Changes of essential oil content and composition during convective drying of lemon balm (Melissa officinalis L.)

Argyropoulos, Dimitrios; Müller, Joachim

doi:10.1016/j.indcrop.2013.10.020

Cited by 97 publications

(59 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the present study, the yields were expressed in fresh weight basis because different authors have described EO loss in the leaves of Lamiaceae species and changes in the chemical composition of the oil due to drying processes (Argyropoulos and Müller, 2014;Sellami et al, 2012). During drying, the moisture moves Legend: c1 = α-Pinene; c2 = β-Pinene; c3 = β-Myrcene; c4 = Limonene; c5 = Eucalyptol; c6 = β-E-ocimene; c7 = Linalool; c8 = Isopulegol; c9 = Isopulegone; c10 = α-Terpineol; c11 = Verbenone; c12 = NI1; c13 = NI2; c14 = Pulegone; c15 = NI3; c16 = NI4; c17 = NI5; c18 = Caryophyllene; c19 = Germacrene D; c20 = Elixene; c21 = Ledol; c22 = Spathulenol; c23 = Caryophyllene oxide; c24 = Viridiflorol; c25 = NI6.…”

Section: Discussionmentioning

confidence: 99%

“…AUT 1-4, WIN 1-4, SPR 1-4 and SUM 1-4= Samples of EO obtained in autumn, winter, spring and summer, respectively. by diffusion from the interior of the leaves to surface and can carry the EO with it, thus affecting the productivity (Argyropoulos and Müller, 2014). According to Venskutonis (1997), depending on the drying method, the biological structure of the oil gland trichomes of some Lamiaceae species can be strongly affected.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Seasonal variability of the essential oil of Hesperozygis ringens (Benth.) Epling.

et al. 2016

View full text Add to dashboard Cite

This study was developed to evaluate the effect of seasonality on the yield and chemical composition of the essential oil (EO) of Hesperozygis ringens (Benth.) Epling, a native species from the Brazilian Pampa. Leaves were collected from four specimens of a single population in each of the four seasons for a year and were extracted in triplicate by hydro-distillation for 2 hours. The yield of EO (% w/w) was calculated on fresh weight basis (FWB), and the 16 oil samples were analyzed by gas chromatography coupled to mass spectrometry (GC-MS) and gas chromatography with flame ionization detector (GC-FID). Hierarchical Cluster Analysis (HCA) and Principal Component Analysis (PCA) were used as statistical tools to evaluate differences in chemical composition. The highest yields were obtained in autumn, spring and summer (2.32-4.38%), while the lowest yields were detected in winter, ranging from 1.15 to 1.91%. Oxygenated monoterpenoids were the predominant class of chemical constituents in the EO obtained in all seasons, showing the highest contents in autumn and summer, and pulegone was identified as a major compound, whose contents varied between 54.13 and 81.17%. The EO samples were divided into three chemical groups by HCA and PCA and were assigned to the same group, except for the three samples gathered in winter. The results showed a seasonal influence on the yield and chemical composition of the EO.Keywords: Lamiaceae, "espanta-pulga", pulegone, oxygenated monoterpenoids. Variabilidade sazonal do óleo essencial deHesperozygis ringens (Benth.) Epling. ResumoEste estudo foi desenvolvido a fim de avaliar o efeito da sazonalidade no rendimento e composição química do óleo essencial (OE) de Hesperozygis ringens (Benth.) Epling., uma espécie nativa do Pampa brasileiro. Folhas foram coletadas de quatro indivíduos de uma mesma população, em cada uma das quatro estações de um ano, e foram extraídas em triplicada por hidrodestilação durante 2 horas. O rendimento do OE (% m/m) foi calculado considerando a base fresca (BF) e as 16 amostras de óleo foram analisadas por cromatografia gasosa acoplada à espectrometria de massas (CG-EM) e cromatografia gasosa com detector de ionização de chamas (CG-DIC). Análise Hierárquica de Cluster (AHC) e Análise de Componentes Principais (ACP) foram utilizadas como ferramentas estatísticas para avaliar as diferenças na composição química. Os maiores rendimentos foram obtidos no outono, primavera e verão (2,32-4,38%), enquanto que os menores foram detectados no inverno, variando de 1,15 até 1,91%. Os monoterpenoides oxigenados foram a classe predominante dos constituintes do OE obtido em todas as estações, apresentando os maiores teores no outono e no verão, e a pulegona foi identificada como o constituinte majoritário, cujos teores variaram entre 54,13 e 81,17%. As amostras de OE foram divididas em três grupos químicos por AHC e ACP e foram classificadas no mesmo grupo, com exceção de três amostras coletadas no inverno. Os resultados demonstraram influência sazonal no rendimento e...

