Debunking Functional Group Theory: Not Supported by Current Evidence and Not a Useful Educational Tool
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Retention Indices for Frequently Reported Compounds of Plant Essential Oils
Retention Indices for Frequently Reported Compounds of Plant Essential Oils V. I. Babushok,a) P. J. Linstrom, and I. G. Zenkevichb) National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA (Received 1 August 2011; accepted 27 September 2011; published online 29 November 2011) Gas chromatographic retention indices were evaluated for 505 frequently reported plant essential oil components using a large retention index database. Retention data are presented for three types of commonly used stationary phases: dimethyl silicone (nonpolar), dimethyl sili- cone with 5% phenyl groups (slightly polar), and polyethylene glycol (polar) stationary phases. The evaluations are based on the treatment of multiple measurements with the number of data records ranging from about 5 to 800 per compound. Data analysis was limited to temperature programmed conditions. The data reported include the average and median values of retention index with standard deviations and confidence intervals. VC 2011 by the U.S. Secretary of Commerce on behalf of the United States. All rights reserved. [doi:10.1063/1.3653552] Key words: essential oils; gas chromatography; Kova´ts indices; linear indices; retention indices; identification; flavor; olfaction. CONTENTS 1. Introduction The practical applications of plant essential oils are very 1. Introduction................................ 1 diverse. They are used for the production of food, drugs, per- fumes, aromatherapy, and many other applications.1–4 The 2. Retention Indices ........................... 2 need for identification of essential oil components ranges 3. Retention Data Presentation and Discussion . 2 from product quality control to basic research. The identifi- 4. Summary.................................. 45 cation of unknown compounds remains a complex problem, in spite of great progress made in analytical techniques over 5. -
The Following Carcinogenic Essential Oils Should Not Be Used In
Aromatherapy Undiluted- Safety and Ethics Copyright © Tony Burfield and Sylla Sheppard-Hanger (2005) [modified from a previous article “A Brief Safety Guidance on Essential Oils” written for IFA, Sept 2004]. Intro In the last 20 years aromatherapy has spread its influence to the household, toiletries and personal care areas: consumer products claiming to relax or invigorate our psyche’s have invaded our bathrooms, kitchen and living room areas. The numbers of therapists using essential oils in Europe and the USA has grown from a handful in the early 1980’s to thousands now worldwide. We have had time to add to our bank of knowledge on essential oils from reflecting on many decades of aromatherapeutic development and history, the collection of anecdotal information from practicing therapists, as well as from clinical & scientific investigations. We have also had enough time to consider the risks in employing essential oils in therapy. In the last twenty years, many more people have had accidents, been ‘burnt’, developed rashes, become allergic, and become sensitized to our beloved tools. Why is this? In this paper, we hope to shed light on this issue, clarify current safety findings, and discuss how Aromatherapists and those in the aromatherapy trade (suppliers, spas, etc.) can interpret this data for continued safe practice. After a refresher on current safety issues including carcinogenic and toxic oils, irritant and photo-toxic oils, we will look at allergens, oils without formal testing, pregnancy issues and medication interactions. We will address the increasing numbers of cases of sensitization and the effect of diluting essential oils. -
Anti-Eczema Mechanism of Action of Nigella Sativa for Atopic Dermatitis: Computer-Aided Prediction and Pathway Analysis Based on Protein-Chemical Interaction Networks
