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All Journal AL-JAZARI JURNAL ILMIAH TEKNIK MESIN Jurnal Riset Fisika Indonesia
Heni Pornawati
Universitas Bangka Belitung
Astronomy Automotive Engineering Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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Energi Biomassa Berbasis Limbah Tongkol Jagung di Pangkalpinang dengan Serbuk Kayu Fadillah Ramadhani; Lathifa Putri Afisna; Heni Pornawati
AL-JAZARI JOURNAL SCIENTIFIC OF MECHANICAL ENGINEERING Volume 7, Nomor 2, Nopember 2022
Publisher : Universitas Islam Kalimantan Muhammad Arsyad Al Banjari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/al-jazari.v7i2.7175

Abstract

Menipisnya cadangan sumber minyak bumi di Indonesia dapat menjadi penghambat pembangunan pertanian berkelanjutan. Potensi energi alternatif salah satunya adalah limbah biomassa tongkol jagung yang dihasilkan dari aktivitas produksi pertanian yang jumlahnya sangat besar. Tongkol jagung memiliki nilai kalor sebesar 4059.853 kal/gr sehingga semakin banyaknya tongkol jagung yang digunakan akan mempercepat proses pembakaran. Akan tetapi proses pembakaran yang dilakukan harus dibantu oleh serbuk kayu kering sebagai pemantik bagi api. Kayu kering yang memiliki nilai kalor lebih besar dari tongkol jagung akan terbakar lebih cepat dan membantu membakar tongkol jagung. Hasil dari nyala lampu terdapat pada massa tongkol jagung 400gr dengan variasi volume air 250ml menyala redup selama 1 menit. Pada massa 500gr lampu menyala redup selama 1 menit pada variasi volume air 150ml dan 200ml. Sedangkan lampu menyala terang selama 20 detik pada variasi 250ml air. Hal ini juga membuktikan bahwa banyaknya volume air yang digunakan dapat mempengaruhi nyala lampu.
Pembuatan Minyak Kelapa Murni (Virgin Coconut Oil) dengan Metode Fermentasi dan Optimasi Waktu Simpan dan Penjernihan Menggunakan Ekstrak Daun Lada dan Karbon Aktif Heni Pornawati; Herman Aldila; Rena Aprilianti; Dera Selviani
Jurnal Riset Fisika Indonesia Vol 3 No 2 (2023): Juni 2023
Publisher : Jurusan Fisika, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jrfi.v3i2.3555

Abstract

Coconut oil is a valuable part of the coconut fruit and is widely used as an industrial raw material or part of it is made into cooking oil. Oil extraction from coconut meat can be done in several ways. Extraction of coconut oil that is being developed at this time is the fermentation method using several enzymes or microbes, one of which can be used is yeast tempeh. This research aims to analyze the yield content and quality criteria of coconut oil made using the fermentation method and to analyze the effect of adding pepper leaf extract and activated carbon on the shelf life and clarification of coconut oil. From the results of experiments carried out in mixing tempeh yeast, the free fatty acid test, yield test, aroma test and density test were carried out. As for the test results, the determination of free fatty acids in this cooking oil study used the titration method with NaOH until the color changed to pink. For the redemption test, the highest oil concentration was 3 grams, while the tempeh yeast 4 grams and 5 grams decreased. Aroma test where in week 9 coconut oil without treatment experienced rancidity. This was caused by auto-oxidation which began to form radicals due to the presence of fat peroxidation factors. The density test is close to the SNI standard value, namely the lowest density of 0.9600 g/cm3 obtained from closed treatment with 0.5 ml of extract. This is because in this treatment very little cooking oil is contaminated with other substances.
Co-Authors Dera Selviani Fadillah Ramadhani Herman Aldila Lathifa Putri Afisna Rena Aprilianti