PENGARUH KONSENTRASI NATRIUM METABISULFIT DAN LAMA PERENDAMAN TERHADAP KARAKTERISTIK BUBUK BUNGA KENIKIR (Tagetes erecta L.)

Abstract

Marigold powder can be used as natural orange dyes extract of marigold powder contain ?-carotene. The aim of this research was to investigate the effect of sodium metabisulfite (Na2S2O5) concentration and soaking time on the characteristics of marigold flower powder and determine the best treatment of the concentration of sodium metabisulphite (Na2S2O5) and soaking time to produce powdered marigold flowers. This research used factorial randomized block design with 2 factor experiments. The first factor is the concentration of sodium metabisulfite (Na2S2O5) which consists of 3 levels: 2000, 2500, and 3000 ppm. The second factor is the soaking time which consists of 3 levels: 10, 20, and 30 minutes. The results of research showed that the treatment of sodium metabisulfite (Na2S2O5) concentration take effect on water content, total carotenoid levels, brightness (L*), yellowish level (b*), and sulfite residue levels, but no effect to the level of redness (a*). The treatment of soaking time take effect on the levels of sulfite residues but no effect on water content, total carotenoid levels, brightness level (L*), yellowish level (b*), and redness level (a*). Soaking treatment in sodium metabisulfite (Na2S2O5) solution with a concentration of 2500 ppm and soaking time of 10 minutes, is the best treatment to produce marigold flower powder with the characteristics of water content 11,40%, total carotenoid levels of 18.91%, brightness level (L*) 44.19, redness level (a*) 63.80, yellowish level (b*) 56.86, and sulfite residue levels of 182.40 ppm.
 Keywords : Tagetes erecta L, sodium metabisulfite, carotenoid, color.