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All Journal BERKALA SAINSTEK The Journal of Pure and Applied Chemistry Research JMM (Jurnal Masyarakat Mandiri) Chemistry Indonesian Journal of Chemical Research CHEESA: Chemical Engineering Research Articles Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat Jurnal Kartika Kimia Jurnal Teknologi Jurnal Pijar MIPA Sewagati Indonesian Journal of Science and Education
Helda Wika Amini
Brawijaya university
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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PENINGKATAN NILAI EKONOMI KOPI REMPAH MELALUI MANAJEMEN KADERISASI PETANI KOPI PEREMPUAN DI DESA TANAH WULAN, KABUPATEN BONDOWOSO Darmayanti, Rizki Fitria; Amini, Helda Wika; Savitri, Dyah Ayu; Al Fajri, M. Maktum Muharja
JMM (Jurnal Masyarakat Mandiri) Vol 5, No 4 (2021): Agustus
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (31.837 KB) | DOI: 10.31764/jmm.v5i4.4866

Abstract

Abstrak: Kopi merupakan komoditas andalan perkebunan di Indonesia, utamanya bagi Kabupaten Bondowoso, Jawa Timur. Salah satu pemasok kopi utama di Bondowoso adalah Desa Tanah Wulan, Kecamatan Maesan dimana mata pencaharian utama penduduknya adalah sebagai petani. Mayoritas perempuan berprofesi sebagai ibu rumah tangga sehingga mempunyai banyak waktu luang untuk memproduksi kopi mentah menjadi kopi olahan, sehingga hal ini menjadi obyek pendampingan bagi tim pengabdian untuk melakukan pelatihan pengolahan kopi rempah (KORE) pada tahun 2019. Namun dampak pelaksanaan kegiatan pelatihan pengolahan kopi rempah masih belum maksimal, sehingga sejak tahun 2020 hingga kini Tim Pengabdian berinisiatif melakukan strategi pengurusan sertifikasi industri rumah tangga melalui Produk Industri Rumah Tangga (PIRT) dan mendampingi dalam manajemen kaderisasi perempuan di desa Tanah Wulan.Solusi yang ditawarkan pada kegiatan ini berupa pemberdayaan perempuan melalui manajemen kaderisasi perempuan di Desa Tanah Wulan. Manajemen kaderisasi berguna untuk menciptakan orang-orang yang akan berperan penting dalam kegiatan produksi hingga pemasaran produk KORE sehingga produk KORE mampu berjalan secara berkelanjutan. Kegiatan inti program ini adalah pengurusan PIRT produk KORE dan pendampingan perempuan di desa Tanah Wulan melalui manajemen kaderisasi. Peningkatan nilai ekonomi kopi rempah melalui pengurusan PIRT dan manajemen kaderisasi petani perempuan Desa Tanah Wulan memberikan peluang yang menjanjikan. Selama pelaksanaan program, perempuan petani kopi menunjukkan antusiasme yang tinggi dalam membentuk kader dan melaksanakan usaha KORE yang berkelanjutan.  Abstract:  Coffee is a plantation commodity in Indonesia, especially for Bondowoso Regency, East Java. One of the main coffee suppliers in Bondowoso is Tanah Wulan Village, Maesan District where the main livelihood of the residents is as a farmer. Women work as housewives so they have a lot of free time to produce raw coffee into processed coffee, so this has become an object of assistance for the team to conduct spice coffee processing (KORE) training in 2019. However, the impact of the implementation of the spice coffee processing training is still not maximum, so that since 2020 until now the Team has taken the initiative to carry out a strategy for managing home industry certification through Home Industry Products (PIRT) and assisting in the management of women's regeneration in Tanah Wulan village.The solution offered in this activity is in the form of empowering women through the management of women's regeneration in Tanah Wulan Village. The regeneration management is useful for creating people who will play an important role in production activities to market KORE products so that KORE products can run sustainably. The core activities of this program are the management of KORE product PIRT and women's assistance in Tanah Wulan village through cadre management. The economic value of spiced coffee through improving the management of PIRT and the management of the regeneration of women farmers in Tanah Wulan Village provides the promised opportunities. During program implementation, female coffee farmers showed high enthusiasm in forming cadres and implementing sustainable KORE businesses.
Optimization of Ulva sp. Decomposition using H2SO4 with Microwave-Assisted Hydrolysis Method as Feedstock of Bioethanol Palupi, Bekti; Rizalluddin, Muhammad; Septianti, Kiki; Rahmawati, Istiqomah; Fachri, Boy Arief; Rizkiana, Meta Fitri; Amini, Helda Wika
CHEESA: Chemical Engineering Research Articles Vol. 6 No. 1 (2023)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v6i1.14682.13-25

