Processing is one of the most crucial factors affecting polyphenol content in foods. Therefore, study aimed at evaluation heat treatment effects (microwaving, steaming, baking, and boiling) on chlorogenic acids, total polyphenols, antioxidant activity three varieties sweet potato with different flesh colors (Beauregard—orange-fleshed, O’Henry—white-fleshed, 414-purple—purple-fleshed). According to high performance liquid chromatography analysis, acid was predominant potatoes. Obtained...

Abstract This study aimed to evaluate the mineral content, and content of bioactive compounds in fruits Cornelian cherry ( Cornus mas L.). Neochlorogenic acid, chlorogenic caffeic rutin were determined samples. Vitamin C ranged from 610.36 1344 mg kg −1 FW. Content K, Ca, P, Mg, Na samples 1750.8 2645.7 FW, 281.14 561.62 180.38 294.95 68.19 115.43 2.48 71.33 FW respectively. Fe, Zn, Cu, Mn, Ni, Cr, Co 2.77 4.88 0.49 0.99 0.25 0.53 0.07 0.17 0.02 0.13 0.01 0.08 Variations across cultivars...

The high-performance liquid chromatography coupled with a diode array detector (HPLC-DAD) was optimized for the simultaneous determination of 11 compounds, belonging to polyphenols (gallic acid and seven catechins) methylxanthines (caffeine, theobromine, theophylline). results obtained all validation parameters HPLC-DAD method showed that is sensitive enough routine analysis basic chromatographic equipment, thus it has significant potential be highly applicable in common laboratory practice....

Common buckwheat (Fagopyrum esculentum Moench) is a valuable source of proteins, B vitamins, manganese, tryptophan, phytochemicals with an antioxidant effect, and the natural flavonoid rutin. Due to its composition, supports human immune system, regulates blood cholesterol, suitable for patients diabetes or celiac disease. The study aimed compare allocation selected phenolic acids (neochlorogenic acid, chlorogenic trans-caffeic trans-p-coumaric trans-sinapic trans-ferulic acid) flavonoids...

Edible mushrooms represent a food with high nutritional properties, and their consumption has positive effect on the health of consumers. The aim paper is to identify behavior preferences consumers in edible Slovakia. was achieved by conducting consumer survey using snowball sampling method sample 1166 respondents Slovak Republic, which 1032 were mushrooms. Using statistical methods (the Chi-square test independence, Kruskal-Wallis H test, Friedman as well categorical principal component...

Sixteen male red deer (age <1.5 year), both farm reared and pastured in Slovakia, were assessed with an emphasis on the variability of pH, chemical, structural, textural parameters their Musculus longissimus thoracis et. lumborum. Pastured had a higher pH than farmed deer. Regarding chemical compounds, meat from contained less protein, fat, ash, regarding technological parameters, drip loss cooking was when fried at 80°C. Meat cohesiveness quite similar for groups, while shear force lower...

Three edible mushroom species (Imlera badia, Boletus subtomentosus, Xerocomellus chrysenteron) sampled in 60 different localities of Slovakia were evaluated to determine health risks (associated with mercury content) arising from their consumption. Total content soil and samples was determined by an AMA-254 analyzer. Soil pollution contamination factor (Cf), load index (PLI), geoaccumulation (Igeo). Bioaccumulation (BAF), translocation (Qc/s), provisional tolerably weekly intake (%PTWI),...

In the present work, we focused on two aspects of mercury (Hg) bioconcentration in above-ground parts Neoboletus luridiformis. first part, monitored potential individual anatomical a particular fruiting body and evaluated obtained data by spline interpolation method. second assessing content 378 samples N. luridiformis associated substrates from 38 localities with different levels Hg Slovakia. From substrate fungi, ecological indicators (geoaccumulation index - Igeo, contamination factor Cf...

Potatoes (Solanum tuberosum L.) are an essential food for the human diet and thus represent important source of biologically active substances. This study aimed at investigating content bioactive substances (total anthocyanin polyphenol contents chlorogenic acid) in seven potato varieties (Belana, Cecile, Magenta Love, Mozart, Talentine, Toscana, Violet Queen) with various flesh skin colors. To evaluate impact maturity on analyzed parameters, samples were harvested two different periods (1st...

Although white lupin is the oldest known legume in history, it has been forgotten for many years. Now, interest of food producers concerning increased again. The aim this study was to evaluate total phenolic content (TPC), antioxidant activity (AA), and selected phenolics 11 cultivars. determined TPC interval 4260–5663 mg GAE/kg DM values AA using DPPH•, ABTS•+, FRAP methods were ranges 0.993–1.878, 5.496–7.924, 1.328–1.741 μmol TE/g DM, respectively. Individual (4-hydroxybenzoic acid,...

