Essential oils from pipilongo seeds (Piper tuberculatum) was extracted using supercritical carbon dioxide. The extraction was performed as a function of particle size of the grinded seeds. The highest yield (2,812%) was obtained with the smallest particle size. The chemical composition analysis of the oil by GC-MS led to identify 15 compounds, some of which are β-elemene, caryophyllene, β-farne...

Background & Aim: Essential oils are isolated from different sections of plants such as flowers, seeds, leaves, stems and roots. Essential oils are applied extensively in producing of perfumes, cosmetics, foods, beverages and confectioneries and as ingredients of disinfectants and insecticides. Experimental: Essential oil are obtained by several isolation methods, such as hydrodistillation (HD...

Bemisia tabaci, the whitefly vector of Tomato yellow leaf curl virus (TYLCV), seriously reduces tomato production and quality. Here, we report the first evidence that infection by TYLCV alters the host preferences of invasive B. tabaci B (Middle East-Minor Asia 1) and Q (Mediterranean genetic group), in which TYLCV-free B. tabaci Q preferred to settle on TYLCV-infected tomato plants over health...

This study investigates the seasonal variation of three species of Leptospermum (Myrtaceae) grown in Brazil. The chemical composition of the volatile oils of L. flavescens and L. petersonii did not show any significant seasonal variation in the major components, while for Leptospermum madidum subsp. sativum the levels of major constituents of the volatile oils varied with the harvest season. Ma...

The number of endangered plant species in the U.S. is significant, yet studies aimed towards utilizing these plants are limited. Ticks and mosquitoes are vectors of significant pathogenic diseases of humans. Repellents are critical means of personal protection against biting arthropods and disease transmission. The essential oil and solvent extracts from Lindera melissifolia (Walt.) Blume (Laur...

The aim of this study was to identify the chemical composition Piper arboreumAubl. essential oil (EO), and evaluate its inhibitory activity in vitroagainst enzymes butyrylcholinesterase (BuChE) acetylcholinesterase (AChE). EO obtained by steam distillation leaves, which were collected Pindal canton Loja province southern Ecuador. analyzed using gas chromatography technique coupled a mass spectr...

Essential oils from plants used in traditional medicine are known as a rich source of chemically diverse compounds with specific biological activities. Achillea millefolium essential oil (AEO) was screened for vitro activity against Babesia canis. The AEO obtained by hydrodistillation and analysed gas chromatography coupled to mass spectrometry (GC-MS). GC-MS revealed the presence 47 oil. Those...

Nineteen host plant volatiles (HPVs) were screened for attractivity to adult codling moth Cydia pomonella (L.) as a fourth component of core blends (3K) including (E,Z)-2,4-ethyl decadienoate, (E)-4,8-dimethyl-1,3,7-nonatriene and acetic acid. Each new quaternary combination was compared with previously reported attractive bisexual lure (4K), consisting the 3K blend plus 6-ethenyl-2,2,6-trimeth...

The present study was carried out to determine variations in flower and dye yield chemical contents of safflower genotypes with different colors 2017–2018. dyestuff yields the genotype ranged between 6.6–12.0 kg da−1 218.1–421.7 g da−1, respectively. TPC high antioxidant capacity values were listed according color as yellow > orange red white. Gallic, rosmarinic chlorogenic acid higher orang...

The objective of the present study was to characterize essential oil Myrciaria tenella (MTEO) leaves, determine effects distillation time (1 5 h), and evaluate its action on acute pain inflammation both in vivo vitro. MTEO obtained by hydrodistillation for 4 h 36 compounds were detected, mainly consisting hydrocarbon terpenes such as β-pinene (21.46%), α-pinene (19.43%), E-caryophyllene (10.89%...