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All Journal BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Bioedusiana: Jurnal Pendidikan Biologi
Fitriani, Rita
Pusat Penelitian Kelapa Sawit Medan
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education

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PENGARUH KADAR ASAM SULFAT PADA HIDROLISIS TANDAN KOSONG KELAPA SAWIT (TKS) DAN WAKTU FERMENTASI TERHADAP KADAR BIOETANOL YANG DIHASILKAN sartini, Sartini; Fitriani, Rita; Lubis, Rosliana
BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Vol 4, No 2 (2018): Februari
Publisher : Program Studi Biologi, Fakultas Biologi Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (943.159 KB) | DOI: 10.31289/biolink.v4i2.1191

Abstract

The effect of sulphuric acid fermentation of processed palm oil bunch hydrolysis and on ethanol and sugar production was conducted. The aim was to investigate the hydrolytic optimum required by Saccharomyces cerevisiae for ethanol and sugar production. About 12.5 g powdered palm oil bunch was used in this experiment. The powder was hydrolized several times using sulphuric acid in several concentration. Sugar, product of  hydrolysis, was detected every one hour using spectrophotometer. The sugar was fermented by Saccharomyces cerevisiae and incubated for several days. Results showed that 2-4% sulphuric acid was oprimum concentration for 30 g/L sugar production. The highest ethanol production 4.94% occurred after two days fermentation.
PERBEDAAN KEMAMPUAN DASAR BEKERJA ILMIAH MAHASISWA BIOLOGI YANG MENGGUNAKAN MODEL PEMBELAJARAN INKUIRI DAN GROUP INVESTIGATION Fitriani, Rita
Bioedusiana: Jurnal Pendidikan Biologi Vol 2, No 1 (2017): Bioedusiana
Publisher : LP3MPM Universitas Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34289/bioed.v2i1.226

Abstract

Penelitian ini bertujuan untuk mengetahui perbedaan kemampuan dasar bekerja ilmiah mahasiswa biologi yang menggunakan model pembelajaran inkuiri dan group investigation pada konsep keanekaragaman makhluk hidup. Jenis penelitian adalah deskriptif komparatif dengan rancangan one group pretest-posttest design. Teknik pengumpulan data hasil belajar menggunakan pretest dan posttest dengan teknik analisis data menggunakan uji t independen. Hasil penelitian menunjukan bahwa ada perbedaan kemampuan dasar bekerja ilmiah mahasiswa biologi yang menggunakan model pembelajaran inkuiri dan group investigation dan berdasarkan rata-rata skor diketahui model pembelajaran inkuiri memberikan hasil yang lebih baik dibandingkan group investigation.Kata Kunci: kemampuan dasar bekerja ilmiah, inkuiri, group investigation
Co-Authors Lubis, Rosliana Sartini Sartini