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SINTESIS ASAM 9,10-DIHIDROKSI STEARAT (DHSA) MELALUI HIDROLISA EPOKSIDA DARI OKSIDASI ASAM OLEAT DENGAN ASAM PERFORMAT maisaroh, maisaroh; Susetyo, Indra Budi; Rusmandana, Bayu
REAKTOR Volume 16 No. 2 Juni 2016
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.16.2.57-64

Abstract

SYNTHESIS OF 9,10-DIHYDROXYSTEARIC ACID (DHSA) THROUGH HYDROLYSIS EPOXIDE FROM OXIDATION OLEIC ACID AND PERFORMIC ACID. 9,10-dihydroxy stearic acid (DHSA); C18H36O4 is one of hydroxyl fatty acids with hydroxyl groups (OH) and carboxyl groups (-COOH) cause DHSA have unique properties for many applications including as an emulsifier in the oil phase/gel candles and water in cosmetic formulations. This study investigated the formation of DHSA of from oleic acid and performic acid through epoxidation and hydrolysis reactions. Epoxidation was carried out by reacting the oleic acid with formic acid to form performic acid in situ reaction at a temperature of 60-70oC with stirring in order to minimize byproduct, followed hydrolysis obtained DHSA as powder with melting point 86.5oC, iodine value  0.125 g I2/100 g, acid value 171.53 mg KOH/g, the hydroxyl group observed at the absorption band region of 3345.34 cm-1, LCMS analysis results show peak spetrograms-mass at m/z 317,269, with a value m/z is equivalent to molecular weight DHSA.   Keywords: DHSA; epoxidation; hydrolysis; hydroxyl fatty acids; oleic acid Abstrak Asam 9,10-dihidroksi stearat (DHSA) dengan rumus molekul C18H36O4 merupakan senyawa hidroksil asam lemak dengan gugus hidroksil (-OH) dan karboksil (-COOH) menyebabkan DHSA memiliki sifat unik untuk berbagai aplikasi antara lain sebagai emulsifier antara fasa minyak/lilin gel dan air dalam formulasi kosmetik. Penelitian ini bertujuan untuk menghasilkan DHSA dari asam oleat dan asam performat, melalui tahapan reaksi epoksidasi dan hidrolisa. Epoksidasi asam oleat dengan asam performat yang dibentuk secara in situ dilakukan pada suhu reaksi 60-70oC dengan pengadukan untuk meminimalkan reaksi samping, dilanjutkan dengan hidrolisa epoksida diperoleh DHSA berupa serbuk berwarna putih gading dengan titik leleh 86,5oC, bilangan iod ± 0,125 g I2/100 g, bilangan asam 171,53 mg KOH/g, gugus hidroksil teramati menggunakan FTIR pada bilangan gelombang 3345,34 cm-1, yang diperkuat dengan data kromatogram LC-MS yang memberikan puncak spektrogram-massa pada m/z 317.269, dengan harga m/z yang setara dengan Berat Molekul DHSA. Kata kunci: DHSA; epoksidasi; hidrolisa; hidroksil asam lemak; asam oleat
Optimasi Proses Epoksidasi Asam Oleat pada Scaling Up Sintesis Asam 9,10-Dihidroksi Stearat (DHSA) Bench Scale Maisaroh, Maisaroh
Majalah Ilmiah Pengkajian Industri Vol 12, No 1 (2018): Majalah Ilmiah Pengkajian Industri
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/mipi.v12i1.2616

Abstract

Sintesis asam 9,10-dihidroksi stearat (DHSA) dari asam oleat terepoksidasi merupakan salah satu upaya yang akan meningkatkan penggunaan, diversifikasi dan nilai tambah minyak kelapa sawit. Scaling up proses epoksidasi asam oleat dari skala laboratorium ke bench scale (kapasitas 5 L) terjadi perubahan volume dan geometri dari peralatan yang akan mempengaruhi proses epoksidasi itu sendiri sehingga perlu dilakukan observasi terhadap parameter-parameter yang akan digunakan dalam basic dan engineering design. Tujuan dari penelitian ini adalah melakukan scaling up proses konsistensi dari skala laboratorium ke bench scale (kap. 5 L) epoksidasi asam oleat sebagai produk antara sintesis DHSA dalam pengembangan produk turunan kelapa sawit yang akan digunakan sebagai bahan kosmetik. Scaling Up epoksidasi asam oleat dengan asam performat yang dibentuk secara in situ dilakukan menggunakan reaktor 5 liter dengan perbandingan mol asam oleat : asam format : hidrogen peroksida 50% = 1 : 1,25 : 6. Produk epoksidasi ini akan dilanjutkan untuk dihidroksilasi pada sintesis DHSA sebagai bahan kosmetik.
INTERNALISASI NILAI-NILAI PENDIDIKAN AGAMA ISLAM DALAM PEMBELAJARAN BERBASIS SENTRA DI TAMAN KANAK-KANAK ISLAM TERPADU AL-HIJRAH BINTUJU KABUPATEN TAPANULI SELATAN Maisaroh, Maisaroh
Studi Multidisipliner: Jurnal Kajian Keislaman Vol 5, No 1 (2018)
Publisher : IAIN Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (252.39 KB) | DOI: 10.24952/multidisipliner.v5i1.934

