Abstract :
ABSTRACT
Erika Nurjannah. B1610370. Non gluten biskuit purple sweet potato (Ipomoea
Batatas) flour with the addition of catfish (Clarias gariepinus) flour and ginger
(Zingiber officinale) extract. Supervised by Tiana Fitrilia and Dwi Aryanti
Nur?utami.
Biscuits are quite attractive food in Indonesia. The interest number of biscuits
reached 33,14% in 2014 to 2018. The present study aims to formulate Gluten-free
Biscuit from purple sweet potato with the addition catfish flour and ginger extract
to maintain daily Nutritions, especially calcium and protein. The study applied
Randomly Complete two-factorial design. The first factor is purple sweet potato
flour and catfish meal ratio (purple sweet potato flour: catfish meal) with three level
treatments 90%: 10%, 85%: 15%, and 80%: 20%. The second factor was the
addition of ginger extract with two level treatments 15% and 20%. The data
analyzed by Variance (ANOVA) and Duncan?s continued test with a 95%
confidence interval. The results of data analysis showed effect of flour comparison,
the addition of ginger extract, and the interaction of two factors influenced the
chemical, sensory, and hedonic properties of non gluten-free biscuits. The selected
biscuits formula were purple sweet potato flour : catfish flour 80% : 20% and ginger
extract 15 mL, contain 62,1% carbohydrate, 10,56% protein, 18,89% fat, 1,34%
ash, 7,11% moisture, with total energy of 371,56 kcal/100 gram, and high level of
calcium 230 mg/100 g. the present biscuit has 917.5 gf of HV with sensory test
show that it has brownies purple color, crunchy texture, sweet taste, and smell of
ginger. Hedonic test result the treatment of purple sweet potato flour : catfish flour
80% : 20% and ginger extract 15 mL showed the highest preferences value in
texture and aroma parameters.
Keyword: Gluten-free Biscuits, ginger extract, catfish flour, purple sweet potato
flour