A single loblolly pine tree approximately 45 years in age was harvested for use in this study. Increment core samples from throughout the length of the tree bole were analyzed for terpenes. Lumber samples from different locations within the tree were tested for volatile organic compound (VOC) emissions in a pilot-scale kiln. The concentration of terpenes was also determined in samples from lumb...

BACKGROUND Among the naturally occurring compounds, turmeric from the dried rhizome of the plant Curcuma longa has long been used extensively as a condiment and a household remedy all over Southeast Asia. Turmeric contains essential oil, yellow pigments (curcuminoids), starch and oleoresin. The present study was designed for investigating the neuroprotective efficacy and the time window for eff...

Grand fir (Abies grandis) has been developed as a model system for studying defensive oleoresin formation in conifers in response to insect attack or other injury. The turpentine fraction of the oleoresin is a complex mixture of monoterpene (C10) olefins in which (-)-limonene and (-)-alpha- and (-)-beta-pinene are prominent components; (-)-limonene and (-)-pinene synthase activities are also in...

Terpenoids, naturally occurring compounds derived from isoprene units present in pine oleoresin, are a valuable source of chemicals used in solvents, fragrances, flavors, and have shown potential use as a biofuel. This paper describes a method to extract and analyze the terpenoids present in loblolly pine saplings and pine lighter wood. Various extraction solvents were tested over different tim...

Pine forests throughout the world are subject to disturbance from tree-killing bark beetles, but pine species differ in their susceptibilities. In the southeastern United States, Pinus palustris Mill. suffers far less mortality from the southern pine beetle, Dendroctonus frontalis Zimmermann, than do its sympatric congeners. We tested the commonly invoked hypothesis that P. palustris has relati...

Grand fir (Abies grandis) saplings and derived cell cultures are useful systems for studying the regulation of defensive oleoresinosis in conifers, a process involving both the constitutive accumulation of resin (pitch) in specialized secretory structures and the induced production of monoterpene olefins (turpentine) and diterpene resin acids (rosin) by nonspecialized cells at the site of injur...

In a search for plant extracts with potent antimicrobial activity, turmeric (Curcuma longa) was extracted to get volatile oil and total curcuminoids .Further total curcuminoids portion was isolated by column chromatography to get curcumin , bisdemethoxycurcumin and demethoxycurcumin. The isolated curcuminoids were identified and characterized by melting point, thin layer chromatography, infra r...

Members of the Zingiberaceae such as turmeric (Curcuma longa L.) and ginger (Zingiber officinale Rosc.) and fenugreek accumulate at high levels in their rhizomes important pharmacologically active metabolites that appear to be derived from the phenylpropanoid pathway. The major constituens of these spices are in ginger, the gingerols, in turmeric these are the curcuminoids and in fenugreek 5, 7...

Seventeen patients suffering from rheumatoid arthritis varying in duration from 5 months to 2 years were included in the study. Anywhere from 5 to 12 joints were involved. They were already on any one or more of the NSAIDs which brought about severe gastric distress and consequent non-compliance of drug intake. But they were asked to continue them along with Rumalaya, 2 tabs. t.i.d. for 8 weeks...

E)-a-Bisabolene synthase is one of two wound-inducible sesquiterpene synthases of grand fir (Abies grandis), and the olefin product of this cyclization reaction is considered to be the precursor in Abies species of todomatuic acid, juvabione, and related insect juvenile hormone mimics. A cDNA encoding (E)-a-bisabolene synthase was isolated from a wound-induced grand fir stem library by a PCR-ba...