scholarly journals Effect of the Application Time of Accentuated Cut Edges (ACE) on Marquette Wine Phenolic Compounds

Molecules ◽  
2022 ◽  
Vol 27 (2) ◽  
pp. 542
Author(s):  
Yiliang Cheng ◽  
Jennifer Rae Savits ◽  
Aude Annie Watrelot
Keyword(s):  
Phenolic Compounds ◽  
Condensed Tannins ◽  
High Performance ◽  
Limit Of Detection ◽  
Color Stability ◽  
Wall Material ◽  
Chemical Compositions ◽  
Cold Hardy ◽  
Grape Varieties

Cold-hardy interspecific hybrid grape varieties (Vitis spp.) have distinctive chemical compositions such as high acidity, a high content of anthocyanin diglucoside and a low condensed tannins content, compared to Vitis vinifera varieties. Considering the importance of phenolic compounds on the quality of red wine, a mechanical maceration technique, accentuated cut edges (ACE), has been evaluated when applied directly to crushed grapes (ACE-C), and 24 h before pressing (ACE-P), to improve the extraction of phenolic compounds. Samples were collected at crushing, bottling, and after five months of aging. Phenolic compounds and color characteristics of the wines were analyzed by high-performance liquid chromatography (HPLC) with diode array and fluorescence detectors and UV-Visible spectrophotometry. The color intensity, non-anthocyanin monomeric compounds and total iron-reactive phenolics content increased after applying ACE, compared to the control (CTL) after aging, and was significantly higher (37%) after ACE-C, compared to ACE-P. However, the concentration of condensed tannins was below the limit of detection in all the samples, indicating that ACE did not help their extraction or further interactions occurred with disrupted cell wall material. Applying ACE at crushing was considered as the optimum time to achieve a higher color stability in Marquette red wines.

scholarly journals Study of phenolic compounds in red grapes and wines from Murfatlar wine center

2014 ◽  
Vol 25 (1) ◽  
pp. 47-52
Author(s):  
Victoria Artem ◽  
Elisabeta-Irina Geana ◽  
Arina Oana Antoce
Keyword(s):  
Phenolic Compounds ◽  
High Performance ◽  
Red Wine ◽  
Pinot Noir ◽  
Red Wines ◽  
Phenolic Profile ◽  
Quality Control Parameters ◽  
Red Grape ◽  
Grape Varieties

Abstract The latest research revealed that phenolic compounds play an important role in the quality of red wine, particularly on colour and astringency and also are responsible for the sanogenic or multiple benefic effects on human health after a moderate consumption of wine. This paper presents the ripening evolution of routine quality control parameters (sugars, acids, weight of 100 berries) and phenolic compounds (anthocyanins and polyphenolic index) during 2013 year for the most representative red grape varieties (Cabernet Sauvignon, Merlot, Feteasca Neagra, Pinot Noir and Mamaia) authorized to obtain wines with denomination of origin controlled in Murfatlar wine center. Also, the phenolic profile of obtained red wines was evaluated by reversedphase high performance liquid chromatography. The reported results were useful to find the optimum moment for grape harvest ensuring the production of high quality wines.

scholarly journals RESEARCH OF THE EXTRACTION PROCESS AND STOCK OF PHENOLIC COMPOUNDS OF LOCALIZED WINE-TECHNICAL RED AND WHITE VARIETIES OF GRAPES

2021 ◽  
pp. 74-79
Keyword(s):  
Phenolic Compounds ◽  
Chromatographic Separation ◽  
High Performance ◽  
Total Content ◽  
Climatic Conditions ◽  
Biologically Active ◽  
Individual Identification ◽  
Active Components ◽  
Wine Production ◽  
Grape Varieties

The aim of the study was to determine the technological stock of phenolic compounds in European technical grape varieties grown in the climatic conditions of Uzbekistan, used to produce white and red wines. UV-Vis spectrophotometric method determined the total content of phenolic compounds in localized wine-technical grape varieties. Using high performance liquid chromatography (HPLC), the qualitative and quantitative content of groups and subgroups of phenolic compounds was studied, biologically active components obtained in the process of their extraction were identified, and studies were carried out to analyze the types of phenolic compounds by chromatographic separation in certain wine-technical grape varieties. Chromatographic separation, identification and qualitative analysis of phenolic compounds revealed 2 groups of phenol-carboxylic acids, 9 groups of dihydroxy acids, 7 groups of flavan-3-ol, 12 groups of flavonols and 15 groups of anthocyanins, as well as, 2 tannins. Also revealed the presence of flavonoids, which have such advantages as the individual identification of their polymer products. Studies have shown that local grape varieties have a high degree of phenolic retention. This result opens up tremendous opportunities for future scientific improvement of wine production technology

scholarly journals The Influence of Two-Component Mixtures from Spanish Origanum Oil with Spanish Marjoram Oil or Coriander Oil on Antilisterial Activity and Sensory Quality of a Fresh Cut Vegetable Mixture

