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All Journal Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Jurnal Akademika Kimia Ideguru: Jurnal Karya Ilmiah Guru Jurnal Riset Pendidikan MIPA Media Eksakta Jurnal Akademika Kimia Journal of Social Science Jurnal Banua Oge Tadulako JIPI (Jurnal IPA dan Pembelajaran IPA) Jurnal Akademika Kimia
Paulus Hengky Abram
Program Studi Pendidikan Kimia, Fakultas Keguruan Dan Ilmu Pendidikan, Universitas Tadulako, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Education Environmental Science Mathematics Physics Social Sciences Other

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Kinetika Reaksi Hidrolisis Pati Biji Alpukat (Persea americana Mill) dengan Katalis HCl Sitti Rahmawati; Asnila Asnila; Suherman Suherman; Paulus Hengky Abram
JIPI (Jurnal IPA dan Pembelajaran IPA) Vol 4, No 1 (2020): JUNE 2020
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jipi.v4i1.16480

Abstract

One of the plants that can be used as raw material for making sugar is plants that contain starch content such as avocado seeds. This study aims to determine the reaction order, the reaction rate constant from the hydrolysis of avocado seed starch using HCl. The method of this research is to determine the optimum concentration of HCl hydrolysis reaction from avocado seed starch using various concentrations of HCl (0.5 M; 1 M; 1.5 M; 2 M; 2.5 M) at the optimum temperature and stirring time (90oC for 70 minute). The hydrolysis process was followed by neutralization using 5 M NaOH solution and evaporated to obtain concentrated glucose, glucose was analyzed qualitatively and quantitatively by the Benedict method and the phenol sulfuric acid method. Based on the results of the maximum glucose levels obtained from the hydrolysis of variations in the concentration of HCl avocado seed starch, HCl 1.5 M. Furthermore, determine the kinetics of the starch hydrolysis reaction using time variations (30, 40, 50, 60 and 70) minutes at 90oC and concentrations The HCl 1.5 M. reaction order is determined by the intral method and the graph method. Determination of the first order graph method is done by plotting the value of ln [A] versus time, while the second order by plotting the value of 1 / [A] versus time. The first order with a 93% confidence level was obtained from the value of R2 = 0.9312, while the second order was 85% obtained from the value of R2 = 0.8581. Determination of the order of the integral method k value tends to remain in the first order formula with an average of k = 0.01962 minutes-1. Based on the two methods, it can be determined that the kinetics of the avocado seed starch hydrolysis reaction follows a first-order reaction.
INTRODUCTION OF CaO FROM OYSTER AND ECOENZIM FOR MAKING VIRGIN COCONUT OIL Vanny M.A. Tiwow; Paulus Hengky Abram; Sri Hastuti V. Pulukadang; Yinangsih Safitri
Journal Of Social Science (JoSS) Vol 3 No 7 (2024): JOSS : Journal of Social Science
Publisher : Al-Makki Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57185/joss.v3i7.335

Abstract

Virgin coconut oil (VCO) is a form of processed coconut meat that is pure and free from Free fatty acids. VCO is widely known as cooking oil, cosmetics, antioxidants and health benefits, because the ingredients are high in lauric acid. The purpose of this research are to produce VCO by utilizing CaO from oyster and Eco-enzyme for de-emulsifying protein to separated oil from water and to measure both the decreasing of free fatty acid number and the decreased peroxide number as a parameter of the quality of the resulting VCO. Applications of CaO and Eco-enzyme ferry simple just mix both each 0.2 gr, 0.4 gr, 0.6 gr. of CaO and 0.2 mL., 0.4mL., 0.6 mL. of Eco-enzyme with 100 mL. coconut milk stirrer it. After treatments, it can be concluded that: separation of water from oil in the manufacture of VCO from coconut milk can occur using CaO and using Eco-enzyme It means that de-emulsification of protein in coconut milk is working well. To determine the quality of production VCO from CaO de-emulsification found 50.00 % the decreasing of Free Fatty Acid number and the decreasing of peroxide number is 28.57 %. From eco-enzyme de-emulsification the results are 55.55 %, the decrease of the acid number (DAN) and 57.14% the decrease of the peroxide number (DPN).
Analysis of Hard Water Coagulation in Water Sources of Kawatuna using Aloe Vera Plant Baby Melyta Pallar; Paulus Hengky Abram; Purnama Ningsih
Jurnal Akademika Kimia Vol. 9 No. 2 (2020)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2020.v9.i2.pp125-132

