Drying Sage (Salvia officinalis L.) Plants and Its Effects on Content, Chemical Composition, and Radical Scavenging Activity of the Essential Oil

Sellami, Ibtissem Hamrouni; Rebey, Iness Bettaieb; Sriti, Jazia; Rahali, Fatma Zohra; Limam, Férid; Marzouk, Brahim

doi:10.1007/s11947-011-0661-0

Cited by 80 publications

(47 citation statements)

References 37 publications

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“…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%

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

et al. 2016

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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...

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Section: Discussionmentioning

confidence: 99%

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

et al. 2016

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“…In the last decade, the use of microwave-assisted drying for medicinal and aromatic plants has been investigated thoroughly [6,9,13,30] due to the general association of high-quality end products when microwave drying is used [31]. Microwave irradiation can be used autonomously, or in combination with other technologies such as hot-air drying, either as an initial step (pre-drying) or as the final stage of drying.…”

Section: Drying Technologiesmentioning

confidence: 99%

“…In particular, aromatic plants such as rosemary, peppermint, spearmint and sage that were dried under mild temperatures, produce extracts and essential oils with higher antioxidant activity [8,9,80,82].…”

Section: Bioactive Composition and Antioxidant Capacitymentioning

confidence: 99%

“…At the same time, the raw material's organoleptic characteristics should be preserved, principally color and aroma, which are the main quality attributes influencing consumer acceptability [4,5]. It is well-known that the choice of both drying method and applied drying conditions are critical for the end product, since they may lead to undesirable changes in appearance, texture, flavor and color [6,7], losses of nutraceutical content [3,6] or healthpromoting properties [8,9].…”

Section: Introductionmentioning

confidence: 99%

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Drying Technologies: Vehicle to High-Quality Herbs

2015

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Herbs are usually marketed as dry due to a consumer demand beyond their seasonality; dehydration leads to a stable, easily moveable product that is available throughout the year. The process of drying, though, leads to modifications in the appearance, composition and quality of the raw material. The extent of these alterations depends on the applied drying methodology and its parameters, rendering the optimization of this process imperative. Numerous studies examining the effect of drying on the main characteristics of herbs have been published in recent years, and this review aims at organizing the available information of the studied herbs, drying methods and measured parameters in a comprehensive manner. Primarily, since aroma is the main characteristic of herbs and the principal aim for the end product is to retain the raw material's character, this review will focus on the most widely studied effect of drying, which is the essential oil yield and composition. Secondly, results from various studies on the influence of drying on biochemical compounds, organoleptic properties of dried herbs are also presented. The most common approach to the study of drying kinetics is also presented. Finally, novel technologies targeting to minimize the magnitude of changes from the raw material are described.

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“…Os idioblastos secretores se distinguem das estruturas multicelulares pelo conteúdo, forma, tamanho e espessamento da parede (FARAGO et al, 2005), motivo pelo qual o OE contido nessas estruturas está protegido, e, assim, a perda por volatilização durante o processo de secagem não ocorre. Ao contrário, os OE contidos em estruturas secretoras externas como os tricomas glandulares, dependendo do método de secagem, são fortemente afetados (VENSKUTONIS, 1997;SELLAMI et al, 2012).…”

Section: Al 2015)unclassified

ANÁLISE DO EFEITO DA SAZONALIDADE SOBRE O RENDIMENTO DO ÓLEO ESSENCIAL DAS FOLHAS DE Nectandra grandiflora Nees1

et al. 2015

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RESUMO -Este estudo teve por objetivos avaliar o efeito da sazonalidade sobre o teor de óleo essencial (OE) presente nas folhas de Nectandra grandiflora Nees e determinar se a secagem do material vegetal à temperatura ambiente influencia o rendimento do OE. Para tanto, foi coletado material vegetal de 12 indivíduos ao longo de um ano, e o OE foi extraído separadamente de folhas frescas e folhas secas, pelo método de hidrodestilação. Paralelamente, 20 g de folhas frescas foram levados à estufa a 40 °C até peso constante, para determinação do teor de umidade, procedimento esse realizado para cada coleta, individualmente. O rendimento de OE das folhas (% m/m) foi calculado para o material vegetal fresco com base em massa de matéria seca, determinado considerando o teor de umidade, bem como para o material seco à temperatura ambiente. Os dados de rendimento foram analisados através do teste de Tukey (P<0,05). Os resultados mostraram que o teor de OE das folhas da espécie apresentou variabilidade sazonal, com a maior produção detectada na primavera (0,75 ± 0,06%). Esse valor foi estatisticamente diferente dos rendimentos encontrados nas outras estações do ano, sendo o menor rendimento obtido no inverno (0,39 ± 0,02%). Desse modo, indicase que a coleta de folhas de N. grandiflora seja realizada durante a primavera, visando obter maior teor de OE. Adicionalmente, verificou-se que não há perda de teor OE durante o processo de secagem à temperatura ambiente e, dessa forma, esse procedimento pós-colheita poderá vir a ser adotado sem comprometer o rendimento do extrativo.Palavras-chave: Extrativos vegetais; Lauraceae; Produtos florestais não madeireiros. ANALYSIS OF THE SEASONALITY EFFECT ON THE ESSENTIAL OIL YIELD OF LEAVES OF Nectandra grandiflora NeesABSTRACT -This study aimed to evaluate the effect of seasonal variability on the yield of essential oil (EO) present in leaves of Nectandra grandiflora Nees and as well as to determine whether the drying process at room temperature of the plant material influences the yield of this EO. Plant material was collected from 12 individuals over a year and EO was extracted by hydrodestillation separately from fresh and dried leaves. Simultaneously, 20 g of fresh leaves was taken to stove at 40 ºC to constant weight for determination of moisture content. This procedure was performed for each collection individually. The yield of EO in leaves (% w/w) was calculated for fresh plant material based on dry matter, determined by considering the moisture content, as well as for the material dried at room temperature. The yields were analyzed by Tukey test (P<0.05). Results

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Drying Sage (Salvia officinalis L.) Plants and Its Effects on Content, Chemical Composition, and Radical Scavenging Activity of the Essential Oil

Cited by 80 publications

References 37 publications

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

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

Drying Technologies: Vehicle to High-Quality Herbs

ANÁLISE DO EFEITO DA SAZONALIDADE SOBRE O RENDIMENTO DO ÓLEO ESSENCIAL DAS FOLHAS DE Nectandra grandiflora Nees1

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