68 BIOMOLECULAR AND HEALTH SCIENCE JOURNAL 2019 OCTOBER, VOL 02 (02) ORIGINAL ARTICLE Anti-eczema Mechanism of Action of Nigella sativa for Atopic Dermatitis: Computer-aided Prediction and Pathway Analysis Based on Protein-chemical Interaction Networks Meidyta Sinantryana Widyaswari1, Iis Noventi2, Herdiantri Sufriyana3,4* 1Department of Dermatology and Venereology, College of Medicine, University of Nahdlatul Ulama Surabaya, Indonesia 2Department of Medical-Surgical Nursing, College of Nursing and Midwifery, University of Nahdlatul Ulama Surabaya, Indonesia 3Department of Medical Physiology, College of Medicine, University of Nahdlatul Ulama Surabaya, Surabaya, Indonesia 4Graduate Institute of Biomedical Informatics, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan A R T I C L E I N F O A B S T R A C T Article history: Introduction: Black cumin (Nigella sativa) is widely used to treat various diseases. It is also Received 26 August 2019 believed to relief skin conditions accompanied by itching symptom, such as atopic dermatitis Received in revised form 14 (AD) or eczema. However, the anti-eczema mechanism of action is still unclear. The aims of this October 2019 syudy was to identify anti-eczema mechanism of action of N. sativa for AD using computer aided Accepted 21 October 2019 prediction and pathway analysis based on protein-chemical networks. Available online 31 October 2019 Methods: We utilized dataset consisting chemical compounds of N. sativa from KNApSAcK. It is a comprehensive species-metabolite relationship database. Using canonical SMILES strings that Keywords: encode molecular structures of each compound, we predicted the probabilities of activity (Pa) for Nigella sativa, anti-eczema effect based on PASS algorithms. -
Electrophysiological and Behavioral Characterization Of
Deletre et al. Parasites & Vectors (2015) 8:316 DOI 10.1186/s13071-015-0934-y RESEARCH Open Access Electrophysiological and behavioral characterization of bioactive compounds of the Thymus vulgaris, Cymbopogon winterianus, Cuminum cyminum and Cinnamomum zeylanicum essential oils against Anopheles gambiae and prospects for their use as bednet treatments Emilie Deletre1* , Fabrice Chandre2, Livy Williams3, Claire Duménil1, Chantal Menut4 and Thibaud Martin1,5 Abstract Background: Laboratory and field studies showed that repellent, irritant and toxic actions of common public health insecticides reduce human-vector contact and thereby interrupt disease transmission. One of the more effective strategies to reduce disease risk involves the use of long-lasting treated bednets. However, development of insecticide resistance in mosquito populations makes it imperative to find alternatives to these insecticides. Our previous study identified four essential oils as alternatives to pyrethroids: Thymus vulgaris, Cymbopogon winterianus, Cuminum cyminum, Cinnamomum zeylanicum. The objectives of this study were to identify active compounds of these essential oils, to characterize their biological activity, and to examine their potential as a treatment for bednets. Methods: We evaluated the electrophysiological, behavioural (repellency, irritancy) and toxic effects of the major compounds of these oils against Anopheles gambiae strain ‘Kisumu’. Results: Aldehydes elicited the strongest responses and monoterpenes the weakest responses in electroantennogram (EAG) trials. However, EAG responses did not correlate consistently with results of behavioral assays. In behavioral and toxicity studies, several of the single compounds did exhibit repellency, irritancy or toxicity in An. gambiae; however, the activity of essential oils did not always correlate with activity expected from the major components. On the contrary, the biological activity of essential oils appeared complex, suggesting interactions between individual compounds and the insect under study. -
Suspect and Target Screening of Natural Toxins in the Ter River Catchment Area in NE Spain and Prioritisation by Their Toxicity
toxins Article Suspect and Target Screening of Natural Toxins in the Ter River Catchment Area in NE Spain and Prioritisation by Their Toxicity Massimo Picardo 1 , Oscar Núñez 2,3 and Marinella Farré 1,* 1 Department of Environmental Chemistry, IDAEA-CSIC, 08034 Barcelona, Spain; [email protected] 2 Department of Chemical Engineering and Analytical Chemistry, University of Barcelona, 08034 Barcelona, Spain; [email protected] 3 Serra Húnter Professor, Generalitat de Catalunya, 08034 Barcelona, Spain * Correspondence: [email protected] Received: 5 October 2020; Accepted: 26 November 2020; Published: 28 November 2020 Abstract: This study presents the application of a suspect screening approach to screen a wide range of natural toxins, including mycotoxins, bacterial toxins, and plant toxins, in surface waters. The method is based on a generic solid-phase extraction procedure, using three sorbent