Essential oils from Azorean Laurus azorica

Pedro, Luís G.; Santos, Pedro A. G.; Silva, Jaime A. da; Figueiredo, A. Cristina; Barroso, José G.; Deans, Stanley G.; Looman, Anja; Scheffer, J. J. C.

doi:10.1016/s0031-9422(00)00497-0

Cited by 33 publications

(17 citation statements)

References 8 publications

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“…The identity of the active principles of J. brevifolia, L. azorica, and H. gardnerianum was previously reported, and according to Silva et al (2000), Pedro et al (2001) and Medeiros et al (2003), the monoterpene fraction predominates in the three oils, being a-pinene the main constituent of H. gardnerianum and L. azorica and limonene of J. brevifolia.…”

Section: Discussionmentioning

confidence: 64%

Assessment of molluscicidal activity of essential oils from five Azorean plants against Radix peregra (Müller, 1774)

et al. 2012

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a b s t r a c tThe molluscicidal activity of essential oils from two endemic (Juniperus brevifolia; Laurus azorica) and three introduced (Hedychium gardnerianum; Pittosporum undulatum; Psidium cattleianum) Azorean plants against the snail Radix peregra was studied under laboratory conditions. Essential oils from leaves of H. gardnerianum, L. azorica and J. brevifolia presented promising molluscicidal activity on both adults and juveniles stages of R. peregra. The molluscicidal activity of these essential oils was found to be both time and concentration dependent. Lethal concentrations (LC 50 ) varied between 15.4 (L. azorica) and 44.6 ppm (H. gardnerianum) for juveniles and from 45.3 (H. gardnerianum) to 54.6 ppm (J. brevifolia) for R. peregra adults. Ovicidal effect, calculated as percentage of egg hatching, at 100 ppm concentration, was observed in essential oils from P. undulatum flowers (4.2% of hatching) and leaves of H. gardnerianum (4.9%), L. azorica (7.4%) and J. brevifolia (17.7%). The present study is the first attempt to assess the molluscicidal potential of some Azorean plants essential oils against a Lymnaeidae snail. In fact, the H. gardnerianum, L. azorica and J. brevifolia can offer natural alternative tools for the control of R. peregra population, but more research is needed in order to determine the mode of action of these oils and determine the side effects on the ecosystem where this freshwater snail occurs.

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Section: Discussionmentioning

confidence: 64%

Assessment of molluscicidal activity of essential oils from five Azorean plants against Radix peregra (Müller, 1774)

et al. 2012

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“…24 (E)-2-Hexenal, the most common volatile compound in many flowers, is found in Medicago sativa 25 and in fruits of yellow cashew. 26 (E)-β-Ocimene is also commonly found in many plants including leaves of red cashew, 26 Lathyrus azorica, 27 inflorescences of Origanum vulgare ssp 28 and L odoratus. 29 The volatile compounds extracted by HS-SPME using PDMS and CAR-PDMS fibers are also listed in Table 1.…”

Section: Results and Discussion Volatile Compounds By Gc-msmentioning

confidence: 99%

Analysis and characterization of aroma‐active compounds of Schizandra chinensis (omija) leaves

Zheng

Kim

et al. 2004

J Sci Food Agric

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Volatile components from leaves of Schizandra chinensis (omija), a native plant of Korea, were extracted by simultaneous distillation-extraction (SDE) and analyzed by gas chromatography-mass spectrometry (GC-MS) using two types of capillary column with different polarities (DB-5MS and DBWax). The GC-MS analysis of volatile compounds obtained by SDE revealed that germacrene D is the most abundant compound (22.6%) in omija leaves, followed by β-elemene (17.4%), (E)-2-hexenal (8.7%), and (E)-β-ocimene (7.2%). Aroma-active compounds were determined by gas chromatography-olfactometry (GC-O) using the aroma-extract-dilution analysis method. (E,Z)-2,6-Nonadienal (cucumber) was the most intense aroma-active compound due to its higher flavor-dilution factor (243-729) than any other compound. (Z)-3-Hexenal (green/apple), (E)-2-hexenal (green/fruity), and (E)-β-ocimene (wither green/grass) were also identified as important aroma-active compounds by GC-O.In addition, the volatile compounds were extracted by solid-phase microextraction (SPME), and the quantitative analysis of the SPME samples gave slightly different results, depending on the type of SPME fiber, compared with those from SDE, However, the aroma-active compounds identified in SPME were similar to those in SDE.

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“…[6,7] In the same way, phytochemical studies showed that essential oils obtained from Curcuma longa rhizomes are rich in sesquiterpenic ketones α-, β-and ar-turmerone, but in the oils obtained from leaves these compounds are lacking. [8] Also, Pedro and coworkers [9] showed that the essential oils isolated from the leaves and unripe berries of Laurus azorica were signifi cantly diff erent; although both oils were dominated by their monoterpene fraction, α-pinene (15-37%) and 1,8-cineole (12-31%) were the main constituents of the leaf oils, while trans-β-ocimene (27-45%) and α-pinene (12-22%) were the main components of the oils from the berries. In nature, these diff erences are particularly evident in entomophilous fl owers that produce and release volatile signals to attract pollinators.…”

Section: Physiological Factorsmentioning

confidence: 97%

Raw materials: the importance of quality and safety. A review.

Salgueiro

Martins

Correia

2010

Flavour & Fragrance J

107

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Aromatic plants and spices are used throughout the world for fl avouring food and beverages, as well as for food supplements, novel foods and as a source of essential oils and aromatic extracts. The non-availability or inadequacy of standards for checking and assuring the quality of aromatic plants and spices is one of the main problems that arise for industry when using such raw materials. As many aromatic plants are harvested from the wild, standardization to assure their quality is important for their safe and eff ective utilization in food and beverage industries. On the other hand, there are numerous parameters that infl uence the chemical composition of plants, which play an important role in the fi nal quality of the product and possibly in any risk arising to the consumer. Also, from a safety point of view, aromatic plants and spices should be free of undeclared contaminants and adulterants, such as toxic botanicals, pathogenic microorganisms and excessive levels of microbial toxins, pesticides or fumigation agents. We focus on these aspects and examine ways to assure their appropriate utilization from the quality and safety standpoint. The regulatory situation of medicinal and aromatic plants (MAPs) is very complicated; several diff erences in standards and regulations between countries can be found, a situation that can result in more health risks arising for consumers. To clarify some of the existing problems, the major regulations of the USA and the European Union (EU) and the borderlines between food supplements and medicines and other international standards, are briefl y described and discussed.

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Essential oils from Azorean Laurus azorica

Cited by 33 publications

References 8 publications

Assessment of molluscicidal activity of essential oils from five Azorean plants against Radix peregra (Müller, 1774)

Assessment of molluscicidal activity of essential oils from five Azorean plants against Radix peregra (Müller, 1774)

Analysis and characterization of aroma‐active compounds of Schizandra chinensis (omija) leaves

Raw materials: the importance of quality and safety. A review.

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