Capsicum chili peppers are popular vegetables in Slovakia. They provide a supply of health-promoting substances, but contaminated can pose serious health risk to the people who consume them. Therefore, aim this study was determine content heavy metals (Mn, Zn, Cr, Cu, Ni, Cd, Pb and Hg) soil as well selected varieties genus grown southern The results were compared with limit values given by Law no. 220/2004 (valid SR) threshold proposed European Commission (EC) (2006). gained result showed...

Wild-growing edible mushrooms contain many biologically valuable substances. However, they are considered a risk commodity due to their extremely high capacity for bioaccumulation of potential elements and pollutants from the environment. Four bolete genus Leccinum were collected 16 forested areas Slovakia June October 2019. The total mercury content in soil fruiting body parts was determined by an AMA-254 Advanced Mercury Analyzer. Soil pollution evaluated contamination factor (Cfi)....

The paper is focused on monitoring of the content selected elements (Al, Cd, Cu, Hg, Pb, Se and Zn) in three species edible mushrooms: Cantharellus cibarius Fr., Suillus luteus (L.) Roussel Imleria badia (Fr.) Vizzini from areas Slovakia (Prašice, Bobrov Dobroč). Qualitative quantitative determination observed was performed by ICP-OES and/or CV-AAS. All results were statistically evaluated at both descriptive differential analysis level. Due to fact that picking subsequent consumption wild...

The dichloromethane extraction was applied to extracted volatile compounds of the six developmental stages caps and stipes an Amanita rubescens mushroom relative contents were measured with gas chromatography-mass spectrometry. number identified ranged between 53 52, respectively, a high ratio alkane volatiles. significant differences aroma determined in identify their development. fully mature stage characterized by 4,6-dimethyl-dodecane (7.69 ± 1.15%), 2-hexyl-1-decanol (11.8 1.61%),...

The objective of this paper was to examine the total polyphenols, vitamin C and capsaicin contents pepper (varieties: Garam F1, Alma, Poseidon, Promontor, Slovakia, Claudius, Bhut Jolokia, Serrano, Candlelight) their correlation with antioxidant activity by using high performance liquid chromatography Folin-Ciocalteu method. limit detection for 0.09 µg.g−1.Vitamin ranged from 95.76 2,139 44.40 2,224 μg.g−1 dry matter (DM), respectively. determined polyphenol content (TPC) 4,230 9,939 mg...

Hazardous (heavy) metals are widely spreaded in our environment, which is endangered by these hazardous that infiltrate water, air, soil, plants and subsequently the food chain. This has a major impact on human health animal health, because can cause serious problems. For this reason, it very important to control occurrence of heavy air then eliminate them permissible limit values. Spices have been used past as natural flavors, highlight or create flavor. Nowadays, spices commonly found...

The purpose of this study was to investigate changes in TPCs, acid value and peroxide as well fatty acids composition edible oils during french fries production. Lower TPCs content found rapeseed oil (3.3%) the threshold (24%) achieved on fourth day. total time for deterioration deep-frying 23½ hours. On contrary, fresh sunflower at first day 5.5% limit 24% reached third 17½ results indicated significant differences (&lt;0.05) between process. At beginning French oil, number 0.374 mg KOH.g-1...

The aim of this work was to evaluate the effect addition (0.5 %, 1 % and 1.5 %) vegetable oils (pumpkin, rapeseed sunflower oil) on technological quality (rheological properties dough, bakery indicators experiment) wheat dough subsequently bread. flour type T 650 used as a base also control. In determined dry matter 86.65 %. By determining (crude protein content, falling number, starch ash titratable acidity Zeleny index) it is possible summarize that four strong. gluten were optimal...

Eighteen wine samples (varieties - Lindenblaetrige, Yellow Muscat and Furmint), originated from Slovak Hungarian part of Tokaj region, were analyzed for the content total polyphenols, flavonoids antiradical activity by UV-VIS spectrometry. Our results showed that wines had higher healthy useful phenolic flavonoid compounds (all three varieties) value (two than wines. The highest contents we found out in variety Muscat. was Lindenblaetrige. confirmed very strong linear correlations between...

Garlic (Allium sativum L.) is used as both a food and traditional medicine for several illnesses throughout the world. 7 garlic cultivars (Novozamocky, Lumir, Mojmir, Havran, Garpel, Eden Rose, Bjetin) were analyzed in this study. Since modern consumer demands encourage consumption of foods with positive effects on human health, research into nutritional properties chemical composition crops, like garlic, important. Knowledge these could support cultivation highest content bioactive...

The objective of the study was to investigate potential adulteration commercial caprine milks and cheeses with bovine milk using qPCR assay. assay comprised bovine-, ovine- caprine-specific primers TaqMan probe mammalian internal control. Specificity, sensitivity, linearity, reproducibility efficiency were tested as well. Specificity verified by running reaction on DNA other milk-producing species (caprine ovine) made-up bovine-caprine (v/v) mixes. In both experiments, a fragment amplified...