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All Journal Biologi Edukasi : Jurnal Ilmiah Pendidikan Biologi Jurnal EduBio Tropika agriTECH Indonesian Journal of Chemistry Jurnal Serambi Engineering Jurnal Ilmiah Mahasiswa Pertanian Rona Teknik Pertanian KOPEMAS
Ratna Ratna
Universitas Syiah Kuala
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Engineering Environmental Science Social Sciences

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Journal : Jurnal Serambi Engineering

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Produksi Asam Laktat dari Fermentasi Limbah Cair Olahan Kelapa dengan Variasi Konsentrasi Inokulum Lactobacillus acidophilus Ratna Ratna; Ulfa Triovanta; Darwin Darwin
Jurnal Serambi Engineering Vol 5, No 4 (2020)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v5i4.2334

Abstract

The aim of this research is to study the fermentation technique of coconut processed liquid waste by varying the inoculum concentration of Lactobacillus acidophilus bacteria for lactic acid production. This research was carried out in several steps, namely the first step was the inoculum cultivation process of Lactobacillus acidophilus bacteria, the second step was the fermentation process of coconut water with variations in the concentration of Lactobacillus acidophilus bacteria inoculum, namely 5%, 10% and 20%. Analysis of lactic acid products, pH, glucose, Total Dissolved Solid (TDS), Total Suspended Solid (TSS) and Volatile Suspended Solid (VSS). The variation in the concentration of Lactobacillus acidophilus bacteria inoculum 20% is the most optimum to produce total lactic acid for batch and continuous systems. The results of the correlation analysis for inoculum variations of 5%, 10% and 20% had a strong relationship with lactic acid production, decreased pH and decreased glucose levels. The greater the inoculum concentration, the greater the decrease in the TDS, TSS and VSS content.
Simulasi Penurunan Kadar Asam Askorbat Buah Jambu Biji (Psidium Guajava L.) Selama Penyimpanan Menggunakan Visual Basic 6.0 Annisa Azzahra; Ratna Ratna; Agus Arip Munawar
Jurnal Serambi Engineering Vol 6, No 2: April 2021
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v6i2.2956

Abstract

Technological advances continue to develop rapidly and people need technology that is more efficient and faster in their work, including in the field of agriculture. Therefore, simulation is a suitable way to be implemented in the scope of modern society. This study aims to reduce the number of research and experimental trials in the laboratory because it takes a lot of time and money. This research refers to a simulation of decreasing levels of ascorbic acid in guava fruit during the storage period which is carried out by presenting data obtained from various sources, programming and simulation design using Visual Basic 6.0 and program testing. Guava fruit (Psidium guajava L) has  vitamin C content about 183.5 mg / 100 grams of material. The test results of this program, within 10 days of storage at room temperature (25oC) the levels of Ascorbic Acid in Guava fruit decreased by 56.1% and decreased levels of Ascorbic Acid by 92.26%, from 183.5 mg / 100 gr to around 12, 84 mg / 100 gr guava fruit for 720 hours. Therefore, the results of this simulation program succeeded in approaching the real number of decreases in ascorbic acid levels tested in original observations.
Co-Authors Abu Bakar Achyar Fadsy Ade Rika Marsita Agus Arip Munawar Ajrul Himawan Al Hulil Akbar Ferdynanda Alfatahillah Alfatahillah Amelia Maifani Annisa Azzahra Ashfa Achmad Bambang Sukarno Putra Bambang Sukarno Putra Bambang Sukarno Putra, Bambang Sukarno Br Padang, Sheila Saharani Darwin Darwin Darwin Darwin Dewi Sundari Diswandi Nurba, Diswandi Elly Shafriaty Erin Karlina Faradilla Faradilla Hayati Zahra Ichwana Ichwana Ichwana Ramli Indah Nandayani Irfan Maibriadi Kiman Siregar Kiman Siregar Lisa Maulidia Lusi Anasifa Maiful Hari Mega Apriesti Puri Mulyanti Mulyanti Murtahar Murtahar Nasrul Arahman Nurita Agustia Putra Bahrumi Putri, Cut Amelia Rahmat Fadhil Rahmat Fadhil Rahmiati Rahmiati Raida Agustina Raida Agustina Rama Niza Putri Ramayanty Bulan Rayhanur Wiwin Fajrina Rita Khathir Rita Khatir Rita Khatir Rita Khatir Roji Syahril Sahwi Safrida Safrida Siti Mechram Sri Aprilia Suhaimi Suhaimi Syafriandi Syafriandi Syafriandi Syafriandi Thahara Balqis Ulfa Triovanta Wardani Wardani Yulinar Yulinar Yusmanizar Yusmanizar Zulfahrizal Zulfahrizal