
Uji Identifikasi Saponin dan Reagen
Quiz
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University
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mluqman alh
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21 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Uji buih pada identifikasi saponin dikatakan positif jika...
Terbentuk endapan putih
Warna larutan menjadi ungu
Terbentuk buih yang stabil selama >30 menit dengan tinggi 3 cm
Terbentuk cincin merah
Terjadi perubahan warna menjadi kuning
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Reagen yang digunakan pada uji Liebermann-Burchard adalah...
NaOH dan etanol
Anisaldehida dan H₂SO₄
Asam asetat anhidrat dan H₂SO₄ pekat
HCl dan kloroform
Etanol dan FeCl₃
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Warna hijau-biru pada uji Liebermann-Burchard menunjukkan adanya...
Flavonoid
Saponin jenuh
Saponin steroid
Alkaloid
Triterpenoid
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cincin merah pada uji Salkowski menunjukkan adanya...
Alkaloid
Steroid tak jenuh
Flavonoid
Triterpenoid
Saponin jenuh
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tujuan dari pemanasan ekstrak dengan HCl 2 N selama 2 jam pada KLT sapogenin adalah untuk...
Menstabilkan senyawa
Menghilangkan zat pengganggu
Menghidrolisis saponin menjadi aglikon (sapogenin)
Mewarnai senyawa triterpenoid
Melarutkan lemak
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Reagen penampak noda anisaldehida-asam sulfat memberikan warna...
Biru
Merah muda
Merah ungu
Coklat tua
Hijau terang
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Reagen antimon klorida dalam KLT akan memberikan warna...
Kuning
Ungu
Merah muda
Coklat
Biru tua
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