Structural studies of a new acidic polysaccharide of apricot seeds

Abstract

This article reports the isolation and structural investigation of an acidic polysaccharide of the seeds of Prunus armeniaca (apricot) - a plant of commercial importance. The polysaccharide is composed of three sugars - mannose (50%), glucose (37.5%) and glucuronic acid (12.5%). The results of methylation analysis, partial depolymerisation, Smith degradation and NMR spectroscopic studies indicate a branched structure consisting of a straight chain of mainly alpha-(1 --> 3)mannan, which is interspersed with 4-O-(beta-D-mannopyranosyl)glucuronic acid residues. The side chain is bound to the alpha-mannan chain in the form of a trisaccharide of the glucose.

Insights into research on phytochemistry and biological activities of Prunus armeniaca L. (apricot)

“…A structural investigation of an acidic polysaccharide of the seeds of P. armeniaca by Banerjee and Bhatt (2007) revealed the presence of mannose (50%), glucose (37.5%), and glucuronic acid (12.5%). The sugar composition of 28 apricot cultivars obtained at unripened and ripened stages in France was examined and found to consist of saccharose (6.36 and 6.90 g/100 g), glucose (1.64 and 1.81 g/100 g), and fructose (0.53 and 0.56 g/100 g) at unripened and ripened stages, respectively (Aubert & Chanforan, 2007).…”

A comparative study of pectic polysaccharides from fresh and driedDendrobium officinalebased on their structural properties and hepatoprotection in alcoholic liver damaged mice

“…The signal at 5.25 ppm was assigned to α-Man, those at 4.9–5.0 ppm signified the presence of GlcAp, and the signals in the range from 4.8 to 4.9 belonged to β-Galp and β-Manp, respectively. 40,41 Due to the narrow chemical shift range in the 1 H NMR spectra, the peaks of Galp and GalAp (4.87–4.90 ppm) overlapped. 28 In addition, the signals at δ 4.60 and 4.37 were assigned to the β-Glcp and β-Xylp residues, respectively.…”

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“…are available in the market 85 . Chlorogenic acid, protocatechuic acid, narigenin -7glucoside, orchlorogenic acid, gallic, procumaric, caffeic, ferrulic acids, pruning, photocatechuic acid, procynadine B2, B3 and C1 [109] Limonene, terpinolene, myrecene, trans -2-heenol, linalool, geranial, α-terpineol, , 2 methylbutyric, γoctalectone,lactones, γ-decalactone, γ-dodecalactone, hexanal, C6 lipid peroxidation, β-ionone, E-2-noneal, αterpinolene, α (E, E)-farnesene, megastigma-4,6,8-triene [ 110,111,112] Ocinienol [117,9,118,119,120] CONCLUSIONS: More studies should be conducted to elucidate the molecular mechanism of interaction of various parts of these plant-based drugs with human body in different diseases. In the present study, we reviewed that Prunus armeniaca, is the worldwide deciduous plant which having manifold uses.…”