Table 1 Distribution of flavonoids in Cajanus cajan

Flavones

Apigenin

5,7,4′-trihydroxyflavone

Leaves

Fu et al. (2008); Zu et al. (2006); Wei et al. (2013a); Wei et al. (2013b)

Vitexin

Apigenin 8-C-glucoside

Leaves

Fu et al. (2007); Wu et al. (2009)

Isovitexin

Apigenin 6-C-glucoside

Leaves

Fu et al. (2007)

Apigenin-6,8-di-C-α-ι-arabinopyranoside

Leaves

Wei et al. (2013b)

Luteolin

5,7, 3′,4′-tetrahydroxyflavone

Leaves

Fu et al. (2008); Fu et al. (2006); Wei et al. (2013b); Zu et al. (2006)

Orientin

Luteolin 8-C-glucoside

Leaves

Wei et al. (2013b); Wu et al. (2009)

Isoflavones

Biochanin A

5,7-Dihydroxy-4′-methoxyisoflavone

Leaves & roots

Duker-Eshun et al. (2004); Wei et al. (2013a)

Cajanin

5, 2′,4′-Trihydroxy-7-methoxyisoflavone

Seed & etiolated stems

Dahiya et al. (1984); Ingham (1976) Dahiya (1987)

4′-O-methylcajanin

5,2′-dihydroxy-7,4′dimethoxyisoflavone

Etiolated stems

Ingham (1976)

Cajaisoflavone

Root bark

Bhanumati et al. (1979a)

Formononentin

7-hydroxy-4′methoxyisoflavone

Etiolated stems & leaves

Ingham (1976); Wei et al. (2013a)

Genistein

5,7,4′-trihydroxyisoflavone

Roots/root bark & etiolated stems

Bhanumati et al. (1979b); Duker-Eshun et al. (2004); Ingham (1976)

2′-Hydroxygenistein

5,7,2′,4′-tetrahydroxyisoflavone

Roots, etiolated stems

Duker-Eshun et al. (2004) Ingham (1976)

Isogenistein 7-glucoside

5,7,2′-trihydroxyisoflavone 7-0-β-D-glucoside

Root bark

Bhanumati et al. (1979b)

Flavonols

Quercetin

3,5,7,3′,4′-pentahydroxyflavone

Leaves & pod surface

Green et al. (2003); Zu et al. (2006)

Isoquercitrin

Quercetin 3-β-D-glucoside

Pod surface

Green et al. (2003)

3-O-Methylquercetin

5,7,3′,4′ -Tetrahydroxy-3-methoxyflavone

Pod surface

Green et al. (2003)

Isorhamnetin 

3′-Methoxyquercetin

Leaves

Zu et al. (2006)

Anthocyanidins

Chrysanthemin

Cyanidin 3-glucoside

Location not reported

Lai et al. (2012)

Peonidin 3-glucoside

Location not reported

Lai et al. (2012)

Flavanones

Cajaflavanone

Root & root bark

Dahiya (1991); Bhanumati et al. (1978)

Naringenin

5,7,4′-trihydroxyflavanone

Leaves

Wei et al. (2013b)

Pinostrobin

5-hydroxy-7-methoxyflavanone

Leaves

Wei et al. (2013a); Wei et al. (2013b); Wu et al. (2009); Ashidi et al. (2010); Duker-Eshun et al. (2004); Kong et al. (2010); Nicholson et al. (2010)

Isoflavanone

Cajanol

5,4′-dihydroxy-7,2′-dimethoxyisoflavanone

Roots, stem/etiolated stems, leaves & seed

Wei et al. (2013a); Liu et al. (2011); Luo et al. (2010); Dahiya et al. (1984); Duker-Eshun et al. (2004); Marley and Hillocks (2002); Ingham (1979, 1976) Dahiya (1987)

Cajanone

Roots

Dahiya (1991); Preston (1977)

2′-O-Methylcajanone

Root bark

Bhanumanti et al. (1979)

Chalcone

Pinostrobin chalcone

2′,6′-Dihydroxy-4′-methoxychalcone

Leaves

Cooksey et al. (1982); Wei et al. (2013b)