Monoterpenoids

Grayson, David H.

doi:10.1039/np9920900531

Cited by 10 publications

(5 citation statements)

References 105 publications

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“…The biosynthesis of terpenoids is often restricted to specific tissues at their sites of utilization; they comprise phytoalexins and are an important class of volatile aroma compounds found in fruits. Monoterpenes have a wide variety of scent and potentially their autooxidation following production may give rise to many other odiferous compounds (Grayson 2000 ). The change in the monoterpene signal in Fig.…”

Section: Resultsmentioning

confidence: 99%

Metabolite profiling of the ripening of Mangoes Mangifera indica L. cv. ‘Tommy Atkins’ by real-time measurement of volatile organic compounds

White

Blake

Taylor³

et al. 2016

Metabolomics

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Real-time profiling of mango ripening based on proton transfer reaction-time of flight-mass spectrometry (PTR–ToF–MS) of small molecular weight volatile organic compounds (VOCs), is demonstrated using headspace measurements of ‘Tommy Atkins’ mangoes. VOC metabolites produced during the ripening process were sampled directly, which enabled simultaneous and rapid detection of a wide range of compounds. Headspace measurements of ‘Keitt’ mangoes were also conducted for comparison. A principle component analysis of the results indicated that several mass channels were not only key to the ripening process but could also be used to distinguish between mango cultivars. The identities of 22 of these channels, tentatively speciated using contemporaneous GC–MS measurements of sorbent tubes, are rationalized through examination of the biochemical pathways that produce volatile flavour components. Results are discussed with relevance to the potential of headspace analysers and electronic noses in future fruit ripening and quality studies.

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Section: Resultsmentioning

confidence: 99%

Metabolite profiling of the ripening of Mangoes Mangifera indica L. cv. ‘Tommy Atkins’ by real-time measurement of volatile organic compounds

White

Blake

Taylor³

et al. 2016

Metabolomics

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show abstract

“…Due to their low volatility, diterpenes are barely encountered in genuine essential oils obtained by distillation, while tri‐ and higher terpenoids such as sterols or carotenoids are only present in the nonvolatile fractions such as plant resins or gums and will remain in the residue (Treibs and Merkel ; Martinetz and Hartwig ; Humphrey and Beale ). Comprehensive reviews providing structures, occurrences, and uses of terpenoids or further flavorings have been compiled by Grayson () as well as Surburg and Panten ().…”

Section: Chemical Composition Of Essential Oilsmentioning

confidence: 99%

Stability of Essential Oils: A Review

Turek

Stintzing

2013

Comp Rev Food Sci Food Safe

937

565

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In recent years, consumers have developed an ever-increasing interest in natural products as alternatives for artificial additives or pharmacologically relevant agents. Among them, essential oils have gained great popularity in the food, cosmetic, as well as the pharmaceutical industries. Constituting an array of many lipophilic and highly volatile components derived from a great range of different chemical classes, essential oils are known to be susceptible to conversion and degradation reactions. Oxidative and polymerization processes may result in a loss of quality and pharmacological properties. Despite their relevance for consumers, there is a paucity of information available addressing this issue. Therefore, the present review provides a comprehensive summary on possible changes in essential oils and factors affecting their stability. Focusing on individual essential oils, the various paths of degradation upon exposure to extrinsic parameters are outlined. Especially temperature, light, and oxygen availability are recognized to have a crucial impact on essential oil integrity. Finally, analytical methods to assess both genuine as well as altered essential oil profiles are evaluated with respect to their suitability to track chemical alterations. It is believed that only a careful inspection of essential oils by a set of convenient methods allows profound quality assessment that is relevant to producers and consumers alike.

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“…The test result of positive activity against dry extract Padina australis in ethanol 96% is the activity as an antibacterial namely class terpenoids, alkaloids, and steroids. Terpenoids compounds that have antibacterial activity are monoterpenoid, linalool, diterpenoid, phytol, triterpenoids, and saponins [21]- [23]. Based on the previous pythochemical test results, the possible compounds contained in the sample are terpenoids, phenolics, saponins, alkaloids, and tannins.…”

Section: Active Compound Test Using Gc-ms Methodsmentioning

confidence: 99%

Toxicity and Compound Identification of Padinaaustralis Extract

2019

ijrte

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People awareness of the importance of health has increased significantly in the last decade, it forces people to find alternative treatments which are cheaper and safer when compared with the use of synthetic drugs. Research on antibacterial activity of Padina australis against Escherichia coli have been conducted, but it does not identified yet which active compounds in the Padina australis extract that has potential as an antibacterial. Identification phytol compounds from the extracts of Padina australis and toxicity tests have been conducted using BSLT and GCMS methods. The results of this research identify that Padina australis extract with ethanol has antibacterial activity value of LC50 177.83 ppm. Phytochemical test results show that active ingredient of Padina australis extract is terpenoid compounds, and that triterpenoids has potential as an antibacterial. GC-MS test result shows that active compound of Padina australis extract consists of phytol compound which has 90-99% similarity with steroids, phenols, fatty acids, carboxylic acids, hydrocarbons, and proteins. Compound identification test of active Padina australis extracts through GC-MS methods show that phytol compounds are useful as antibacterial and the toxicity test results show that phytol compounds are not cytotoxic.

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Monoterpenoids

Cited by 10 publications

References 105 publications

Metabolite profiling of the ripening of Mangoes Mangifera indica L. cv. ‘Tommy Atkins’ by real-time measurement of volatile organic compounds

Metabolite profiling of the ripening of Mangoes Mangifera indica L. cv. ‘Tommy Atkins’ by real-time measurement of volatile organic compounds

Stability of Essential Oils: A Review

Toxicity and Compound Identification of Padinaaustralis Extract

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