Ekstraksi Pewarna Alami Dari Kelopak Bunga Rosella (Hisbiscus Sabdariffa) Pada Pembuatan Minuman Serbuk Instan Rosella
(Nature Coloring Extract from The Sepal Roselle Flower in The Making of Instant Roselle Drink Powder)
Oleh: Tuatul Mahfud
Program Studi Tata Boga, Ilmu Kesejahteraan Keluarga, Fakultas Teknik, Universitas Negeri Jakarta, 2008.
Operationally, this research is aimed to find out the making of Roselle nature coloring extract and the use of it in the making of instant Roselle drink powder that could be observed from the consumer acceptance of Roselle powder taste and color.
This researched use the experimental method which is conducted from February to July 2008. Roselle nature coloring extract is made by using spray drying technique with the additional decstrin filling amounted to 10%, 20 %, 30 % from the solution total volume. Moreover, the making process of instant Roselle drink powder is done by adding the nature coloring extract amounted to 4 gr, 6 gr and 8 gr for each 200 ml instant Roselle drink powder. Sixty respondents are involved in the organoleptic test.
The result shows that the making of Roselle coloring extract with the highest water level of 9, 64 % is found in the Roselle powder by adding10 % of decsrtrin filling. The lowest water level of 5, 85 % is found in the roselle powder with 30 % of decsrtrin filling. Meanwhile, the Roselle powder with 20 % decsrtrin filling, contained 7, 15% water level. Based on the result of the powder solubility test, the highest solubility level of 98, 26 % is obtained by adding 30 % decstrin filling into Roselle powder. Whilst the lowest solubility level of 91, 58 % is found in the Roselle powder with 20 % decstrin filling. It could be concluded that the additional of 30 % decstrin filling makes a big difference to the product Ph level compare to the additional of 10 % decstrin besed on Ph level test. The result measure of soluble solid matter total shows that the highest level of soluble solid mater of 39, 5 % is found in the coloring Roselle which had been added with 30 % decstrin. The lowest level of soluble solid mater of 5, 85 % is obtained in the Roselle powder by adding 10 % of decsrtrin filling. While the 29,0 level of soluble solid mater is found in the Roselle powder with 20 % decstrin filling
It can be seen that the result of organoleptic test shows the influence of the additional Roselle nature coloring toward consumer acceptance of Roselle instant drink powder’s taste and color. The consumers like most the color of Roselle drink powder with 8 % additional Roselle nature color. While the consumers like the taste most of Roselle drink powder with 4% additional Roselle nature color. As the organoleptic test with 60 responden can be decision that shows the most favorite Roselle drink powder is the one with 6 gr additional Roselle nature color.
Keyword: Roselle, extraction, nature coloring, instant drink powder.