Both geraniol and the products of its transformation, thanks to their beneficial properties, find a variety applications in cosmetics. Due antioxidant moisturizing these compounds can be added skin care such as face creams, lotions, oils, masks. In addition, show some antibacterial antifungal making them suitable for application help fight against bacteria or fungi. This study determined antimicrobial activity which were formed during transformation relation selected Gram-positive bacteria,...

α-Pinene is a very valuable natural raw material for organic syntheses, which of increasing interest to scientists due its renewability and relatively low price. This work presents the studies on oxidation α-pinene in presence two mesoporous titanium-silicate catalysts: standard Ti-SBA-15 material, was obtained by new green way using orange peel waste as bio-templates (Ti-SBA-15_orange peels). For synthesis catalysts, following materials were used: Pluronic P123 template (template usually...

Limonene belongs to a group of very important intermediates used in the production fine chemicals. This monoterpene compound can be obtained from peels oranges or lemon which are (biomass) waste orange juice industry. Thus, limonene is renewable, easy available and relatively cheap compound. work presents preliminary studies on process epoxidation over zeolite type catalysts such as: TS-1 Ti-SBA-15. In these methanol was as solvent an oxidizing agent 60 wt % hydrogen peroxide solution...

The isomerization of α-pinene – a renewable bioresource was investigated as relatively simple method for the syntheses camphene and limonene, industrially important products. catalytic activity H2SO4-modified clinoptilolite evaluated without any solvent results show its applicability novel, green, reusable promising catalyst in organic syntheses. is cost-effective energy efficient because use low temperatures: at 30 °C after 1 h, conversion equal to 18%. In addition, this process has...

10-Methyl-9-(phenoxycarbonyl)acridinium trifluoromethanesulfonates bearing alkyl substituents at the benzene ring were synthesized, purified, and identified. In reaction with OOH(-) in basic aqueous media, cations of compounds investigated converted to electronically excited 10-methyl-9-acridinone, whose relaxation was accompanied by chemiluminescence (CL). The kinetic constants CL decay, relative efficiencies light emission, quantum yields, resistance toward alkaline hydrolysis determined...

In this work, ionic liquids (ILs) are proposed as candidates for extractive removal of 2-phenylethanol (PEA) (well-known rose-like aroma compound) from its aqueous solutions. Four ILs based on different cations, namely, 1-hexyl-1-methylpyrrolidinium, 1-hexyl-1,4-diaza [2.2.2]bicyclooctanium, 1-(2-methoxyethyl)-3-methylimidazolium, and 1-(2-methoxyethyl)-1-methylpyrrolidinium, bis(trifluoromethylsulfonyl)imide anion were under study. Thermodynamic data at ambient pressure presented pure...

Eugenol (EU) and isoeugenol (IZO-EU) are naturally occurring compounds known for their strong antibacterial properties, which makes them ideal candidates application as preservatives in cosmetic products. Primarily derived from clove oil, EU demonstrates potent effects against a wide range of microorganisms, including Gram-positive Gram-negative bacteria, well yeast-like fungi such Candida albicans. Their action is mainly connected with ability to disrupt microbial cell membranes inhibit key...

Avocado is a rich source of numerous nutrients, such as micro- and macroelements, essential unsaturated fatty acids, vitamins for the correct functioning body. Consequently, its consumption has significantly increased in recent years. The primary edible part fruit flesh, while seed still considered biowaste. Currently, various methods utilization this biowaste are being explored, prompting authors work to investigate catalytic properties ground avocado seeds. Dried, seeds were used catalyst...

Titanium-containing mesoporous silica catalysts with different Ti contents were prepared by the sol–gel method, whereby molar ratios of silicon to titanium in crystallization gel amounted to, respectively, 40:1, 30:1, 20:1 and 10:1. The produced Ti-MCM-41 materials characterized following instrumental methods: XRD, UV-Vis, FT-IR, SEM, XRF. Textural parameters also determined for these means N2 adsorption/desorption method. activities investigated α-pinene isomerization process. most active...

The effect of the extraction conditions on DPPH radical scavenging activity and isolation bioactive compounds from maca (Lepidium meyenii) root was investigated. Different techniques (maceration, maceration with shaking, ultrasound-assisted extraction, reflux extraction) were compared. Moreover, time two various solvents (water ethanol) studied. antioxidant extracts determined by spectrophotometric method radical, while total phenolic content (TPC) analyzed Folin–Ciocalteu method. Using gas...

Abstract In the current study, isomerization of geraniol over a natural sepiolite as catalyst was investigated and optimized. Prior to application in process, physical chemical properties were characterized using battery instrumental techniques, including XRD, nitrogen adsorption at 77 K, SEM, EDXRF, UV–Vis FT-IR. Results indicated that is very complicated due large number reactions taking place. The catalytic studies showed main reaction products β-pinene, ocimenes, linalool, nerol,...

This work presents studies on the preparation of porous carbon materials from waste biomass in form orange peels, coffee grounds, and sunflower seed husks. The activated carbons these three involved activation with KOH followed by carbonization at 800 °C an N2 atmosphere. way obtaining is very simple requires application only two reactants. Thus, this method cheap, it does not generate much chemical waste. obtained were characterized XRD, SEM, XPS, XRF methods. Moreover, textural properties,...

Ti-SBA-15, one of the latest titanium silicalite catalysts, has been prepared according to literature by direct hydrothermal synthesis using Pluronic 123 as structure-directing agent. The characterization catalyst was performed means following methods: XRD, IR, UV–Vis, X-ray microanalysis and SEM. catalytic properties Ti-SBA-15 have tested in epoxidation allyl alcohol, methallyl crotyl alcohol 1-butene-3-ol with hydrogen peroxide. process described main functions: selectivity epoxide...

Abstract The synthesis of Ti-MCM-41 catalyst was performed. obtained characterized by the following instrumental methods: UV-vis, IR spectroscopy, XRD, and X-ray microanalysis. activity tested in process allyl alcohol epoxidation with 30 wt.% hydrogen peroxide methanol as a solvent under atmospheric pressure. In next stage, recovery from post-reaction mixture its regeneration washing appropriate solvents drying were conducted. case total loss catalyst, calcination also carried out. titanium...

Abstracts The deactivation and regeneration of the Ti-SBA-15 catalyst used in process allyl alcohol epoxidation with 30 wt% hydrogen peroxide was studied. For characteristic following instrumental methods were applied: XRD, IR, UV-VIS, SEM X-ray microanalysis. investigated V cycles (29 stages) process. method (partially active or inactive) proposed: after each reaction, washed on filter deionized water methanol, next it dried an oven (100ºC, 6 h) again processes. When completely inactive...