Article Per Year (5 Year)
p-Index From 2021 - 2026
4.379
P-Index
This Author published in this journals
All Journal Jurnal Periodic Jurusan Kimia UNP JURNAL PENDIDIKAN TAMBUSAI Eksakta : Berkala Ilmiah Bidang MIPA Pelita Eksakta CHEDS: Journal of Chemistry, Education, and Science MASALIQ: Jurnal Pendidikan dan Sains Jurnal Pengabdian Pada Masyarakat
Mulia, Melindra
Unknown Affiliation
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Transportation Veterinary Other

Published : 31 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 31 Documents
Search

 1   2   3   4 
Identifikasi Senyawa Metabolit Sekunder Pada Jantung Pisang Kapas (Musa x paradisiaca L.) Yogi Fernanda Saputra; Sri Benti Etika; Melindra Mulia
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 3 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i3.114981

Abstract

Musa x paradisiaca L. or cotton banana is a plant that belongs to the Musaceae family. Almost all parts of this plant can be consumed, one of which is the banana blossom. Banana blossom can be cooked as a vegetable and is useful in treating diabetes. In this study, phytochemical screening was carried out to determine secondary metabolites contained in Musa x paradisiaca L. The results of phytochemical screening showed that Musa x paradisiaca L. contained secondary metabolites of flavonoids, terpenoids, phenolics and saponins, but did not contain alkaloids and steroids.
Uji Fitokimia Ekstrak Metanol Bunga Tumbuhan Bunga Pagoda (Clerodendrum paniculatum L.) Teuku Muhamad Khairudin; Sri Benti Etika; Melindra Mulia
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 3 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i3.114971

Abstract

Research has been carried out on phytochemical screening on the flowers of the pagoda flower plant (Clerodendrum paniculatum L.). This study aims to determine the content of secondary metabolites in the flowers of the pagoda flower plant. The secondary metabolites tested in this study were alkaloid, flavonoid, steroid, triterpenoid, and saponin. The results showed that the flowers of the pagoda flower plant (Clerodendrum paniculatum L.) contained secondary metabolites, namely alkaloid, flavonoid, and saponin.
Antioxidant Activities Extracts N-Hexane, Ethyl Acetate and Methanol of Limau Sundai (Citrus nobilis Lour) Peels Melindra Mulia; Mai Efdi; Afrizal Afrizal; Niza Lian Pernadi; Devi Purnamasari
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 23 No. 04 (2022): Eksakta: Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/eksakta/vol23-iss04/339

Abstract

The Limau Sundai plant (Citrus Nobilis Lour) is widely known in West Sumatra. The fruit of this plant is commonly consumed as a cooking spice. This antioxidant activity test research aims to find out the potential of Lime Sundai peel as a source of antioxidant compounds. The peel of Limau Sundai fruit is ensnared with methanol solvent and concentrated using a rotary evaporator to obtain a coarse extract. The crude extract is then partitioned successively in n-hexane and ethyl acetate so that n-hexane, ethyl acetate, and methanol extracts are obtained. Sundai lime peel has good antioxidant activity against DPPH, which is shown in the ethyl fraction of acetate, methanol, and liquid methanol. The antioxidant activity of the three fractions is smaller than vitamin C and more significant than the hexane fraction. In the ethyl acetate, methanol and methanol/aqueous fractions with concentrations of 1076, 1822, and 1372 ppm in a row can reduce 50% of DPPH radical activity.
Penyuluhan Pembuatan Pupuk Bokashi dari Kotoran Ayam dan Abu Sekam di Nagari Mungka Trisna Kumala Sari; Riga Riga; Isra Yeni; Syamsi Aini; Desy Kurniawati; Romy Dwipa Yamesa Away; Melindra Mulia
Jurnal Pengabdian Pada Masyarakat Vol 7 No 4 (2022): Jurnal Pengabdian Pada Masyarakat
Publisher : Universitas Mathla'ul Anwar Banten

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (429.794 KB) | DOI: 10.30653/002.202274.205

