Potential of Anthocyanin from Young Fruit Skin of Elaeis Guineensis as a pH Sensor

DOI

10.2991/978-94-6463-148-7_33How to use a DOI?

Keywords

Anthocyanin; pH sensor; Elaeis guineensis; Oil palm fruit skin

Abstract

The increased consumer demand for the freshness and safety of food products would contribute to providing new technologies, which could function intelligently and could monitor the freshness of packaged foods. Chemical indicators are often used to monitor the freshness of food, but they have toxic properties and potential carcinogens. Therefore, an alternative method was needed to monitor the freshness of food. This work was aimed to explore the potential of young oil palm fruit skin (Elaeis guineensis), which was carefully designed on filter paper and exactly used as a pH indicator. The pH sensor was developed by simple immersion of filter paper into a solution of E. guineensis young fruit skin extract. Color change of the pH indicator was caused by the addition of various pH buffer solutions and was directly analyzed by colorimetry to obtain the color parameter values (L*, a*, b*, and ∆E). The results obtained that the total anthocyanin content was 0.512 ± 0.019 mg/100 g of fresh anthocyanin in E. guineensis sample. Meanwhile, values of total color change (∆E) were found in a linear range at pH (9–11), with a linear regression value at y = 3.7083x + 5.6983, and the value of regression coefficient at R² = 0.92021. Meanwhile, the repeatability value of the pH sensor was measured at OD 530 nm and OD 620 nm, at pH (4–12), and found a relative standard deviation value (RSD, n = 5) of (6.35–7.85) %. The developed pH sensor has a wide total color change and has a high potential to be used as a pH indicator. Furthermore, this research will be applied to freshness monitoring in packaging.

Copyright

© 2023 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Dedi Futra
AU  - Lenny Anwar
AU  - Fitri Aldresti
PY  - 2023
DA  - 2023/05/29
TI  - Potential of Anthocyanin from Young Fruit Skin of Elaeis Guineensis as a pH Sensor
BT  - Proceedings of the 12th International Conference on Green Technology (ICGT 2022)
PB  - Atlantis Press
SP  - 331
EP  - 338
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-148-7_33
DO  - 10.2991/978-94-6463-148-7_33
ID  - Futra2023
ER  -