Variation in the composition of the heartwood flavonoids of Prunus avium by on‐column capillary gas chromatography

Abstract

A fast and simple extraction procedure, coupled with on-column gas chromatography, has been developed in order to investigate the relative amounts of flavonoids in individual trees within several homogeneous populations of Prunus avium. Eight known flavonoid aglycones were isolated from the heartwood of P. avium and multivariate analysis was employed in order to characterise population groups.

Changes in phenolic composition of red wines aged in cherry wood

“…More recently, two already cited studies devoted to woods employable in cooperage (Sanz et al, 2010;Sanz, Fern andez de Sim on, Esteruelas, et al, 2012) identified eriodictyol, naringenin, hesperetin and pinocembrin in seasoned and light toasted cherry wood, but not sakuranetin. The occurrence of this latter compound, whose UV and (MÀH) features are the same as its isomer isosakuranetin, was unambiguously ascertained by fortification experiments and confirms the findings of other researchers who indagued on P. avium heartwood (McNulty et al, 2009;Vinciguerra, Luna, Bistoni, & Zollo, 2003). Three further compounds (compounds #10, #11 and #16) displayed UV spectrum and MS fragmentation referable to flavanone aglycones (Fabre, Rustan, de Hoffmann, & QuetinLeclercq, 2001) and were tentatively assigned accordingly.…”

“…Chrysin was the only flavone found in our extracts at quite an high concentration (around 70 mg/g). This compound has been described as one of the main flavonoid present in recently felled P. avium heartwood (Nagarajan & Parmar, 1977;Vinciguerra et al, 2003), at amounts of about 200 mg/g (Hasegawa, 1957). On the other hand, other researchers did not report chrysin among the flavonoids extracted from seasoned or toasted cherry wood (Sanz et al, 2010), suggesting the natural variability of the wood as raw material for cooperage.…”

Alternative Woods in Enology: Characterization of Tannin and Low Molecular Weight Phenol Compounds with Respect to Traditional Oak Woods. A Review

“…Alternative woods Nat (NS) Q. pyrenaica (I) [27] 2522 Q. pyrenaica (G) [23] 3940 ns ns ns ns 3940 ns ns ns ns ns ns ns 3940 Q. pyrenaica (H) [23] 20500 ns ns ns ns 20500 ns ns ns ns ns ns ns 20500 Robinia p. (A) [17] 2. 76…”

Comprehensive two-dimensional gas chromatography, retention indices and time-of-flight mass spectra of flavonoids and chalcones

“…TMS derivatives of flavonoids are stable, and give informative fragmentation ions under positive electron ionization (EI). The successful separation of TMS derivatives of flavonoids by GC followed by their mass spectrometric identification (GC-MS) has been reported by several researchers [19][20][21]. The ease of preparation and their excellent GC properties has led to an increased use of trimethylsilyl (TMS) derivatives for polar molecules for many compounds [22][23][24][25][26].…”