Combined withering and shaking processes are key steps in the formation of characteristic floral fruity aromas black teas. However, effect sequencing on volatile compounds aroma tea has not been evaluated to date. This study used headspace solid-phase microextraction gas chromatography-tandem mass spectrometry detect teas after withering-shaking shaking-withering processing. Five main different...

The peel components of Mandarin, Sour lemon and Sour orange were analyzed. Peel flavorcomponents were extracted using cold-press method and eluted using n-hexane. All compoundswere analyzed using GC-FID and GC-MS. Twenty-seven, Twenty-four and Twenty-nine peelcomponents were identified in Mandarin, Sour lemon and Sour orange respectively. They includealdehydes, alcohols, esters, monoterpenes an...

ETHNOPHARMACOLOGICAL RELEVANCE Different parts of Ocimum gratissimum Linn are largely used in folk medicine for the treatment of many diseases, some of which related to parasitical infections as fevers and headaches. In order to validate their use and to clarify the plant part which possesses the best antiparasitic properties, we decided to evaluate the in vitro antiplasmodial and antitrypanoso...

Grand fir (Abies grandis) has been developed as a model system for studying defensive oleoresin formation in conifers in response to insect attack or other injury. The turpentine fraction of the oleoresin is a complex mixture of monoterpene (C10) olefins in which (2)limonene and (2)-aand (2)-b-pinene are prominent components; (2)-limonene and (2)-pinene synthase activities are also induced upon...

Abstract Numerous studies have investigated the chemical composition and biological activities of essential oils from different Citrus species fruit peel, leaves flowers. This paper aims to investigate composition, larvicidal antileishmanial oil reticulata peel (CR-EO). CR-EO was obtained by hydrodistillation in a Clevenger-type apparatus its analyzed GC-MS GC-FID. Limonene (85.7%), ɣ-terpinene...

Essential oils have insecticidal activity against several insects and are composed of numerous compounds. This study investigated the effects Thuja occidentalis L. (Cupressaceae) essential oil, terpinyl acetate, bornyl acetate peach aphid [Myzus persicae (Sulzer)]. The effect on three Cupressaceae plants was highest in T. occidentalis. oil extracted by steam distillation, optimum conditions wer...

The intention of this study was to compare the different parts Tunisian Ferula communis via their fatty acids, essential oils and phenolic compounds. Results showed that lipid fraction fruits leaves characterized by predominance oleic acid. Erucic linoleic acids were most abundant in stems while palmitic flowers. F. defined four chemotypes, namely isoshyobunone/6-tert-butyl-4-methylcoumarin ste...

b-biotype bemisia tabaci is a severe insect pest worldwide in many ornamental, agricultural, and horticultural crops. control of this insect is obstructed by resistance to many acetylcholinesterase (ache)-inhibiting insecticides, such as organophosphates and carbamates. in the present work, we evaluated the acetylcholinesterase inhibitory activity of six monoterpenoids namely α-pinene, terpineo...

The study included about 1,500 half-siblings, 4 to 12 years old, of 21 P. ponderosa that were selected primarily on the basis of monoterpene composition. Three of the ecotypic regions (monoterpene races) of P. ponderosa were represented, and results were based on 25 to 200 siblings per parent. Composition of individual trees of a set of half-siblings usually varied greatly in two or more major ...