phases in two cartridges that are connected in series, hence covering a wide range of polarities, followed by liquid chromatography coupled to high-resolution mass spectrometry. The acquisition was performed in the full-scan and data-dependent modes while working under positive and negative ionisation conditions. This method was applied in order to assess the natural toxins in the Ter River water reservoirs, which are used to produce drinking water for Barcelona city (Spain). The study was carried out during a period of seven months, covering the expected prior, during, and post-peak blooming periods of the natural toxins. Fifty-three (53) compounds were tentatively identified, and nine of these were confirmed and quantified. Phytotoxins were identified as the most frequent group of natural toxins in the water, particularly the alkaloids group. -
FEMA GRAS 29 December 2019 SUPPLEMENTARY INFORMATION 1
SUPPLEMENTARY INFORMATION 1: Identity for Natural Flavor Complexes as Evaluated by the Expert Panel The Identification Description as Reviewed by the FEMA FEMA No.1 FEMA Primary Name Expert Panel Rebaudioside M ≥80%; Rebaudioside D 5-20%; Total 4895 Rebaudioside M steviol glycosides ≥95%. Glutamic acid 35-40%; Other amino acids 1-2%; Total Corynebacterium glutamicum corn nitrogen 6-7%; Aliphatic primary alcohols, aldehydes, 4907 syrup fermentation product carboxylic acids, acetals and esters containing additional oxygenated functional groups 1-2%; Minerals 9-11% Inosine 5´-monophosphate 20-25%; Amino acids 7-8%; Corynebacterium stationis corn 4908 Minerals 23-25%; water 28-37%; Other nucleotides 1-2%; syrup fermentation product Total nitrogen 5-8% Supraglucosylated steviol glycosides 70-80%; Rebaudioside Glucosylated steviol glycosides, 4909 A 14-20%; Steviol glycosides not further glucosylated, each 70-80% individually, not to exceed 3%; Maltodextrin 3-10% Supraglucosylated steviol glycosides 30-40%; Rebaudioside Glucosylated steviol glycosides, A 5-8%; Not more than 4% stevioside; All other individual 4910 40% steviol glycosides not further glucosylated <3%; Maltodextrin 45-60% Stevioside 70-80%; Rebaudioside A 13-18%; Steviobioside 1- 3%; Rebaudioside C 2-3%; Total glycosides (including 4911 Stevia extract stevioside, 70% Rebaudioside D, Rebaudioside B, Rebaudioside F, Dulcoside A, and Rubusoside) <3% Derived from hibiscus blossom calyces (Hibiscus sabdariffa L.) , Hibiscus blossom extract is measured as water 30-60%; 4912 Hibiscus -
A Critical Study on Chemistry and Distribution of Phenolic Compounds in Plants, and Their Role in Human Health
IOSR Journal of Environmental Science, Toxicology and Food Technology (IOSR-JESTFT) e-ISSN: 2319-2402,p- ISSN: 2319-2399. Volume. 1 Issue. 3, PP 57-60 www.iosrjournals.org A Critical Study on Chemistry and Distribution of Phenolic Compounds in Plants, and Their Role in Human Health Nisreen Husain1, Sunita Gupta2 1 (Department of Zoology, Govt. Dr. W.W. Patankar Girls’ PG. College, Durg (C.G.) 491001,India) email - [email protected] 2 (Department of Chemistry, Govt. Dr. W.W. Patankar Girls’ PG. College, Durg (C.G.) 491001,India) email - [email protected] Abstract: Phytochemicals are the secondary metabolites synthesized in different parts of the plants. They have the remarkable ability to influence various body processes and functions. So they are taken in the form of food supplements, tonics, dietary plants and medicines. Such natural products of the plants attribute to their therapeutic and medicinal values. Phenolic compounds are the most important group of bioactive constituents of the medicinal plants and human diet. Some of the important ones are simple phenols, phenolic acids, flavonoids and phenyl-propanoids. They act as antioxidants and free radical scavengers, and hence function to decrease oxidative stress and their harmful effects. Thus, phenols help in prevention and control of many dreadful diseases and early ageing. Phenols are also responsible for anti-inflammatory, anti-biotic and anti- septic properties. The unique molecular structure of these phytochemicals, with specific position of hydroxyl groups, owes to their powerful bioactivities. The present work reviews the critical study on the chemistry, distribution and role of some phenolic compounds in promoting health-benefits. -
New Natural Agonists of the Transient Receptor Potential Ankyrin 1 (TRPA1
