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STUDI KADAR TANIN DAN INHIBISI OKSIDAN HASIL MASERASI BIJI PINANG WANGI DENGAN PERLAKUAN DAN TANPA PERLAKUAN ULTRASONIK Rosalina; Hibrah; Agung Kurnia Yahya; Ferry Ikhsandy
JURNAL TEKNOLOGI PERTANIAN Vol. 11 No. 1 (2022)
Publisher : Prodi Teknologi Pangan Fakultas Pertanian Universitas Islam Indragiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32520/jtp.v11i1.1965

Abstract

Areca nut from Padang Pariaman as an export commodity is rich in tannin content and its ability as an antioxidant is used as the object of this research. The extraction of fragrant betel nut seeds has been carried out using the usual kinetic maceration method and the kinetic maceration method with ultrasonic wave irradiation pretreatment. The purpose of this study was to study the effect of ultrasonic irradiation on the tannin content, total phenol and antioxidant inhibition of the ethanol extract of areca nut seeds. A total of 20 grams of areca nut powder in a mesh variation of 20, 40 and 70 was extracted in 200 ml of ethanol with a solvent variation of 65% and 80%. Using three treatments, namely maceration treatment without ultrasonic irradiation, maceration with 15 minutes of ultrasonic irradiation pretreatment and the third treatment with 30 minutes of ultrasonic irradiation. The solvent was evaporated in a rotary evaporator and then tested for tannin levels using Follin Denish and DPPH reagents to measure antioxidants. The results of the highest tannin content were obtained in the third treatment, namely maceration with ultrasonic irradiation treatment 30 minutes, areca nut powder size 40 mesh, ethanol solvent 80% obtained tannin content of 12.5%. Meanwhile, the highest antioxidant activity was obtained at 70 mesh size, 80% ethanol solvent and the same treatment, which was 81.78.
RANCANG BANGUN FERMENTOR BERBASIS INTERNET OF THINGS (IOT) UNTUK PEMANTAUAN SUHU DAN KECEPATAN AGITATOR TIPE PITCHED BLADE TURBINE PADA PRODUKSI BIOETANOL DARI MOLASE David Rian Mahendra; Nadira Alifa Prameswari; Eko Supriyadi; Rosalina
Jurnal Teknik SILITEK Vol. 6 No. 03 (2026)
Publisher : Fakultas Teknik Universitas Pasifik Morotai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51135/rhw1dy45

Abstract

Penelitian ini bertujuan merancang dan membangun Fermentor berbasis Internet of Things (IoT) berkapasitas 5 liter dengan sistem pengadukan tipe Pitched Blade Turbine (PBT) untuk produksi bioetanol dari molase. Fermentor dilengkapi sensor suhu DS18B20 dan sensor kecepatan FC-03 yang terhubung ke aplikasi Blynk melalui mikrokontroler Arduino Uno R4, serta motor stepper NEMA 23 yang dikendalikan oleh Arduino Uno R3. Penelitian dilakukan dengan dua perlakuan yaitu fermentasi dengan pengadukan intermitent (150 rpm, 30 menit ON, 1 jam OFF) dan tanpa pengadukan, menggunakan bahan baku molase dengan perbandingan 1:3 (molase:air). Hasil penelitian menunjukkan bahwa fermentasi dengan pengadukan menghasilkan konsentrasi bioetanol tertinggi sebesar 10,6% (v/v) dalam waktu 49 jam dengan konversi substrat 94,35% dan yield 48,22%. Sementara itu, fermentasi tanpa pengadukan menghasilkan konsentrasi bioetanol 9,24% (v/v) dalam waktu 76 jam dengan konversi substrat 82,11% dan yield 41,97%. Kedua nilai tersebut masih berada dalam kisaran standar kadar bioetanol hasil fermentasi kasar (8–11%). Integrasi teknologi IoT memungkinkan pemantauan proses secara real-time dan menjadikan fermentor ini sebagai inovasi yang efisien untuk skala laboratorium.
Co-Authors David Rian Mahendra Eko Supriyadi Ferry Ikhsandy Hibrah Nadira Alifa Prameswari Yahya, Agung Kurnia