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PENGARUH CARA PEMASAKAN DENGAN WAKTU YANG BERBEDA TERHADAP KOMPOSISI ASAM LEMAK OMEGA-3 IKAN LEMA (Rastrelliger kanagurta) Latupeirissa, Louisiana; Rumahlatu, Dominggus
Majalah BIAM Vol 12, No 2 (2016): Majalah BIAM
Publisher : Balai Riset dan Standardisasi Industri Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (286.79 KB)

Ikan lema (Rastrelliger kanagurta) adalah salah satu jenis ikan pelagis kecil yang tertangkap sepanjang tahun dan merupakan jenis ikan ekonomis penting, banyak digemari dan dikonsumsi oleh masyarakat khususnya di kota Ambon. Ikan dapat dikonsumsi secara mentah, juga dapat dikonsumsi melalui cara pemasakan antara lain: perebusan, pemanggangan dan penggorengan. Nilai nutrisi dari ikan yang akan dikonsumsi selain dipengaruhi oleh cara juga waktu pemasakan. Total waktu pemasakan adalah 10-20 menit, tergantung pada ketebalan daging ikan. Penelitian ini bertujuan untuk mengkaji pengaruh cara pemasakan dengan waktu yang berbeda terhadap komposisi asam lemak omega-3 ikan lema. Ikan lema mentah dan yang dimasak disiapkan sebagai berikut: ikan dikeluarkan insang dan isi perut, dicuci beberapa kali dengan air mengalir untuk menghilangkan sisa darah dan lendir, ditiriskan selanjutnya dimasak dengan cara rebus, panggang dan goreng selama 10 dan 15 menit, kemudian didinginkan, dikemas secara vakum dan dianalisa komposisi asam lemak omega-3. Hasil penelitian menunjukkan ada pengaruh cara pemasakan terhadap asam eikosapentaenoat ikan lema dimana asam eikosapentaenoat dengan cara perebusan lebih tinggi, tetapi tidak ada pengaruh cara pemasakan dengan waktu yang berbeda terhadap asam linolenat, asam eikosapentaenoat dan asam dokosaheksaenoat.

The Influence of Environmental Factors on the Diversity of Gastropods in Marsegu Island, Maluku Bula, Wiwien; Leiwakabessy, Fredy; Rumahlatu, Dominggus
Biosaintifika: Journal of Biology & Biology Education Vol 9, No 3 (2017): December 2017
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v9i3.10637

Gastropods are known to have a wide distribution. They can live in a variety of habitats and influenced by various environmental factors. The aim of this study was to investigate the diversity of gastropods and its relationship with the physical and chemical environment of a water. This research was an ecological research with correlational descriptive type. The selection of Marsegu Island was based on the fact that the area is a conservation area, both the forest and sea are frequently visited by tourists. The results of this research showed that there were 22 species of gastropod found in the water of Marsegu Island. The most commonly found was from the genus of Cypraea (5 species). Gastropods found mostly from the family of Strombidae which consisted of 4 genera i.e. Lambis, Canarium, Strombus and Lentigo. The value of gastropod diversity in the three research stations was moderate, 2.93, 2.91 and 2.95 respectively. In addition, there is a correlation between environmental factors and the diversity of gastropods. The simultaneous effect of the independent variables toward the dependent variables can be explained by the magnitude of the determination coefficient (R Square) which was 0528 or 52.8%. Result of this study confirms that the environmental factors greatly affects the diversity of Gastropod in the coastal waters of Marsegu island. The results can provide benefits as control over fishing and coastal pollution due to human activities.

Complex Instruction Team Product (CITP) learning model: Improving student’s scientific attitudes and learning outcomes Rumahlatu, Dominggus; Sangur, Kristin; Liline, Sintje
JPBI (Jurnal Pendidikan Biologi Indonesia) Vol 5, No 2 (2019): JULY
Publisher : University of Muhammadiyah Malang

Complex Instruction Team Product (CITP) learning model is one of the creative-innovative learning models which is assumed to be able to empower scientific attitudes and learning outcomes of students. This study aimed to determine students’ scientific attitudes and cognitive learning outcomes by implementing CITP learning model. This research used one-group pretest-posttest design. The sample was 18 tenth graders of academic year 2017/2018 of State Senior High School 6 of Ambon, Maluku Province. The data was analyzed using N-Gain test which then continued with dependent samples t-test. This result indicated that the highest achievement of students’ scientific attitudes were honesty and creativity (54). Meanwhile, the N-Gain score of students' cognitive learning outcomes was 0.61. In addition, the results of paired samples t-test show that there was a significant difference (p<0.05) between the students’ cognitive learning outcomes before and after the application of CITP learning model. This means that the application of CITP learning model can improve students’ scientific attitudes and cognitive learning outcomes.

