Show legend Show as text

Structure type: oligomer ; 969 [M-H]-
Compound class: triterpenoid glycoside
Contained glycoepitopes: IEDB_115136,IEDB_136105,IEDB_140630,IEDB_142488,IEDB_146664,IEDB_225177,IEDB_423153,IEDB_885823,IEDB_983931,SB_192

• Article ID: 11549
  Junkuszew M, Oleszek W, Jurzysta M, Piancente S, Pizza C "Triterpenoid saponins from the seeds of Amaranthus cruentus" - Phytochemistry 49(1) (1998) 195-198
  

  Four new saponins, 3-β-O-[α-L-rhamnopyranosyl(1 → 3)-β- glucuronopyranosyl]-2β,3β-dihydroxyolean-12-en-28-oic acid 28-O-[β-D- glucopyranosyl] ester, 3-β-O-[α-L-rhamnopyranosyl(1 → 3)-β- glucuronopyranosyl]-2β,3β,23-trihydroxyolean-12-en-728-oic acid 28-O-[β- D-glucopyranosyl] ester, 3-β-O-[α-rhamnopyranosyl(1 → 3)-β- glucuronopyranosyl]-2β,3β-dihydroxy-23-oxoolean-12-en-28-oic acid 28-O- [β-D-glucopyranosyl] ester, 3-β-O-[β-glucuronopyranosyl]-2β,3β- dihydroxy-30-norolean-12,20(29)-diene-23,28-dioic acid 28-O-[β-D- glucopyranosyl] ester, together with known chondrillasterol (5α-stigmasta- 7,22-dien-3β-ol) and its 3-O-glucopyranoside have been isolated from seeds of Amaranthus cruentus. The structures were established by LSI mass spectrometry and NMR spectroscopy.

  seeds, triterpenoid saponins, Amaranthaceae, Amaranthus cruentus

  Publication DOI: 10.1016/S0031-9422(97)00904-7
  Journal NLM ID: 0151434
  Publisher: Elsevier
  Institutions: Department of Biochemistry, Institute of Soil Science and Plant Cultivation, Pulawy, Poland, Centro Interdipartimentale di Chimica Bioogia e Tecnologia Farmaceutiche, University of Salerno, Italy
  Methods: 13C NMR, 1H NMR, EI-MS, TLC, LSI-MS, extraction, CC, TCL, DEPT, COSY, HETCOR
  
   
  
  Amaranthus cruentus
  CSDB ID 63578 (all data & tools)

Show legend Show as text

Structure type: oligomer
Compound class: saponin glycoside
Contained glycoepitopes: IEDB_115136,IEDB_136105,IEDB_140630,IEDB_142488,IEDB_146664,IEDB_225177,IEDB_423153,IEDB_885823,IEDB_983931,SB_192

• Article ID: 11860
  Oleszek W, Junkuszew M, Stochmal A "Determination and toxicity of saponins from Amaranthus cruentus seeds" - Journal of Agricultural and Food Chemistry 47(9) (1999) 3685-3687
  

  The concentrations of four triterpene saponins present in amaranth seeds were determined with high-performance liquid chromatography. It was shown that the total concentration of saponins in seeds was 0.09-0.1% of dry matter. In germinating seeds an increase in concentration to 0.18% was observed after 4 days of germination, which remained stable for the next 3 days and later dropped to 0.09%. Highly purified extracts from the seeds were tested for their toxicity against hamsters. The hydrophobic fraction obtained by the extraction of seeds with methylene chloride showed no toxicity; the behavior of tested animals was similar to that of the group given an equivalent dose of rapeseed oil. A crude saponin fraction, containing ~70% of pure saponins in the matrix, showed some toxicity, the approximate lethal dose was calculated as 1100 mg/kg of body weight. It is concluded that low contents of saponins in amaranth seeds and their relatively low toxicity guarantee that amaranth-derived products create no significant hazard for the consumer.

  toxicity, concentration, saponins, Amaranthus cruentus, Amaranth

  NCBI PubMed ID: 10552705
  Publication DOI: 10.1021/jf990182k
  Journal NLM ID: 0374755
  Publisher: American Chemical Society
  Institutions: Department of Biochemistry, Institute of Soil Science and Plant Cultivation, ul. Czartoryskich 8, 24-100 Pulawy, Poland
  Methods: HPLC, statistical analysis, toxicity assays, acylation
  
   
  
  Amaranthus cruentus
  CSDB ID 63274 (all data & tools)