scholarly journals Identification and Quantification of Total Polyphenols in Plants with Bioactive Potentially

2016 ◽  
Vol 4 ◽  
pp. 47-51
Author(s):  
Daniela Sandru ◽  
Violeta Niculescu ◽  
Ecaterina Lengyel ◽  
Ovidiu Tița
Keyword(s):  
Specific Work ◽  
Melissa Officinalis ◽  
Origanum Vulgare ◽  
Artemisia Absinthium ◽  
Foeniculum Vulgare ◽  
Total Polyphenols ◽  
Lemon Balm ◽  
Wide Range ◽  
Teucrium Chamaedrys ◽  
Centaurium Erythraea

This meaning of this specific work is to identify and quantify the polyphenolic compounds that exist in plants with bioactive potentially. The study was monitorising 16 different plants: bilberry (Vaccinium myrtillus), artichoke (Cynara scolymus), chicory (Cichorium intybus), dumb (Teucrium chamaedrys), fennel (Foeniculum vulgare), thorn (Xanthium spinosum), juniper (Juniperus communis), mint (Mentha), cranberry (Vaccinium vitis-idaea), hawthorn (Crataegus monogyna), wormwood (Artemisia absinthium), willow herb (Epilobium), lemon balm (Melissa officinalis), St. John's wort (Hypericum perforatum), oregano (Origanum vulgare), centaury (Centaurium erythraea). The total polyphenolic compound was determined onspectrophotometricmethod,Folin-Ciocalteu. The polyphenols have a very wide range value starting on low amounts on centaury (Centaurium erythraea) 271.613 mg/L and reaching highest values of 5975.616 mg/L in wormwood (Artemisia absinthium). The results can be use in the design of digestive drinks in the food industry due to higher concentration of total polyphenols in the studied plants.

scholarly journals Comparison of antioxidative activity data for aqueous extracts of lemon balm (Melissa officinalis L.), oregano (Origanum vulgare L.), thyme (Thymus vulgaris L.), and agrimony (Agrimonia eupatoria L.) obtained by conventional methods and the DNA-based biosensor

2011 ◽  
Vol 21 (No. 2) ◽  
pp. 78-84 ◽  
Author(s):  
Ľ. Heilerová ◽  
M. Bučková ◽  
P. Tarapčík ◽  
S. Šilhár ◽  
J. Labuda
Keyword(s):  
Oxidative Dna Damage ◽  
Thymus Vulgaris ◽  
Melissa Officinalis ◽  
Origanum Vulgare ◽  
Total Polyphenols ◽  
Activity Data ◽  
Lemon Balm ◽  
Chemically Modified ◽  
Calf Thymus ◽  
Radical Method

The antioxidative properties of aqueous plant extracts were evaluated using common methods such as the Rancimat and 2,2’-diphenyl-1-picrylhydrazyl (DPPH) free radical method. Moreover, a voltammetric procedure based on the protective effect of antioxidants against the oxidative DNA damage was employed using a disposable DNA biosensor fabricated as a screen-printed electrode chemically modified by calf thymus double stranded (ds) DNA. The total polyphenols were also determined spectrophotometrically with the Folin-Ciocalteu agent. The extracts of oregano and lemon balm exhibited significantly higher activity than those of thyme and agrimony. The results were treated statistically and their operational character is discussed.  

scholarly journals The Inhibition of Non-albicans Candida Species and Uncommon Yeast Pathogens by Selected Essential Oils and Their Major Compounds

Molecules ◽  
2021 ◽  
Vol 26 (16) ◽  
pp. 4937
Author(s):  
Narcisa Mandras ◽  
Janira Roana ◽  
Daniela Scalas ◽  
Simonetta Del Re ◽  
Lorenza Cavallo ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Essential Oils ◽  
Candida Species ◽  
Fungal Infections ◽  
Biological Activities ◽  
Antifungal Drugs ◽  
Thymus Vulgaris ◽  
Foeniculum Vulgare ◽  
Lemon Balm ◽  
Wide Range

The epidemiology of yeast infections and resistance to available antifungal drugs are rapidly increasing, and non-albicans Candida species and rare yeast species are increasingly emerging as major opportunistic pathogens. In order to identify new strategies to counter the threat of antimicrobial resistant microorganisms, essential oils (EOs) have become an important potential in the treatment of fungal infections. EOs and their bioactive pure compounds have been found to exhibit a wide range of remarkable biological activities. We investigated the in vitro antifungal activity of nine commercial EOs such as Thymus vulgaris (thyme red), Origanum vulgare (oregano), Lavandula vera (lavender), Pinus sylvestris (pine), Foeniculum vulgare (fennel), Melissa officinalis (lemon balm), Salvia officinalis (sage), Eugenia caryophyllata (clove) and Pelargonium asperum (geranium), and some of their main components (α-pinene, carvacrol, citronellal, eugenol, γ-terpinene, linalool, linalylacetate, terpinen-4-ol, thymol) against non-albicans Candida strains and uncommon yeasts. The EOs were analyzed by GC-MS, and their antifungal properties were evaluated by minimum inhibitory concentration and minimum fungicidal concentration parameters, in accordance with CLSI guidelines, with some modifications for EOs. Pine exhibited strong antifungal activity against the selected non-albicans Candida isolates and uncommon yeasts. In addition, lemon balm EOs and α-pinene exhibited strong antifungal activity against the selected non-albicans Candida yeasts. Thymol inhibited the growth of all uncommon yeasts. These data showed a promising potential application of EOs as natural adjuvant for management of infections by emerging non-albicans Candida species and uncommon pathogenic yeasts.

