METODE EKSTRAKSI ANTOSIANIN DARI KULIT BUAH SYZYGIUM CUMINI(L.) SKEELS SEBAGAI INDIKATOR ALAMI ASAM BASA

Muhammad Zulfajri, Muttakin Muttakin

Abstract


Dalam penelitian ini, ekstrak berupa zat warna dari kulit buah Syzygium cumini (L.) skeels
diekstraksi dengan menggunakan metode maserasi dan sokhletasi. Pelarut yang digunakan adalah
etanol yang mampu menarik ekstrak dari sampel dengan baik. Ekstrak yang diperoleh dari kedua
metode tersebut digunakan untuk melakukan pengujian suatu larutan asam dan basa sehingga
diperoleh hasil yang membuktikan bahwa ekstrak dari kulit buah Syzygium cumini (L.) skeels
mampu berperan sebagai indikator alami asam basa yang baik, ditandai dengan terbentuknya
warna hijau pada larutan basa sesaat setelah ditambahkan ekstrak. Dari kedua metode ekstraksi
ini diperoleh volume ekstrak yang sedikit lebih banyak yang dihasilkan oleh metode sokhletasi
dikarenakan seluruh ekstrak mampu ditarik oleh pelarut bila dibandingkan dengan metode
maserasi. Kedua metode ini memiliki kelebihan dan kelemahan masing-masing, namun tetap
menghasilkan ekstrak dari kulit buah Syzygium cumini (L.) skeels dengan kualitas yang sama
sebagai indikator alami asam basa.


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