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.

Influence of common juniper berries pretreatment on the essential oil yield, chemical composition and extraction kinetics of classical and microwave-assisted hydrodistillation

2018 ◽  
Vol 122 ◽  
pp. 402-413 ◽  
Author(s):  
Miljana S. Marković ◽  
Dragana B. Radosavljević ◽  
Vladimir P. Pavićević ◽  
Mihailo S. Ristić ◽  
Svetomir Ž. Milojević ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Oil Yield ◽  
Extraction Kinetics ◽  
Microwave Assisted ◽  
Kinetics Of ◽  
Essential Oil Yield ◽  
Common Juniper

scholarly journals Essential oil yield and composition of ginger (Zingiber officinale Roscoe) rhizomes after different drying periods

2011 ◽  
Vol 13 (1) ◽  
pp. 79-84 ◽  
Author(s):  
I.C.M Dabague ◽  
C Deschamps ◽  
A.F Mógor ◽  
A.P Scheer ◽  
L Côcco
Keyword(s):  
Mass Spectrometry ◽  
Essential Oil ◽  
Room Temperature ◽  
Zingiber Officinale ◽  
Oil Yield ◽  
Gas Chromatography Mass Spectrometry ◽  
Geranyl Acetate ◽  
Type Device ◽  
Zingiber Officinale Roscoe ◽  
Essential Oil Yield

Ginger production in Paraná State, Brazil, has predominated in Morretes Municipality, with around 300 ha cultivated area. The aim of this work was to evaluate the essential oil yield and composition of ginger rhizomes produced in Morretes and subjected to different drying periods at room temperature. Experimental design was completely randomized, in a 5x5 factorial arrangement, with four replicates (four plants each), five origins and five drying periods at room temperature (0, 15, 30, 45 and 60 days). The essential oil was extracted by hydrodistillation in a Clevenger-type device for 3h and the constituents were analyzed by gas chromatography-mass spectrometry (GC/MS). The drying of ginger rhizomes at room temperature for up to 60 days decreased the essential oil yield in most origins. Geranial and neral levels were higher in all origins and as drying periods were longer. Geraniol and geranyl acetate levels decreased after drying in all origins, as well as eucalyptol, camphene, zingiberene and β-bisabolene in most origins.

scholarly journals Diversity in chemical composition and yield of essential oil from two Mentha species

Genetika ◽  
2016 ◽  
Vol 48 (3) ◽  
pp. 1101-1110 ◽  
Author(s):  
Ahmad Golparvar ◽  
Amin Hadipanah
Keyword(s):  
Essential Oil ◽  
Plant Material ◽  
Dry Matter ◽  
Oil Yield ◽  
Gas Chromatography Mass Spectrometry ◽  
Chemical Components ◽  
Mentha Spicata ◽  
Aerial Parts ◽  
Significant Difference ◽  
Essential Oil Yield

The genus Mentha, which belongs to the mint family (Lamiaceae). Essential oil yield and chemical components of two Mentha species including Mentha longifolia (L.) Huds. and (Mentha spicata L.) collected from three ecotypes in Iran were investigated. The essential oils of samples were obtained by hydro-distillation, and analyzed using gas chromatography-mass spectrometry (GC-MS). A significant difference (p < 0.05) in oil yields was obtained from the aerial parts of two Mentha species. The essential oil yields were obtained from the aerial of M. longifolia, 0.62, 0.85 and 1.24 ml / 100 g dry matter identified in Ardestan, Saman and Kuhrang province, respectively and the aerial of M. spicata, 0.49, 1.02 and 1.54 ml / 100 g dry matter identified in Ardestan, Saman and Kuhrang province, respectively. Results indicated significant differences (p < 0.01) among the aerial for the main constituents in the essential oil from two Mentha species. The major constituents of the essential oil from the aerial of M. longifolia collected from Ardestan province were pulegone (31.21%), 1,8-cineole (23.01%), sabinene (6.76%), the aerial of M. longifolia collected from Saman province were pulegone (31.06%), 1,8-cineole (24.34%), sabinene (7.45%) and the aerial of M. longifolia collected from Kuhrang province were pulegone (36.42%) and 1,8-cineole (29.49%). The major constituents of the essential oil from the aerial of M. spicata collected from Ardestan province were 1,8-cineole (35.28%), carvone (30.71%), the aerial of M. spicata collected from Saman province were carvone (35.37%), 1,8-cineole (24.35%), pulegone (18.67%) and the aerial of M. spicata collected from Kuhrang province were carvone (41.51%), 1,8-cineole (25.95%). Generally, a comparison of our results with the previous reports suggests differences in the essential oil compositions and oil yield of the plant material could be attributed to genetic diversity in two Menthe species.

