PENGARUH PROPORSI TEPUNG DAUN BELUNTAS (Pluchea indica Less) DAN TEH HITAM TERHADAP SIFAT FISIKOKIMIA, SIFAT ORGANOLEPTIK, DAN AKTIVITAS ANTIOKSIDAN PRODUK MINUMAN
Abstract: Beluntas (Pluchea
indica Less) is a plant that has been used as vegetables and medicine herb in
Indonesia. Phytochemical compounds in beluntas leaves have antioxidant activity
to prevent free radical that may cause degenerative diseases. One of beluntas
utilization-product is functional beverage of beluntas leaves that substituted
black tea. This research aimed to determine the effect of beluntas leaves
powder and black tea proportion on physicochemical properties, senseory
properties, and antioxidant activity of beverage product. The reasearch design
used is randomized block design. Factor that will be researched is beluntas
leaves powder and black tea proportion in the amount of 100:0; 75:25; 50:50;
37.5:62.5; 25:75; 12.5:87.5; dan 0:100% (w/w). The parameters observed are
water content of beluntas leaves and black tea powders, phytochemical
identification; physicochemical properties including color, pH, titratable
acid, and turbidity; sensory properties including color, flavor, and taste;
antioxidant activity using DPPH method, total phenol, total flavonoid, and iron
ion reducing power. The results showed that the proportion of beluntas leaves
powder and black tea significantly affected on physicochemical properties,
senseory properties, and antioxidant activity of beverage product. Hue angle
value ranged from 9.67-80.50; chroma value ranged from 2.66-8,36; pH value
ranged from 6.04-6.74; titratable acid ranged from 14.24-64.92 mg chlorogenic
acid/100 mL infusion or 7.19-64.92 mg gallic acid/100 mL; turbidity value
ranged from 32.83-105.87 NTU; phenolic content ranged from 12.18-23.51 mg GAE/g
sample, flavonoid content range from 2.54-9.18 mg CE/g sample, DPPH scavenging
activity range from 14.95-29.60 mg GAE/g sample, dan iron ion reducing power
ranged from 17.98-22.44 mg GAE/g sample. Based on the effectiveness test, the
best treatment were beluntas leaves powder and black tea proportion in the
amount of 25:75% (w/w).
Penulis: Maria Olivia Halim,
Paini Sri Widyawati, Dwi Wibawa Budianta
Kode Jurnal: jppertaniandd151014