Foods ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 1740
Author(s):  
Karolina Kraśniewska ◽  
Olga Kosakowska ◽  
Katarzyna Pobiega ◽  
Małgorzata Gniewosz
Keyword(s):  
Essential Oils ◽  
Sensory Quality ◽  
Limit Of Detection ◽  
Leafy Vegetables ◽  
Major Constituent ◽  
Chemical Compositions ◽  
Two Component ◽  
Origanum Oil ◽  
Minimally Processed Vegetables

The aim of this study was to evaluate two-component mixtures of essential oils (EOs) in sub-inhibitory concentrations for antilisterial protection of minimally processed vegetables. Spanish origanum oil (SOO), Spanish marjoram oil (SMO) and coriander oil (CO) and a mixture of fresh leafy vegetables with red beet were used. The chemical compositions of selected EOs were analyzed by gas chromatography. Carvacrol was the major component of SOO. The dominant active component of SMO was 1,8-cineole, while the major constituent in CO was linalool. The study shows that essential oils in combination, namely SOO + SMO and SOO + CO in a ¼ MIC + ¼ MIC (Minimal Inhibitory Concentration), have a synergistic effect against L. monocytogenes. The reduction of L. monocytogenes in vegetable mixtures treated by EOs in these selected combinations after 24 h of storage was approximately equal to the limit of detection. Furthermore, it was found that the vegetable mixture treated with SOO + SMO had the highest-rated sensorial quality and could therefore meet consumer expectations.

Bioactive Compounds from the Flower Part of Polygonum maritimum L. Collected from Algerian Coast

2020 ◽  
Vol 16 (4) ◽  
pp. 543-545 ◽  
Author(s):  
Imad Abdelhamid El Haci ◽  
Wissame Mazari ◽  
Fawzia Atik-Bekkara ◽  
Fatma Mouttas-Bendimerad ◽  
Fayçal Hassani
Keyword(s):  
Phenolic Compounds ◽  
Bioactive Compounds ◽  
High Performance ◽  
Reversed Phase ◽  
Uv Spectra ◽  
Local Database ◽  
Rp Hplc ◽  
Algerian Coast ◽  
First Time

Background: Polygonum maritimum is one of the spontaneous halophyte plants of the Algerian coast. Many studies were carried out to evaluate the contents and the quality of phenolic compounds of this plant around the Mediterranean region. Objective: This paper intends to identify, for the first time, the phenolic compounds from the flower part of P. maritimum. Methods: RP-HPLC-PDA (Reversed Phase-High Performance Liquid Chromatography-Photo Diode Array) material was used for this purpose. Many standards were used and their retention times were stored in a local database. Identification was made on the basis of retention times of retained compounds and those found in the literature, and UV spectra of each peak. Results: This study intends to identify five phenolic acids (gallic, ferulic, sinapic, caffeic and syringic acids), one flavonol (rutin) and one flavanone (naringenin). Conclusion: P. maritimum is an important source of natural bioactive compounds that can be exploited for the benefit of many fields.

scholarly journals Intensification of Polyphenol Extraction from Olive Leaves Using Ired-Irrad®, an Environmentally-Friendly Innovative Technology

Antioxidants ◽  
2019 ◽  
Vol 8 (7) ◽  
pp. 227 ◽  
Author(s):  
Abi-Khattar ◽  
Rajha ◽  
Abdel-Massih ◽  
Maroun ◽  
Louka ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
High Performance ◽  
Inhibitory Concentration ◽  
Operating Conditions ◽  
Innovative Technology ◽  
Total Phenolic ◽  
Olive Leaves ◽  
Assisted Extraction ◽  
Similar Quantity

Optimization of infrared-assisted extraction was conducted using Response Surface Methodology (RSM) in order to intensify polyphenol recovery from olive leaves. The extraction efficiency using Ired-Irrad®, a newly-patented infrared apparatus (IR), was compared to water bath (WB) conventional extraction. Under optimal conditions, as suggested by the model and confirmed experimentally, the total phenolic content yield was enhanced by more than 30% using IR as contrasted to WB, which even required 27% more ethanol consumption. High Performance Liquid Chromatography analyses quantified the two major phenolic compounds of the leaves: Oleuropein and hydroxytyrosol, which were both intensified by 18% and 21%, respectively. IR extracts increased the antiradical activity by 25% and the antioxidant capacity by 51% compared to WB extracts. On the other hand, extracts of olive leaves obtained by both techniques exhibited equal effects regarding the inhibition of 20 strains of Staphylococcus aureus, with a minimum inhibitory concentration (MIC) varying between 3.125 and 12.5 mg/mL. Similarly, both extracts inhibited Aflatoxin B1 (AFB1) secretion by Aspergillus flavus, with no growth inhibition of the fungus. Finally, optimization using RSM allowed us to suggest other IR operating conditions aiming at significantly reducing the consumption of energy and solvent, while maintaining similar quantity and quality of phenolic compounds as what is optimally obtained using WB.

