Showing papers in "Phytochemistry in 1976"

TL;DR: The physical, chemical and immunological characteristics of the legumin and vicilin preparations from Pisum sativum are summarised and the distributions of proteins with sedimentation coefficients and/or immunological determinants similar to those of legumin this article.

TL;DR: A review of the present state of knowledge on the biological activities and mechanism of action of some sesquiterpene lactones highlighted in Compositae and other angiosperm families and even in some liverworts.

TL;DR: There is other evidence to support the contention that the assimilation of ammonia into amino acids occurs via glutamine synthetase and glutamate synthase, and that it is unlikely that glutamate dehydrogenase plays a major role in nitrogen assimilation in bacteria or higher plants except in circumstances of ammonia excess.

TL;DR: In this paper, the 220MHz NMR spectra of forty two steroids were reported and the influence of substituents, solvents and stereochemistry on methyl group chemical shifts was discussed.

TL;DR: In this paper, glucosinolates from seventy-nine 8-week-old plant species were hydrolysed and the volatile products identified by GC-MS and related to previous published findings.

TL;DR: The red-pigmented fermenting yeast Phaffia rhodozyma contains astaxanthin as the principal carotenoid pigment as mentioned in this paper, and a possible biosynthetic scheme for the formation of the pigment is suggested.

TL;DR: In this paper, bound diferulic acid has been identified in small amounts in the water-insoluble pentosans of wheat endosperm and evidence is presented suggesting that diferilic acid crosslinks adjacent polysaccharide molecules and reduces their solubility.

TL;DR: In this paper, two new glucosides, rebaudiosides A and B, were isolated from the leaves of Stevia rebaudiana and formulated as β-glucosyl ester.

TL;DR: A radioimmunoassay technique has been developed for the measurement of digoxigenin glycosides in crude extracts from both fresh and dried leaf material of Digitalis lanata, found to correlate with the usual fluorimetric determination of digoxin, but is more sensitive by a factor of 10 4.

TL;DR: Condensed tannins have been isolated from legume pasture species and purified by gel chromatography on Sephadex G-50 and LH-20 media as discussed by the authors, and they have been used for protein synthesis.

TL;DR: Trans,trans-, cis,trans- and cis,cis-diferulic acids were released from cell walls of Lolium multiflorum by treatment with sodium hydroxide.

TL;DR: Cis and trans-resveratrol (3,5,4′-trihydroxystilbene) have been isolated from the infected hypocotyls of Arachis hypogaea and implicated as phytoalexins.

TL;DR: The close biogenetic relations between the compounds are discussed, and their possible biological function as antifungal agents (“phytoalexins”) is considered.

TL;DR: A toxin, named phaseolotoxin, which causes leaf-chlorosis in bean leaves has been isolated from liquid cultures of Pseudomonas phaseolicola, and purified.

TL;DR: Phoma sorghina Sacc, the fungus implicated in the aetiology of onyalai, a haematologic disorder, produces magnesium and calcium tenuazonate as toxic constituents as mentioned in this paper.

TL;DR: Astaxanthin isolated from the yeast Phaffia rhodozyma has the 3 R,3′ R -configuration, opposite to that of other sources which have been so far investigated as mentioned in this paper.

TL;DR: A new natural imino-alcohol, 2,5-dihydroxymethyl 3,4-dhydroxypyrrolidine has been isolated from the leaves of Derris elliptica and its structure was determined by chemical and physical methods.

TL;DR: Pronounced increases in activity of phenylalanine ammonia-lyase, cinnamic acid-4-hydroxylase and caffeic acid- O -methyltransferase are reported.

TL;DR: The results obtained showed a characteristic two phase pattern. as discussed by the authors showed that in the first phase the sugar concentration remained roughly constant, but in the second phase a considerable increase in both sucrose and respiration occurred.

TL;DR: In this article, the 13 C NMR spectra of 15 neolignans of several structural types and two lignans were analyzed and their carbon shifts assigned, and the shifts of pyrogallol ether and ethyl phenyl carbinyl ether models were used in this connection.

TL;DR: DPA and epi -DPA were shown to be formed separately from PA and could not be inter-converted either by the extraction conditions employed or when fed to bean shoots during short term experiments, indicating that the applied abscisic acid is not metabolised in a manner identical with that of the endogenous material.

TL;DR: Six pterocarpans and 11 structurally related isoflavonoids were tested for antifungal activity against Fusarium solani f.

TL;DR: Flavonoids are apparently absent from chloroplasts of Phaseolus aureus and Morus alba although whole-leaf extracts of these species are rich in quercetin derivatives.

TL;DR: Three ellagitannins present in Tellima grandiflora have been isolated and partly identified as mentioned in this paper, two are 2,3-digallyl-4,6-hexahydroxydiphenoyl -β- d -glucopyranose and the third is complex, with five gallyl and two hexahdroxydIPhenyl residues; hydrolysis yielded glucose, gallic acid and ellagic acid

TL;DR: Medicarpin (3-hydroxy-9-methoxypterocarpan), an isoflavonoid phytoalexin characteristic of sweetclover, is metabolised by three fungi to afford products with decreased antifungal activity.

TL;DR: It was found that the lower acidity levels occurring in high temperature grapes at maturity are due to a changed pattern in acid breakdown rather than to reduced malic acid accumulation.

TL;DR: The prenylated isoflavone luteone has been isolated from healthy leaves of Lupinus albus and 11 other lupin species as discussed by the authors, and evidence was presented that this compound occurs as a leaf surface constituent.

TL;DR: The transferase activity is reversible and both chlorogenic acid and 5′- p -coumarylquinic acids are cleaved in the presence of CoA to form quinic acid and the corresponding hydroxycinnamyl CoA thioester.

TL;DR: In this paper, the in vitro glucosylation of hydroquinone carried out by the cell-free extract demonstrated that this enzymic reaction requires the presence of UDPG as a high energy donor of glucose.