Abstract

Aloe vera gel is one of the plants that can be used as a natural coagulant. The chemical content in aloe vera has similarities to the cactus with the presence of mucilage or gel which can be used to purify water. This study aimed to determine the ability of aloe vera gel as a natural coagulant for water purification of Kawatuna water source and to determine the optimum volume of aloe vera gel. The steps of the study were preparing water sample, preparing aloe vera gel, coagulating of water, and analyzing parameters of water qualities i.e hardness, turbidity, color, temperature, pH, and total dissolved solids (TDS). The results showed that aloe vera gel was able to be used as a natural coagulant to purify water with the optimum ratio of 1 mL of aloe vera gel in 500 mL of the water sample. Aloe vera gel reduced turbidity, hardness, and color by 58.33, 15.45, and 50.36%, respectively, with a pH of 4.1, temperatures at 30 oC, and TDS of 77.51%. This study concluded that aloe vera gel able to be used as a coagulant to purify water.
Pengaruh Strategi Pembelajaran Berdiferensiasi terhadap Literasi Sains Siswa Kelas V Sekolah Dasar Parigi Utara Roslina, Roslina; Sakung, Jamaludin M; Wahyono, Unggul; Afadil, Afadil; Abram, Paulus Hengky
Ideguru: Jurnal Karya Ilmiah Guru Vol 10 No 1 (2025): Edisi Januari 2025
Publisher : Dinas Pendidikan, Pemuda dan Olahraga Daerah Istimewa Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51169/ideguru.v10i1.1357

Abstract

The purpose of this study was to determine the effect of learning strategies differentiated learning strategy against l iteration science on natural events material for fifth grade elementary school students in North Parigi sub-district with a total of 56 students. The samples of this study were the fifth grade class of SD Inpres 1 Toboli as the experimental class and SDN Inti P angi as the control class with the same number of students, namely 28 people. This research method uses true experimental research with the research design pretest-posttest nonequivalent control group design , data collection is done by means of observation and science literacy outcome test. Sampling was conducted using the p technique. urposive sampling technique Data analysis used SPSS 23 with the stages of normality test, homogeneity test and T test ( paired T sample). The research results at the time of pretest The average value of science literacy for the control class was 58.78, and the experimental class had an average value of 60.17. The average value of the post-test was 86.13 for the control class and 87.08 for the experimental class. Results output SPSS obtained a significance value smaller than the significance level of 0.05 (0.000 < 0.005) then H 0 is rejected and H 1 is accepted, so it can be concluded that there is an effect of differentiated learning strategies on science literacy on the material on science literacy in the material events nature in grade V elementary schools in the North Parigi sub-district.
Co-Authors Afadil Agustin Tiwow Amram Rede, Amram Anang Wahid M.Diah Annisa Dian Islamiyati Asnila Asnila Baby Melyta Pallar Baharuddin Hamzah Burhan Burhan Denliana H.N. Pakaya Endang Sri Rahayu Erna Erna, Erna Fadlian, Fadlian Hildawianti, Hildawianti Intan, Dey Jamaludin M Sakung Kasmudin Mustapa Minarni Rama Jura Minarni Rama Jura Muhammad Agus Muljanto Mujariah, Mujariah Nur Hikmah Nurdin Rahman Purnama Ningsih Pusung, Widya Astuti Rabasia Rika Rahayu Roslina Roslina, Roslina Rozi, Fachrul Saiyan, Kamir Apoka Sangkota, Vivi Dia A. Setiawati, Eka Lilis Siang Tandi Gonggo Sitti Rahmawati Sri Hastuti V. Pulukadang Suherman Suherman Suherman Suherman Suherman Sulniawati, Sulniawati Tri Santoso Tri Ulandari Astaring Unggul Wahyono Vanny M.A. Tiwow Wartini, Ni Ketut Yinangsih Safitri