scholarly journals Polyphenolic Characterization of Grape Skins and Seeds of Four Italian Red Cultivars at Harvest and after Fermentative Maceration

Foods ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 395 ◽  
Author(s):  
Guaita ◽  
Bosso
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Capacity ◽  
Condensed Tannins ◽  
High Performance ◽  
Grape Pomace ◽  
Lower Content ◽  
Monomer Composition ◽  
Polyphenolic Composition ◽  
Grape Skins ◽  
Red Grape

Agro-industry byproducts can still contain large amounts of phenolic compounds, and one of the richest sources are grape skins and seeds as grape pomace, both fermented (red winemaking) and unfermented (white winemaking). The residual polyphenolic content depends on various factors such as grape variety, vintage, and winemaking technique. In this work, four red grape varieties cultivated in northern Italy were studied: Albarossa, Barbera, Nebbiolo, and Uvalino. The work was aimed at studying the polyphenolic composition of skins and seeds from fresh grapes and from the corresponding pomace after fermentative maceration, to assess the actual importance of the varietal differences when processing winemaking byproducts for the extraction of phenolic compounds. The skin and seed extracts were prepared by solvent extraction with a 50% hydroalcoholic solution. The polyphenolic composition of all extracts was determined by spectrophotometry and high-performance liquid chromatography (HPLC); the content and the monomer composition of condensed tannins were determined by phloroglucinolysis; the antioxidant capacity was measured with the ABTS (2,2’-azinobis-(3-ethylbenzothiazoline-6- sulfonate)) method. The antioxidant capacity was higher for the seeds than for the skins, and it was positively correlated with the condensed tannins content. Significant differences in polyphenolic composition of fresh grape skins and seeds were observed between the different cultivars. In particular, Barbera and Albarossa skins were significantly distinguished from Nebbiolo and Uvalino skins for a higher content of anthocyanins and a lower content of vanillin-reactive flavans and condensed tannins; regarding seeds, Barbera and Albarossa had a lower content of vanillin-reactive flavans, proanthocyanidins, and condensed tannins than Nebbiolo and Uvalino. The winemaking process extracted the phenolic compounds to a different extent from skins and seeds, regardless of the cultivar. The differences between cultivars in the polyphenolic profile disappeared after fermentative maceration.

Methodology optimization for the analysis of phenolic compounds in chestnut (Castanea sativa Mill.)

2020 ◽  
Vol 26 (6) ◽  
pp. 520-534 ◽  
Author(s):  
Francisco Fuente-Maqueda ◽  
Ana Rodríguez ◽  
Juan Majada ◽  
Belén Fernández ◽  
Isabel Feito
Keyword(s):  
Phenolic Compounds ◽  
Condensed Tannins ◽  
High Performance ◽  
Castanea Sativa ◽  
Cost Effective ◽  
Liquid Extraction ◽  
Bioactive Substances ◽  
Hydrolyzable Tannins ◽  
Castanea Sativa Mill ◽  
Acid Methanolysis

Phenols are bioactive substances of great interest because of their involvement in plant physiology, their use in many industrial processes, and their impact on human health. This work aims to summarize the varied approaches to the phenolic analysis of chestnut (bark and wood of trunk and branches, leaves, catkins, burs, and fruit) and to collate the optimal conditions into an easy to follow and execute protocol. Phenolic compounds were extracted by solid–liquid extraction and separated by liquid–liquid extraction. Total phenols content was determined by Folin–Ciocalteu assay, condensed tannins by vanillin assay, and hydrolyzable tannins (gallotannins and ellagitannins) by high-performance liquid chromatography quantification of methyl gallate and ellagic acid following acid methanolysis. The lowest temperature for conservation (–80 ℃), lyophilization, and milling (liquid N2) were the most effective pretreatments for samples. For quantification of tannins, the use of water clearly reduced the sensitivity of the analysis of condensed tannins, whilst the more efficient degradation capacity of sulfuric acid improved the methanolysis of hydrolyzable tannins. These findings were validated using a range of chestnut tissues, and thus confirm the utility and effectiveness of this easy to implement, cost-effective, and efficient protocol.

