Pembuatan Kertas Indikator Dari Ekstrak Daun Bayam Amaranthus Tricolor L.) Sebagai Indikator Asam Basa Alami Dalam Praktikum Kimia

ANU, Maria Yuliani (2021) Pembuatan Kertas Indikator Dari Ekstrak Daun Bayam Amaranthus Tricolor L.) Sebagai Indikator Asam Basa Alami Dalam Praktikum Kimia. Undergraduate thesis, Universitas Katolik Widya Mandira Kupang.

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Abstract

This type of research is a laboratory experimental design that includes a boiling point test, components of secondary metabolites including analysis of alkaloids, flavonoids, saponins, tannins, steroids, and triterpenoids, tested the effectiveness of the extract in identifying acid-base properties in various test solutions, tested the effectiveness of indicator paper in identifying acid-base properties in various test solutions, and tested the stability and sensitivity of the resulting indicator paper. The results obtained were: 1) Red spinach leaf extract had a boiling point of 96% pa methanol at 72°C, 96% technical ethanol solvent at 88°C, and 103°C in distilled water. 2) Red spinach leaf extract has components of secondary metabolites in 96% pa methanol solvents, namely alkaloids, flavonoids, tannins, saponins, and steroids, in technical ethanol solvents 96% namely alkaloids, saponins, and steroids, while in aquadest solvents are alkaloids, flavonoids, tannins, saponins, and triterpenoids. 3) Red spinach leaf extract in 96% pa methanol solvent and distilled water was effective in identifying acid- base properties in various test solutions, while 96% technical ethanol solvent was not effective in identifying acid-base properties. 4) Red spinach leaf indicator paper in 96% pa methanol solvent was effective in identifying acid-base properties while 96% technical ethanol solvent was not effective in identifying acid-base properties. 5) The stability of red spinach leaf indicator paper on 96% pa methanol solvent and 96% technical ethanol solvent was able to last for 10 days while the sensitivity of indicator paper on 96% pa methanol solvent was able to provide good and clear sensitivity until the 15th day while technical ethanol 96% did not show good and clear sensitivity.

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