PENGARUH VARIASI SUHU DAN DURASI PENYIMPANAN TERHADAP KANDUNGAN VITAMIN C JERUK SULIKI (Citrus sinensis L.) DENGAN METODE TITRASI IODIMETRI

Dewi Nofita; Dirsa Jorenda; Amelia Ramadani

doi:10.51225/jps.v9i1.104

Authors

Dewi Nofita Akfar Dwi Farma Bukittinggi
Dirsa Jorenda Akademi Farmasi Dwi Farma Bukittinggi
Amelia Ramadani Akademi Farmasi Dwi Farma Bukittinggi

DOI:

https://doi.org/10.51225/jps.v9i1.104

Keywords:

Suliki orange, Citrus sinensis, vitamin C, iodimetry, storage temperature

Abstract

Suliki Orange (Citrus sinensis L.) represents a tropical fruit variety abundant in ascorbic acid, though its concentration undergoes changes throughout storage periods. The present investigation examines how temperature conditions and storage intervals influence vitamin C levels in Suliki oranges through iodimetric analysis. Fruit specimens underwent storage at two distinct temperature settings (ambient and refrigerated conditions) across varying durations of 1, 4, and 8 days. Preliminary qualitative analysis utilizing Fehling A and B reagents demonstrated color transformation to brownish-green, confirming vitamin C presence. Findings revealed that ambient temperature storage maintained vitamin C concentrations between 23.7-25.8 mg/100 g, peaking at day 4 (25.8 mg/100 g). During ambient storage spanning days 1-4, vitamin C levels rose from 25 mg/100 g to 26 mg/100 g. Contrastingly, refrigerated storage exhibited declining patterns from 25.20 mg/100 g (day 1) to 22.35 mg/100 g (day 4). These findings demonstrate that both temperature and storage intervals significantly impact vitamin C stability in Suliki oranges, with brief ambient storage periods showing superior vitamin C preservation or enhancement relative to refrigerated conditions.

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