WillisC is right. From Eur Food Res Technol (2008) 226:715–719
DOI 10.1007/s00217-007-0581-4
Alessandra Del Caro · Antonio Piga
Abstract An analytical study was carried out on
phenols in two Wg cultivars (Ficus carica L.), one
black and one green. Fresh fruits were peeled and
phenols were extracted separately from the peel and
the pulp. The extracts were subjected to HPLC-DAD
analysis, by monitoring at four wavelengths, 280, 316,
365 and 520 nm for catechins and benzoic acids,
hydroxycinnamic acids, Xavonols and anthocyanins,
respectively. Results showed that phenols are concentrated
almost exclusively in the peel, with the black
cultivar having the highest content. In particular, the
peel was rich in rutin, with amounts from 527 to
1,071 mg/kg (fresh basis) for green and black Wgs,
respectively. The peel of black Wgs showed an appreciable
content of cyanidin 3-O-rutinoside. The pulp of
both green and black cultivars contained only cyanidin
3-O-rutinoside, while the cyanidin 3-O-glucoside
was found only in the peel of the black Wgs. Chlorogenic
acid and another cinnamic acid were detected in
the peel of both cultivars, while benzoic acids and
catechins were not present.