Abstract

This study aims to describe internalizing values of Islamic Religious Education in learning based centre. This research is classified into qualitative research. Data collection instruments used were observation, interviews and document study. Data analysis used is descriptive qualitative analysis. From the research carried out, the results were obtained, namely: 1. The values of Islamic Religious Education internalized in the center of al-Islam are three, namely: a. Faith value b. Value of worship. c. Moral values. Internalization method: Lecture, question and answer, habituation, exemplary, advice, attention and supervision and story. 2. The values of Islamic Religious Education that are internalized in a language center are three, namely: a. Faith value. b. Value of worship. c. Moral values. 3. There are three values that are internalized in the cognitive center, namely: a. value of faith. b. value of worship. c. Moral values. 4. The values internalized in the center of science are the values of aqeed and morals.
KONSEP PENDIDIKAN ISLAM MENURUT IBNU KHALDUN DAN RELEVANSINYA TERHADAP PELAKSANAAN PENDIDIKAN ISLAM DI INDONESIA Maisaroh, Maisaroh
Studi Multidisipliner: Jurnal Kajian Keislaman Vol 4, No 1 (2017)
Publisher : IAIN Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (412.045 KB) | DOI: 10.24952/multidisipliner.v4i1.925

Abstract

Ibn Khaldun is the one who always dissatisfied with the knowledge obtained, so that he learns from many teachers. It includes people who are not only good at LMU Islam, but also in the general sciences, such as history, economics, sociology, anthropology and others. He is also famous for educators. He developed and developing theories about pedagogical he poured in his famous book Muqoddimah. Of the several methods proposed by Ibn Khaldun, there are methods that are relevant to the implementation of Islamic education in Indonesia. Rote methods are still used to memorize mufradat Arabic, qawaid, and the verses of the Qur'an. Dialogue is usually used when the muzakaroh or in discussing any science that are in need of discussion. Widya tours are also conducted by the students, especially the students who boarded dipesantren for several years.
TANTANGAN DAN PELUANG PERBANKAN SYARIAH DALAM PENGEMBANGAN USAHA KECIL DAN MENENGAH UNTUK MEMPERKUAT KESEJAHTERAAN UMAT Maisaroh, Maisaroh; Sumiati, Ati
Econosains: Jurnal Online Ekonomi & Pendidikan Vol 9 No 2 (2011): Econosains: Jurnal Online Ekonomi dan Pendidikan
Publisher : Fakultas Ekonomi Universitas Negeri Jakarta

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Abstract

ABSTRACT Islamic Banking of Indonesia lately grows so rapidly. The function of Islamic banking is as intermediary institution between the excess money parties (depositor) with the lacking money parties (borrower) by using a system of Islamic sharia. The operational purpose of Islamic banking is to participate actively in development process of social and economic life of the community in managing all assets for social welfare. In other side, the growth of small -medium enterprises in Indonesia are also very fast. These types of institutions are identified and proved to be the savior of the economic crisis in Indonesia. But, small and medium enterprises have difficulty constraints of capital and human resources that make these institutions are difficult to thrive. According to the operational purpose, Islamic banking and small-medium enterprises can be partners of mutual benefit. Both parties should build up a quality partnership with optimizing the role of empowerment and facilitation of the Islamic banking to small-medium enterprises using the principles of relationship, togetherness, and humanitarian. Coupled with improving the quality of human resources, services, and partnership, then the partnership is expected not only profitable for both parties, but also more broadly is expected to create social welfare for community.Keywords: Islamic Banking, Small and Medium Enterprises, Social Welfare, Empowerment
UJI KOMPATIBEL EPOKSI METIL OLEAT TURUNAN MINYAK SAWIT SEBAGAI PLASTICIZER PLASTIK KANTONG DARAH Wibowo, Tri Yogo; Astuti, Astuti; Yohanes, Heryoki; Maisaroh, Maisaroh
JURNAL KONVERSI Vol 3, No 2 (2014)
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/konversi.3.2.%p

