The subject of this study is to determine chemical composition, antioxidant and antimicrobial activity essential oil obtained from chamomile flowers (Matricaria chamomilla L.). has been by hydrodistillation process on semi industrial production conditions. Qualitative quantitative composition the was determined GC-MS GC-FID analysis. antioxidative investigated in terms their possible application as natural antioxidants agents. results proved presence 52 components, wherein highest content...

Lemon balm, mint, and basil were used to determine whether light modification (plants grown under pearl shade nets with 40 % shaded index or in un-shaded open field) could improve the quantity quality of essential oils (EOs) antioxidant activity. The yield EOs lemon mint sweet obtained after 120 min hydrodistillation was 0.18, 2.00, 1.12 mL/100 g, respectively. At same time shading conditions plants more levels (0.22, 2.23, 1.32 g). main components balm oil are geranial (6.84–7.78 %); neral...

This study determined the content and composition of dill seed (Anethum graveolens L.) essential oil under varying light conditions: non-shaded plants in open fields covered with pearl shade nets (40% index). Essential was extracted using Clevenger hydrodistillation. The 4.63% for 4.81% shaded plants. GC/MS analysis revealed twenty-one twenty-two components from plants, respectively. terpenic fraction consisted mainly oxygen-containing monoterpene derivatives (53.6%), carvone (46.1%) as...

Essential oils, as sources of natural products, represent an alternative to synthetic antioxidants and antimicrobial agents in food pharmaceutical industry, medicine therapy. Basil (Ocimum basilicum L.) belongs the Lamiaceae family herbs, which addition being used a spice, is also medicinally known powerful antibacterial, antimutagenic chemopreventive agent. The aim present study was determine chemical composition, antioxidant activity essential oil obtained from basil aerial parts (grown...

In the present work, essential oil has been obtained by Clevenger-type hydrodestillation from grounded curcuma rhizome (Rhizoma Curcumae) (Turkey) with hydromodulus 1:5 m/V during 180 minutes. The qualitative and quantitative composition of was determined GC-MS GC-FID spectrometry. antioxidant activity using DPPH assay just after adding radical 20 min, 30 min 45 incubation radical. antimicrobial a discdiffusion method. yield 0.3 cm3/ 100 g plant material. Eight compounds were identified....

Thymus vulgaris L. (thyme), Origanum majorana (marjoram), and vulgare (oregano) were used to determine whether light modification (plants grown under nets with 40% shaded index or in un-shaded open field) could improve the quantity quality of essential oils (EOs) antioxidant activity. The yield EOs thyme, marjoram, oregano obtained after 120 min hydrodistillation was 2.32, 1.51, 0.27 mL/100 g plant material, respectively. At same time shading conditions plants synthetized more (2.57, 1.68,...

The present study focuses on the yield, chemical composition, and antioxidant activity of essential oils from different parts (flowers or leaves/stems) cultivated plants grown under pearl shade nets with a 40% shaded index in nonshaded wild-grown oregano. composition isolated was determined by GC/MS GC/FID. Antioxidant using DPPH assay. highest yield oregano (OEOs) obtained (flowers) at 0.35 mL/100 g p.m., contrast to (flowers), where OEOs low (0.21 p.m.). Qualitative quantitative analyses...

Thyme, mint, and lemon balm were used to determine whether shading conditions could improve the yield, composition, antioxidant, antimicrobial activity in plant essential oils (EOs) comparison with non-shaded plants from an open field. The yield of EOs thyme, balm, was 3.44, 3.96, 0.21 mL/100 g, respectively. Plants covered by nets produced different levels (3.46, 2.20, 0.45 g) after 120 min hydrodistillation. main components thyme oil are thymol (44.2–43.9%), γ-terpinene (18.3–16.8%),...

ABSTRACT Since ancient times numerous, aromatic and medicinal herbs have been commonly used for the production of various herbal beverages. The effect yellow gentian ( Gentiana lutea ) saline wormwood Artemisia santonicum on qualitative quantitative composition volatile compounds sensory properties Serbian traditional plum brandy (“slivovitz”) was investigated. Simultaneously, similar commercial alcoholic beverages obtained from local market researched comparison. Eighty‐nine were detected...