Abstract

Bioethanol is a renewable energy used to reduce dependence on fossil fuels, which have negative impacts on the environment. Furthermore, Ulva sp. contains high levels of carbohydrates, making it potentially suitable as a raw material for bioethanol production. Therefore, this study aims to determine the optimal decomposition process using the microwave-assisted hydrolysis method with an acid solvent (H2SO4), by examining the effects of acid concentration, hydrolysis time, and microwave power. Optimization was carried out using several parameters such as hydrolysis time, microwave power, and the ratio of raw materials to solvents. The ANOVA test results showed that the hydrolysis variable parameter had a significant effect on the reducing sugar content obtained, evidenced by the R2 value of 0.9892. The highest reducing sugar content of 19.71 mg/mL was produced under the operating conditions of 15 min hydrolysis time, 450 W microwave power, and 0.065 g/mL ratio of raw material to solvents.
Pemanfatan Teknologi Trash Can-Composter (TCC) Berbasis Zero Waste dalam Pengolahan Sampah Organik Penghasil Kompos Amini, Helda Wika; Syarifah, Ratna Dewi; Maulina, Wenny; Shofa, Ghaitsa Zhahira; Sholihah, Athaya Farras; Prasetyani, Tiana Febrianti Eka; Ma'rifah, Binti Ni'matul
Sewagati Vol 8 No 1 (2024)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j26139960.v8i1.821

Abstract

Desa Tanah Wulan menjadi sasaran dalam menerapkan gagasan terletak di Kecamatan Maesan, Kabupaten Bondowoso, Provinsi Jawa Timur. Ketertarikan dalam menerapkan gagasan ini karena faktor dari Desa Tanah Wulan tidak memiliki fasilitas tempat pembuangan akhir (TPA), tempat pembuangan sampah (TPS), bahkan sebagian penduduk yang tidak memiliki tempat sampah memadai di rumah karena tingkat ekonomi dan kesejahteraan yang masih rendah. Permasalahan tersebut memicu penduduk membuang sampah rumah tangga ke lahan kosong, sungai, dan dibakar. Selain itu, penduduk dengan mayoritas mata pencarian sebagai petani, ketika musim panen penduduk serempak membuang sampah jerami dengan cara dibakar. Penduduk belum menyadari manfaat sampah organik. Melihat permasalahan Desa Tanah Wulan, dibuatlah alat yang mendukung agar digunakan oleh para penduduk dalam membuat pupuk kompos organik. Kegiatan pengabdian meliputi (1) kaderisasi ibu rumah tangga; (2) sosialisasi manajemen sampah, (3) sosialisasi cara pembuatan pupuk kompos dan praktek penggunaan alat TCC, (4) evaluasi. Hasil pengabdian ini adalah adanya 13 ibu rumah tangga yang bergabung pada program ini sebagai sebagai kader peduli lingkungan yang diketuai oleh Ibu Asnawati. Selanjutnya ibu-ibu telah memahami cara pemilahan sampah dan mampu memanfaatkan sampah organik menjadi kompos dengan bantuan alat Trash Can Composter (TCC).
Pengaruh Intensitas Cahaya dan Nutrisi Terhadap Laju Pertumbuhan Ulva sp. Palupi, Bekti; Maharani, Regita Gustiayu Pramisti; Wardani, Salza Belila Kusuma; Rizkiana, Meta Fitri; Amini, Helda Wika; Fachri, Boy Arief; Rahmawati, Istiqomah; Muharja, Maktum; Indrayani, Lilin
Jurnal Teknologi Vol. 11 No. 2 (2024): Jurnal Teknologi
Publisher : Universitas Jayabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31479/jtek.v11i2.272