Abstract

COUNSELING ON MAKING BOKASHI FERTILIZER FROM CHICKEN MANURE AND HUSK ASH IN NAGARI MUNGKA. Community activities in the field of livestock are growing in Nagari Mungka, especially raising chickens. However, the processing of chicken manure waste is not handled properly. This may be due to the lack of public knowledge about this waste processing technique. This counseling aims to improve the knowledge and skills of chicken farmers in making bokashi fertilizer from chicken feces in Nagari Mungka, Lima Puluh Kota District. Bokashi fertilizer is a type of organic fertilizer that uses decomposers in the manufacturing process. The basic ingredients for this bokashi fertilizer are chicken feces, husk ash, bran and EM4. The counseling activity includes presentation of material, demonstration and evaluation of activity. Chicken farmers receive the knowledge about the benefits of bokashi fertilizer, how to make it and how to market it if it has the potential to be sold. This activity has a great influence on chicken farmers because this activity is very useful and right on target. Chicken farmers look enthusiastic in participating in the activities. The result of this community service activity is the increased knowledge and skills of breeders in processing chicken manure into bokashi fertilizer and have the desire to try and apply it.
Pelatihan Pembuatan Pupuk Bokashi dan Pakan Lele dari Kotoran Burung Puyuh Kepada Peternak Nagari Mungka Trisna Kumala Sari; Riga Riga; Isra Yeni; Syamsi Aini; Desy Kurniawati; Romy Dwipa Yamesa Away; Melindra Mulia
Jurnal Pengabdian Pada Masyarakat Vol 8 No 2 (2023): Jurnal Pengabdian Pada Masyarakat
Publisher : Universitas Mathla'ul Anwar Banten

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30653/jppm.v8i2.410

Abstract

Belakangan ini usaha peternakan burung puyuh semakin berkembang di Nagari Mungka. Namun pengolahan kotoran burung puyuh dari aktivitas ini belum ditangani dengan baik. Hal ini disebabkan masih minimnya pengetahuan peternak tentang teknologi pengolahan limbah kotoran puyuh. Pelatihan ini bertujuan untuk meningkatkan pengetahuan peternak burung puyuh tentang pemanfaatan kotoran burung puyuh menjadi pupuk bokashi dan pakan lele, sehingga berpotensi untuk meningkatkan profit usaha peternak burung puyuh di masa mendatang. Metode pelaksanaan dilakukan dengan dua cara yaitu dengan memberikan teori dan demonstrasi pembuatan pupuk bokashi dan pakan lele dari kotoran burung puyuh. Edukasi yang diberikan berupa pengetahuan tentang dampak negatif dari kotoran burung puyuh dan manfaatnya jika diolah menjadi pupuk bokashi dan pakan lele, serta bagaimana strategi pemasarannya. Evaluasi dilakukan dengan mengisi kuesioner oleh peternak dan meninjau hasil pelatihan. Dari hasil kuesioner diketahui hampir 80-100% pengetahuan peternak meningkat setelah mengikuti pelatihan. Ini merupakan ilmu baru bagi peternak dan kegiatan ini sangat bermanfaat khususnya bagi peternak burung puyuh. Recently, the quail farming business has been growing in Nagari Mungka. However, the processing of quail feces of this activity has not been properly treated. This is due to the lack of knowledge of farmers about technology of this quail feces waste treatment. This training aims to increase the knowledge of quail farmers on the use of quail feces into bokashi fertilizer and catfish feed, so that it has the potential to increase their business profits in the future. The implementation method is carried out in two ways, namely by providing theory and demonstrating on making bokashi fertilizer and catfish feed from quail feces. The education provided is in the form of knowledge about the negative impact of quail feces and the benefits of quail feces if it is processed into bokashi fertilizer and catfish feed, as well as marketing strategies. Evaluation is carried out by filling out questionnaires by farmers and reviewing the results of the training. From the results of the questionnaire, it is known that almost 80-100% of the knowledge of farmers increase after participating in the training. This is new knowledge for farmers and this activity is very useful, especially for quail farmers.
Edukasi Pengelolaan Sampah Rumah Tangga untuk Mewujudkan Lingkungan Bersih di Kelurahan Teluk Kabung Tengah Kecamatan Bungus Teluk Kabung Kota Padang Desy Kurniawati; Indang Dewata; Sri Benti Etika; Umar Kalmar Nizar; Suryelita Suryelita; Melindra Mulia; Trisna Kumala Sari; Niza Lian Pernadi
Jurnal Pengabdian Pada Masyarakat Vol 8 No 3 (2023): Jurnal Pengabdian Pada Masyarakat
Publisher : Universitas Mathla'ul Anwar Banten

