Results 171 to 180 of about 23,679 (205)

Heartwood

2017
The thousand fine points and tops of the trees delight me; they are the plumes and standards and bayonets of a host that marches to victory over the earth. The trees are handsome towards the heavens as well as up their boles; they are good for other things than boards and shingles....
Richard Higgins, Richard Higgins
openaire   +1 more source

Taxus heartwood constituents

Phytochemistry, 1969
Abstract The heartwood of several Taxus species has been investigated. All contain a series of six lignans also occurring in Fitzroya cupressoides. The neutral constituents, however, are different from those of Fitzroya.
H. Erdtman, K. Tsuno
openaire   +1 more source

New Insights into Heartwood and Heartwood Formation

2013
The formation of true or obligate heartwood in the innermost living xylem tissues of many tree species is one of the most important ecological and economical secondary differentiation processes. Natural durability, biological, technological, and esthetic parameters of wood and its products depend on the presence, quality, and quantity of heartwood ...
Andreas Kampe, Elisabeth Magel
openaire   +1 more source

Polyphenols of Intsia heartwoods

Phytochemistry, 1973
Abstract Robinetin is the main polyphenol of the heartwood of Intsia bijuga and is accompanied by smaller amounts of 3,5,4′-tri- and 3,5,3′,4′-tetra-hydroxystilbenes, dihydromyricetin, myricetin and naringenin. The wood contains large amounts of water soluble polymers including leucocyanidin. The stilbenes are absent from the sapwood. Samples of I.
William Edwin Hillis, Yoshikazu Yazaki
openaire   +1 more source

Heartwood constituents ofPinus formosana

Experientia, 1970
Die Untersuchung der sauren Anteile eines Extraktes des Kernholzes vonPinus formosana zeigte das Vorhandensein von Pinostrobin und Tectochrysin neben Dehydroabietin- und Isodextroprimarsaure. Diese Befunde erlauben,P. formosana der Gruppe Haploxylon zuzuteilen.
Kung-Tsung Wang, K. C. Das, Yu-Yin Lin, B. Weinstein   +3 more
openaire   +1 more source

CONSTITUENTS OFHOLOPTELEA INTEGRIFOLIAHEARTWOOD

Planta Medica, 1977
The bark yields β-sitosterol, oleanolic acid and hederagenin besides the triterpenoid already reported.
G, Misra, S C, Bhatnagar, S K, Nigam
openaire   +2 more sources

Two ellagitannins from Punica granatum heartwood

Phytochemistry, 2002
In the course of studies on polyphenol metabolism in Punica granatum heartwood two new ellagitannins, diellagic acid rhamnosyl (1-->4) glucopyranoside and 5-O-galloylpunicacortein D were isolated and characterized together with four known tannin metabolites, punicacortein D, punicalin, punicalagin and 2-O-galloylpunicalin.
Sayed A A, El-Toumy, Hans W, Rauwald
openaire   +2 more sources

Anthraquinones from Cassia sophera heartwood

Phytochemistry, 1982
From the heartwood of Cassia sophera two new isomeric anthraquinones, 1,2,7-trihydroxy-6,8-dimethoxy-3-methyl- and 1,2,6-trihydroxy-7,8-dimethoxy ...
Swadesh Malhotra, Krishna Misra
openaire   +1 more source