Continuous subcritical water extraction of medicinal plant essential oil: comparison with conventional techniques

Gámiz‐Gracia, Laura; Castro, M.D. Luque de

doi:10.1016/s0039-9140(00)00294-0

Cited by 153 publications

(57 citation statements)

References 9 publications

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“…In order to enhance extraction efficiency, additional energy is put into the system either directly by heat (e.g. 70 • C), or by other techniques such as pressurized liquid extraction (Benthin et al, 1999), supercritical fluid extraction (Castioni et al, 1995;Jarvis and Morgan, 1997;Blanch et al, 1999), sonication (Sargenti and Vichnewski, 2000), subcritical water extraction (Gámiz-Gracia and de Castro, 2000), microwave techniques (Namiesnik and Gorecki, 2000), or pervaporation (Starmans and Nijhuis, 1996). Rarely data are available that compare these techniques and, furthermore, few systematic studies have been carried out on the occurrence of possible metabolite breakdown reactions caused, for example, by oxidation (Peng and Jayallemand, 1991).…”

Section: Metabolomic Sample Preparationmentioning

confidence: 99%

Metabolomics — the link between genotypes and phenotypes

Fiehn

2002

Functional Genomics

1,612

1,337

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Metabolites are the end products of cellular regulatory processes, and their levels can be regarded as the ultimate response of biological systems to genetic or environmental changes. In parallel to the terms 'transcriptome' and 'proteome', the set of metabolites synthesized by a biological system constitute its 'metabolome'. Yet, unlike other functional genomics approaches, the unbiased simultaneous identification and quantification of plant metabolomes has been largely neglected. Until recently, most analyses were restricted to profiling selected classes of compounds, or to fingerprinting metabolic changes without sufficient analytical resolution to determine metabolite levels and identities individually. As a prerequisite for metabolomic analysis, careful consideration of the methods employed for tissue extraction, sample preparation, data acquisition, and data mining must be taken. In this review, the differences among metabolite target analysis, metabolite profiling, and metabolic fingerprinting are clarified, and terms are defined. Current approaches are examined, and potential applications are summarized with a special emphasis on data mining and mathematical modelling of metabolism.

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Section: Metabolomic Sample Preparationmentioning

confidence: 99%

Metabolomics — the link between genotypes and phenotypes

Fiehn

2002

Functional Genomics

1,612

1,337

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“…Essential oil content enhanced in bushy (2.8%), early flowering (2.6%) and dwarf (2.5%) mutants of Celery and drooping branched (3.0%) and dwarf (2.7%) mutants of Ajowan than their respective controls. Several reports are there that essential oil content and its constituents depend on presence and availability of nutrients 20 ; application of fertilizer [21][22] ; plant density 22 ; method of hydrodistillation 23 ; latitude, climatic condition, day of sowing 24 , salinity 21 ; harvesting date 25 etc. In this investigation, all the data came from fertilizerless plants and seeds from uniform maturity.…”

Section: Resultsmentioning

confidence: 99%

Quantitative Estimation of Protein and Essential Oil Content of Mutants of Two Medicinal Spices of Umbelliferae

Paul¹

2017

Int. J. Res. Ayurveda Pharm.

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With the aim to develop superior plant type an induced mutagenesis programme was initiated in two medicinal spices namely Celery and Ajowan, belonging to the family Umbelliferae. Present investigation deals with quantitative estimation of seed protein and essential oil contents (from M3 harvested seeds) of the macromutants (screened at M2) obtained in two spices, in relation to control. Results indicate that protein and essential oil content enhanced in some of the mutants in comparison to control. These plant types can be selected directly and further hybridization followed by selection may offer scope to develop elite plant types which may exhibit maximization of the two parameters in one.

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“…The use of water under certain conditions (subcritical water) for the extraction of essential oils from aromatic plants is a recent [11,12] and very promising field which has promoted the development of an alternative method different from the conventional method used so far for obtaining aromatic compounds from wood.…”

Section: Introductionmentioning

confidence: 99%

Extraction of wood compounds by use of subcritical fluids

Pérez-Juan¹,

Castro

2003

Chromatographia

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A study of the extraction of oak wood compounds with subcritical water-ethanol mixtures as extractant, with an ethanol content between 0-60%, is reported. Identification and characterisation of the extracted compounds have been made by spectrophotometry and gas chromatography with either flame ionisation or mass detectors. Extraction was performed statically manner by use of a single cycle or repeated cycles. All variables affecting the extraction process were studied and optimised. Extraction time and temperature are 60 min and 200ºC, respectively. Comparison of the extract thus obtained with commercial extracts showed the former to be rich in compounds characteristic of the commercial extracts. The method enables manipulation of the extract composition by changing the temperature and water/ethanol ratio used. It is faster than the traditional procedures for obtaining wood extracts.

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Continuous subcritical water extraction of medicinal plant essential oil: comparison with conventional techniques

Cited by 153 publications

References 9 publications

Metabolomics — the link between genotypes and phenotypes

Metabolomics — the link between genotypes and phenotypes

Quantitative Estimation of Protein and Essential Oil Content of Mutants of Two Medicinal Spices of Umbelliferae

Extraction of wood compounds by use of subcritical fluids

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