JURNAL KIMIA SAINS DAN APLIKASI
Vol 21, No 3 (2018): Volume 21 Issue 3 Year 2018

Comparative Test of Color Stability between Betalain Pigments of Red Dragon Fruits and Anthocyanin Pigments from Tamarillo Fruit at Various pH

Yelfira Sari (Universitas Islam Riau Pekanbaru, Riau)
Adlis Santoni (Universitas Andalas Padang, Sumatera Barat)
Elisabet Elisabet (Universitas Andalas Padang, Sumatera Barat)

Article Info

Publish Date
31 Jul 2018

Abstract

Betalains and anthocyanins are classes of natural and water soluble pigments. Now days, these pigments have been developed as a replacement colouring agents. One of betalain resource is dragon fruit and anthocyanin resource is tamarillo. These pigments are relative unstable in some condition, one of them is pH. This research aim is to determine stability of betalain and anthocyanin pigments by pH parameter. These pigments can be isolated by macerated methods, technically processed by chopping the fruit and than soaking in ethanol for ± 24 h. These extracts were condensed by rotary evaporator. These extracts were analysed by ultraviolet-visible spectrophotometer at wavelength (λ) 200-800 nm. The absorption spectrum showed two major absorption peaks at 269 nm and 536 nm for betalain and 531 nm for anthocyanins. The result showed the optimal pH for betalain stability was at pH 5 and pH 3 for anthocyanin

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Journal Info
JURNAL KIMIA SAINS DAN APLIKASI
Website

Abbrev

ksa

Publisher

Universitas Diponegoro

Subject

Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering

Description

urnal Kimia Sains dan Aplikasi (p-ISSN: 1410-8917) and e-ISSN: 2597-9914) is published by Department of Chemistry, Diponegoro University. This journal is published four times per year and publishes research, review and short communication in field of ...