Exploring Plant Species in Vietnam for the Production of pH Indicator Paper
Purple cabbage, turmeric, magenta, amaranth, and red beet contain colour anthocyanins. These colours change according to pH environments. This research aims to explore the potential of utilizing various plant species, such as purple cabbage, turmeric, magenta, amaranth, and red beet, to develo...
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| Những tác giả chính: | , , , |
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| Định dạng: | Journal article |
| Ngôn ngữ: | English |
| Được phát hành: |
2024
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| Những chủ đề: | |
| Truy cập trực tuyến: | https://scholar.dlu.edu.vn/handle/123456789/3339 |
| Các nhãn: |
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| Thư viện lưu trữ: | Thư viện Trường Đại học Đà Lạt |
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| Tóm tắt: | Purple cabbage, turmeric, magenta, amaranth, and red beet contain colour anthocyanins. These
colours change according to pH environments. This research aims to explore the potential of
utilizing various plant species, such as purple cabbage, turmeric, magenta, amaranth, and red beet,
to develop pH indicator paper. The colour solutions of these plants were extracted with deionized
water. The extracted solutions were analyzed by IR spectra and UV-Vis spectra. The peak of OH,
C=O, and C-O in IR spectra changed in alkaline, neutral, and acidic environments, respectively.
The maximum absorption wavelengths of the extracted solutions in UV-Vis spectra were 533 nm
and 600 nm in alkaline and neutral environments, respectively. The pH indicator paper was created
by impregnating plain white computer paper with extract solutions to achieve uniform colouration.
These prepared pH indicator papers were used to detect the pH of household chemicals, including
milk, soap, toothpaste, and various fruits and vegetables. The study demonstrates that these plant
species exhibit excellent sensitivity to different pH values, possess good durability, and remain
unaffected by environmental factors. The developed pH indicator paper holds promising practical
applications for testing the pH of diverse chemicals. In this study, the pH indicator paper was
employed to determine the acidity or alkalinity levels of commonly found household items,
including fruits, beverages, and cleaning solutions. The results highlight the versatility and
convenience of utilizing plant-based pH indicator paper for monitoring pH variations in daily life
applications. |
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