Results 21 to 30 of about 2,678,573 (309)

Species-level determination of closely related araucarian resins using FTIR spectroscopy and its implications for the provenance of New Zealand amber [PDF]

open access: yesPeerJ, 2015
Some higher plants, both angiosperms and gymnosperms, can produce resins and some of these resins can polymerize and fossilize to form ambers. Various physical and chemical techniques have been used to identify and profile different plant resins and have
Leyla J. Seyfullah   +2 more
doaj   +2 more sources

Indigenous technical knowledge on the medicinal uses of natural resins and gums in India   [PDF]

open access: yes, 2023
India has a rich heritage of species biodiversity. Many plant species and their products, especially resins and gums, have been used by people through Indigenous Technical Knowledge (ITK) to cure several ailments, including complex diseases, for ages ...
Chowdhury, Arnab Roy; Scientist ICAR- Indian Institute of Natural Resins and Gums, Ranchi, India   +5 more
core   +1 more source

Tree resin composition, collection behavior and selective filters shape chemical profiles of tropical bees (Apidae: Meliponini). [PDF]

open access: yesPLoS 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
doaj   +1 more source

Recent advances in Fenton-like treatment of radioactive ion exchange resins

open access: yesChemical Engineering Journal Advances, 2023
Ion exchange resins (IERs) are widely used to remove radioactive contaminants from various commercial nuclear power plant systems. After the completion of their useful life cycle, IERs are removed from the nuclear facility and are known as spent resins ...
Muhammad Aamir Hafeez   +6 more
doaj   +1 more source

Characterisation of the physico-chemical and optical properties of Australian native plant exudates for a simple method to determine archaeological resins and gums

open access: yes, 2022
Plant exudates, specifically resins and gums, have been used for millennia for a variety of purposes. This research characterises Australian plant exudates to allow simple procedures to be used for the characterisation and determination of plant exudates
Matheson, CD, C.D. Matheson
core   +1 more source

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]

open access: yesEngineering 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
doaj   +1 more source

Increased resin collection after parasite challenge: a case of self-medication in honey bees?

open access: yesPLoS 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
doaj   +1 more source

An insight into the botanical origins of propolis from permanent preservation and reforestation areas of southern Brazil

open access: yesScientific 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
doaj   +1 more source

Resin glycosides from Convolvulaceae plants [PDF]

open access: yesJournal 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).
openaire   +2 more sources

Stingless bees as collectors of resin from Bertholletia excelsa Bonpland (Lecythidaceae)

open access: yesEntomological Communications, 2023
Stingless bees build their nests using, in general, clay, wax and resins; in addition, these bees also use resins for defense against natural enemies and as an antimicrobial agent.
Iris A. Cruz, Paulo C. S. Barroso
doaj   +1 more source

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