There is no systematic report about propolis chemical biodiversity from the Adriatic Sea islands affecting its antioxidant capacity. Therefore, samples Krk, Rab, Pag, Biševo and Korčula were collected. Comprehensive methods used to unlock their biodiversity: headspace solid-phase microextraction (HS-SPME) hydrodistillation (HD) followed by gas chromatography mass spectrometry (GC-MS); Fourier transform mid-infrared spectroscopy (FT-MIR); ultra high performance liquid with diode array...

Chemical characterization of bee pollen is great importance for its quality estimation. Multifloral and unifloral samples collected from continental, mountain Adriatic regions Croatia were analyzed by means physico-chemical, chromatographic (GC-MS), spectroscopic (FTIR-ATR) analytical tools, aiming to conduct a comprehensive pollen. The most distinctive with regard nutritional value was Aesculus hippocastanum (27.26% proteins), Quercus spp. (52.58% total sugars), Taraxacumofficinale (19.04%...

Performed phytochemical study contributes to the knowledge of volatile organic compounds (VOCs) Halopteris filicina (Grateloup) Kützing, Dictyota dichotoma (Hudson) J. V. Lamouroux, Posidonia oceanica (L.) Delile and Flabellia petiolata (Turra) Nizamuddin from Adriatic Sea (single point collection). VOCs were investigated by headspace solid-phase microextraction (HS-SPME) analysed gas chromatography mass spectrometry (GC-MS/FID). H. contained dimethyl sulfide (DMS; 12.8%), C8-compounds (e.g....

Two samples of oak honeydew honey were investigated. Headspace solid-phase microextraction (HS-SPME) combined with GC and GC/MS enabled identification the most volatile organic headspace compounds being dominated by terpenes(mainly cis- trans-linalool oxides). The less-volatile composition was obtained ultrasonic assisted extraction (USE) two solvents (1:2 (v/v) pentane -diethyl ether mixture dichloromethane) followed analysis. Shikimic pathway derivatives are particular interest respect to...

Species that belong to the genus Allium have been widely used for human food and traditional medicine. Their beneficial health effects, as well specific aroma, are associated with their bioactive chemical compounds, such sulfur compounds flavonoids. Gas chromatography mass spectrometry (GC-MS) reverse-phase high-performance liquid (reverse-phase HPLC) were identify organosulfur amino acid content of triploid hybrid onion, cornutum Clement ex Visiani, 1842, common cepa L. extracts tested...

Essential oils from Mediterranean wild plants are widely used, but the hydrodistillation residues produced in parallel with these essential significantly understudied and underexploited. Since there only fragmentary data literature, we have, for first time, systematically analyzed chemical composition of by-products obtained after sage, bay laurel, rosemary leaves, i.e., hydrolates, water residues, solid residues. The hydrolates changed compared to their respective towards dominance more...

Volatile compounds of unifloral Salvia officinalis L. honey has been investigated for the first time. The botanical origin ten samples ascertained by pollen analysis (the displayed 23–60% pollen). Fifty-four volatile were identified GC and GC/MS in extracts obtained ultrasound-assisted extraction (USE) with pentane/Et2O 1 : 2. yield isolated volatiles varied from 25.7 to 30.5 mg kg−1. could be distinguished on basis high percentage benzoic acid (6.4–14.8%), especially phenylacetic...

Volatile organic compounds of Amorpha fruticosa honey samples were isolated by headspace solid-phase microextraction (HS-SPME) and ultrasonic solvent extraction (USE), followed gas chromatography mass spectrometry analyses (GC, GC-MS), in order to obtain complementary data for overall characterization the aroma. The was dominated 2-phenylethanol (38.3-58.4%), while other major trans- cis-linalool oxides, benzaldehyde benzyl alcohol. 2-Phenylethanol (10.5-16.8%) methyl syringate (5.8-8.2%)...

An ancient organic residue was collected from the bottom of a Greco-Italian amphora found in Adriatic Sea and investigated by direct GC GC-MS analysis. The headspace composition determined HS-SPME using: (1) DVB/CAR/PDMS (2) PDMS/DVB fibres. Higher percentages benzene derivatives, monoterpenes other low-molecular aliphatic compounds were obtained method contrast to higher percentage naphthalene phenanthrene derivatives (2). In comparison with pine resin, it is more likely that alcohols,...

