Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal Jurnal Riptek Life Science
Amnan Haris
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance Environmental Science Social Sciences Transportation

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Pengaruh Laju Injeksi Karbondioksida terhadap Oksigen Terlarut dan Pertumbuhan Spirulina platensis Al Anshori, Aziz; Sri Ngabekti; Andhina Putri Heriyanti; Amnan Haris
Life Science Vol. 13 No. 2 (2024): November 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/unnesjlifesci.v13.i2.14327

Abstract

Indonesia has a high and continually increasing total greenhouse gas emission. Carbon dioxide absorption can be mitigated by utilizing the photosynthesis process of microalgae. Spirulina platensis was chosen as the sample to be cultivated in this study due to its ease of cultivation and its status as a large-scale carbon dioxide absorber. The objective of this research is to analyze the effect of varying carbon dioxide injection rates on dissolved oxygen and the growth of S. platensis. This research employed an experimental method involving semi-mass cultivation using a 12 L volume tube photobioreactor (PBR) as a container with three treatment variations. These variations included culture P0 (without injection/control), culture PA (0.5 L/minute), and culture PB (1 L/minute). The data analysis revealed that the variation with an increase in dissolved oxygen levels and enhanced growth of S. platensis was most optimal in culture PB (1 L/min). One-way ANOVA results showed significant differences between culture P0 (without injection) and classified data indicating that culture PB (1 L/min) fell into a high-level classification. The average dissolved oxygen value for culture PB (1 L/min) was 7.9 mg/L, with a cell density average of 0.651 cells/ml and a dry biomass weight of 3.8 grams. The conclusion drawn is that varying carbon dioxide injection rates significantly affect dissolved oxygen levels and the growth of S. platensis, as evidenced by cell density and biomass calculations. The effect on the S. platensis culture is a notable increase in both parameters. The application of varying carbon dioxide injection rates in the cultivation of S. platensis may serve as a reference for identifying the optimal carbon dioxide injection rate during semi-mass cultivation.
Analisis Risiko Proses Operasional Industri Tahu di Candisari, Kota Semarang Jihan Zulfani; Azka Dwi Yuniar; Diandra Novitasari; Oktavinda Jihan Nurita; Evi Juliani Ayu Pratiwi; Amnan Haris; Andhina Putri Heriyanti
Jurnal Riptek Vol 19, No 2 (2025)
Publisher : Badan Riset dan Inovasi Daerah Kota Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35475/riptek.v19i2.324

Abstract

The food industry has various potential risks that can affect workplace safety, production smoothness, and product quality. Loso Tofu Factory in Semarang City is a medium-scale industry facing such risks. This study aims to analyze risks in the tofu production process using the Failure Mode and Effect Analysis (FMEA) method and Risk Priority Number (RPN). Among 13 identified risks, five main risks were prioritized for mitigation: slippery production area (R10), soybean spillage due to employee slips caused by slippery areas (R9), tofu crumbling during cutting (R11), mixing of waste with soybeans (R2), and incorrect tofu cutting (R12). Mitigation measures include improving Standard Operating Procedures (SOP), conducting work training, using Personal Protective Equipment (PPE), and maintaining production equipment. The results demonstrate that implementing mitigation strategies can enhance workplace safety, production efficiency, product quality, and ensure industrial sustainability. This research underscores the importance of proactive risk management in maintaining operational continuity and product standards in the food industry. By addressing these prioritized risks, Loso Tofu Factory can minimize disruptions, reduce hazards, and strengthen its position as a sustainable medium-scale enterprise. The integration of FMEA and RPN provides a systematic approach to identifying and managing critical risks, offering a model for similar industries to improve safety and production outcomes.
Co-Authors Al Anshori, Aziz Andhina Putri Heriyanti Azka Dwi Yuniar Diandra Novitasari Evi Juliani Ayu Pratiwi Oktavinda Jihan Nurita Sri Ngabekti Zulfani, Jihan