UTILIZATION OF DRAGON FRUIT PEEL EXTRACT FOR THE MANUFACTURE OF DYES IN UREA FERTILIZERS

Abstract

ABSTRACT

Dragon fruit skin contains anthocyanin compounds that can function as natural
dyes. Anthocyanins can be used in a number of food products and are safe to use.
as dye fertilizer Which made from base organic. Study This was carried out to
make urea fertilizer dye products from dragon fruit skin extract with variations in
citric acid concentration and maceration time. Dye fertilizer is used as a marker
between dye fertilizer urea subsidy And non subsidy. Objective from study This
that is to utilize dragon fruit skin extract as a dye in urea fertilizer. The
concentration of acid citric Which used is 12%, 14%, 16%, 18% And 20%. As
well as variation time
maceration Which used that is 60, 72, 80, 92, And 104 O'clock. Results study
show that variation concentration sour citric And time maceration influence
quality fertilizer dye produced. The best results obtained were at a citric acid
concentration of 20% and a maceration time of 104 hours, with a pH value of 1.54,
Viscosity with a value of 1.53, Specific Gravity with a value of 1.052, soluble in
water, the resulting color strength is high, but the urea fertilizer dye has not shown
stability to temperatures of 30 o C and time storage 10 day. Matter This show
concentration Which best has met PT.PIM specifications.

Keywords: Sour citric, anthocyanin, dye fertilizer urea, time maceration.