Composition of Sugars in Wild and Cultivated Lingonberries ( L.).

Products of lingonberries are widely used in the human diet; they are also promising beauty and health therapeutic candidates in the cosmetic and pharmaceutical industries. It is important to examine the sugar profile of these berries, due to potential deleterious health effects resulting from high sugar consumption. The aim of this study was to determine the composition of sugars in wild clones and cultivars or lower taxa of lingonberries by HPLC-ELSD method of analysis.

Antioxidant Activities of L. Leaves within Cultivars and Their Phenolic Compounds.

Lingonberry leaves are the subject of numerous studies because of antioxidant properties, positive influence on the health and potential use in the prevention and treatment of chronic diseases. In this work, the radical scavenging, reducing, chelating activities, and phenolic composition of ten lingonberry leaves cultivars, one subspecies, and one variety were investigated. Furthermore, the antioxidant activity of individual phenolic compounds, that can be found in lingonberry leaves, were analyzed, and structure-activity relationship was determined.

Phytochemical Profiling of Fruit Powders of Twenty L. Cultivars.

Rowanberries have been traditionally used in various processed foods. Scientific research demonstrates the pharmacological effects of L. fruits are determined by their unique composition of biologically active compounds.

Rosmarinic Acid and Extracts Differently Affect Glioblastoma Cells.

Lemon balm ( L.) has many biological effects but especially important is its neuroprotective activity. The aim of the study is to produce different extracts of and analyse their chemical composition and biological properties on rat glioblastoma C6 cells.

EFFECT OF PERILLA FRUTESCENS EXTRACTS AND ROSMARINIC ACID ON RAT HEART MITOCHONDRIAL FUNCTIONS.

Perilla frutescens L. due to its aromatic, antibacterial, anti-inflammatory and antioxidant traits has been traditionally used as medicinal plant in Eastern Asia. Alterations of mitochondria are interconnected with many chronic diseases.

Phenolic Profiles and Contribution of Individual Compounds to Antioxidant Activity of Apple Powders.

Apples (Malus domestica L.) are the most common source of phenolic compounds in northern European diet. Besides pectins, dietary fibers, vitamins, and oligosaccharides they contain phenolic compounds of different classes.

Phenolic composition and antioxidant activity of Malus domestica leaves.

The aim of this study was to determine the composition and content of phenolic compounds in the ethanol extracts of apple leaves and to evaluate the antioxidant activity of these extracts. The total phenolic content was determined spectrophotometrically, as well as the total flavonoid content in the ethanol extracts of apple leaves and the antioxidant activity of these extracts, by the ABTS, DPPH, and FRAP assays. The highest amount of phenolic compounds and flavonoids as well as the highest antioxidant activity was determined in the ethanol extracts obtained from the apple leaves of the cv.

Phytochemical and antioxidant profiles of leaves from different Sorbus L. species.

Leaves of Sorbus L. have been used in various traditional medicine systems. Phenolic compounds determine the main pharmacological effects of Sorbus L.

Quality evaluation of different preparations of dry extracts of birch (Betula pendula Roth) leaves.

Qualitatively prepared dry extracts are advantaged over conventional fluid extracts. Extracts of Betula pendula Roth leaves possess mild diuretic effects and anti-inflammatory activity. In this work, the spray-drying and lyophilisation processes were evaluated for producing dry extracts of birch leaves.

Phenolic and antioxidant profiles of rowan (Sorbus L.) fruits.

Fruits of different Sorbus L. species have been traditionally used in food production and in the treatment of various ailments. Besides common antioxidant active phytochemicals such as ascorbic acid, tocopherols and carotenoids, fruits are rich in phenolic compounds that are of particular interest.

Comparative evaluation of post-column free radical scavenging and ferric reducing antioxidant power assays for screening of antioxidants in strawberries.

ABTS and FRAP post-column techniques evaluate the antioxidant characteristics of HPLC separated compounds with specific reagents. ABTS characterize their ability to scavenge free radicals by electron-donating antioxidants, resulting in the absorbance decrease of the chromophoric radical. FRAP - is based on the reduction of Fe(III)-tripyridyltriazine complex to Fe(II)-tripyridyltriazine at low pH by electron-donating antioxidants, resulting in an absorbance increase.

Chlorogenic acid, rutin and hyperoside content in Fragaria vesca, F. viridis and F. moschata in Lithuania.

In Lithuania, two species of the genus Fragaria L. (Rosaceae), F. vesca L.

Optimization and validation of post-column assay for screening of radical scavengers in herbal raw materials and herbal preparations.

On-line method, which combines HPLC distribution and post-column reaction, was designed for the search of individual antioxidants. Optimization of the assay was performed evaluating optimal ABTS(+) radical cation concentration in the reactor, reaction time, impact of flow rate, reaction coil length. HPLC-ABTS assay validation in this work was performed by assessing reference antioxidant negative peak areas in radical scavenging chromatogram.

Investigation of contribution of individual constituents to antioxidant activity in herbal drugs using postcolumn HPLC method.

The most important attention is paid to the search of natural antioxidants and their evaluation in medicinal and food raw materials of plant origin. A number of plants, their extracts, food products, and medicinal preparations appear to be the objects of scientific research. Effectiveness and informative character of research, undoubtedly, depend on relevance, sensitivity, and efficiency of the methods chosen.