pH Indicator from Kamias (Averhoa bilimbi L.) Flower Extract. - 4 0 16; Shirley R. Jusayan; 5 WVSU Research Journal. 4 (1) : June 2015. pp. 30-40
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.
Keywords: 2 -- 0; 6; Kamias;Anthocyanin. -- pH indicator; 20; 2