Abstract

Ulva sp. adalah genus makroalga hijau dengan diameter permukaan yang besar. Manfaat dari kapasitas fotosintesis yang tinggi pada Ulva sp. sebagai media penyerapan nutrisi seperti amonium, nitrat, dan fosfor dengan tingkat yang tinggi. Ulva sp. termasuk alga yang tumbuhnya berdasarkan musim, untuk itu diperlukan budidaya guna memenuhi kebutuhan. Penelitian ini bertujuan untuk mengetahui pengaruh intensitas cahaya dan jumlah nutrisi terhadap kadar klorofil total dan laju pertumbuhan spesifik Ulva sp. Variabel yang digunakan adalah intensitas cahaya sebesar 1000 sampai dengan 3000 Lux serta jumlah nutrisi yang digunakan yaitu 0,6 mg/L hingga 1,8 mg/L. Penelitian ini dilakukan dengan lama penyinaran selama 12 jam. Prosedur yang dilakukan berupa pemeliharaan Ulva sp. dengan wadah terkontrol dilanjutkan dengan pengujian kadar nitrogen total, pengujian kadar fosfat, pengujian kadar klorofil, dan laju pertumbuhan spesifik. Didapatkan nilai derajat keasaman atau pH pada wadah penelitian berkisar 6,5 – 8,5, suhu berada di antara 24 – 26°C, dan salinitas 35 – 37 ppt. Hasil analisis menghasilkan data yang baik jika ditinjau dari nilai p-value yang memiliki nilai kurang dari 0,05.   Keywords: aklimatisasi, Ulva sp., nutrisi, klorofil, laju pertumbuhan
Effect of Time Variation on Chlorophyll Concentration in Cocoa Leaf Extraction using the UAE (Ultrasonic Assisted Extraction) Method Rahmawati, Istiqomah; Shabrina, Nadhilah; Fachri, Boy Arief; Amini, Helda Wika; Palupi, Bekti; Rizkiana, Meta Fitri; Nurtsulutsiyah, Nurtsulutsiyah; Pradipta, Shima Nuril; Afwal, Diza Raudhatul; Reza, Muhammad
Jurnal Kartika Kimia Vol 5 No 1 (2022): Jurnal Kartika Kimia
Publisher : Department of Chemistry, Faculty of Sciences and Informatics, University of Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jkk.v5i1.97

Abstract

Until now, Cocoa (Theobroma cacao L.) plantation is a sector that has been continuously cultivated. Cocoa leaves contain chlorophyll, which is an important pigment in photosynthesis as sunlight absorber. The aim of this study is to determine the effect of extraction time to the concentration of chlorophyll in cocoa leaves. The extraction time was varied from 5 to 25 min with constant variables, namely power and ratio of raw materials. In this study, Ultrasonic Assisted Extraction (UAE) method was used due to its effectiveness. The concentration of obtained chlorophyll was determined by using UV-Vis spectrophotometry. The optimum extraction time was 15 min producing concentration of chlorophyll a of 9.39 mg/L, chlorophyll b of 4.78 mg/L, and total chlorophyll of 14.16 mg/L.
Optimization of Microwave Ultrasound Extraction of Biopolymer from using Response Surface Methodology Rahmawati, Istiqomah; Annisa, Yasmin; Farwah, Zilma Aliyah; Adrian, Febri; Anggraini, Ranita Anggi; Fachri, Boy Arief; Reza, Muhammad; Rizkiana, Meta Fitri; Palupi, Bekti; Amini, Helda Wika
Jurnal Kartika Kimia Vol 6 No 2 (2023): Jurnal Kartika Kimia
Publisher : Department of Chemistry, Faculty of Sciences and Informatics, University of Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jkk.v6i2.174

