2019
DOI: 10.20885/ijca.vol2.iss1.art5
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Ekstraksi Kembang sepatu (Hibiscus Rosa Sinensis L) Menggunakan Pelarut Metanol dengan Metode Sokletasi untuk Indikator Titrasi Asam Basa

Abstract: Kembang sepatu merupakan tanaman hias yang tumbuh sepanjang masa dan banyak terdapat di daerah tropis. Ekstrak kembang sepatu diketahui dapat menunjukan hasil perubahan warna yang spesifik terhadap larutan asam maupun basa. Sifat ini dapat diterapkan sebagai indikator alami pengganti indikator sintetis yang harganya cukup mahal. Penelitian ini bertujuan untuk mengekstrak kembang sepatu kemudian memvalidasi penggunaan ekstrak tersebut sebagai indikator pada titrasi asam basa dengan pembanding indikator fenolfta… Show more

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Cited by 6 publications
(3 citation statements)
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“…[8][9][10] To date, more than 540 types of anthocyanins can give blue, red, and purple colors. 11 During the maceration process, temperature and storage can damage anthocyanin pigments, although their degradation is not affected by oxygen but is strongly influenced by temperature accumulation. 5 The opening of the ring and the degradation of anthocyanins are factors causing color changes.…”
Section: Resultsmentioning
confidence: 99%
“…[8][9][10] To date, more than 540 types of anthocyanins can give blue, red, and purple colors. 11 During the maceration process, temperature and storage can damage anthocyanin pigments, although their degradation is not affected by oxygen but is strongly influenced by temperature accumulation. 5 The opening of the ring and the degradation of anthocyanins are factors causing color changes.…”
Section: Resultsmentioning
confidence: 99%
“…Based on the results of interviews with five teachers and laboratory workers of a high school in Bogor City said that in acid-base learning, there are usually experiments in the form of titration using indicators of phenolphthalein and methyl orange (Mundriyastutik et al, 2021). Using such synthesis indicators is still relatively expensive (Riniati, Sularasa, & Febrianto, 2019) and harmful to the environment and health (Fitri & Fikroh, 2021). Therefore, it is necessary to conduct studies on natural chapters that can potentially be used as natural indicators to replace these synthetic indicators.…”
Section: Introductionmentioning
confidence: 99%
“…Beberapa penelitian terdahulu telah membahas banyaknya bahan alam yang berpotensi digunakan sebagai indikator alami asam basa diantaranya pembuatan indikator alami pada buah lakum (Apriani et al, 2016), bunga telang (Ramdan et al, 2017), mahkota bunga ketepeng cina (Khairunnisa et al, 2017), pucuk daun pucuk merah (Sukemi et al, 2018), umbi buah bit (Adhni & Asngad, 2018), bawang merah (Virliantari et al, 2018), daun jati muda (Wibowo & Rahayu, 2017), kembang sepatu (Riniati et al, 2019), bunga pacar air (Wijayadi et al, 2020), kulit manggis (Kurniawati, 2020), kulit kopi (Wati & Hasby, 2021). Maka peneliti melakukan riset pendahuluan guna menentukan indikator alami apa saja yang akan dimuat pada instrumen yang akan dikembangkan.…”
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