). Medicago sativa L. was selected as a plant material due to its richness in phenolics and flavonoids. HPLC-MS/MS analysis allowed evaluating the content of individual bioactive compounds in obtained extracts. The total content of polyphenolic compounds in the extract obtained after two-step optimization was much higher (546 ± 21 µg/g) than in the extract obtained from non-hydrolyzed material (275 ± 23 µg/g) and in the extract obtained by maceration (162 ± 20 µg/g). Furthermore, it was evidenced that extract with the highest content of polyphenolic compounds can support the cellular antioxidant system both as a free radical scavenger and by stimulating the antioxidant enzyme system.

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