Abstract

Dalam penelitian ini, plastik PVC dibuat dengan mencampur resin PVC dan plasticizer  epoksi metil  oleat di dalam sebuah mixer dan dicetak dengan metode PVC coating. Plastik PVC yang terbentuk dan kantong darah komersial dikarakterisasi dengan mengukur sifat-sifat mekanik (kuat tarik dan regang ulur) dan sifat kelarutan plasticizer dalam metanol. Adapun plasticizer epoksi metil oleat dibuat melalui rangkaian proses esterifikasi, dan epoksidasi. Epoksi metil oleat yang dihasilkan memiliki sifat-sifat yang lebih baik daripada  produk komersial. Hal ini ditunjukkan oleh angka oksiran yang lebih tinggi dan angka iod yang lebih rendah daripada epoksi komersial. Uji kompatibel epoksi metil oleat sebagai plasticizer untuk produksi lembar plastik PVC menunjukkan hasil yang hampir sama (lebih rendah) dengan lembar plastik kantong darah komersial. Lembar plastik yang dihasilkan memiliki kuat tarik sebesar 15,7 Mpa dan regang putus 315 %. Sementara itu kantong darah komersial memiliki kuat tarik sebesar 19,2 Mpa dan regang putus 340 %. Adanya asam lemak yang tidak bereaksi pada proses epoksidasi menyebabkan berkurangnya kekuatan perpaduan antara matriks dan fase terdispersi. Hal ini yang menyebabkan nilai kuat tarik dan regang putus plastik menurun. Adapun jumlah senyawa ftalat (DOP) yang terlarut dalam metanol dari produk plastik PVC dan kantong darah komersial masing-masing sebesar 42,1% dan 40,2%. Jumlah DOP yang terlarut baik dari produk plastik PVC maupun kantong darah komersial masih memenuhi standar kesehatan. Kata Kunci : oleat, minyak sawit, kantong darah
Efektivitas Pembelajaran Berbasis Masalah Pencemaran oleh Limbah Detergen dalam Meningkatkan Keterampilan Berpikir Kreatif Siswa Maisaroh, Maisaroh; Fadiawati, Noor; Diawati, Chansyanah
Jurnal Pendidikan dan Pembelajaran Kimia Vol 7, No 2 (2018): Jurnal Pendidikan dan Pembelajaran Kimia
Publisher : Universitas Lampung

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Abstract

This study aims to describe the effectiveness problem-based learning of pollution by detergent waste (PBMPLD) to improve students’ creative thinking skills.  The population of this research was all students from XI MIA one of Senior High School in Bandarlampung, the sample research were XI MIA 1 and XI MIA 2 class that obtained by purposive sampling technique.  The research used quasi-experiment with the maching only desaign in pretest-postest and control group.  The data analysis technique used was parametric statistic test using t-test to postestt value.  The result showed that the average posttest of creative thinking skill of experiment class is significantly higher than the average of control class posttest.  The average n-gain in the experimental class is moderate category.  Therefore, it is concluded that the PBMPLD  is effective in enhancing the creative thinking skills.Penelitian ini bertujuan untuk mendeskripsikan efektivitas pembelajaran berbasis masalah pencemaran oleh limbah detergen (PBMPLD) dalam meningkatkan keterampilan berpikir kreatif.  Populasi dalam penelitian ini adalah seluruh siswa kelas XI MIA salah satu SMA di Bandarlampung, dengan sampel penelitian kelas XI MIA 1 dan XI MIA 2 yang diperoleh melalui teknik purposive sampling.  Metode penelitian yang digunakan adalah quasi eksperimen dengan desain the matching only pretest-posttest control group.  Teknik analisis data yang digunakan adalah uji statistik parametrik menggunakan uji t terhadap nilai postes.  Hasil penelitian diperoleh rata-rata postes keterampilan berpikir kreatif kelas eksperimen lebih tinggi secara signifikan daripada rata-rata postes kelas kontrol.  n-gain rata-rata dikelas eksperimen berkategori sedang.  Dengan demikian, disimpulkan bahwa  PBMPLD efektif dalam meningkatkan keterampilan berpikir kreatif.Kata kunci: keterampilan berpikir kreatif, pembelajaran berbasis masalah, pencemaran oleh limbah detergen
PENGARUH KEPEMIMPINAN TRANSFORMASIONAL DAN KEPUASAN KERJA TERHADAP ORGANIZATIONAL CITIZENSHIP BEHAVIOR PADA ISLAMIC BOARDING SCHOOL TINGKAT SMA DI YOGYAKARTA Darmawan, Arief; Maisaroh, Maisaroh
Jurnal Aplikasi Bisnis Volume 17 No. 2, Desember 2017
Publisher : Jurnal Aplikasi Bisnis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jabis.vol17.iss2.art6