scholarly journals Volatile Fraction of Lavender and Bitter Fennel Infusion Extracts

2010 ◽  
Vol 5 (9) ◽  
pp. 1934578X1000500 ◽  
Author(s):  
Christine Tschiggerl ◽  
Franz Bucar
Keyword(s):  
Essential Oil ◽  
Plant Material ◽  
Solid Phase ◽  
Oil Yield ◽  
Volatile Fraction ◽  
Linalyl Acetate ◽  
Foeniculum Vulgare ◽  
Linalool Oxide ◽  
Proportional Decrease ◽  
Essential Oil Yield

The relative proportions of chemical classes (hydrocarbons, oxides, alcohols/ethers, aldehydes/ketones, acids/esters/lactones) in the essential oil of lavender ( Lavendula Angustifolia Mill., family Lamiaceae) and bitter fennel ( Foeniculum vulgare Mill. subsp. vulgare var. vulgare (Mill.) Thellung, family Apiaceae) and in the volatile fraction of infusion extracts were examined and showed remarkable differences. The volatile compounds of infusions were isolated by hydrodistillation and solid phase extraction (SPE). Their qualitative and semiquantitative compositions were compared with the essential oil isolated by hydrodistillation directly from the plant material and analyzed by GC-MS. Furthermore, quantification of the major constituents of lavender oil and of the volatile fraction obtained by hydrodistillation of the infusion was performed. Comparison of the total essential oil yield quantified by hydrodistillation of the lavender infusion (0.7% v/w, corresponding to plant material) with the essential oil yield of the blossoms (5.1% v/w) revealed that only 13.9% of the initial oil could be extracted by infusion. The main constituents of the volatile fraction of the lavender infusion were (hydrodistillation/SPE): linalool (39.3%/28.2%), 1,8 cineole (24.8%/18.9%), cis-linalool oxide (furanoid) (5.8%/8.0%), trans-linalool oxide (furanoid) (4.1%/7.1%), camphor (5.3%/4.0%) and α-terpineol (4.0%/3.0%). The major constituents of lavender essential oil were linalool (28.8%), 1,8-cineole (18.05%), linalyl acetate (13.9%) and α-terpineol (4.0%). Most intriguing, in the volatile fraction of lavender infusion a significant proportional decrease of linalyl acetate and an increase of linalool oxides was recognized. The essential oil yield of fennel fruits was 12.5% v/w, whereas 1.8% v/w volatile fraction (corresponding to plant material) was obtained by hydrodistillation of the fennel infusion, which is equivalent to 14.5% of the initial fennel essential oil. The main constituents of the volatile fraction of the fennel infusion were (hydrodistillation/SPE): trans-anethole (56.4%/54.8%), fenchone (36.2%/39.5%) and estragole (2.5%/2.2%), which were also the major compounds of the genuine bitter fennel essential oil. In infusions, the proportion of ethers vs. ketones was shifted significantly towards a higher proportion of the latter compared with the essential oil obtained from the fruits.

scholarly journals Effect of drying method and storage conditions on the essential oil yield and composition in Eugenia uniflora L. leaves

2020 ◽  
Vol 14 (2) ◽  
Author(s):  
Ana Lucia Alves De Assis ◽  
Roger Raupp Cipriano ◽  
Francine Lorena Cuquel ◽  
Cícero Deschamps
Keyword(s):  
Essential Oil ◽  
Ambient Temperature ◽  
Storage Period ◽  
Storage Conditions ◽  
Oil Yield ◽  
Gas Chromatography Mass Spectrometry ◽  
Drying Method ◽  
Eugenia Uniflora ◽  
And Storage ◽  
Essential Oil Yield

The essential oil produced by Eugenia uniflora leaves is intensively used by the cosmetic, pharmaceutic and perfumery industries mainly because its antioxidant effect and antimicrobial and antihelmintic ativities. Drying and storage of the aromatic plant leaves can affect the yield and quality of its essential oil. This study aimed to evaluate the effect of drying method and storage conditions on the essential oil yield and composition in Eugenia uniflora leaves. The essential oil were extracted from dried leaves at ambient temperature and at 45°C for six drying periods (0, 6, 24, 48, 72 and 96 hours-h). The essential oil yield was also analysed after 0, 60, 120, and 180 days of storage in three types of packaging. The oil was extracted by hydrodistillation and the composition was determined by gas chromatography-mass spectrometry. Results showed that drying the leaves at ambient temperature and 45°C for 48 and 24 h, respectively, increased the essential oil yield. At 45°C the monoterpene and sesquiterpene compounds increased, with curzerene+viridiflorene identified as the major compounds. Package types did not affect the essential oil yield but the increase of the storage period decreased it.

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.

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