"FermentCheck": Prototype of Smartphone App for pH Monitoring from Extract Hibiscus Flower
DOI:
https://doi.org/10.30742/ijremte.v3i1.28Keywords:
Monitoring pH, hibiscus flower extract, prototype, smartphoneAbstract
Monitoring pH is a critical process in various fields, including food science, agriculture, and home fermentation. While electronic pH meters are standard, natural indicators like hibiscus flower extract, which changes color across pH levels due to its anthocyanin content, offer an accessible and eco-friendly alternative. However, traditional visual color matching is highly subjective and prone to human error due to lighting and perception variations. This research presents the design and prototyping of "FermentCheck," a smartphone application developed to digitize and objectify pH monitoring using hibiscus extract. The system architecture, mapped via Use Case diagrams, establishes distinct functional workflows for Users to do simple measurement and Administrators to made calibration and model updates. The developed User Interface (UI) guides users through a streamlined process to capture a sample image and utilizing a back-end regression model to translate extracted color data into a precise pH value. The prototype demonstrates that smartphones can successfully bridge biochemical colorimetric reactions with mobile computing. By converting subjective visual assessments into quantifiable, trackable digital data, FermentCheck offers low-cost and portable analytical tool for fermentation monitoring.
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