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30653/jppm.v8i3.420

Abstract

Sampah merupakan salah satu persoalan mendasar terhadap lingkungan di Kelurahan Teluk Kabung Tengah, Kecamatan Bungus Teluk Kabung. Pengelolaan yang tidak tepat terhadap sampah menyebabkan pencemaran terhadap lingkungan terutama jika dibuang begitu saja pada aliran sungai yang bermuara pada pantai, bahkan dapat menyebabkan bencana banjir terhadap area pemukiman. Untuk mengatasi dampak pencemaran lingkungan dari pembuangan sampah perlu adanya solusi, yaitu penyuluhan dan edukasi mengenai bagaimana pengelolaan sampah rumah tangga diantaranya dengan memilah sampah sebelum dibuang dan menerapkan metode 3R (reuse, reduce dan recycle). Melalui sosialisasi, edukasi dan aplikasi pada masyarakat khususnya ibu-ibu Pemberdayaan Kesejahteraan Keluarga (PKK), kegiatan pengabdian ini secara keseluruhan dapat menjadi solusi permasalahan sampah dari hulu. Diantara penerapan metode 3R yang telah diaplikasikan pada masyarakat yaitu dengan melakukan daur ulang sampah organik rumah tangga oleh ibu ibu-ibu PKK menjadi beberapa produk yang bernilai ekonomis, yaitu Eco-enzyme, Pupuk Organik Cair (POC), dan kompos. Dengan diberikannya penyuluhan dan edukasi mengenai pengelolaan sampah rumah tangga pada kegiatan pengabdian pada masyarakat di kelurahan Teluk Kabung Tengah Kecamatan Bungus Teluk Kabung pada akhirnya dapat mendukung tercapainya kondisi lingkungan yang bersih, sehat dan nyaman. Waste is one of the fundamental environmental problems in Teluk Kabung Tengah urban village, Bungus Teluk Kabung sub-district. Improper management of waste causes pollution to the environment, especially if it is simply disposed of in the river that empties into the beach, and can even cause floods to residential areas. To overcome the impact of environmental pollution from waste disposal, a solution is needed, namely counseling and education on how to manage household waste, including sorting waste before disposal and applying the 3R method (reuse, reduce and recycle). Through socialization, education and application to the community, especially mothers of Family Welfare Empowerment (PKK), this community service activity can be a solution to the upstream waste problem. Among the applications of the 3R method that have been applied to the community are recycling household organic waste by PKK mothers into several economically valuable products, namely Eco-enzyme, Liquid Organic Fertilizer (POC), and compost. By providing counseling and education on household waste management in community service activities in Teluk Kabung Tengah urban village, Bungus Teluk Kabung sub-district, it can ultimately support the achievement of clean, healthy and comfortable environmental conditions.
Optimasi Ekstraksi Mikroplastik Polystyrene (PS) Dengan Wet Peroxide Oxidation (WPO) Fatma, Winda Faulina; Dewata, Indang; Mulia, Melindra; Alizar, Alizar
Periodic Vol 13, No 2 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i2.125407

Abstract

Plastic pollution is a global problem that is very dangerous if not handled appropriately and systematically. These plastics can enter the environment and will degrade into microplastics due to environmental factors such as light, temperature and humidity. Microplastics are degraded plastics with a size of <5 mm. This microplastic is very dangerous if ingested by living creatures. One of the impacts can cause digestive disorders, cancer and many more. The aim of this research is to obtain an appropriate method for extracting polystyrene microplastics from water samples. The method used is the WPO (wet peroxide oxidation) extraction method. This method uses two solutions, namely Fe(II) 0,05 M as a catalyst to accelerate the oxidation reaction of impurities and H2O2 30% as an OH• producing material which function to oxidize impurities. In the procedure, variations in Fe(II) concentration and heating temperature were carried out. The optimum results obtained were Fe(II) 0,075 M and a heating temperature of 75°C. Apart from that, microplastic characterization was also carried out using FTIR (Fourier Transform InfraRed). Characterization using FTIR shows that the specific functional groups possessed by polystyrene are C-H bending, C=C stretching and C-H stretching at wave numbers 758 cm-1, 1600,97 cm-1 and 2931,90 cm-1, respectively.
Metode Sol Gel Untuk Mengekstraksi Silika Dari Abu Sekam Padi Rosmiyani, Tia; Sari, Trisna Kumala; Alizar, Alizar; Mulia, Melindra
Periodic Vol 12, No 3 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v12i3.118458

Abstract

Rice husk ash (RHA) is a lignocellulosic material such as biomass in other materials that also contain silica. Amorphous silica obtained from rice husk ash is thought to be an important source that can produce silicon carbide, pure silicon and silicon nitride flour. Rice husk ash contains high silica (>60%). Gel silica is ekstracted by adding sodium hydroxide to produce a sodium silicate solution. The silica extraction was carried out by reacting the rice husk ash using 1M NaOH solution at 80°C for 1 hour. Subsequently, it was added 1M HCl to pH 7. Then it was evaporated in an oven at 80°C to constant weight. Based on the results of the FTIR analysis, the absorption peak of silica with a wavelength of 1070.17 cm-1 is similar to the absorption peak of 98% silica with an absorption wavelength of 1054.95 cm-1. The extracted gel silica has an amorphous crystalline form where in the XRD test there is an absorption peak that widens in the range of 2θ = 22
Utilization of Corn Cob Waste into Briquettes as Renewable Fuel in Nagari Lingkuang Aua Bandarajo Syolendra, Dwi Finna; Riga, Riga; Away, Romy Dwipa Yamesa; Saputra, Boni; Mulia, Melindra; Fitri, Bali Yana; Hidayanti, Ermia
Pelita Eksakta Vol 7 No 2 (2024): Pelita Eksakta, Vol. 7, No. 2
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol7-iss2/248