Abstract

This study aims to determine the effect of combining the two extraction methods Microwave Assisted Extraction (MAE) and Ultrasound-Assisted Extraction (UAE) on the yield and content of ulvan polysaccharides from Ulva lactuca with the best operation condition. Algae biomass U. lactuca is abundant, according to its content, U. lactuca contains polysaccharides which can be used as biodegradable plastic materials. The extraction was carried out using Microwave Ultrasound Extraction by varying the microwave power from 100 to 800 watts, the microwave time variations from 10 to 50 minutes, the ultrasonic wave temperature range from 40-80 oC, and the ultrasonic wave time variations from 20 to 50 minutes. Optimization was performed using the response surface methodology center composite design methodology for a total of 28 runs. Several tests were carried out to determine the character of the ulvan polysaccharide, including water content, FT-IR spectroscopy, High-Performance Liquid Chromatography, and its antioxidant activity. The effect of combining Microwave Assisted Extraction (MAE) and Ultrasound-Assisted Extraction (UAE) provides an optimal extraction condition with higher yields and good quality ulvan.
Preparation and Characterization of Cellulose Acetate from Pandanus tectorius via Microwave Irradiation Rizkiana, Meta Fitri; Amrullah, Abdul Malik Karim; Elisah, Nor; Amini, Helda Wika; Palupi, Bekti; Rahmawati, Istiqomah; Fachri, Boy Arief
Indonesian Journal of Chemical Research Vol 12 No 1 (2024): Edition for May 2024
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2024.12-riz

Abstract

This research focuses on extracting cellulose from thorn pandan and evaluating its potential as a raw material for cellulose acetate. Thorn pandan contains polysaccharides, especially cellulose. In its fabrication process, cellulose acetate is produced from cellulose acetylation reaction. Cellulose is extracted using the Microwave-assisted Extraction method with variations in NaOH concentration (1, 2, and 3%), H2O2 concentration (10, 20, and 30%), and time variables (20, 40, and 60 minutes). Extraction optimization was performed with Response Surface Methodology (RSM) model BBD (Box-Behken Design). Several characterizations were carried out to determine the characteristics of cellulose acetate, namely Degree of Acetylation, FT-IR spectroscopy and X-Ray Diffraction (XRD). The highest cellulose yield obtained in the extraction process was 50.7% with a variable of 3% NaOH, 30% H2O2 and 60 minutes. XRD analysis shows the angle value 2θ = 22.53798° of thorn pandan cellulose structure is almost similar to commercial cellulose. FTIR functional group identification of cellulose acetate showed the presence of carbonyl (C=O) and (C-O Acetyl) group, respectively seen at wave numbers 1734 cm-1 and 1256 cm-1. The acetyl content of cellulose acetate from thorn pandan produced is 35.475%. Therefore, thorn pandan biomass has the potential as a raw material for making cellulose acetate.
Polyphenol Extraction from Musa corniculata Peel Using Microwave Assisted Extraction (MAE) Method with Ethanol Solvent Rahmawati, Istiqomah; Sa’roni, Achmad; Wardhani, Maharani Tri; Fachri, Boy Arief; Palupi, Bekti; Rizkiana, Meta Fitri; Amini, Helda Wika; Reza, Muhammad
BERKALA SAINSTEK Vol 12 No 2 (2024)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v12i2.41494

Abstract

Banana peel (Musa corniculata) is one of the superior plants in Indonesia which is rich in polyphenolic compounds as a source of antioxidants. The potential of polyphenolic compounds as antioxidants can be used as an alternative to reduce banana peel waste. This study aims to determine the total content of polyphenols and antioxidant activity of horn banana peel extract. Extraction used the Microwave Assisted Extraction (MAE) method with ethanol solvent and the variables were extraction time (4, 7, and 10 minutes), solvent concentration (50, 73 and 96 %), ratio of simplicia mass to solvent volume (1:12, 1 :8, 1:6 g/mL) with a microwave power of 150 Watt. Determination of polyphenol content using the Folin-Ciocalteau method and the ability of polyphenols as antioxidants were analyzed by DPPH test. This study used the Design Expert 13 Response Surface Methodology software, the Box Behnken type, to determine the extraction parameters for the total polyphenol content. The highest total polyphenol content was obtained at 354.02 mg GAE/g from the combination of parameters 50% solvent concentration, 10 minutes extraction time, and the ratio of horn banana peel powder to 1:8 g/mL solvent.
OPTIMASI EKSTRAKSI SENYAWA FENOLIK DAUN SIRIH MERAH (Piper Crocatum Ruitz & Pav) MENGGUNAKAN METODE MICROWAVE ASSISTED EXTRACTION (MAE) Amini, Helda Wika; Nugroho, Yeremia Prasetya; Rahman, Agus; Rizkiana, Meta Fitri; Rahmawati, Istiqomah; Palupi, Bekti; Fachri, Boy Arief
Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Vol 7, No 3 (2024)
Publisher : Universitas Islam Kalimantan MAB Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/dl.v7i3.16431