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Seasonal variability of the essential oil of Hesperozygis ringens (Benth.) Epling.

et al. 2016

View full text Add to dashboard Cite

show abstract

“…The leaves of balm contain high quantities of secondary metabolites. These include citronellal, citronellol, linalool, neral, geranial and geraniol (both isomers of citral), rosmarinic acid, phenolic acid, flavoglycoside acid, caffeic acid, isoquercitin, apigenin (apigenin-7-O-glucoside), beta-carophyllene, tannins, flavonoids, luteolin, hesperidin and others (Moradkhani et al, 2010;Argyropoulos and Müller, 2014). The quality and continuous production of essential oils is very important to supply market demands and the industry requirements, even under adverse environmental conditions such as drought, salinity, and extreme temperatures (Silva, 2002;Çoban and Baydar, 2016).…”

Section: Introductionmentioning

confidence: 99%

Changes in growth, oxidative metabolism and essential oil composition of lemon balm (Melissa officinalis L.) subjected to salt stress

Bonacina¹,

Trevizan²,

Stracieri³

et al. 2017

Aust J Crop Sci

View full text Add to dashboard Cite

Agricultural crops are severely affected by salinity. Recent studies have shown that salt stress signaling components affect plant metabolism and stimulate the accumulation of organic osmolytes and antioxidant substances. This work aimed at assessing the growth and development of lemon balm, Melissa officinalis L., subjected to salt stress, as well as its antioxidant response, essential oil composition, and essential oil yield (%). A completely randomized experimental design was conducted under greenhouse conditions, where 30-days-old lemon balm plants were treated with different NaCl concentrations (0, 50, 100, 150 and 200 mM) for sixty days. The highest concentrations (150 mM and 200 mM NaCl) caused significant reductions in shoot height, shoot fresh mass, relative water content, water activity and chlorophyll production due to changes in osmotic activity. The activities of superoxide dismutase (SOD) and catalase (CAT) increased in plants subjected to salinity. In addition, membrane damage (DM) increased with increase in NaCl concentration. The yield of the essential oils decreased but the number of compounds increased in all the NaCl treatments. The compounds neryl-acetate and geranyl-acetate were detected at 100, 150 and 200mM NaCl, suggesting that under salt stress, lemon balm plants activate the metabolic pathways for the production of terpenoids, consequently producing monoterpenes. Salinity negatively affected most of the parameters evaluated in lemon balm plants. Our results show that lemon balm plants are tolerant to low concentrations of salinity (up to 50mM) as proved by their distinct metabolic responses.

show abstract

“…Most scientists claim that the temperature of the drying agent and ventilation intensity has the biggest influence on the drying time [4][5][6]. It is noted that the temperatures of the drying agent also influence the losses of biologically active substances [7]. Per scientific studies the colour of most medicinal plant raw materials and active substances (essential oils, phenolic compounds including caffeic acid derivatives) are responsive to high temperature of drying agents [8; 9].…”

Section: Introductionmentioning

confidence: 99%

Aerial solar collector usage in drying technologies of medicinal and spice plants

Čiplienė

Zvicevičius

Raila

2018

Engineering for Rural Development

View full text Add to dashboard Cite

Abstract. In Lithuania small farmers more often are focusing on alternative plant production like medicinal and spice plants. Processing of medicinal-spice raw material cannot be performed without the drying process. It is known that a drying process of medicinal and spice plants takes up to 50-70 % of all its production costs. The aim of this research was to determine the possibilities of decreasing the energy consumption by using solar energy while drying medicinal and spice plants. In the medicinal plant dryer with 131 m 2 air solar collector integrated into the roof of the building, solar irradiance was 453.3 ± 317.9 W·m -2 and the ambient air temperature of 23.1 ± 3.8 ºC from 10:00 a.m. to 6:00 p.m. maintained at 31.3 ± 3.8 ºC temperature of the drying agent. It means that external solar collector, within 8 hours, converts 130.21 ± 37.3 kWh of thermal energy. The largest solar collector efficiency factor was 0.6, while comparative air flow from 1.8 to 2.0 kg·s -1 was moving over the panels. It is possible to convert 15235 kWh of thermal energy as well as to reduce about 64 % of fossil fuel or biofuel consumption and the amount of environmental emissions while using an aerial solar collector in preparation of the drying agent during the harvesting period of medicinal-spice plants.Keywords: aerial solar collector, solar radiation, drying, renewable energy. IntroductionDrying process is a technological operation in agriculture crop sector demanding the most energy of all operations. Although its thermal efficiency is only 25-50 %, this process takes up to 15 % of total energy consumption in the world [1]. Arata et al. states that concentrated energy costs can be reduced by 27-80 %, if solar conversion energy systems with 40 % of efficiency could be used in drying technologies [2]. Solar conversion energy systems are not used practically in drying technologies in Lithuania. This is because the amount of obtained solar energy is almost 2 times less, about 1000-1300 kWh·m -2 per year, compared with the countries located in tropical and subtropical climate zones [3]. Also, the harvest time of prevailing traditional farming in Lithuania is quite short and late. Recently, however, since small farmers are hardly able to compete with big farms, they started developing a nontraditional crop production, in which the medicinal herb plantations attracted a lot of attention. A large diversity of species allows farmers to create a diverse range of different medicinal herb-spice collections. Also, the period of harvesting and preparation can be allocated within an entire summer season ranging from April to September.The moisture content in medicinal plant raw material is up to 80 %. After the harvesting process the most important technological operation is to reduce the moisture content of plants raw material down to 8-12 %. To evaporate the water inside of the plants requires a plenty of thermal energy and its production costs takes up a largest part in the production cost of medicinal plant raw materials. Most scientists c...

show abstract

Changes of essential oil content and composition during convective drying of lemon balm (Melissa officinalis L.)

Cited by 97 publications

References 28 publications

Seasonal variability of the essential oil of Hesperozygis ringens (Benth.) Epling.

Seasonal variability of the essential oil of Hesperozygis ringens (Benth.) Epling.

Changes in growth, oxidative metabolism and essential oil composition of lemon balm (Melissa officinalis L.) subjected to salt stress

Aerial solar collector usage in drying technologies of medicinal and spice plants

Contact Info

Product

Resources

About