scholarly journals Minerals and Total Polyphenolic Content of Some Vegetal Powders

Author(s):  
Roxana E. TUFEANU ◽  
Cecilia GEORGESCU ◽  
Adina FRUM ◽  
Mihaela A. TIȚA ◽  
Ovidiu TIȚA

The total polyphenolic content and minerals were determined for chia seeds, Psyllium husks and watermelon rind powder. The minerals content was performed by using the Inductively Coupled Plasma Optical Emissions Spectrometer and Atomic Absorption Spectrometer, technique FIAS-Furnace (for Se). The sample with the highest content of polyphenols was chia (2.69 mg GAE/g s.) followed by the watermelon rind powder. Reduced amounts of polyphenols were found in the Psyllium husks. Also, the total polyphenol concentration increased with the increase of the extraction time on the ultrasonic water bath. Minerals analysis indicated that powders obtained from chia seeds and watermelon rind contained large amounts of potassium, calcium, phosphorus and magnesium. The most abundant mineral in the Psyllium husks powder was found potassium, followed by calcium. In conclusion, these powders can be used as ingredients for functional food and food supplements production due to the high nutritional content and bioactive properties.

2016 ◽  
Vol 61 (01) ◽  
pp. 27-34 ◽  
Author(s):  
Carmen Gâlea ◽  
Gabriel Hancu ◽  
Attila Csiszer ◽  
Csengele Monika Jeszenszky ◽  
Enikő Barabás

Microelement content of different vegetative parts of Pelargonium roseum was evaluated by inductively coupled plasma – mass spectrometry (ICP-MS) technique. The analytical method allowed the determination of 20 elements (Li, Be, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Se, Rb, Sr, Ag, Cd, In, Ba, Tl, Pb, Bi). Samples from different vegetative parts (roots, lignified stems, green stalks, leafs, blooms) were analyzed and compared with soil samples. The vegetative part of the plant contained significant quantities of manganese, zinc and especially iron. The results can be very useful for the determination of the recommended doses of plant products for use in medicinal plant products considering its nutritional content and pharmacological functions.


2011 ◽  
Vol 31 (No. 2) ◽  
pp. 63-69 ◽  
Author(s):  
J. Lachman ◽  
M. Šulc ◽  
A. Hejtmánková ◽  
V. Pivec ◽  
M. Orsák

Contents of polyphenolic antioxidants as total polyphenols and trans-resveratrol in grape musts, grape skins and seeds of twelve vine varieties from the harvests 2001 and 2002 were determined. Polyphenolic antioxidants of grapes are very effective in preventing cancer and cardiovascular diseases. Total polyphenolic content was determined spectrophotometrically with phenol Folin-Ciocalteau&rsquo;s reagent and trans-resveratrol content by the HPLC method. The average annual total polyphenol contents in the years 2001 and 2002 were 171 mg/land 324 mg/lin the must, 7,470 mg/l and 15,600 mg/kg DM in grape skins and 91,450 and 107,440 mg/kg DM in the seeds. The average annual trans-resveratrol values in the years 2001 and 2002 reached 0.817.10<sup>&ndash;2</sup> mg/kg DM and 4.97.10<sup>&ndash;2</sup> mg/kg DM in grape skins and 52.7.10<sup>&ndash;2</sup> mg/kg DM and 4.63.10<sup>&ndash;2</sup> mg/kg DM in the seeds and there was hardly any trans-resveratrol presence in the must. The results were evaluated statistically by Statgraphic and Anova programmes. Statistically significant differences in total polyphenols were found between analysed vintages, varieties and contents in seeds and grape skins. Regarding the trans-resveratrol content, statistically significant differences between vintages were found. &nbsp;


Author(s):  
Владимир Косолапов ◽  
Vladimir Kosolapov ◽  
Виктор Чуйков ◽  
Viktor Chuykov ◽  
Хатима Худякова ◽  
...  

The book outlines the influence of many factors (soil type of growth of forage plants, type of forage plants, the use of fertilizers, climatic conditions) on the content of mineral elements in forage plants and feed. For each macronutrient (calcium, phosphorus, potassium, sodium, chlorine, magnesium, sulfur) and trace element (cobalt, iodine, manganese, zinc, iron, copper), considered as important for feeding animals, the content and transformations of the element in soils are outlined availability of plant forms. The physiological role of this element in plants, its concentration depending on the soil and climatic conditions is considered. For each element, its average content in well-known forage means is given, as well as standards for the concentration of toxic elements. The requirements of farm animals in mineral elements, their influence on each other are also considered. There is a great importance of taking into account the level of mineral elements in the preparation of rations, for which it is necessary to perform laboratory tests, and therefore sets out methods for their determination in the feed. At the same time, special attention is paid to such modern high-performance and precise methods as atomic absorption, with various atomizers and with inductively coupled plasma. The book contains a lot of reference data. It will be very useful for researchers and professionals, especially beginners, in the field of feed production and feed use, students who will get a holistic view of the mineral substances of soil, plants and animals.


2016 ◽  
Vol 50 (6) ◽  
Author(s):  
Górski Krzysztof ◽  
Saba Leon

Studies aimed to determine the usefulness of mineral mixture Bovifosfomag® in bovine nutrition were carried out in southern Podlasie, Poland, over a period of two years. The criterion of its usefulness was the level of particular minerals measured in the hair of dairy cows. The concentrations of calcium, phosphorus and magnesium were measured by the ICP (Inductively Coupled Plasma) method using the ICP spectrometer Philips SC-PU 7000 attached to the Cetac U-5000 AT ultrasonic nebulizer. Hair samples were taken twice, 10-14 days before parturition and after the first month of lactation. Bovifosfomag® mineral mixture, which had been developed on previous macromineral deficiency monitoring studies, in most cases improved the supply of minerals to cows in the surveyed farms. Hair of cows differed significantly in calcium, phosphorus and magnesium content. The reasons for this probably lay in the individual characteristics of the cows. Bovine coat hair proved useful in the diagnosis of mineral deficiencies and revealed a short supply in phosphorus and magnesium in the control group. The study of the mineral composition of hair partially confirmed previous trends in the patterns of mineral levels observed in blood serum. An increase in Ca, P and Mg in the hair of the animals fed the supplement was found.


Sign in / Sign up

Export Citation Format

Share Document