BIOMONITORING: SEBAGAI ALAT ASESMEN KUALITAS PERAIRAN AKIBAT LOGAM BERAT KADMIUM PADA INVERTEBRATA PERAIRAN Dominggus Rumahlatu
SAINSTIS SAINSTIS (Vol 1, No 1
Publisher : Lembaga Penelitian dan Pengembangan Universitas Islam Negeri Maulana Malik Ibrahim Malang.

People’s activity in water area has made this area as waste place from a variety of human’s activity. One contaminant thrown to the seaboard is heavy metal, specifically for cadmium (Cd). Naturally, the pollution sources of heavy metal Cd in water area are coming from geological process and some of human’s activity (antropogenic). The effect of Cd’s contamination to invertebrate water are died effect and ecology’s unbalancing of sea organism varieties. It is because Cd cannot be broken up (non degradable) by living organism and it can be accumulated to the environment. One effort to tackling heavy metal Cd contamination in water is doing biomonitoring accumulation as assessment instrument of water quality.Key words: biomonitoring, biomoitoring accumulation, heavy metal Cadmium, invertebrate water

The influence of project-based learning strategies on the metacognitive skills, concept understanding and retention of senior high school students Dominggus Rumahlatu; Kristin Sangur
Journal of Education and Learning (EduLearn) Vol 13, No 1: February 2019
Publisher : Intelektual Pustaka Media Utama

Biology learning in the 21st century leads to the empowerment of metacognitive skills. Increased metacognitive skills can support concept understanding and maximize the students’ retention of concepts. This research aimed at investigating the effect of project-based learning strategy on metacognitive skills, concept understanding and retention of class X students of Senior High School 1 Kairatu, West Seram District, Maluku. This research is a quasi-experimental research using pre test-post test nonequivalent control group design. The samples of this research were all students of classX1 of Senior High School 1 Kairatu. The data obtained in this research were the learning results of metacognitive skills, concept understanding, and retention of the students. The data were analyzed by using analysis of covariance (ANCOVA). The research results showed that the implementation of project-based learning strategy had a significant effect on students’ metacognitive skills, concept understanding, and retention. Furthermore, the results of post hoc LSD test showed some differences in the notation between the project-based learning strategy and the conventional learning strategy. These results indicated that the learning stages of project-based learning strategy could empower the students’ metacognitive skills, concept understanding, and retention.

The Correlation Between Generic Science Skill and Biology Learning Results of Public Junior High schools in Ambon Using Scientific Approach Prelly M.J Tuapattinaya; Dominggus Rumahlatu
Journal of Education and Learning (EduLearn) Vol 12, No 2: May 2018
Publisher : Intelektual Pustaka Media Utama

The purpose of this research was to determine the correlation between generic science skills and students’ Biology learning results on plant movement material in Junior High Schools in Ambon using scientific approach. This is a correlational research using the instruments of the rubric of generic science skill and cognitive tests. The design of this reserch is the analysis of the effect of generic science skill variables (X1) and the school origin (X2) toward the students’ learning results (Y) with the design of one group pretest-posttest. The data ontained were descriptively analyzed and through covariate analysis and correlation analysis. The results of this research showed that learning by using scientific approach had the average score of 0.740 with high category (Junior High School 6 Ambon), while learning using conventional approach had an average score of 0.219 with low category (Junior high school 9 Ambon). The biology learning result score of the students in some junior high schools in Ambon on the material of plant movement systems taught by using scientific approach experienced an increase, inwhich the students’ biology learning results after taught by using scientific approach achieved 85.68-100.00% with very good category compared to that taught by using the conventional approach, which was 39.51-89.04% with fair until very good catagory. In addition there was a strong correlation (r=0.6) between generic science skills and biology learning results on the conceptof plant movement of Junior High School students in Ambon.