Fennel fruit (Foeniculim vulgare Mill.) essential oil (FFEO) was isolated from disintegrated plant material by intensified microwave-assisted hydrodistillation approach (MWHD). Isolated FFEO, rich in trans-anethole and low estragol, obtained 30% higher yield after only 10 min compared to FFEOs via traditional (HD). Besides significant differences the chemical composition, MWHD-obtained FFEO demonstrated superior antibacterial activity, while its anticandidal activity remained unchanged...

Abstract The endoperoxides of β-carotene (βCar-EPOs) are regarded as main products the chemical deactivation 1 O 2 by β-carotene, one most important antioxidants, following a concerted singlet-singlet reaction. Here we challenge this view showing that βCar-EPOs formed in absence non-concerted triplet-triplet reaction: 3 + → βCar-EPOs, which manifests strong biradical character. Thus, reactivity towards oxygen is governed its excited triplet state. while being stable dark, photochemically...

The study was conducted to determine fennel essential oil (FEO) yield, composition, and antioxidant activity during four different maturation stages of umbels with seeds (1st stage: immature-pasty; 2nd premature-waxy; 3rd mature-fully ripe; 4th only), leaves wild (Foeniculum vulgare Mill. subsp. vulgare) from the Montenegro coast. maximum yield found in premature at waxy stage (4.76 mL/100 g p.m.) fully ripe early fruiting (5.16 p.m.). Fully contained lowest FEO (mL/100 minimum content...

Irreversible degradation of quercetin and rutin, dissolved in methanol water, induced by continuous UV-irradiation from two different sub-ranges (UV-B UV-C) has been studied this work. The both flavonoids is related to formation UV-induced products: processes follow first-order kinetics. products rate constants are dependent on the involved UV-photons energy input solvents.

Abstract BACKGROUND The need to increase marketable tomato yields and decrease losses due sunburn disease during the summer motivates farmers adopt additional cultural practices such as shading grafting. To investigate complex interactions among grafting, shading, cultivar, grafted ungrafted tomatoes (cv. 'Optima' F 1 cv. 'Big Beef' ) were grown in soil under net‐house cover, using pearl red nets, unshaded conditions (open fields). Tomato fruit at stage of maturity used for analysis quality...

The aim of this work was to compare the chemical composition and antioxidant activity essential oils from two plant parts (leaves stems) fennel, wild-grown in Montenegro seaside. isolated determined by gas chromatography with mass spectrometry (GC/MS) flame ionization detection (GC/FID). yield fennel (FEOs) leaves (0.83%) four times higher than that stems (0.21%). Forty-six compounds were identified leaves’ FEOs mainly aromatic (68.5%), monoterpenes (17.8%), others, where most abundant...

Chemical profiling the sage essential oils (SEOs) from wild and cultivated (shaded or non-shaded) plants has been investigated. The yield of SEOs (3.51 mL/100 g) was higher than that plants(shaded plants: 3.20 g non-shaded 2.56 g).The main components SEO were cis-thujone (43.2%), camphor (17.6%), 1,8-cineole (13.8%), veridiflorol (3.8%) borneol (3.4%).The chemical composition included > 1,8-cineole. Net shading lowered content toxic in (23.5%) is therefore recommended order to achieve...

Black (Piper nigrum L.) and cubeb pepper cubeba fruits from the Serbian market were chosen as unprocessed materials for obtaining market-valuable essential oils. Since are only imported in Serbia, inadequate transportation storage conditions may lead to their spoilage, negatively affecting quality feedstocks. To ensure highest of oils, refrigerated upon purchase, mechanically disintegrated at colder subjected hydrodistillation. (BPEO) oil (CPEO) contained 34 42 compounds, respectively. CPEO...

AbstractThe aim of this study was to examine the effect hydrodistillation time on chemical composition and antioxidant activity collected essential oils' (EOs') fractions from black pepper fructus for five periods: I (0-15 min), II (15-30 III (30-60 IV(60-90 min) V (90-120 min). In way, an oil with desired can be selected. The obtained by Clevenger-type (CHD). qualitative quantitative EOs' determined GC-MS GC-FID analysis. efficiency scavenge DPPH radicals evaluated spectrophotometrically....