Results 21 to 30 of about 71,933 (344)
Increased resin collection after parasite challenge: a case of self-medication in honey bees? [PDF]
PLoS ONE, 2012 The constant pressure posed by parasites has caused species throughout the animal kingdom to evolve suites of mechanisms to resist infection. Individual barriers and physiological defenses are considered the main barriers against parasites in ...
Michael D Simone-Finstrom, Marla Spivak
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Plants, 2020 Propolis is a resinous mixture, made by the honeybees from substances collected from tree or other plant buds, plant exudates, or resins found in the stem, branches, or leaves of different plants.
Daniel Severus Dezmirean +3 more
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Tree resin composition, collection behavior and selective filters shape chemical profiles of tropical bees (Apidae: Meliponini). [PDF]
PLoS ONE, 2011 The diversity of species is striking, but can be far exceeded by the chemical diversity of compounds collected, produced or used by them. Here, we relate the specificity of plant-consumer interactions to chemical diversity applying a comparative network ...
Sara D Leonhardt +2 more
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Anti-Mycobacterium tuberculosis Terpenoids from Resina Commiphora
Molecules, 2019 Four new compounds including two new sesquiterpenoid dimers, commiphoroids E (1) and F (2), a new triterpenoid (3), and a new sesquiterpenoid (4), along with three known terpenoids (5−7) were isolated from Resina Commiphora, whose structures were ...
Chuan-Zhi Zhu +7 more
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Reduction of the formaldehyde content in leathers treated with formaldehyde resins by means of plant polyphenols [PDF]
, 2017 Formaldehyde has applications in many industrial processes, including synthesis of resins and syntans to be used in the retanning process of leather. When resins are employed, they can hydrolyse, releasing formaldehyde.
Cuadros Domènech, Sara +3 more
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Resin glycosides from Convolvulaceae plants [PDF]
Journal of Natural Medicines, 2017 Resin glycosides are well known as purgative ingredients, which are characteristic of certain crude drugs such as Mexican Scammony Radix, Orizabae Tuber, and Jalapae Tuber, all of which originate from Convolvulaceae plants. Depending on their solubility in ether, these are roughly classified into two groups-jalapin (soluble) and convolvulin (insoluble).
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What was a mortarium used for? Organic residues and cultural change in Iron Age and Roman Britain. [PDF]
, 2011 The Romans brought the mortarium to Britain in the first century AD, and there has long been speculation on its actual purpose. Using analysis of the residues trapped in the walls of these ‘kitchen blenders’ and comparing them with Iron Age and Roman ...
Cramp, Lucy J E +2 more
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Detection of Active Compounds in the Aqueous Extract of the Plant Leaves for Eriobotrya Japonica and Study the Effect of the Extract as an Antioxidant [PDF]
Engineering and Technology Journal, 2016 This study was done for the purpose of detecting the active compounds in the aqueous extract of the plant leaves for Eriobotrya japonica that is one of evergreen plants and medicinal plants, which has the advantage, that possess therapeutic properties ...
Majid Sakhi Jaber +2 more
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Antibacterial activity of resin rich plant extracts
Journal of Pharmacy And Bioallied Sciences, 2013 The in vitro antibacterial activity of resin rich methanolic extracts (RRMEs) of Commiphora myrrha, Operculina turpethum, and Pinus roxburghii.Different concentration were studied by agar-well diffusion method against Gram-positive (Staphylococcus aureus, Bacillus subtilis, Micrococcus luteus, Enterococcus faecalis) and Gram-negative bacterial strains (
Bibhu Prasad Panda +4 more
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Scientific Reports, 2021 Brown propolis from permanent preservation and reforestation areas of southern Brazil have attracted international commercial interest and have a unique composition, although little is known about their botanical origins, which are the plant resins used ...
Alan Giovanini de Oliveira Sartori +6 more
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