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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Pengabdian Magister Pendidikan IPA Chemistry Education Practice Jurnal Ilmiah Profesi Pendidikan Journal of Classroom Action Research Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Jurnal Pijar MIPA Jurnal Pendidikan dan Pengabdian Masyarakat Analit: Analytical and Environmental Chemistry Jurnal Sains dan Kesehatan
Yayuk Andayani
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Immunology & microbiology Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Other

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Journal : Jurnal Penelitian Pendidikan IPA (JPPIPA)

 1 
PENGARUH EKSTRAK ETANOL DAUN JAMBU AIR (SYZYGIUM AQUEUM) TERHADAP BAKTERI ISOLAT KLINIS Titi Hariyati; Dwi Soelistya Dyah Jekti; Yayuk Andayani
Jurnal Penelitian Pendidikan IPA Vol. 1 No. 2 (2015): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v1i2.16

Abstract

Syzygium aqueum plant of the family Myrtaceae is native of Malaysia and Indonesia and is known as the water rose. The active compound is useful as an antibacterial. This study aimed to determine the effects of ethanol extracts of guava leaves (S. aqueum) as an antimicrobial against clinical isolates bacteria in vitro. The design used in experiment was a Completely Randomized Design (CRD). Data were analyzed using the Kruskal-Wallis test. Results of statistical analysis using SPSS 20 for windows indicated that the ethanol extract of guava leaves has a significant (P<0,05) effect in inhibiting the growth of clinical isolates bacteria. MIC (Minimum Inhibition Concentration) of ethanol extracts for each bacterium can not be determined because the guava leaf extract was very dark. The MBC (Minimum Bacterisidal Concentration) of ethanol extract of guava leaf  for both S. aureus and S. dysenteriae was 20%.  The MBC of the extract for E. coli, S. thypi, V. cholerae was 25%, where as for B. cereus was at concentration of 50%. It can be concluded that guava leaf has highly potential as a source of antimicrobial agent.Keywords:Antibacteria, Guava Leaf, Clinical Isolates Bacteria, Ethanol Extract
PENERAPAN PEMBELAJARAN DENGAN PENDEKATAN KETERAMPILAN PROSES SAINS UNTUK MENINGKATKAN HASIL BELAJAR KIMIA SISWA SMK NEGERI 3 MATARAM Henikusniati -; Yayuk Andayani; Lalu Rudyat Telly Savalas
Jurnal Penelitian Pendidikan IPA Vol. 1 No. 2 (2015): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v1i2.19

Abstract

This study aims to determine the application of science process skills to improve chemistry learning outcomes at SMK Negeri 3 Mataram. This study used a quasi-experimental design with pre-test post-test control group design. Sampling was done by using purposive sampling technique. The research sample for the experimental class were 37 students and 37 students in the control class. Data were retreived using multiple choice test that has been tested for its validity. Data were analyzed using independent sample t-test at a significance level of 0.05. N-Gain value calculation was also used to determine the chemistry learning outcome. The result showed that value of N-Gain in the experimental and control group were 0,45 and 0,42 respectively. The results showed that the science process skills approach increased students learning outcomes to medium category. The results of the t-test in both groups were shown not to be significant (α = 0.05). It can be concluded that there is no significant learning outcomes improvement of experimental group in comparison to the control group.Keywords: Science process skills, Learning outcomes
PENINGKATAN KETERAMPILAN BERPIKIR KRITIS MELALUI MODEL PEMBELAJARAN DISCOVERY LEARNING Devi Qurniati; Yayuk Andayani; Muntari -
Jurnal Penelitian Pendidikan IPA Vol. 1 No. 2 (2015): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v1i2.20

Abstract

The importance of critical thinking skills for students in the study of chemistry, it is necessary to appropriate learning models that can involve students directly in making students active learning and improve students' critical thinking skills. One model that can be applied is discovery learning model learning. The purpose of this study was to determine the increase in critical thinking skills of students learning through discovery learning. This study was an experimental study design with nonequivalent pretest-Posttes Control Group Design. The subjects of the study involves two classes of experimental class and control class. Data collection instruments in the form of test critical thinking skills in the form of matter description. Statistical testing using independent sample t-test were previously tested for normality, homogeneity test at the 0.05 significance level. The results showed no difference in the increase in critical thinking skills in each of the indicators of critical thinking skills.Keywords: Discovery learning, critical thinking skills
SKRINING FITOKIMIA DARI EKSTRAK BUAH BUNCIS (Phaseolus vulgaris L) DALAM SEDIAAN SERBUK Rizki Nugrahani; Yayuk Andayani; Aliefman Hakim
Jurnal Penelitian Pendidikan IPA Vol. 2 No. 1 (2016): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v2i1.38

