ANALISIS KADAR VITAMIN C PADA KUBIS MERAH
(Brassica oleracea L. var capitata) YANG DIBUAT JUS
DENGAN VARIASI LAMA PENYIMPANAN
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Institusion
Sekolah Tinggi Ilmu Kesehatan Nasional
Author
Siska, Nur A'ini
Subject
RN Pharmacy and Pharmaceutical Mathematics
Datestamp
2022-04-14 06:33:34
Abstract :
Red cabbage is a vegetable that contains vitamin C which is a very powerful antioxidant. Usually people store vegetables and fruits in the refrigerator before consumption. The aim of this study was to determine the effect of red cabbage storage time and vitamin C levels in red cabbage (Brassica oleracea L. var capitata) which is juice made. The variation of storage time used was 1, 4, and 7 days with a storage temperature of 5oC. Qualitative test using FeCl3 and iodine reagent gives yellow color, Fehling A and Fehling B produce brick red sediment, and ammonium molybdate reagent gives blue color which means positive contains vitamin C. Quantitative test is carried out by UV-Vis spectrophotometry with a wavelength of 570.5 nm and operating time the 20th minute. The results of the quantitative test, the levels of vitamin C on the first day were 63.92 mg / 100 g red cabbage with% KV 0.2554%; on the fourth day was 63.32 mg / 100 g red cabbage with% KV of 0.2583%; and on the seventh day was 62.52 mg / 100 g red cabbage with% KV of 0.2611%. In the Tukey test, the p result is greater than 0.05, namely 0.831, which means that there is no significant difference in vitamin C levels or no significant difference on the first, fourth and seventh day.
Red cabbage is a vegetable that contains vitamin C which is a very powerful antioxidant. Usually people store vegetables and fruits in the refrigerator before consumption. The aim of this study was to determine the effect of red cabbage storage time and vitamin C levels in red cabbage (Brassica oleracea L. var capitata) which is juice made. The variation of storage time used was 1, 4, and 7 days with a storage temperature of 5oC. Qualitative test using FeCl3 and iodine reagent gives yellow color, Fehling A and Fehling B produce brick red sediment, and ammonium molybdate reagent gives blue color which means positive contains vitamin C. Quantitative test is carried out by UV-Vis spectrophotometry with a wavelength of 570.5 nm and operating time the 20th minute. The results of the quantitative test, the levels of vitamin C on the first day were 63.92 mg / 100 g red cabbage with% KV 0.2554%; on the fourth day was 63.32 mg / 100 g red cabbage with% KV of 0.2583%; and on the seventh day was 62.52 mg / 100 g red cabbage with% KV of 0.2611%. In the Tukey test, the p result is greater than 0.05, namely 0.831, which means that there is no significant difference in vitamin C levels or no significant difference on the first, fourth and seventh day.
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