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Syafira, Irmaina
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Chemistry

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Journal : PROSIDING SEMINAR KIMIA

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THE EFFECTIVENESS OF STEM AND RHIZOME EXTRACT OF KECOMBRANG (Etlingera elatior) AS A NATURAL PRESERVATIVE FOR TILAPIA (Oreochromis niloticus) MEAT Hernanda, Tasya; Nurlaili, Nurlaili; Noviyanti, Putri; Syafira, Irmaina; Aprilia, Lisa; Rofiah, Is Nur Dwi; Darmayanti, Citra
PROSIDING SEMINAR KIMIA Vol 2 No 1 (2023): Prosiding SNK 2023
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Tilapia contains protein and has a high nutritional content, including minerals, vitamins and unsaturated fats. However, this fish is easily damaged and rotten. This is caused by the activity of enzymes, microorganisms, or oxygen oxidation. Therefore, it is necessary to use preservatives so that the fish does not spoil or rot quickly. One of the potential natural preservatives is the kecombrang plant, especially the stems and rhizomes which contain bioactive substances. This plant has antibacterial properties that can help slow down the decline in fish quality. This study aims to determine the effectiveness of kecombrang stem and rhizome extract as a natural preservative in tilapia meat. The effectiveness of kecombrang stem and rhizome extracts was determined by soaking tilapia meat in kecombrang stem and rhizome extracts at various times of 0, 3, and 6 hours. The protein content of tilapia meat was measured by the biuret test. The results of this study indicated that the percentage of protein degradation inhibitors in kecombrang stem extract was 30.1% for 3 hours and 17.8% for 6 hours while in kecombrang rhizome extract was 34.2% for 3 hours and 22.6% for 6 hours. This shows that kecombrang rhizome extract is more effective as a natural preservative for tilapia meat compared to kecombrang stem extract. Keywords: Tilapia, kecombrang stem, kecombrang rhizome, natural preservative, biuret
ANALISIS PEMETAAN MINAT MENJADI GURU PADA MAHASISWA CALON GURU KIMIA FAKULTAS KEGURUAN DAN ILMU PENDIDIKAN UNIVERSITAS MULAWARMAN Syafira, Irmaina; Hartati, Yuli; Erika, Farah
PROSIDING SEMINAR KIMIA Vol 3 No 1 (2024): Prosiding SNK 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Someone who has an interest in becoming a teacher will feel happy with their job as a teacher without needing encouragement from other parties. Not all chemistry education study program students aim to become teachers after completing their studies. Many students enter the education department without having a definite desire to become teachers in the future after graduating. This research aims to determine the mapping of interest in becoming a teacher among prospective chemistry teacher students at the Faculty of Teacher Training and Education, Mulawarman University. This research is descriptive qualitative research. The subjects in this research were 68 chemistry education students at Mulawarman University class of 2019. Data were collected using a questionnaire. The data analysis technique used is descriptive analysis technique using percentages. Based on the research results, a mapping of interest among prospective chemistry teacher students was obtained from those who were interested, not interested and who were unsure. Keywords: Teacher, College Student, Interest, Interest in Becoming a Teacher
Co-Authors Aprilia, Lisa Darmayanti, Citra Farah Erika Hartati, Yuli Hernanda, Tasya Noviyanti, Putri Nurlaili Nurlaili Rofiah, Is Nur Dwi