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Destri Ratna Ma'rifah
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Biology Education Department Faculty of Teacher and Training Education Universitas Ahmad Dahlan Jl. Ahmad Yani, Ringroad Selatan, Tamanan, Banguntapan, Bantul, Daerah Istimewa Yogyakarta
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Journal on Biology and Instruction (JouBIns)
Published by Universitas Ahmad Dahlan
ISSN : -     EISSN : 27980863     DOI : https://10.26555/joubins
Core Subject : Science, Education, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Environmental Science Immunology & microbiology
This journal presents articles on research results or studies related to the fields of biology education and biology science. The article in this journal contains a discussion on the use of biology as a means of education and living things as biological objects. The scope contained in this journal includes: development of biology teaching materials, development of learning technology in biology learning, exploration of the potential of nature as a source of learning biology, germplasm wealth, environmental biology, biotechnology.
Arjuna Subject : Umum - Umum
Articles 2 Documents
 1 
Search results for , issue "Vol. 4 No. 2 (2024)" : 2 Documents clear
Diversity and Conservation: Coral Reefs in Lhok Mata-IE Ujung Pancu Aceh Besar Zulfikar, Teuku Muhammad; Fadhli, Muhammad; Amni, Chairul; Andalia, Nurlena
Journal on Biology and Instruction Vol. 4 No. 2 (2024)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/joubins.v4i2.12657

Abstract

 Coral reef diversity is a crucial indicator of marine ecosystems' health and coastal communities' well-being. This study aims to identify the diversity of coral reef species and their conservation efforts in Lhok Mata-Ie Ujung Pancu, Aceh Besar, using the quadratic transect survey method. The results show high diversity, dominated by hard coral species such as Acropora, Montipora, and Porites. However, the region faces serious threats from illegal fishing, pollution, and the impacts of climate change. In response, local communities, governments, and NGOs have implemented various conservation measures, including the establishment of protected areas and coral replanting programs. Such efforts require cross-sector collaboration to balance natural resource utilization with ecosystem protection. This research provides a solid foundation for the sustainable management of coastal areas and coral reefs in the future.
Processing of Crude Palm Oil and Testing of Free Fatty Acid (FFA) to Control the Quality of CPO Oil at PT. Thanks to Palm Oil Sukamaju Finurti, Elly; Yusfarani, Delia; Harfian, Binar Azwar Anas
Journal on Biology and Instruction Vol. 4 No. 2 (2024)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/joubins.v4i2.6958

Abstract

The purpose of this study was to determine the analysis of the quality control quality of Free Faty Acid CPO oil at PT. BSS Sukamaju. The method used in analyzing the FFA of Crude Palm Oil is the volumetric titration method using 0.1046 standard solution as the titre, Phenolpthalein as an indicator and a mixture of isopropylalcohol as the solvent which was observed for 5 days. The average FFA results obtained on September 25, 2021 to September 29, 2021 are 3.8% with a max standard of 5%, and the moisture observation results get an average of 0.13% with a max standard of 0.20%. While the results of the observation of dirt with an average of 0.0178% with a max standard of 0.02%. Thus, as a measure of quality standards in international trade, FFA is set at 5%, which means that PT. BSS has met quality standards in international trade. Quality control control that is carried out is very influential in product quality so that it can affect revenue because the selling value in marketing is very dependent on the quality or quality of the CPO.

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