scholarly journals Quick and easy method for determination of priority phenolic compounds in water and wastewater

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Bhupander Kumar ◽  
Virendra Kumar Verma ◽  
Chandra Shekhar Sharma ◽  
Avinash B. Akolkar
Keyword(s):  
Phenolic Compounds ◽  
High Performance ◽  
Limit Of Detection ◽  
Reversed Phase ◽  
Array Detector ◽  
Range Limit ◽  
Environmental Matrices ◽  
Easy Method ◽  
Wastewater Samples

Phenols and phenolic compounds are ubiquitous contaminants in the environment. Due to toxic potential, some phenolic compounds mainly chlorophenols and nitrophenols have been classified as priority pollutants. They enter into the environment through various sources such as industrial, domestic and vehicular emissions. For compliance of national and international regulations, various analytical methods have been developed for assessment in the environmental matrices. This paper presents quick, easy and reliable method for simultaneous determination of eleven priority phenolic compounds in wastewater using reversed-phase high-performance liquid chromatography and diode array detector. Liquid-liquid extraction technique with dichloromethane in acidic condition was used for the extraction, and chromatographic separation of compounds was carried out on a C18 column with water and methanol as the mobile phase. The following parameters like selectivity/ specificity, linearity (<em>R</em><sup>2</sup>), range, limit of detection (LOD) and quantification (LOQ), precision (repeatability) and accuracy (recovery) were validated for consistent and reliable results. Calibration curves for all compounds were linear (<em>R</em><sup>2</sup>, 0.998-0.999) within the concentration range of 5-125 (μg/mL). The LOD and LOQ of the method ranged between 0.11- 0.61 μg/L and 0.37-2.04 μg/L, respectively. This method was applied to quantify phenolic compounds in wastewater samples from urban drain with good separated peaks, precision and accuracy.

scholarly journals Nutritional and Chemical Compositions of The Desert Truffle (Terfezia Claveryi) in Samawa City of Iraq

2021 ◽  
Vol 923 (1) ◽  
pp. 012050
Author(s):  
Duaa Khalid Khlaif ◽  
Hana Kadum ◽  
Noor Sami Abod
Keyword(s):  
Amino Acids ◽  
Phenolic Compounds ◽  
Protein Content ◽  
High Performance ◽  
Crude Protein ◽  
Chemical Compositions ◽  
Phenolic Profile ◽  
Balanced Diet ◽  
Amino Acid Analyzer ◽  
Terfezia Claveryi

Abstract The present study was conducted to investigate the nutritional and phytochemical composition (amino acids, phenolic compounds) of Terfezia claveryi collected from Samawa city. The macro-Kjeldahl technique was used to determine the crude protein content (N6.25) of the samples. A Soxhlet device was used to determine the crude fat content. The identification of free amino acids and individual phenolic compounds were performed by an amino acid analyzer and High-Performance Liquid chromatography (HPLC). Terfezia claveryi rich in carbohydrates, proteins and low in fat. protein percentage was 17.64%. Terfezia claveryi contain twelve amino acids, nine phenolic compounds, Rutin, Gallic acid, Sinapic acids and Chlorogenic acid were 6479.035, 3737.48, 1263.303, 1151.521 μg/gm identified as the major phenolic compound respectively. The protein content is significantly higher than most vegetables, which can use as a well-balanced diet. Owing to rich amino acids and phenolic profile Terfezia claveryi can be considered as a source of therapeutic agents.

Development and Validation of A Reversed Phase-High Performance Liquid Chromatography Method for the Quantitative Estimation of Ramipril Drug Content from Formulated Dosage Form

2016 ◽  
Vol 6 (3) ◽  
Author(s):  
Raju Chandra ◽  
Manisha Pant ◽  
Harchan Singh ◽  
Deepak Kumar ◽  
Ashwani Sanghi
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Active Ingredient ◽  
High Performance ◽  
Limit Of Detection ◽  
Quantitative Estimation ◽  
Reversed Phase ◽  
Uv Detector ◽  
Chromatography Method ◽  
Drug Content

A reliable and reproducible reversed-phase high performance liquid chromatography (RP-HPLC) was developed for the quantitative determination of Remipril drug content from marketed bulk tablets. The active ingredient of Remipril separation achieved with C18 column using the methanol water mobile phase in the ratio of 40:60 (v/v). The active ingredient of the drug content quantify with UV detector at 215 nm. The retention time of Remipril is 5.63 min. A good linearity relation (R2=0.999) was obtained between drug concentration and average peak areas. The limit of detection and limit of quantification of the instrument were calculated 0.03 and 0.09 µg/mL, respectively. The accuracy of the method validation was determined 102.72% by recoveries method.

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