PENETAPAN KADAR VITAMIN C PADA BUAH NANGKA (Artocarpus heterophylla) MENTAH, REBUS DAN GORENG SECARA SPEKTROFOTOMETRI UV-VIS

YULIANINGTYAS, Debora Arwinda (2016) PENETAPAN KADAR VITAMIN C PADA BUAH NANGKA (Artocarpus heterophylla) MENTAH, REBUS DAN GORENG SECARA SPEKTROFOTOMETRI UV-VIS. Skripsi thesis, Universitas Setia Budi Surakarta.

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Abstract

Ascorbic acid is a compound acidic with the formula empirical C6H8O6. Ascorbic acid had a role as antioxidant and serves important in the formation of collagen, help the absorption of iron, and helping guard capillary, bone, and teeth, also improve endurance and had a role in the formation of blood cells and tissues of the body. The need for ascorbic acid could be met of vegetables and fruits. Ascorbic acid there are also on jackfruit. Sample in this research using jackfruit ( Artocarpus heterophylla ) with 3 treatment that is raw (fresh), boiled and fried. The method that used to detect levels of ascorbic acid in sample is by color complex of iodine-starch based of principles retitration reaction with ascorbic acid as a reductant of I2. Absorbance I2 at the beginning reduced by residual I2 so that we obtained the I2 that reacted with ascorbic acid. The final absorbance then inserted into the linear regression equation then we obtained Creg to be converted to the calculation of the content of ascorbic acid. The result show difference of each treatment. Contents of ascorbic acid in a sample of raw jackfruit 0,77% ⁄ , sample levels poached jackfruit 0,10% ⁄ , while contents of fried jackfruit is not detected due to the effect of absorption of ascorbic acid obtained under limit of quantitation. Based on the results can be seen that ascorbic acis can be influenced by different treatment (temperature warming). Keywords: ascorbic acid, spectrophotometry uv-vis, jackfruit.

Item Type: Thesis (Skripsi)
Uncontrolled Keywords: ascorbic acid, spectrophotometry uv-vis, jackfruit.
Subjects: R Medicine > RS Pharmacy and materia medica
Divisions: Fakultas Farmasi > Prodi S1 Farmasi
Depositing User: Tifany Nur Arfiana
Date Deposited: 30 Sep 2019 02:21
Last Modified: 30 Sep 2019 02:21
URI: http://repo.setiabudi.ac.id/id/eprint/1338

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