PENGARUH KOPIGMENTASI TERHADAP STABILITAS WARNA ANTOSIANIN EKSTRAK KULIT TERUNG BELANDA (CYPHOMANDRA BETACEA SENDTN)
ABSTRACT: Copigmentation has
been suggested as a main color stabilizing mechanism of the anthocyanin. The
objectives of this research were to determine type and molar ratio of copigment
(catechol or tannin) to anthocyanin which most stabilize the color of
anthocyanin from epicarp extract of Terung Belanda (Cyphomandra betacea Sendtn)
during 40 days storage. Stability of
anthocyanin was evaluated from changes of anthocyanin concentration and color
retention during storage period and kinetic parameters. The initial anthocyanin
content from epicarp extract of Terung Belanda (Cyphomandra betacea Sendtn) was
0,31 mMol/L (0,20 mg/100g).
Copigmentation with catecholwas less effectiveto stabilizethe color of
anthocyanin, indicated by the concentrationof anthocyaninsat molar ratio 0:1,
50:1 and 100:1 which was not significantly different. Meanwhile, the color
retentionat pH 3,5 and kinetic reaction of antocianin at 65oC with molar ratio
50:1 stabilized the anthocyanin extract
of epicrap Terung Belanda (Cyphomandra betacea Sendtn) (color retention 44,35%,
k 0,141 and t½ 4,91 hours).
Copigmentation with tannin at molar ratio 100:1 was more effectiveto
stabilize the color of anthocyanin indicated by decreasing of concentration of
anthocyanins and color retention at pH3,5 after 40 days storage which were 0,10
mMol/L (69,70%) and 63,56%. Kinetics
parameter at 65oC(k) 0,063 and t½ 11,00 hours.
Keywords: anthocyanin,
catechol, copigmentation, Cyphomandra betacea Sendtn, tannin
Penulis: Herlina Wahyuni,
Tirza Hanum, Murhadi
Kode Jurnal: jppertaniandd170746
