Phytochemical and antioxidant properties of n-hexane, ethyl acetate, and n-butanol fraction from the stem bark of Zanthoxylum rhetsa (Roxb.) DC.

Penulis

  • Ghina Hasna Afifa Universitas Garut
  • Dhelitha Novia Khofifah Universitas Garut
  • Ragil Maulana Universitas Garut
  • Ruchiyat Ruchiyat Universitas Garut

DOI:

https://doi.org/10.52434/npcb.v1i1.42421

Kata Kunci:

Antioxidant, DPPH, phytochemical screening, stem bark, Zanthoxylum rhetsa

Abstrak

Panggal buaya (Zanthoxylum rhetsa (Roxb.) DC.) menjadi salah satu flora kekayaan alam Indonesia yang sangat luas pemanfaatannya. Kayunya umum digunakan sebagai bahan dasar furnitur dan buahnya dapat dijadikan sebagai bumbu masak ataupun dimakan langsung. Studi menyebutkan bahwa bagian kulit batang panggal buaya kaya akan kandungan senyawa alkaloid dan lignan. Penelitian ini bertujuan untuk menganalisis karakteristik fitokimia dari fraksi n-heksana, etil asetat, dan n-butanol kulit batang Z. rhetsa serta menguji aktivitas antioksidannya. Ekstrak metanol yang diperoleh dari tahapan maserasi difraksionasi secara bertingkat menggunakan pelarut n-heksana, etil asetat, dan n-butanol. Karakterisasi dilakukan menggunakan metode penapisan fitokimia juga spektroskopi FTIR (Fourier Transform Infrared) dengan pengujian aktivitas antioksidan menggunakan metode DPPH (1,1-difenil-2-pikrilhidrazil) pada λ=517 nm yang terlebih dahulu divalidasi menggunakan asam askorbat. Penapisan fitokimia meliputi pengujian alkaloid, flavonoid, tanin, steroid, dan terpenoid. Hasil penelitian menunjukkan bahwa fraksi n-heksana memiliki kandungan terpenoid, steroid, dan alkaloid sementara fraksi etil asetat dan n-butanol positif mengandung senyawa alkaloid, flavonoid, dan tanin. Evaluasi antioksidan juga menunjukkan bahwa fraksi etil asetat memiliki aktivitas antioksidan terbaik dan tergolong sebagai agen antioksidan yang sangat kuat dengan nilai IC50 sebesar 32,109 ppm. Perolehan data di atas membuktikan bahwa fraksi etil asetat kulit batang Z. rhetsa memiliki potensi sebagai agen antioksidan.

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Diterbitkan

2025-05-31