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All Journal Journal of the Medical Sciences (Berkala Ilmu Kedokteran) Jurnal EduBio Tropika Dentino: Jurnal Kedokteran Gigi Jurnal Ilmiah Mahasiswa Pendidikan Biologi Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education)
Supriatno Supriatno
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Biochemistry, Genetics & Molecular Biology Dentistry Education Immunology & microbiology Neuroscience

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Effect of Salinity on Growth and Vitamin C Content of Aloe Vera (Aloe vera L.) Uswatunnisa Uswatunnisa; Wardiah Wardiah; Supriatno Supriatno
Jurnal Ilmiah Mahasiswa Pendidikan Biologi Vol 2, No 2 (2017): Mei 2017
Publisher : Jurnal Ilmiah Mahasiswa Pendidikan Biologi

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Abstract

Study about "Effect of Salinity on Growth and Vitamin C Content of Aloe (Aloe vera L.) on August-September 2016 in Garden of Agriculture Faculty and Biology Laboratory of Educational Faculty, Syiah Kuala University. The aim of the study is to determine the effect of salinity on growth and Vitamin C content of aloe vera. Study used a Completely Randomized Design (CRD) with the provision of NaCl treatment with different concentrations are: P0 = 0 mM, 150 mM = P1, P2 = 200 mM, 250 mM P3. Parameters that were measured are plant height, leaf number, leaf length, leaf thickness and content of vitamin C in the stem of aloe vera. Data were analyzed by analysis of variance (ANOVA). Further test used in plant height, leaf length and leaf thickness was LSD (Least Significance Difference ) and a further test used in the amount of leaves and content of vitamin C are a test of Duncan. The results showed that there is a real effect (F-count ≥ F 0.05) on the growth of aloe vera on the parameters plant height, leaf number, leaf length, leaf thickness and content of vitamin C. It is concluded that treatment of different salinity give negatively effect for growth, but positively effect on vitamin C content.Keywords: Growth, salinity, Vitamin C, Aloe vera L.
Phytochemical Screening and Antibacterial Test of Ethanolic Extract of Kawista (Limonia acidissima L.) from Aceh Besar against Escherichia coli Audia Anda Rini; Supriatno Supriatno; Hafnati Rahmatan
Jurnal Ilmiah Mahasiswa Pendidikan Biologi Vol 2, No 1 (2017): Pebruari 2017
Publisher : Jurnal Ilmiah Mahasiswa Pendidikan Biologi

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Kawista is one of plant that is used as traditional medicine. One of the utilization of kawista is the consumtion of this unripe fruit to cure diarrhea. Etanolic extract of this fruit contains phytochemical components that has antibacterial activity. Study about Phytochemical Screening and Antibacterial Test of Ethanolic Extract of Kawista from Aceh Besar against Escherichia coli has been conducted on June 27 until July 14, 2016. The aims of the study is to determine phytochemical contents of ethanolic extract of fruit pulp of kawista and the effect of various concentrations against the growth of E. coli. Kawista which is used in the study gained from Aceh Besar. Phytochemical test showed that ethanolic extract of fruit pulp of kawista contain various active compounds such as alkaloids, saponins, tannins, triterpenoids, and polyphenols. E. coli that is used in this study were obtained from Microbiology Laboratory of Veterinary Faculty, Syiah Kuala University. The method used in the study is laboratory experiment using a quantitative type of Completely Randomized Design (CRD), which are divided into 7 groups, 5 treatment groups (ethanolic extract of fruit pulp of kawista) and 2 control groups using aquades (negative control) and streptomycin (positive control). Data analysis was performed by using ANOVA (Analysis of Variance) and then proceed with the test of HSD (Honestly Significant Difference) at α 5%. Antibacterial test results showed ethanolic extract of fruit pulp of kawista could inhibit the growth of E. coli (317.5 2.85). The highest inhibitory zone obtained at 500.000 ppm, with an average diameter of 16.141 mm. Conclusion of the study is showing that the extract of kawista pulps has antibacterial activity against E. coli bacterial growth. The higher concentration of the extract, the greater antibacterial activity against E. coli bacterial growth. Keywords: Ethanolic extract of kawista, antibacterial, Escherichia coli.
Penerapan Model Discovery Learning dengan Pemanfaatan Virtual Laboratory untuk Meningkatkan Keterampilan Proses Sains dan Hasil Belajar Peserta Didik pada Materi Sistem Ekskresi Khairuna Khairuna*; Hafnati Rahmatan; M Ali Sarong; Supriatno Supriatno; Andi Ulfa Tenri Pada
Jurnal Pendidikan Sains Indonesia Vol 9, No 2 (2021): APRIL 2021
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (405.039 KB) | DOI: 10.24815/jpsi.v9i2.18875

Abstract

Practical skills play an important role in learning to achieve maximum learning outcomes. Lack of involvement in skills activities has an impact on learning outcomes achieved by students.This study aims to analyze the improvement of science process skills and student learning outcomes by applying the discovery learning model and the use of a virtual laboratory. The research method was a quasi-experimental design with a pretest-posttest control group design. The population was 165 students of class XI IPA who came from two schools. The research sample was 113 students, 57 experimental group and 56 control group. This research was conducted in MAN 1 and MAS Oemar Diyan Aceh Besar, Aceh, Indonesia. The research was conducted in the even semester of the 2019/2020 Academic Year. The parameters measured were science process skills and learning outcomes, data collection instruments were multiple choice questions with pretest-postest techniques. Science process skills data and learning outcomes were analyzed using parametric statistics using the independent sample t test. The results showed the correlation between science process skills and student learning outcomes was obtained r = 0.842, this indicates that between science process skills and student learning outcomes has a positive corelation with strong interpretation after being taught with the application of discovery learning models and the use of virtual laboratory on excretory system topic
Co-Authors Ali Sarong Andi Ulfa Tenri Pada Arlette Setiawan Audia Anda Rini Cut Nurmaliah Cutia Emelda Dina Mellina Putri Djufri Djufri EKA SAFITRI Eka Safitri Hafnati Rahmatan Ilham Maulana Ira Mursyida Ismul Huda Julia Julia KHAIRI SUHUD Khairi Suhud Khairil Khairil Khairuna Khairuna* Lelifajri Lelifajri M Ali S Millati Ahya Muhibbuddin Muhibbuddin mulyati mulyati NAZARUDDIN NAZARUDDIN Nazaruddin Nazaruddin Rahmadi Rahmadi Rinaldi Idroes Risyandi Anwar Rusmawarni Rusmawarni Salmaniah Salmaniah Unang Supratman Uswatunnisa Uswatunnisa Wardiah Wardiah