Isolation of Essential Oil from the Leaves of Cymbopogon martinii using Hydrodistillation: Effect on Yield of Essential Oil, Yield of Geraniol and Antimicrobial Activity

2016 ◽  
Vol 19 (8) ◽  
pp. 1943-1956 ◽  
Author(s):  
Miral R. Thakker ◽  
Jigisha K. Parikh ◽  
Meghal A. Desai
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Oil Yield ◽  
Cymbopogon Martinii ◽  
Effect On Yield ◽  
Essential Oil Yield

scholarly journals Effect of shading and nitrogen fertilization on nitrogen metabolism, essential oil content and antimicrobial activity of Achillea millefolium

2020 ◽  
Vol 42 ◽  
pp. e46412
Author(s):  
Milene Conceição Lima ◽  
Cristiane Jovelina Da-Silva ◽  
Marcio Paim Mariot ◽  
Rogério Antônio Freitag ◽  
Rosana Serpa ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Nitrogen Metabolism ◽  
Nitrogen Fertilization ◽  
Nitrogen Supply ◽  
Reproductive Stage ◽  
Oil Yield ◽  
Vegetative Stage ◽  
Achillea Millefolium ◽  
Essential Oil Yield

The Achillea millefolium L. is a perennial herb with important antibacterial, antifungal, anti-inflammatory, antitumoral, and antioxidant properties. This research aimed to investigate the effect of shading (75%; black net) and nitrogen fertilization (0, 75 and 150 kg urea ha-1) on the nitrogen metabolism, essential oil yield and antimicrobial activity of A. millefolium at vegetative- and reproductive-stage. The evaluated parameters varied depending on the organ and the phenological stage of the plant considered. Overall, our findings indicated that shading decreased nitrogen assimilation. Decreased activities of nitrate reductase and glutamine synthetase were observed on shaded plants during reproductive and vegetative stages, respectively. Nitrate and total amino acid levels increased in shaded plants at the vegetative stage. Regarding nitrogen supply, the improved nitrogen metabolism and essential oil yield values were accompanied by intermediate concentrations of urea (75 kg ha-1). Plants fertilized with 75 kg urea ha-1 produced the highest amino acids concentration (vegetative stage), ammonium concentration (vegetative stage) and essential oil yield (reproductive stage). Shading or nitrogen supply did not influence the microbial activity of A. millefolium essential oil. However, the essential oil of leaves and flowers were highly effective against fungi and bacteria, especially gram-positive bacteria. In conclusion, the current study showed that full light and 75 kg urea ha-1 enhanced the nitrogen metabolism of A. millefolium in both vegetative and reproductive stages.

scholarly journals Essential Oil Yield and Chemical Composition Changes during Leaf Ontogeny of Palmarosa (Cymbopogon martinii var. motia)

2010 ◽  
Vol 5 (12) ◽  
pp. 1934578X1000501 ◽  
Author(s):  
Bhaskaruni R. Rajeswara Rao ◽  
Dharmendra K. Rajput ◽  
Rajendra P. Patel ◽  
Somasi Purnanand
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Oil Recovery ◽  
Biomass Yield ◽  
Oil Yield ◽  
Leaf Biomass ◽  
Leaf Ontogeny ◽  
Leaf Essential Oil ◽  
Cymbopogon Martinii ◽  
Essential Oil Yield

Changes in leaf biomass yield, essential oil yield, and chemical composition were investigated during leaf ontogeny of palmarosa { Cymbopogon martinii (Roxb.) Wats. var. motia Burk., family Poaceae}. Eleven leaves representing different developmental stages, serially numbered from the apex to the base of the plant were utilized for the study. Leaf biomass yield increased up to the eighth leaf. Essential oil recovery increased up to the third leaf; thereafter it decreased. Minimum essential oil recovery was observed in the eleventh leaf. Essential oil yield/leaf increased up to the sixth leaf. Essential oil yield and concentrations of linalool, α-terpineol, geranyl isobutyrate and geraniol were relatively higher in the essential oils of mature, older leaves. Essential oil recovery, and percentages of myrcene, β-caryophyllene, geranyl acetate, ( E, Z) farnesol and geranyl hexanoate were higher in the essential oils of young, expanding leaves.

EFFECT OF DIFFERENT ABIOTIC STRESS ON ESSENTIAL OIL YIELD FROM AERIAL PART OF CYMBOPOGON FLEXUOSUS (NEES EX STEUD) WATS.

