Fullerene Journal of Chemistry
Vol 10 No 2 (2025): Fullerene Journal Of Chemistry

Quantitative Determination of Ascorbic Acid Content in Two Varieties of Bird’s Eye Chili (Capsicum frutescens L.) using UV-Vis Spectrophotometry

Howan, Dian (Unknown)
Saiya, Abdon (Unknown)
Pongoh, Emma (Unknown)



Article Info

Publish Date
30 Aug 2025

Abstract

This study quantified and compared the ascorbic acid content in green and red bird's eye chili (Capsicum frutescens) using UV-Vis spectrophotometry. The method was optimized by determining the maximum wavelength of ascorbic acid in an acid-stabilized solution, found to be 231 nm. A calibration curve was constructed with standard solutions (25-100 ppm), yielding a linear equation y = 0.0514x + 0.6032 (R² = 0.9361). Sample extracts were prepared and analysed in triplicate at this wavelength. The results demonstrated a significant difference in ascorbic acid concentration between the two varieties. The red chili exhibited a higher concentration of 34.39 ppm in the measured solution, corresponding to 0.90% (b/b) of the fresh weight. In contrast, the green chili contained 23.95 ppm (0.60% b/b). This indicates a 50% higher ascorbic acid content in the mature red fruit. The study concludes that ripening significantly enhances the vitamin C content in bird's eye chili, and the red variety is a nutritionally superior source. The validated method proved effective for the quantitative analysis of ascorbic acid in complex food matrices.

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Journal Info

Abbrev

fulerene

Publisher

Subject

Chemistry

Description

Fullerene Journal Of Chemistry is an chemistry indonesian journal presented by chemistry department, State University of ...