Headspace solid-phase microextraction (HS-SPME; PDMS/DVB fibre) and ultrasonic solvent extraction (USE; A: pentane diethyl ether (1:2 v/v), B: dichloromethane) followed by gas chromatography mass spectrometry (GC, GC-MS) were used for the analysis of Prunus mahaleb L. honey samples. Screening was focused toward chemical composition natural organic volatiles to determine if it is useful as a method determining honey-sourcing. A total 34 compounds identified in headspace 49 extracts that...

The GC and GC/MS analyses of the solvent organic extractive from stomach bees, having collected Mentha spp. nectar, revealed presence methyl syringate (6.6%), terpendiol I (5.0%) vomifoliol (3.0%) that can be attributed to plant origin. Other major compounds bee-stomach were related composition cuticular waxes less pheromones. Organic extractives honey obtained by solvent-free headspace solid-phase microextraction (HS-SPME) ultrasonic extraction (USE) analyzed GC/MS. hotrienol (31.1%-38.5%),...

Virgin olive oils (VOOs) obtained from the fruits of Croatian autochthonous varieties Mašnjača and Krvavica were extensively characterized for first time. Investigated compared with oil Italian variety Leccino, grown processed under same conditions. Headspace volatile profile, tocopherols, chlorophylls, carotenoids total phenolic content, peroxide value, % acidity, K232, K270 as well antioxidant activity (DPPH) oils’ hydrophilic fractions (HFs) including their composition assessed by means...

The use of deficit irrigation techniques on olive orchards is the main trend aiming to optimize water savings while improving functional and sensory characteristics oils from trees under techniques. brand hydroSOStainable has been defined for crops produced restriction conditions. HydroSOStainable obtained two new regulated one sustained treatments in “Arbequina” were evaluated by analyzing quality parameters, antioxidant activity, total phenol content, fatty acid profile, volatile...

Eight propolis samples from Croatia were analyzed in detail, to study the headspace, volatiles, anti-Varroa-treatment residue, phenolics, and antioxidant properties. The exhibited high qualitative/quantitative variability of chemical profiles, total phenolic content (1,589.3-14,398.3 mg GAE (gallic acid equivalent)/l EtOH extract), activity (11.1-133.5 mmol Fe(2+) /l extract 6.2-65.3 TEAC (Trolox® equivalent capacity)/l extract). main phenolics quantified by HPLC-DAD at 280 360 nm vanillin,...

Two selected brown algae (

Rosemary (Rosmarinus officinalis L.) is a Mediterranean medicinal and aromatic plant widely used due to valuable bioactive compounds (BACs) aromas. The aim of the study was evaluate extraction intracellular from rosemary combining experimental procedure by means high voltage electrical discharge (HVED), with theoretical approach using two computational simulation methods: conductor-like screening model for real solvents Hansen solubility parameters. optimal HVED parameters were as follows:...

The effect of different hydrodistillation pretreatments, namely, reflux extraction, extraction with the addition cell wall-degrading enzymes, and ultrasound, on yield chemical composition essential oils sage, bay laurel, rosemary was examined. All pretreatments improved oil compared to no-pretreatment control (40–64% increase), while quality remained mostly unchanged (as shown by statistical analysis GC-MS results). However, enzyme-assisted pretreatment did not significantly outperform...

Honeydew honey (HH) is a distinctive type of known for its dark colour, high mineral and polyphenol content, pronounced biological activity. This study continues previous research on beech chestnut honeydew honeys by presenting comprehensive analysis linden (LHH) from Bosnia Herzegovina—a variety that, until now, has not been characterised in detail. Physicochemical parameters confirmed classification as HH, with electrical conductivity (1.21 mS/cm) low moisture (15.1%). GC-MS revealed...

Abstract This research is focused on the immediate contribution of bees and combs to honey volatiles in order exclude these compounds as botanical‐origin biomarkers for authentification. Therefore, were closed a hive containing empty under controlled food‐flow conditions (saccharose solution). The obtained ‘saccharose honey’ probe samples subjected ultrasonic solvent extraction (USE), followed by gas chromatography mass spectrometry analyses (GC GC/MS). A total 66 identified. Higher alcohols...