Seasonal Variability of L. Berry Ethanol Extracts: 2. In Vitro Ferric Reducing Ability of Plasma (FRAP) Assay.

In the present study, the seasonal variability of the in vitro ferric reducing ability of plasma (FRAP), total phenols, and terpene hydrocarbon content in 70% ethanol extracts were evaluated. The samples of crushed (CBs) and non-crushed ripe juniper berries (NCBs) collected at five localities in North-East Slovakia during the years 2012-2014 were compared. The method of preparation of the extract influenced the amount of dry matter (DM) in the extracts.

New Mutant Amaranth Varieties as a Potential Source of Biologically Active Substances.

Amaranth species represent a diverse group of plants. Many of them are a rich source of secondary metabolites with many positive biological effects. Total phenolic, total flavonoid and rutin content, antioxidant activity against superoxide and hydroxyl radicals, FRAP (Ferric-reducing ability of plasma) assay and DPPH (2,2-Diphenyl-1-picrylhydrazyl) radical scavenging assay were determined in ethanol extracts of dried leaves of the new Slovak amaranth varieties 'Pribina' and 'Zobor'.

Seasonal Variability of L. Berry Ethanol Extracts: 1. In Vitro Hydroxyl Radical Scavenging Activity.

In the present study, in vitro hydroxyl radical scavenging activities, total phenols and terpene contents in 70% ethanol extracts were evaluated. Samples of crushed (CB) and non-crushed ripe juniper berries (NCB) collected at five localities in North-East Slovakia during the years 2012-2014 were compared. Standard or modified methods for determining phytochemical and antioxidant activity were used together with a novel method for the evaluation of the results after the correction of the measured values per gram of dry matter (DM).

First Report on Evaluation of Basic Nutritional and Antioxidant Properties of Lam. from Caribbean Island of Saint Lucia.

Lam. has been considered as a multipurpose tree. The studies on it focus on its variable nutritional benefits.

Effect of selected dimethylaminochalcones on some mitochondrial activities.

Chalcones and their synthetic cyclic analogues have been shown to possess a full scale of biological activities in a variety of experimental systems. They were assessed to be mostly effective in defense against free radicals in the organism, but several compounds exhibited cytotoxic pro-oxidant activities. The respiratory response and antioxidant status in mitochondria were investigated upon addition of 4'-dimethylaminochalcone (1a) and its cyclic analogues, (E)-2-(4'-((CH3)2 N)-benzylidene)-1-indanone (1b), -1-tetralone (1c), and -1-benzosuberone (1d).

Effects of humic acids in vitro.

Humic acids are known for their overall positive health and productivity effects in animal feeding trials and, controversially, as an aetiological factor of cancer. We tried to assess the in vitro effect of humic acids from a selected source in Slovakia when used at recommended prophylactic dosage. We investigated antioxidant properties, enzymatic and non-enzymatic antioxidant defence system in liver mitochondria and cultured cancer cell lines in vitro.

Serotonin levels in the small bowel mucosa as a marker of ischemic injury during small bowel preservation.

Of the serotonin occurring in the small bowel mucosa, 95% is present in enterochromaffine cells. The cold ischemia during small bowel transplantation results in mucosal injury and releasing of serotonin into the lumen. Because of it, the mucosal concentration of serotonin is decreasing.