2016 ◽  
Vol 4 (12) ◽  
pp. 1490-1504
Author(s):  
Vinutha M ◽  
◽  
Suchetha M. ◽  
K.J.Thara Saraswathi. ◽  
◽  
...  
Keyword(s):  
Abiotic Stress ◽  
Essential Oil ◽  
Aerial Part ◽  
Oil Yield ◽  
Cymbopogon Flexuosus ◽  
Essential Oil Yield

scholarly journals Identification of VOCs in essential oils extracted using ultrasound- and microwave-assisted methods from sweet cherry flower

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Huimin Zhang ◽  
Hongguang Yan ◽  
Quan Li ◽  
Hui Lin ◽  
Xiaopeng Wen
Keyword(s):  
Essential Oil ◽  
Sweet Cherry ◽  
Dimethyl Sulfide ◽  
Solid Phase ◽  
Oil Yield ◽  
Gas Chromatography Mass Spectrometry ◽  
Process Conditions ◽  
Important Indicator ◽  
Microwave Assisted ◽  
Essential Oil Yield

AbstractThe floral fragrance of plants is an important indicator in their evaluation. The aroma of sweet cherry flowers is mainly derived from their essential oil. In this study, based on the results of a single-factor experiment, a Box–Behnken design was adopted for ultrasound- and microwave-assisted extraction of essential oil from sweet cherry flowers of the Brooks cultivar. With the objective of extracting the maximum essential oil yield (w/w), the optimal extraction process conditions were a liquid–solid ratio of 52 mL g−1, an extraction time of 27 min, and a microwave power of 435 W. The essential oil yield was 1.23%, which was close to the theoretical prediction. The volatile organic compounds (VOCs) of the sweet cherry flowers of four cultivars (Brooks, Black Pearl, Tieton and Summit) were identified via headspace solid phase microextraction (SPME) and gas chromatography–mass spectrometry (GC–MS). The results showed that a total of 155 VOCs were identified and classified in the essential oil from sweet cherry flowers of four cultivars, 65 of which were shared among the cultivars. The highest contents of VOCs were aldehydes, alcohols, ketones and esters. Ethanol, linalool, lilac alcohol, acetaldehyde, (E)-2-hexenal, benzaldehyde and dimethyl sulfide were the major volatiles, which were mainly responsible for the characteristic aroma of sweet cherry flowers. It was concluded that the VOCs of sweet cherry flowers were qualitatively similar; however, relative content differences were observed in the four cultivars. This study provides a theoretical basis for the metabolism and regulation of the VOCs of sweet cherry flowers.

scholarly journals Essential Oils of Four Virginia Mountain Mint (Pycnanthemum virginianum) Varieties Grown in North Alabama

Plants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1397
Author(s):  
William N. Setzer ◽  
Lam Duong ◽  
Trang Pham ◽  
Ambika Poudel ◽  
Cuong Nguyen ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
University Research ◽  
Oil Yield ◽  
Research Station ◽  
Continuous Extraction ◽  
Chromatographic Techniques ◽  
Relative Differences ◽  
Essential Oil Yield ◽  
Very High

Virginia mountain mint (Pycnanthemum virginianum) is a peppermint-flavored aromatic herb of the Lamiaceae and is mainly used for culinary, medicinal, aromatic, and ornamental purposes. North Alabama’s climate is conducive to growing mint for essential oils used in culinary, confectionery, and medicinal purposes. There is, however, a need for varieties of P. virginianum that can be adapted and easily grown for production in North Alabama. Towards this end, four field-grown varieties with three harvesting times (M1H1, M1H2, M1H3; M2H1, M2H2, M2H3; M3H1, M3H2, M3H3, M4H1, M4H2, M4H3) were evaluated for relative differences in essential oil yield and composition. Thirty-day-old greenhouse-grown plants of the four varieties were transplanted on raised beds in the field at the Alabama A & M University Research Station in North Alabama. The plots were arranged in a randomized complete block with three replications. The study’s objective was to compare the four varieties for essential oil yield and their composition at three harvest times, 135, 155, and 170 days after planting (DAP). Essential oils were obtained by hydrodistillation with continuous extraction with dichloromethane using a Likens–Nickerson apparatus and analyzed by gas chromatographic techniques. At the first harvest, the essential oil yield of the four varieties showed that M1H1 had a yield of 1.15%, higher than M2H1, M3H1, and M4H1 with 0.91, 0.76, and 1.03%, respectively. The isomenthone concentrations increased dramatically through the season in M1 (M1H1, M1H2, M1H3) by 19.93, 54.7, and 69.31%, and M3 (M3H1, M3H2, M3H3) by 1.81, 48.02, and 65.83%, respectively. However, it increased only slightly in M2 and M4. The thymol concentration decreased slightly but not significantly in all four varieties; the thymol in M2 and M4 was very high compared with M1 and M3. The study showed that mountain mint offers potential for production in North Alabama. Two varieties, M1 and M3, merit further studies to determine yield stability, essential oil yield, composition, and cultivation development practices.

Silicon nanoparticles elicit an increase in lemongrass (Cymbopogon flexuosus (Steud.) Wats) agronomic parameters with a higher essential oil yield

2021 ◽  
Vol 412 ◽  
pp. 125254
Author(s):  
Mohammad Mukarram ◽  
M. Masroor A. Khan ◽  
Francisco J. Corpas
Keyword(s):  
Essential Oil ◽  
Silicon Nanoparticles ◽  
Oil Yield ◽  
Cymbopogon Flexuosus ◽  
Essential Oil Yield
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