scholarly journals Propagation of Selected Culinary and Ornamental Herbs

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 633e-634
Author(s):  
J.R. Schroeder ◽  
Alice Le Duc
Keyword(s):  
Melissa Officinalis ◽  
Origanum Vulgare ◽  
Lemon Balm ◽  
Significant Difference ◽  
Artemisia Abrotanum ◽  
Hyssopus Officinalis

Ten culinary and ornamental herbs were evaluated for time and quality of rooting of tip cuttings. The taxa included in the study were oregano (Origanum vulgare), lemon thyme (Thymus ×citriodorata), applemint (Mentha suavolens), Persian catnip (Nepeta ×faassenii), lemon balm (Melissa officinalis), southernwood (Artemisia abrotanum), caraway thyme (Thymus herba-barona), hyssop (Hyssopus officinalis), `Blue Wonder' catnip (Nepeta `Blue Wonder'), pineapplemint (Mentha suavolens var. variegata). Four replicates of each species were used. The cuttings, untreated and rooting hormone treated, were placed under intermittent mist, then cuttings potted when a 1- to 1.5-inch root ball had developed. Most of the stock suffered from some chlorosis during rooting; southernwood cuttings particularly displayed severe chlorosis which was overcome with 2 weeks of constant-feed fertilizer after potting. Oregano displayed the best results, rooting in seven days with or without treatment. It produced a sellable 4-inch pot in 31 days from sticking the cuttings. Lemon thyme, applemint, Persian catnip, and lemon balm all rooted in 14 days if treated. No difference was observed in days to rooting between treated and untreated lemon thyme. Untreated cuttings of lemon balm, applemint, and Persian catnip rooted in 25 to 30 days. Treated applemint cuttings not only rooted more quickly but produced a marketable 4-inch pot in significantly less time. Southernwood and caraway thyme rooted in 25 days, with no significant difference between treated and untreated cuttings. Hyssop, pineapplemint, and `Blue Wonder' catnip took about 30 days, also with no significant difference between treated and untreated cuttings.

scholarly journals Preliminary evaluation of vegetal extract characteristics from spontaneous flora of Moldova area (Romania)

2021 ◽  
Vol 26 (3) ◽  
pp. 2594-2605
Author(s):  
GABRIEL MIHAITA DARABAN ◽  
◽  
CARMEN ZAHARIA ◽  
DANIELA SUTEU ◽  
ADRIAN PUITEL ◽  
...  
Keyword(s):  
Plant Extracts ◽  
Achillea Millefolium ◽  
Preliminary Evaluation ◽  
Origanum Vulgare ◽  
Storage Pests ◽  
Artemisia Absinthium ◽  
Total Polyphenols ◽  
Physical Chemical ◽  
Primula Veris ◽  
And Storage

Two classical methods were applied for preparation of four plant extracts, i.e. heat reflux extraction and maceration, exactly for wormwood (Artemisia absinthium), yarrow (Achillea millefolium), oregano (Origanum vulgare) and primrose (Primula veris), plants from the spontaneous flora of Moldova area (Romania). The prepared extracts were preliminarily characterized by some known physical-chemical analytical methods used to evaluate various quality indicators of plant extracts (e.g. total polyphenols and flavonoids concentrations, density, viscosity) as well as comparative analysis of their UV-Vis and FTIR spectra. These vegetal extracts are non-toxic, and may have insecticide effect on the field of agricultural culture and storage pests.

scholarly journals Identification and Quantification the Aroma Compounds from Autochthonous Plants with GC/FID System

2016 ◽  
Vol 8 (2) ◽  
pp. 25-28
Author(s):  
Daniela Maria Șandru ◽  
Diana Stegăruș ◽  
Ecaterina Lengyel ◽  
Ovidiu Tița
Keyword(s):  
Food Industry ◽  
Nutritional Supplements ◽  
Aroma Compounds ◽  
Flavor Compounds ◽  
Melissa Officinalis ◽  
Juniperus Communis ◽  
Teucrium Chamaedrys ◽  
Centaurium Erythraea ◽  
Identification And Quantification

Abstract The aims of this paper is to identify and quantify the flavor compounds that exist in plants in order to valorification in the nutritional supplements and food industry. The study was monitorising 16 different plants and the specific aromas was determined on the GC/FID system. The content esters can be reached on intervals starting from 1.0086 mg/L in Juniperus communis to 27.0172 mg/L in Teucrium chamaedrys. The superior alcohols values parameters start from 5.1209 mg/L for Melissa officinalis to 132.0837 mg/L in Teucrium chamaedrys. The aldehydes started from at minimum of 1.0218 mg/L at Centaurium erythraea and a maximum of 37.1829 at Vaccinium vitis-idaea. The terpene compounds starts from 0.0182 mg/L for Centaurium erythraea to 19.9280 mg/L at Teucrium chamaedrys. The results we obtained by this study represents the foundation for us in these bio potentially active plants in two important industries: the pharmaceutical and the food one-by obtaining nutritional supplements, liquors, extracts and tinctures.

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