Sistem Pengendalian Temperatur dan Monitoring pH dengan Penambahan Gelombang Audiosonik pada Fermentasi Yogurt

Ristias, Alifia Puteri (2023) Sistem Pengendalian Temperatur dan Monitoring pH dengan Penambahan Gelombang Audiosonik pada Fermentasi Yogurt. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Yogurt adalah salah satu produk berbahan dasar susu yang difermentasi menggunakan bakteri Lactobacillus bulgaricus dan Streptococcus thermophillus. Bakteri tersebut merupakan Bakteri Asam Laktat (BAL) yang dapat tumbuh dengan baik pada temperatur 37°-44°C hingga mencapai pH 4,4. Selain itu, penambahan gelombang audiosonik juga dapat mempercepat pertumbuhan BAL. Berdasarkan uraian tersebut, penelitian ini dilakukan dengan tujuan mengetahui cara kerja dan pengaruh digunakannya sistem pengendalian temperatur dan monitoring pH dengan penambahan gelombang audiosonik pada fermentasi yogurt. Sensor yang digunakan adalah sensor temperatur DS18B20, dan sensor pH DFRobot SEN0161. Aktuator yang digunakan untuk menjaga temperatur agar tetap stabil adalah relay yang mengendalikan PTC heater serta pendukungnya fan DC. Selain itu digunakan pula speaker dan buzzer. Pada penelitian ini dilakukan pengukuran sebanyak 4x yaitu pengukuran tanpa sistem pengendalian temperatur, dan pengukuran dengan sistem pengendalian yang menggunakan 3 set point temperatur yaitu 38°C, 40°C, dan 42°C. Cara kerja sistem ini diawali dengan temperatur dan pH pada sampel yang dibaca oleh sensor DS18B20 dan sensor DFRobot SEN0161, selanjutnya dikirim ke Arduino Mega 2560 agar PTC Heater dan fan DC memperoleh perintah untuk menjaga temperatur sampel berada di set point, begitu juga speaker untuk memberikan gelombang audiosonik, dan buzzer untuk tanda bahwa proses fermentasi telah selesai. Pengaruh digunakannya sistem ini adalah temperatur dapat terjaga pada set point yang diinginkan dan waktu fermentasi menjadi lebih cepat yaitu 9.74 jam dengan menggunakan set point 400C daripada menggunakan set point lainnya.
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Yogurt is a fermented milk-based product using Lactobacillus bulgaricus and Streptococcus thermophillus bacteria. These bacteria are lactic acid bacteria (LAB) which can grow well at temperatures of 37°-44°C until they reach a pH of 4.4. In addition, the addition of audiosonic waves can also accelerate the growth of BAL. Based on this description, this research was conducted with the aim of knowing how it works and the effect of using the temperature control and pH monitoring system with the addition of audiosonic waves in yogurt fermentation. The sensors to be used are the DS18B20 temperature sensor and the DFRobot SEN0161 pH sensor. The actuator used to keep the temperature stable is a relay, by controlling the PTC heater and its supporting DC fan. In addition, speakers and buzzers are also used. The system is designed by connecting sensors, actuators, and other supporting components to the Arduino Mega 2560 microcontroller to get commands and/or to the power supply to get a voltage source. In this study, 4 measurements were taken, namely measurements without a temperature control system, and measurements with a control system using 3 temperature set points, namely 38°C, 40°C, and 42°C. The workings of this system begin with the temperature and pH of the sample which are read by the DS18B20 sensor and the DFRobot SEN0161 sensor, then sent to the Arduino Mega 2560 so that the PTC Heater and DC fan receive orders to keep the sample temperature at the set point, as well as a speaker to provide audio sonic waves, and a buzzer to indicate that the fermentation process has been completed. The effect of using this system is that the temperature can be maintained at the desired set point and the fermentation time becomes faster, namely 9.74 hours using a set point of 400C compared to using other set points.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Fermentation, DS18B20 sensor, pH sensor DFRobot SEN0161, Milk, Yogurt, Fermentasi, Sensor DS18B20, Sensor pH DFRobot SEN0161, Suhu, Yogurt
Subjects:	Q Science Q Science > QC Physics
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis
Depositing User:	Alifia Puteri Ristias
Date Deposited:	28 Aug 2023 04:52
Last Modified:	28 Aug 2023 04:52
URI:	http://repository.its.ac.id/id/eprint/103376

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