Pengaruh Metode Ekstraksi terhadap Kadar Fenol dan Flavonoid Total, Aktivitas Antioksidan serta Antilipase Daun Jati Belanda (Guazuma ulmifolia)

Nuri Nuri, Endah Puspitasari, Mochammad Amrun Hidayat, Indah Yulia Ningsih, Bawon Triatmoko, Dewi Dianasari

Abstrak


Daun Guazuma ulmifolia telah digunakan secara tradisional untuk antiobesitas. Aktivitas antiobesitas dipengaruhi oleh kandungan senyawa bioaktif. Ekstraksi adalah langkah utama untuk mendapatkan senyawa bioaktif. Metode dan pelarut ekstraksi merupakan faktor penting untuk menghasilkan ekstrak dengan jumlah kandungan senyawa aktif yang tinggi. Penelitian ini bertujuan untuk menentukan kadar fenol dan flavonoid total dari ekstrak etanol, rebusan, dan infusa daun G. ulmifolia serta untuk menentukan aktivitas antioksidan serta antilipase. Metode Folin-Ciocalteu digunakan untuk menentukan kadar fenol total, sedangkan penentuan kadar flavonoid total dilakukan menggunakan uji kolorimetri aluminium klorida. Aktivitas antioksidan ditentukan dengan metode 2,2-difenil-1-pikrillhidrazil (DPPH), dan aktivitas antilipase dikuantifikasi secara kolorimetri berdasarkan pelepasan p-nitrofenol dari substrat p-nitrofenil butirat (p-NPB). Hasil penelitian menunjukkan bahwa rebusan memiliki rendemen tertinggi (10,50%). Sebaliknya, ekstrak etanol menunjukkan total kandungan fenolik tertinggi (67,761 ± 1,811 mg GAE/g ekstrak)  dan total kandungan flavonoid tertinggi (124,643 ± 1,033 mg QE/g ekstrak). Ekstrak yang sama juga menunjukkan aktivitas antioksidan dan aktivitas antilipase tertinggi (IC50 berturut-turut 6,544 ± 0,271 μg/mL dan 307,280 ± 21,430 μg/mL). 


Kata Kunci


jati belanda; Guazuma ulmifolia; metode ekstraksi; antioksidan; antilipase.

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Referensi


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DOI: https://doi.org/10.25077/jsfk.7.2.143-150.2020

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