Abstract
Rhodomyrtus tomentosais one of herbs which belongs to myrtaceaefamily. This plant possessesalkaloid which is efficacious as anti diarrhea, anti diabetes, anti microbial, and anti malaria, however some alkaloid compoundsare poisonous. Thus,it is necessity to identify the alkaloid compounds contained in the stem of Rhodomyrtus tomentosa which are known the use. Thisresearch aimed to identify the types of alkaloid compoundsin the Rhodomyrtus tomentosa stem and find out its usesas the biology teaching materials in form of LKS (Student Work Sheet). The research was descriptive explorative which was purposed to describe the types of alkaloid compoundsin the Rhodomyrtus tomentosa stem. LC-MS (Liquid Chromatograpgy-Mas Spectroscopy) was employed in this research to analyze the compounds. The research results showed that there were seven types of alkaloid compounds within the Rhodomyrtus tomentosa, namely: maritidine (BM 288 m/z), berberine (BM 336 m/z), ismine (BM 258 m/z), tazettine (BM 332 m/z), lycorine (BM 288 m/z), deoxytazettine (BM 216 m/z), and homolycorine (BM 316 m/z). The results of the research has been used as biology teaching materials in senior high school X grade,The Biodiversity of Indonesia.
Highlights
Indonesia merupakan Negara dengan kekayaan alam yang melimpah
necessity to identify the alkaloid compounds contained in the stem of Rhodomyrtus tomentosa
Thisresearch aimed to identify the types of alkaloid compoundsin the Rhodomyrtus tomentosa stem
Summary
Indonesia telah menggunakan obat tradisional sebagai salah satu upaya dalam penanggulangan masalah kesehatan jauh sebelum layanan kesehatan formal dengan obat-obatan modernnya menyentuh masyarakat (Anjelisa et al, 2007). Salah satu tumbuhan yang digunakan sebagai obat tradisional oleh masyarakat Kalimantan adalah karamunting (Rhodomyrtus tomentosa). Salah satunya adalah senywa alkaloid yang berkhasiat sebagai anti diare, anti diabetes, anti mikroba dan anti malaria, akan tetapi beberapa senyawa golongan alkaloid bersifat racun sehingga diperlukan adanya identifikasi senyawa golongan alkaloid yang dapat diketahui manfaatnya. Alkaloid dapat ditemukan pada berbagai bagian tanaman, seperti bunga, biji, daun, ranting, akar dan kulit batang. Alkaloid pada tanaman berfungsi sebagai racun yang dapat melindunginya dari serangga dan herbivora, faktor pengatur pertumbuhan, dan senyawa simpanan yang mampu menyuplai nitrogen dan unsur-unsur lain yang diperlukan tanaman (Wink, 2008).
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