SKRINING FITOKIMIA DAN UJI AKTIVITAS ANTIOKSIDAN EKSTRAK BIJI ADAS (Foeniculum vulgare) MENGGUNAKAN METODE DPPH ABSTRAK Telah dilakukan penelitian tentang skrining fitokimia dan uji aktivitas antioksidan ekstrak biji adas. Tujuan dari penelitian ini yaitu melakukan skrining fitokimia untuk mengetahui kandungan senyawa alkaloid, triterpenoid dan steroid, flavonoid, tannin, saponin dan menetukan aktivitas antioksidan dari ekstrak biji adas. Skrining Fitokimia untuk alkaloid ditentukan dengan menggunakan pereaksi Mayer, Dregendorff, Wagner. Triterpenoid dan steroid ditentukan menggunakan Mg bubuk. Senyawa tannin ditentukan dengan larutan FeCl3 1%. Senyawa saponin ditentukan menggunakan aquades. Ekstrak biji adas diperoleh dengan metode soxhletasi menggunakan pelarut petroleum eter dan uji aktivitas antioksidan menggunakan metode 1-1-difenil-2-pikrihidrazil (DPPH). Hasil penelitian menunjukan kandungan senyawa kimia biji adas positive mengandung senyawa falvonoid, tannin dan saponin, sedangkan untuk senyawa alkaloid, triterpenoid dan steroid memberikan hasil yang negatif. Aktivitas antioksidan dengan 1000; 2000; 3000; 4000; 5000 ppm, memberikan hasil berturut-turut yaitu 48.99 %, 33.92 %, 5.93 %, 21.23 %, 6.40 %. Aktivitas antioksidan biji adas tertinggi terdapat pada konsentrasi 1000 ppm dengan hasil 48.99 %. Biji adas memiliki persen aktivitas antioksidan yang baik, sehingga dapat didigunakan sebagai salah satu sumber antioksidan alami. Kata kunci : Antioksidan, Biji adas, DPPH phytochemical screening and antioxidant activity testing of fennel seed extract (foeniculum vulgare) Using the dpph method Abstract Has done research on phytochemical screening and testing fennel seed extract antioxidant activity. The purpose of this study is to determine the phytochemical screening compounds content of alkaloids, triterpenoids and steroids, flavonoids, tannins, saponins and determine the antioxidant activity of extracts of fennel seeds. Phytochemical screening for alkaloids was determined using reagent Mayer, Dregendorff, Wagner. Triterpenoids and steroids were determined using Mg powder. Tannin compounds determined with 1% FeCl3 solution and saponin determined using distilled water. Fennel seed extract obtained by the method soxhletasi using petroleum ether solvent and antioxidant activity assay using method 1-1-diphenyl-2-pikrihidrazil (DPPH). Research has been done showing the chemical content of fennel seeds contain compounds falvonoid positive , tannins and saponins . Antioxidant activity with 1000 ppm , 2000 ppm, 3000 ppm , 4000 ppm , 5000 ppm , respectively yield is 48.99 % , 33.92 % , 5.93 % , 21.23 %, 6.40 %. The highest antioxidant activity of fennel seeds contained 1000 ppm with 48.99 % result. Fennel seeds have a good percent antioxidant activity , so it can didigunakan as a source of natural antioxidants. Keywords : Antioxidants, Fennel seeds, DPPH
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