www.nature.com/scientificreports OPEN New natural agonists of the transient receptor potential Ankyrin 1 (TRPA1) channel Coline Legrand, Jenny Meylan Merlini, Carole de Senarclens‑Bezençon & Stéphanie Michlig* The transient receptor potential (TRP) channels family are cationic channels involved in various physiological processes as pain, infammation, metabolism, swallowing function, gut motility, thermoregulation or adipogenesis. In the oral cavity, TRP channels are involved in chemesthesis, the sensory chemical transduction of spicy ingredients. Among them, TRPA1 is activated by natural molecules producing pungent, tingling or irritating sensations during their consumption. TRPA1 can be activated by diferent chemicals found in plants or spices such as the electrophiles isothiocyanates, thiosulfnates or unsaturated aldehydes. TRPA1 has been as well associated to various physiological mechanisms like gut motility, infammation or pain. Cinnamaldehyde, its well known potent agonist from cinnamon, is reported to impact metabolism and exert anti-obesity and anti-hyperglycemic efects. Recently, a structurally similar molecule to cinnamaldehyde, cuminaldehyde was shown to possess anti-obesity and anti-hyperglycemic efect as well. We hypothesized that both cinnamaldehyde and cuminaldehyde might exert this metabolic efects through TRPA1 activation and evaluated the impact of cuminaldehyde on TRPA1. The results presented here show that cuminaldehyde activates TRPA1 as well. Additionally, a new natural agonist of TRPA1, tiglic aldehyde, was identifed -
Subchapter B—Food for Human Consumption (Continued)
SUBCHAPTER B—FOOD FOR HUMAN CONSUMPTION (CONTINUED) PART 170—FOOD ADDITIVES 170.106 Notification for a food contact sub- stance formulation (NFCSF). Subpart A—General Provisions Subpart E—Generally Recognized as Safe Sec. (GRAS) Notice 170.3 Definitions. 170.203 Definitions. 170.6 Opinion letters on food additive sta- 170.205 Opportunity to submit a GRAS no- tus. tice. 170.10 Food additives in standardized foods. 170.210 How to send your GRAS notice to 170.15 Adoption of regulation on initiative FDA. of Commissioner. 170.215 Incorporation into a GRAS notice. 170.17 Exemption for investigational use 170.220 General requirements applicable to a and procedure for obtaining authoriza- GRAS notice. tion to market edible products from ex- 170.225 Part 1 of a GRAS notice: Signed perimental animals. statements and certification. 170.18 Tolerances for related food additives. 170.230 Part 2 of a GRAS notice: Identity, 170.19 Pesticide chemicals in processed method of manufacture, specifications, foods. and physical or technical effect. Subpart B—Food Additive Safety 170.235 Part 3 of a GRAS notice: Dietary ex- posure. 170.20 General principles for evaluating the 170.240 Part 4 of a GRAS notice: Self-lim- safety of food additives. iting levels of use. 170.22 Safety factors to be considered. 170.245 Part 5 of a GRAS notice: Experience 170.30 Eligibility for classification as gen- based on common use in food before 1958. erally recognized as safe (GRAS). 170.250 Part 6 of a GRAS notice: Narrative. 170.35 Affirmation of generally recognized 170.255 Part 7 of a GRAS notice: List of sup- as safe (GRAS) status. -
Monographs the Scientific Foundation for Herbal Medicinal Products
ONLINE SERIES MONOGRAPHS The Scientific Foundation for Herbal Medicinal Products Carvi aetheroleum Caraway Oil 2019 www.escop.com The Scientific Foundation for Herbal Medicinal Products CARVI AETHEROLEUM Caraway Oil 2019 ESCOP Monographs were first published in loose-leaf form progressively from 1996 to 1999 as Fascicules 1-6, each of 10 monographs © ESCOP 1996, 1997, 1999 Second Edition, completely revised and expanded © ESCOP 2003 Second Edition, Supplement 2009 © ESCOP 2009 ONLINE SERIES ISBN 978-1-901964-65-3 Carvi aetheroleum - Caraway Oil © ESCOP 2019 Published by the European Scientific Cooperative on Phytotherapy (ESCOP) Notaries House, Chapel Street, Exeter EX1 1EZ, United Kingdom www.escop.com All rights reserved Except for the purposes of private study, research, criticism or review no part of this text may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, without the written permission of the publisher. Important Note: Medical knowledge is ever-changing. As new research and clinical experience broaden our knowledge, changes in treatment may be required. In their efforts to provide information on the efficacy and safety of herbal drugs and herbal preparations, presented as a substantial overview together with summaries of relevant data, the authors of the material herein have consulted comprehensive sources believed to be reliable. However, in view of the possibility of human error by the authors or publisher of the work herein, or changes in medical knowledge, neither the authors nor the publisher, nor any other party involved in the preparation of this work, warrants that the information contained herein is in every respect accurate or complete, and they are not responsible for any errors or omissions or for results obtained by the use of such information. -