Abstract

Pasaman District is the largest corn producer in West Sumatra Province, one of the villages is Lingkuang Aua Bandarajo, where the majority of the population work as corn farmers. This amount is directly proportional to the amount of corn cob waste produced from agricultural activities. Based on the results of observations and interviews with local communities, it is known that the processing of corn cob waste has not been carried out optimally, because people tend to burn the corn cobs, which has an impact on environmental pollution. One solution that can be provided is to hold training on processing corn cob waste into charcoal briquettes. This PKM activity was carried out offline with 3 sessions, namely a session presenting material regarding business opportunities and how to make corn cob briquettes, practice accompanied by a team and independent practice. Through this PKM activity, it is known that there has been an increase in knowledge about corn cob briquettes by the youth of the village of Aua Bandarajo. The corn cob briquettes produced can be a source of renewable fuel and can also improve the economy of local communities.
DESORPSI ION Cu2+ PADA ADSORBEN SILIKA GEL-GPTMS (glycidoxypropyltrimethoxysilane) TERMODIFIKASI SULFONAT Berlian, Syakhinah; Oktavia, Budhi; Nasra, Edi; Mulia, Melindra
CHEDS: Journal of Chemistry, Education, and Science Vol 8, No 2 (2024)
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/cheds.v8i2.9581

Abstract

Desorpsi adalah tahap di mana molekul, ion atau partikel yang sebelumnya diserap oleh adsorben dilepaskan lagi. Proses ini digunakan untuk meregenerasi adsorben sehingga dapat digunakan kembali. Pada penelitian ini dilakukan desorpsi terhadap kation tembaga yang telah teradsorpsi pada adsorben silika gel-GPTMS yang telah dimodifikasi dengan sulfonat. Penelitian ini bertujuan untuk mengetahui eluen mana yang paling efektif dalam desorbing antara 0,025 M NaCl dan 0,025 M CaCl2. Setelah eluen dengan efisiensi desorpsi yang lebih tinggi telah diidentifikasi, variasi konsentrasi dan laju aliran optimal dilakukan dalam desorpsi kation tembaga. Keberhasilan modifikasi adsorben dan proses desorpsi dan adsorpsi dievaluasi menggunakan FTIR, XRF, titrasi potensiometri, dan AAS. Hasil penelitian menunjukkan bahwa 0,025 M CaCl2 memiliki persentase desorpsi yang lebih tinggi yaitu 95,17% dibandingkan dengan 0,025 M NaCl yang hanya mencapai 59,29%. Pada berbagai konsentrasi CaCl2, dengan kondisi konsentrasi optimal ditemukan pada 0,05 M dengan persentase desorpsi mencapai 100%, dan jumlah Cu2+ yang terdesorpsi adalah 0,1425 mg pada silika gel-GPTMS sulfonat. Oleh karena itu, dapat disimpulkan bahwa ion kalsium berhasil mendesorpsi kation tembaga yang telah teradsorpsi pada silika gel-GPTMS yang dimodifikasi dengan sulfonat.
Co-Authors Afrizal Afrizal Aini, Syamsi Alizar, Alizar Anggriani Sirait, Nova Berlian, Syakhinah Boni Saputra Budhi Oktavia Desy Kurniawati Desy Kurniawati DESY KURNIAWATI Devi Purnamasari Dwi Finna Syolendra Edi Nasra Elfanny Delvia Elsa Yuniarti Fadhilah Fadhilah Fatma, Winda Faulina Fatmawati, Rani Fauzana Gazali Fitri, Bali Yana Fitriani, Dedek Frida Rahmades, Windi Hary Sanjaya Hesty Parbuntari Hidayanti, Ermia Indang Dewata Isra Yeni Mai Efdi Marlini, Rahmida Nadhifah, Azizah Lailatul Niza Lian Pernadi Niza Lian Pernadi Nurul Husna Patricia, Popi Putri, Raisya Pratama Rahadian Zainul Rani Aulia Suhanah Riga Riga Riga, Riga Romy Dwipa Yamesa Away Ronald, Meissa Lifangrha Rosmiyani, Tia Safitri, Nadila Sari, Trisna Kumala Septian Budiman Sherly Kasuma Warda Ningsih Sri Benti Etika Stiadi, Della Rosalyna Suryelita . Syamsi Aini Syamsi Aini Teuku Muhamad Khairudin Trisna Kumala Sari Umar Kalmar Nizar Umar Kalmar Nizar Veronita, Silvi Yeni, Isra Yogi Fernanda Saputra Yuranda, Fitri