This study was conducted to determine the immunostimulant activity of several phenylbutenoid derivatives isolated from bangle (Zingiber cassumunar Roxb) rhizome: [1] [(E)-4-(3',4'-dimethoxyphenyl)but-3-en-1-ol], [2] [(E)-4-(2',4',5'-trimethoxyphenyl)but-3-en-1-ol] and [3] [(E)-4-(3',4',1-trimethoxyphenyl)but-3-en-1-ol]. Immunostimulant activity was done by stimulating macrophage cells of mouse peritoneum. The result showed that [(E)-4-(3',4'-dimethoxyphenyl)but-3-en-1-ol] compound had highest immunostimulant activity (99.0%) compared to compound 2 (93.7%) and 3 (80.0%).
Two species of kunci pepet, i.e. K. angustifolia and K. rotunda (Zingiberaceae), had different aromas. We had been analyzed volatile oils of two species by gas chromatography-mass spectrometry (GC-MS). The volatile oils had been got by water-steam distillation. The GC chromatograms of K. angustifolia showed 16 compounds, 5 compounds of them was main compounds, i.e. cycloproazulene (21.86%), alloaromadendrene (20.79%), cyclopropnaphtalene (11.02%), (-)β-elemenene (16.00%), caryophyllene (16.00%), and isobornyl acetate (11.02%). The GC chromatograms of K. rotunda showed 10 compounds, 2 compounds of them was main compound, i.e. tetradecane (26.85%) and benzylbenzoic (55.46%). Based on chemical constituent of volatile oils, the two species of Kaempferia had similarity of 25.00-37.50%. Alloaromadendrene of K. angustifolia and benzylbenzoic of K. rotunda could be used to distinguish the two species of Kaempferia.
PENDAHULUAN Kasus keracunan makanan yang disebabkan adanya bakteri patogen di dalam bahan pangan dengan menimbulkan banyak korban yang meninggal dan ratusan orang yang perlu dirawat di rumah sakit sering terjadi di Indonesia. Adanya kasus keracunan makanan yang menelan banyak korban kurang mendapat perhatian yang serius mengenai penyebab keracunan pangan olahan non
Telah dilakukan penelitian elusidasi struktur kimia senyawa fenol-2-(1-metiletoksi)-metilkarbamat, yang bersifat bioaktif (LC50 = 3,57 ppm) pengendali serangga ulat kubis(Crocidolomia binotalis Zeller) dari ekstrak etil asetat kulit batang Aglaia disoxylum(Meliaceae), salah satu tumbuhan yang dikenal sebagai pasak bumis. Senyawa inidiperoleh berupa kristal tidak berwarna, berbentuk jarum (40 mg), titik leleh 99–101 oC,rumus molekul C11H15NO3 dan BM = 209. Penetapan struktur kimia senyawa tersebutdilakukan berdasarkan data spektroskopi UV-VIS, FTIR, 1H dan 13C NMR, HMQC,HMBC, dan MS (GC-MS).
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