Earliest use of birch bark tar in Northwest China: evidence from organic residues in prehistoric pottery at the Changning site
Sign Up to like & getrecommendations! Published in 2018 at "Vegetation History and Archaeobotany"
DOI: 10.1007/s00334-018-0694-7
Abstract: The analysis of organic residues in pottery can provide abundant information on the lives of ancient people, including the natural resources consumed, the techniques applied, the functions of pottery, and so on. In this paper,… read more here.
Keywords: changning site; birch bark; bark; bark tar ... See more keywords
Subcritical extraction of birch bark pentacyclic triterpenes
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DOI: 10.1007/s11172-017-1822-8
Abstract: Natural pentacyclic triterpenes were extracted from birch bark with subcritical solvents. The influence of the solvent nature, temperature, and the number of extraction cycles on the efficiency of the process was studied. Using methanol at… read more here.
Keywords: birch bark; bark; extraction; pentacyclic triterpenes ... See more keywords
Management systems of adhesive materials throughout the Neolithic in the North-West Mediterranean
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Archaeological Science"
DOI: 10.1016/j.jas.2020.105309
Abstract: Abstract Plant resins, tars and organic fossil substances provide valuable insights into the ecological, environmental and cultural contexts of ancient societies. Their study offers evidence of past know-how, production systems, socio-economic networks and mobility. In… read more here.
Keywords: throughout neolithic; birch bark; bark tar; production ... See more keywords
Study of Thermochemical Transformations of Bast of Birch Bark, Structure and Properties of the Produced Porous Carbon Materials
Sign Up to like & getrecommendations! Published in 2020 at "Russian Journal of Applied Chemistry"
DOI: 10.1134/s1070427220090062
Abstract: The porous structure and sorption properties of carbon materials produced by thermochemical activation of the bast of birch bark with potassium hydroxide at 800°C have been studied. The effect of the amount of introduced KOH… read more here.
Keywords: bast birch; carbon materials; birch bark; porous carbon ... See more keywords
Birch-bark tar in the Roman world: the persistence of an ancient craft tradition?
Sign Up to like & getrecommendations! Published in 2019 at "Antiquity"
DOI: 10.15184/aqy.2019.167
Abstract: Abstract Birch-bark tar, used continuously in the territory of modern Europe from the Middle Palaeolithic to the Iron Age, is conspicuous by its absence in the archaeological record of the Roman period, suggesting its replacement… read more here.
Keywords: birch bark; bark tar; persistence;
Delivery Systems for Birch-Bark Triterpenoids and Their Derivatives in Anticancer Research.
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DOI: 10.2174/0929867325666180530095657
Abstract: Birch-bark triterpenoids and their semi-synthetic derivatives possess a wide range of biological activities including cytotoxic effects on various tumour cell lines. However, due to the low solubility and bioavailability, their medicinal applications are rather limited.… read more here.
Keywords: birch bark; bark triterpenoids; delivery systems; systems birch ... See more keywords
Presence of birch bark beetle (Scolytus ratzeburgi) in Croatia
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DOI: 10.31298/sl.143.11-12.2
Abstract: Bark beetles are one of the most important groups of forest pests and in recent years several bark beetle species have significantly impacted two biogeographic regions in Croatia. The Birch bark beetle (Scolytus ratzeburgi) is… read more here.
Keywords: birch; birch bark; bark beetle; scolytus ... See more keywords
Methods of Betulin Extraction from Birch Bark
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DOI: 10.3390/molecules27113621
Abstract: Betulin is the most popular of the known triterpenoids of the lupan series. It has valuable pharmacological properties. It exhibits antibacterial, antiviral, antitumor, hypolipidemic and other types of activity. The prospects of using betulin in… read more here.
Keywords: extraction; birch bark; birch; medicine ... See more keywords
Oleogels with Birch Bark Dry Extract: Extract Saving Formulations through Gelation Enhancing Additives
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DOI: 10.3390/pharmaceutics12020184
Abstract: Triterpenes from the outer bark of birch have many beneficial biological and pharmacological activities. In particular, its wound healing efficacy is of paramount importance. Apart from that, particles of a birch bark dry extract aggregate… read more here.
Keywords: birch bark; gelation; bark dry; dry extract ... See more keywords
Electrospun Bioactive Wound Dressing Containing Colloidal Dispersions of Birch Bark Dry Extract
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DOI: 10.3390/pharmaceutics12080770
Abstract: Novel birch bark dry extract (TE)-loaded polyvinyl alcohol (PVA) fiber mats intended for wound therapy were developed through an electrospinning process. Colloidal dispersions containing TE as the active substance were prepared by the high-pressure homogenization… read more here.
Keywords: birch bark; dry extract; wound; colloidal dispersions ... See more keywords
Optimized Birch Bark Extract-Loaded Colloidal Dispersion Using Hydrogenated Phospholipids as Stabilizer
Sign Up to like & getrecommendations! Published in 2020 at "Pharmaceutics"
DOI: 10.3390/pharmaceutics12090832
Abstract: This study investigated the formulation and processing of aqueous colloidal dispersions containing a birch bark dry extract (TE) as the active substance and hydrogenated phospholipids (Phospholipon 90H) as stabilizer, which can be used in the… read more here.
Keywords: birch; birch bark; hydrogenated phospholipids; bark extract ... See more keywords