Abstract

This research examine the influence of transformational leadership and job satisfaction on organizational citizenship behavior, relationship between variables and how transformational leadership and organizational citizenship behavior are applicated to the school at Islamic boarding high school in Yogyakarta. This research examine four hypothesis, it were there is positive influence between variable of transformational leadership toward organizational citizenship behavior; there is positive influence between job satisfaction variable with organizational citizenship behavior; there is positive influence between variable of transformational leadership and job satisfaction; between transformational leadership variable to organizational citizenship behavior with intervening variable of job satisfaction. Using SPSS 17, analyzing data through several stages of analysis, first, requirements analysis test, path coefficient test, and significance test of path coefficient analysis. The result of path analysis shows that simultaneously independent variables of transformational leadership and job satisfaction have influence on the organization citizenship behavior (f-value 23.455 with a significance level of 0.00).
PENANGANAN GURU BIMBINGAN DAN KONSELING DALAM MENGATASI MASALAH SISWA DI SMK BHAKTI BANGSA BANJARBARU Maisaroh, Maisaroh; Auliah, Nurul
JURNAL MAHASISWA BK AN-NUR : BERBEDA, BERMAKNA, MULIA Vol 4, No 2 (2018)
Publisher : UNIVERSITAS ISLAM KALIMANTAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (31.575 KB)

Abstract

Adolescence is a time of changing life dependence on others. Teenagers begin to determine their way of life. During undergoing the formation of maturity in attitude, various mental changes occur, maybe even shock. Such conditions are strongly influenced by the environment in which he lives. On the other hand teenagers often do not have a place to complain to solve the problems they face. So that as a teenager escape often falls, such as smoking, drinking, narcotics, free sex, and other criminal acts.In this study, researchers used qualitative research methods with descriptive types. The source of the data in this study is the Guidance and Counseling teacher and some problematic students who are known through the interview process with data sources, namely the Guidance and Counseling teacher.The results of this study indicate that the Handling of Efforts carried out by the Guidance and Counseling teacher in overcoming the problems of students in Banjarbaru National Vocational High School is to find the background of the problems faced by students, so the BK teacher and the school are able to solve the problem by looking at the factors or causes why students experience or get the problem. And to give a deterrent effect to students who are in trouble, the BK teacher will give mild or severe sanctions depending on the problems made by students.Efforts that have been made to overcome the problem of students with procedures in the process of handling the problem is to find the cause of the problem and then provide direction and guidance advice so that students are able to understand and the same error does not happen again. And in the process of handling it can not be separated from cooperation with schools such as homerooms, vice principals of student affairs, and the principal. Keywords: The Role of Guidance and Counseling Teachers,
Hak Wali Mujbir Terhadap Anak Gadis Dalam Pernikahan Menurut Pemikiran Asghar Ali Engineer Maisaroh, Maisaroh; Jannah, Miftahul
JURNAL ULUMUL SYAR'I Vol 7 No 1 (2018): Ulumul Syar'i
Publisher : Lembaga Penelitian & Pengabdian Masyarakat (LPPM) STIS Hidayatullah

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Abstract

Penelitian ini dilatarbelakangi oleh perbedaan pendapat antara jumhur ulama dengan para pemikir liberal mengenai hak wali mujbir terhadap anak gadis dalam pernikahan, jumhur ulama berpendapat wali mujbir boleh menikahkan anaknya dengan laki-laki yang ia kehendaki, berbeda dengan Asghar Ali Engineer yang merupakan salah satu pemikir feminis liberal, ia mempunyai pemikiran bahwa wali tidak mempunyai hak untuk memaksa anaknya menikah dengan laki-laki siapapun yang menjadi pilihannya, bahkan Asghar Ali Engineer juga mengatakan izin dari dari salah satu kerabat adalah sesuatu yang harus dilakukan sebelum berlangsungnya akad pernikahan. Pendapat ini di kemukakan oleh beliau karena ia lebih memperhatikan latar belakang dan lebih mengedepankan kesetaraan antara laki-laki dan wanita. Asghar Ali memperkuat pendapatnya dengan berlandaskan pada Q.S. an-Nisᾱ’: 19. Ia juga menafsirkan ayat ini dengan menggunakan metodologi kontekstual, atau lebih melihat konteks ketika ayat tersebut diturunkan.