Anethum Graveolens: an Indian Traditional Medicinal Herb and Spice
P H C O G R E V . PLANT REVIEW Anethum graveolens: An Indian traditional medicinal herb and spice S. Jana, G. S. Shekhawat Department of Bioscience and Biotechnology, Banasthali University, Banasthali, Rajasthan, India Submitted: 22-03-10 Revised: **** Published: **** ABSTRACT Anethum graveolens L. (dill) has been used in ayurvedic medicines since ancient times and it is a popular herb widely used as a spice and also yields essential oil. It is an aromatic and annual herb of apiaceae family. The Ayurvedic uses of dill seeds are carminative, stomachic and diuretic. There are various volatile components of dill seeds and herb; carvone being the predominant odorant of dill seed and α-phellandrene, limonene, dill ether, myristicin are the most important odorants of dill herb. Other compounds isolated from seeds are coumarins, flavonoids, phenolic acids and steroids. The main purpose of this review is to understand the significance ofAnethum graveolens in ayurvedic medicines and non-medicinal purposes and emphasis can also be given to the enhancement of secondary metabolites of this medicinal plant. Key words: Anethum graveolens, ayurvedic uses, carvone, limonene, monoterpenes, review INTRODUCTION Middle Ages it was thought to protect against witchcraft. Greeks covered their heads with dill leaves to induce sleep. The genus name Anethum is derived from Greek word aneeson or aneeton, which means strong smelling. Its common use in BOTANICAL DESCRIPTION Ayurvedic medicine is in abdominal discomfort, colic and for promoting digestion. Ayurvedic properties of shatapushpa are Anethum graveolens L. is the sole species of the genus Anethum, katu tikta rasa, usna virya, katu vipaka, laghu, tiksna and snigdha though classified by some botanists in the related genus Peucedanum gunas. -
Methyl Eugenol: Its Occurrence, Distribution, and Role in Nature, Especially in Relation to Insect Behavior and Pollination
Journal of Insect Science: Vol. 12 | Article 56 Tan and Nishida Methyl eugenol: Its occurrence, distribution, and role in nature, especially in relation to insect behavior and pollination Keng Hong Tan1a* and Ritsuo Nishida2b 1Tan Hak Heng, 20, Jalan Tan Jit Seng, 11200 Penang, Malaysia 2Laboratory of Chemical Ecology, Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan Abstract This review discusses the occurrence and distribution (within a plant) of methyl eugenol in different plant species (> 450) from 80 families spanning many plant orders, as well as various roles this chemical plays in nature, especially in the interactions between tephritid fruit flies and plants. Keywords: allomone, attractant, Bactrocera, chemical ecology, floral fragrance, insect pollinators, plant–insect interactions, plant semiochemicals, sex pheromone, synomone, tephritid fruit flies Abbreviations: ME, methyl eugenol; RK, raspberry ketone Correspondence: a [email protected], b [email protected], *Corresponding author Editor: Todd Shelly was editor of this paper. Received: 28 April 2011, Accepted: 27 August 2011 Copyright : This is an open access paper. We use the Creative Commons Attribution 3.0 license that permits unrestricted use, provided that the paper is properly attributed. ISSN: 1536-2442 | Vol. 12, Number 56 Cite this paper as: Tan KH, Nishida R. 2012. Methyl eugenol: Its occurrence, distribution, and role in nature, especially in relation to insect behavior and pollination. Journal of Insect Science 12:56 available online: insectscience.org/12.56 Journal of Insect Science | www.insectscience.org 1 Journal of Insect Science: Vol. 12 | Article 56 Tan and Nishida 1. Introduction ME has been successfully used in: a) fruit fly surveys (Tan and Lee 1982) and quarantine Plants produce a huge array of chemicals, detection (see reviews by Metcalf and Metcalf numbering tens of thousands, primarily for 1992; Vargas et al.