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The Effect of pH on the Stability of Anthocyanin Extract in Butterfly Pea<br />

Flower (Clitoria ternatea L.)<br />

Ezza Amalia Binti Kamaruzan<br />

Supervisor: Dr. Nurmahani binti Datuk Mohd Maidin<br />

Bachelor of Food Science (Food Technology)<br />

School of Food Science and Technology<br />

Butterfly pea flower (Clitoria ternatea L.) commonly known as “Bunga telang” has high<br />

potential used as natural food colouring due to their attractive colours. Blue colours are<br />

uncommon in nature and extremely difficult to obtain in foods due to its poor stability at<br />

pH 7 in food. This study is aimed to evaluate the stability of anthocyanins extracts under<br />

different pH (4-10). The extracts will be extracted using acidified ethanol, acid<br />

hydrochloric and distilled water and will be stored at 45°C for 14 days. Upon storage, the<br />

extract will be analysed for TPC, TA, and DPPH method. Chromaticity parameters will be<br />

evaluated for lightness, chroma and hue. The acidic butterfly pea extract is expected to<br />

show stability than those in alkaline. As a conclusion, anthocyanins from Bunga telang<br />

are a promising source of natural food colourant.<br />

1320 | UMT UNDERGRADUATE RESEARCH DAY

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