Abstract

research on the phytochemical screening of extracts of fruit powder beans (Phaseolus vulgaris L). The aims study was determine the content of chemical compound in extract beans that had undergone a process of heating at high temperature and has been stored in a specified time. Classified of chemical compounds would be included flavonoids, alkaloids, phenols, saponins, tannins, steroids and triterpenoids. Results of phytochemical screening showed bean extract contains the chemical compound class of flavonoids, alkaloids, phenols, saponins, steroids and triterpenoids. Keyword: Phytochemic al screening, bean fruit extracts 
PENGEMBANGAN LEMBAR KEGIATAN SISWA (LKS) MODEL LEARNING CYCLE 5E Muhamad Zikrullah; Wildan -; Yayuk Andayani
Jurnal Penelitian Pendidikan IPA Vol. 2 No. 2 (2016): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v2i2.40

Abstract

The aims of this study were to generate 5E learning cycle model student’s work sheet wich suitable to be implemented on subject matter of the reduce-oxidace rections at class X. The method used in this study was according to the model of 4D development were Define, Design, Develop, and Disseminate. The results of limited testing by 6 students and 2 teacher’s chemistry of MAN 1 Mataram and results of the expert validation by 3 validators showed that 5E learning cycle model student’s work sheet was very suitable to be used with scores 3,36, 3,37, dan 3,33 on scale 1-4Keywords: Student’s Work Sheet, 5E Learning Cycle Model
IDENTIFIKASI SENYAWA METABOLIT SEKUNDER PADA HASIL FRAKSINASI EKSTRAK Phaseolus vulgaris L. DENGAN METODE GAS CHROMATOGRAPHY-MASS SPECTROSCOPY (GC-MS) Khurriyatul Khair; Yayuk Andayani; Aliefman Hakim
Jurnal Penelitian Pendidikan IPA Vol. 3 No. 1 (2017): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v3i1.51

Abstract

This research was aimed to identify some classes of secondary metabolite compound on the fractionation results of green bean extract (P. vulgaris L.) using Gas Chromatography-Mass Spectroscopy (GC-MS) method. Green bean was extracted by methanol solvent. Fractionation of methanol extract used Vacuum Liquid Chromatography (VLC) with some variation of eluents such as n-hexane 100%; n-hexane: ethyl acetate (9 : 1 to 1 : 9); and ethyl acetate 100%, produced 11 major fractions.  Based on Thin Layer Chromatography (TLC) analysis using DCM: MeOH (9.5: 0.5) as mobile phases, these 11 major fractions were classified based on their polarity such as non-polar, semi-polar and polar fraction. The results of identification by GC-MS spectrometer showed the presence of secondary metabolites such as monoterpenes in non-polar fraction; in semi-polar fraction was found terpenoids and steroids; in polar fraction was found monoterpenes, phenolic and steroid as the lowest percent area, that is less than 2%. Keyword: P.vulgaris L extract, fractionation, VLC, GC-MS
Co-Authors Agus Abhi Purwoko Aliefman Hakim Anak Agung Ayu Trisna Handayani Avida In Amy Baidowi Baidowi Baiq Fitri Rahmayanti Devi Qurniati Dwi Laksmiwati Dwi Soelistya Dyah Jekti Eka Junaidi Gunawan Gunawan Handa Muliasari Henikusniati - Hidayati, Agriana Rosmalina I Gede Karunia Soenarko I MADE SUDARMA I Made Sujana I Nyoman loka Jeckson Siahaan Khurriyatul Khair Lalu Rudiyat Telly Savalas LALU RUDYAT TELLY SAVALAS Lalu Rudyat Telly Savalas M. Liwa Ilhamdi M. Najamudin Nopriadi Mari’i Mari’i Muhamad Zikrullah Mukhtar Haris Muntari - Muntari Muntari Muti'ah Muti'ah Nabilah Nabilah Ni Made Novi Suryanti Nur Nadhifah Zahra Nurbaiti Rindang Utami Nurwahidah Nurwahidah Rabiatul Adawiyah Ratna Azizah Mashami Rizki Nugrahani, Rizki Saprizal Hadisaputra Sri Nursakinah Sukib Sukib Sumardiyanto Sumardiyanto Sumiati Sumiati Sumiati Sumiati Susilawati Syarifa Wahidah Al Idrus Titi Hariyati Wildan - YUNITA ARIAN SANI ANWAR