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Betula alba L.

Betula alba L.

Methyl syringate was isolated from the essential oil of Betula alba as an aflatoxin production inhibitor. It inhibited aflatoxin production of Aspergillus parasiticus and Aspergillus flavus with IC50 values of 0.9 and 0.8 mM, respectively, without significantly inhibiting fungal growth. Methyl syringate reduced mRNA levels of genes (aflR, pksA, and omtA) encoding proteins required for aflatoxin biosynthesis. Methyl gallate, methyl 3,4,5-trimethoxybenzoate, and methyl 3-O-methylgallate inhibited both aflatoxin production and fungal growth of A. parasiticus and A. flavus. However, their acids and syringic acid did not inhibit aflatoxin production and growth of A. parasiticus significantly, although gallic acid inhibited aflatoxin production of A. flavus with selectivity. The 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity of methyl syringate was much weaker than that of gallic acid.  3,4′-Dihydroxypropiophenon-3-β-d-glucopyranosid from Betula alba.

Products from  Betula alba L.

  1. Cat.No. Product Name CAS Number COA
  2. BCN5524 Betulinic acid 472-15-1 PDF
  3. BCN5528 Betulin 473-98-3 PDF
  4. BCN1249 Betulinaldehyde 13159-28-9 PDF
  5. BCN5792 Betulin palmitate 582315-55-7 PDF
  6. BCN3072 2alpha-hydroxy-3beta-acetyloxy-betulic acid 1163728-89-9 PDF
  7. BCN4438 Betulin caffeate 89130-86-9 PDF