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pH Indicator from Kamias (Averhoa bilimbi L.) Flower Extract. 6 6 - - - - - - - - . - . - 0 . - . - 0 .

ABSTRACT : The acidic or basic nature of materials is usually determined using pH meter and commerciallt-sold or synthetic indicating means. In this study, an eco-friendly pH indicator was prepared from the aqueous and ethanolic extract of kamias (averrhoa bilimbi L.) flowers containing anthocyanin pigment. TheKamias pH indicator paper was calibrated using buffer solutions pH O to 14 to come up with a colored chart. This served as reference in the subsequent effectiveness and acceptability tests conducted of the product. The indicator produced showe a highly acceptable response from the respondents provingthat it can be a good alternative to commercially - sold pH indicating means. The shelf-life test also revealed taht it could withstand the storage time of 3 months without losing its effectivity. These finding have significsnt implications to further refine the product and prolong its storage time,and consequently, the production of Kamias pH indicator paper.





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ISSN: 2 = =

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Nat. Bib. No.: 2

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Kamias;Anthocyanin. ------pH indicator.----

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