Cadmium Induces the Activation, Concentration, and Expression of MTF-1 Protein As a Biomolecular Response of Sea Urchins Deadema setosum Dominggus Rumahlatu
Journal Omni-Akuatika Vol 13, No 2 (2017): Omni-Akuatika November
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Heavy metal cadmium has toxic effects in the bodies of living organisms.However, the bodies of living organisms have the ability to regulate a wide range of toxic entering the body by using biomolecular response that aims at maintaining cell homeostasis. In this research an induction of cadmium in sea urchins Deadema setosum was carried out. Cadmium was induced in 6 levels of concentration in six treatment groups of D. setosum. Each group consisted of 7 individuals.The examination of MTF-1 protein activation was carried out by immunohistochemical method, the measurement of MTF-1 protein concentration was carried out by the indirect ELISA method (Enzyme Linked Imunoasssay) and the examination of MTF-1 protein expression was carried out by western blotting method. The data were analyzed using descriptive analysis and One Way ANOVA followed by Duncan test 0.05 to determine the mean difference of MTF-1 protein concentration of D. setosum. The research results showed that cadmium induction activated MTF-1 characterized by the condition of liver cells of D. setosum which was brown.The higher the exposure of cadmium concentration on D. setosum, the higher the concentration of MTF-1 expressed

Complex Instruction Team Product (CITP) learning model: Improving student’s scientific attitudes and learning outcomes Dominggus Rumahlatu; Kristin Sangur; Sintje Liline
JPBI (Jurnal Pendidikan Biologi Indonesia) Vol. 5 No. 2 (2019): JULY
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jpbi.v5i2.8367

Complex Instruction Team Product (CITP) learning model is one of the creative-innovative learning models which is assumed to be able to empower scientific attitudes and learning outcomes of students. This study aimed to determine students’ scientific attitudes and cognitive learning outcomes by implementing CITP learning model. This research used one-group pretest-posttest design. The sample was 18 tenth graders of academic year 2017/2018 of State Senior High School 6 of Ambon, Maluku Province. The data was analyzed using N-Gain test which then continued with dependent samples t-test. This result indicated that the highest achievement of students’ scientific attitudes were honesty and creativity (54). Meanwhile, the N-Gain score of students' cognitive learning outcomes was 0.61. In addition, the results of paired samples t-test show that there was a significant difference (p<0.05) between the students’ cognitive learning outcomes before and after the application of CITP learning model. This means that the application of CITP learning model can improve students’ scientific attitudes and cognitive learning outcomes.

Empowering students’ critical thinking skills, information literacy and cognitive learning outcome through RBL-TPS model Siti S. Narahaubun; Johanis F. Rehena; Dominggus Rumahlatu
JPBI (Jurnal Pendidikan Biologi Indonesia) Vol. 6 No. 2 (2020): JULY
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jpbi.v6i2.11456

The use of proper learning model by teachers’ in a class room is crucial to be done in addressing the better learning quality. This study aimed at improving learning quality by choosing the most optimum learning model. This research was a quasi-experimental study using nonequivalent pretest-posttest control group design. This study was conducted in Senior High School 9 and Senior High School 5 of Ambon in academic year 2018/2019.The total sample used in this research was 127 students. The Critical Thingking Skills (CTS) and Cognitive Learning Outcome (CLO) tests as well as information literacy observation sheets were used as the instruments to gain the data. The data obtained in terms of students’ CTS, CLO ang information literacy were analyzed using inferential statistics (ANCOVA and LSD tests). The results showed that there were significant differences among X graders’ CTS, CLO, and information literacy [F(1,124) = 64.380, F(1,124) = 68.238 F(1,124) = 26.078 , p < 0.05] respectively, who were taught using RBL-TPS learning model in biodiversity material. In the other words, the RBL-TPS learning model is able to empower students’ CTS, CLO, and information literacy compared to the common learning model used by biology teachers. Thus, the used of RBL-TPS is recommended to be implemented in the other biology learning materials.

RESPONS PERILAKU BULU BABI Deadema setosum TERHADAP LOGAM BERAT KADMIUM Dominggus Rumahlatu
Bumi Lestari Journal of Environment Vol 12 No 1 (2012)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Deadema setosum are sea urchins which are very sensitive to heavy metal pollutants. In this research, the observation of behavioral responses namely the behavior of moving and resting Deadema setosumare conducted. They are caused by exposure of different heavy metals Cd at 4 agurium tanks for 4 weeks. Analysis of levels of heavy metals Cd that accumulates in the gonad and intestine Deadema setosum using Atomic Absorbsion Spectrofotometer (AAS). The observations shows responses of switching behavior and resting Deadema setosum that fluctuats during 4 weeks of observation. In addition, behavioral end point’s observations about the losing of spines is not observed during these 4 weeks. The content levels of Cd which accumulates in the intestine and the gonads increase from the first tank (lowest value) to the fourth tank (the highest), the result show that tanks 1 <2 <3 <4. The results of these observations indicate that the behavior of moving and resting Deadema setosum influenced by heavy metal concentrations of Cd that accumulates in the body of Deadema setosumwhich occurs through a process of absorption.

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