Abstract

Karena efek samping yang lebih sedikit daripada pengobatan sintetik, pengobatan menggunakan bahan alami menjadi pilihan populer di Indonesia. Oleh karena itu, diperlukan penelitian lebih lanjut mengenai bahan alami yang dapat digunakan sebagai obat, salah satunya adalah sirih merah. Penelitian ini bertujuan mengetahui kondisi optimal untuk mengekstraksi senyawa fenolik daun sirih merah dengan menggunakan metode Microwave Assisted Extraction (MAE). Penelitian ini menggunakan daun sirih merah ukuran 60 mesh yang telah dikeringkan. Dengan pelarut etanol 96%, daun sirih merah diekstraksi dengan variabel daya microwave 150 watt, 300 watt, dan 450 watt. Rasio bahan terhadap pelarut adalah 0,05 gram/mL, 0,1 gram/mL, dan 0,15 gram/mL. Ekstraksi berlangsung selama 5-15 menit. Analisis hasil penelitian dilakukan dengan analisis total fenol menggunakan metode Folin-Ciocalteu. Pada run ke-8, total fenol tertinggi adalah 0,0736 mg GAE/g, dengan rasio pelarut 0,05 g/mL, waktu ekstraksi 5 menit, dan daya microwave 300 watt.
RETRACTED ARTICLE: Study on Esterification Reaction of Starch Isolated from Cassava (Manihot Esculenta) with Acetic Acid and Isopropyl Myristate Using Ultrasonicator Amini, Helda Wika; Masruri, Masruri; Ulfa, Siti Mariyah
The Journal of Pure and Applied Chemistry Research Vol. 6 No. 2 (2017): Edition of May-August 2017
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.%y.06.02.299

Abstract

This article has been retracted at the request of managing editor.REASON: One of the conditions of submission of a paper for publication is that authors declare explicitly that their work is original and has not prepared and/or appeared in any other publication elsewhere. As such this article represents a severe abuse of the scientific publishing system. The scientific community takes a very strong view on this matter and apologies are offered to readers of the journal that this was not detected during the submission process.Similar article has appeared in http://iopscience.iop.org/article/10.1088/1757-899X/299/1/012079/pdf 
Co-Authors Abdul Malik Karim Amrullah Adrian, Febri Adriansyah, Muhamad Afwal, Diza Raudhatul Anggraini, Ranita Anggi Annisa, Yasmin Aziz, Mohamad Naufal Nizaar Bekti Palupi Boy Arief Fachri Devara, Arighy Zahirah Faiqy Ditta Kharisma Yolanda Putri Dyah Ayu Savitri Elisah, Nor Fachri, Boy Fandora, Ardan Jauza Farwah, Zilma Aliyah Firmansyah, Alex Humaidi, Fakhri Arkaan Indrayani, Lilin Intan Permatasari Istiqomah Rahmawati Lestari, Afrila Tutut Dwijati Ma'rifah, Binti Ni'matul Maharani, Regita Gustiayu Pramisti Masruri Masruri Meta Fitri Rizkiana Muhammad Reza Muharja, Maktum Nugroho, Yeremia Prasetya Nurani, Yukti Nurjannah, Lailia Nurtsulutsiyah, Nurtsulutsiyah Nurul Hidayati Pradipta, Shima Nuril Prasetyani, Tiana Febrianti Eka Rachman, Darryl Akeyla Rahman, Agus Rizalluddin, Muhammad Rizki Fitria Darmayanti Saputri, Ocha Sa’roni, Achmad Septianti, Kiki Shabrina, Nadhilah Shofa, Ghaitsa Zhahira Sholeha, Irdatus Sholihah, Athaya Farras Siti Mariyah Ulfa Sonya Hakim Raharjo Susilowati Syarifah, Ratna Dewi Ulfiani, Khoirun Nisya' Wardani, Salza Belila Kusuma Wardhani, Maharani Tri Wenny Maulina, Wenny