152 research outputs found

    Pojedine biljne vrste iz Biblije

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    Many plant species are mentioned in the Bible. This article presents some important plant species in the Bible: Olea sativa (Hoff mg. et Lk.) Fiori, Phoenix dactylifera L, Ficus carica L., Prunus amygdalus Stokes, Punica granatum L., Coriandrum sativum L., Linum usitatissimum L. and Ruta graveolens L. and its use in different church rituals

    Kvantitativna analiza fenolnih spojeva ljepljivog omana – Inula viscosa (L.) Ait.

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    The quantitative analysis of phenolic compounds (phenolic acids, flavonoids, total polyphenols, nontannic polyphenols and tannins) was carried out in the samples of stems, leaves and flowers of Inula viscosa. The content of all investigated compounds was determined using spectrophotometric methods. The quantity of phenolic acids ranged from 1.71 to 5.92%, while the content of flavonoids varied between 0.157 and 0.498%. The leaves contained the highest quantity of phenolic acids. The content of total polyphenols ranged from 4.56 to 11.30%. The quantity of polyphenols unadsorbed on hide powder (nontannic polyphenols) was between 2.65 and 7.37% while the quantity of tannins ranged from 1.91 to 3.93%. Statistical analysis was assessed by Student's t- -test. The content of all investigated compounds depended on the plant organ and climatic factors

    Pojedine biljne vrste kao simboli Božića

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    Many plant species are mentioned as Christmas-symbols. This article presents description (morphological characteristics and distribution) of some frequent »Christmas- plants« (Ilex aquifolium L., Euphorbia pulcherrima Willd. ex Klotzsch, Viscum album L. and Ruscus hypoglossum L.) and their historical connection with Christmas

    Gutaperka - obilježja i primjena u dentalnoj medicini

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    Gutta-percha is the rigid natural latex produced from the plant species Palaquium gutta (Hook.) Burck (Sapotaceae). It is a polyterpene, a polymer of isoprene, or polyisoprene, specifi cally trans-polyisoprene. Gutta-percha remains to be the main core material used for root canal fillings in dentistry. It has unique property of inertness, better sealing ability and the ability to do retreatment in case of failure, makes it an indispensable obturating material currently

    Quantitative analysis of polyphenols in eighteen Hypericum taxa

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    Background and Purpose: Phenolics are one of the most ubiquitous groups of plant secondary metabolites, which play an important role in plant stress tolerance, growth, reproduction, resistance to pathogens, pigmentation and etc. In this study we have analysed the content of polyphenols in the aerial parts of eighteen cultivated Hypericum taxa, collected over two consecutive seasons. No peer-reviewed literature could be found regarding determination of the quantities of polyphenols present in themajority of the analyzed taxa of the native or cultivated samples. Quantitative analysis of phenolic compounds was therefore investigated. Materials and Methods: The content of phenolic compounds (total polyphenols, nontannin polyphenols and tannins) in the aerial parts of eighteenHypericumtaxa collected over two consecutive seasons was determined by spectrophotometric methods. Results: The quantity of the total polyphenols of investigated taxa (Table 1), ranged from 3.96 to 16.88%. The highest content of total polyphenols was found in the samples of H. kouytchense (16.88%) collected in 2011 andH. hookerianum(14.75%) collected in 2012, while the samples ofH. richeri subsp. grisebachii contained the lowest amount of total polyphenols (4.55 and 3.96%). The average content of tannins in the majority of investigated samples was found to be two times higher than the content of nontannin polyphenols, but in the rest of the samples, themost often ratio of tannins to nontannin polyphenols was 1:1. Conclusion: The variable content of polyphenols examined here, probably reflects the plant adaptation to seasonal changes in its environment. The occurrence of these metabolites in the taxa explored, hopefully will contribut

    Divlja šparoga (Asparagus acutifolius L.) – botanički podaci, kemijski sastav i uporaba

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    Botanical data, chemical composition and use of the wild asparagus (Asparagus acutifolius L.) are presented in this paper. Wild asparagus is rich in various minerals and vitamins, especially vitamin C and folic acid, as well as many flavonoids, making it suitable for many types of usage. Its fresh sprouts are among the richest sources of glutathione, one of the strongest natural antioxidants, while dried flowers contain high content of flavonoids rutin and quercetin, making wild asparagus beneficial to blood vessel protection. It is commonly used among pregnant women due to its positive effect on lactation and the important role of folic acid in the proper fetal development. Furthermore, wild asparagus is regarded as a strong diuretic, making it appropriate for toxin elimination and detoxification

    Flavonoids of Guiera senegalensis J. F. GMEL. − thin-layer chromatography and numerical methods

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    The efficiency of seven thin-layer chromatographic systems for separating nine flavonoids isolated from Guiera senegalensis J. F. GMEL. (Combretaceae) was investigated. For this purpose, three mathematical techniques were applied. The first technique was the calculation of the information content derived from Shannon’s equation for each chromatographic system. In the second technique, the discriminating power of the systems was measured individually and in various combinations. The third technique classifies chromatographic systems according to clusters. The classification was carried out by the numerical taxonomy methods. The most suitable chromatographic systems for the separation of the investigated flavonoids are: ethyl acetate : ethylmethylketon : formic acid : water, 60:15:3:2, and ethyl acetate : formic acid : acetic acid : water, 100:11:11:27

    Pripravci ljekovitih biljaka za sportaše

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    Together with training and appropriate rest, diet is a very important part of professional athletes’ lives. This article is about plants preparation that can help sportsmen reach better performances and save them from injuries. The text involves a botanical description, chemical composition, effects, mechanism of action and use of: Salvia hispanica, Beta vulgaris subsp. vulgaris var. conditiva, Panax ginseng, Paullinia cupana, Curcuma longa and Aspalathus linearis. Their benefits can be various, and include providing energy, antiinflamatory, antioxidant, antistress effects, as well as rehydration, muscle regeneration and health preservation

    Pripravci ljekovitih biljaka u liječenju kožnih bolesti

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    Botanical data, chemical composition and use of the most common medicinal plants preparations in the treatment of skin diseases are presented in this article. These plants include: Oenothera biennis, Borago officinalis, Avena sativa, Lavandula angustifolia, Cocos nucifera, Matricaria recutita, Hamamelis virginiana and Olea europaea, that are used for the treatment of various skin diseases such as atopic dermatitis, psoriasis vulgaris, ichtyosis non-bullosa, or eczema craquelé. Even today, in the era of highly specialized medicine, medicinal plant preparations are still used in dermatology especially in the treatment of inflammatory and itchy skin conditions. Patients trust and believe in beneficial effect of natural products, such as marigold or comfrey ointment. However, caution is needed in persons with history of allergic reactions or atopy, since plants can cause allergic or irritative inflammatory reactions in such individuals. Recent literature data confirm existing interest in the medicinal plants usage in dermatology
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