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EDUKASI PEMANFAATAN JAHE TANPA LIMBAH (ZERO WASTE) KEPADA KELOMPOK WANITA TANI DI KECAMATAN NAGRAK, SUKABUMI, JAWA BARAT Wahyuni, *Wulan Tri; Batubara, Irmanida; Sarianti, Tintin; Badrunanto, Badrunanto; Nisa, Ulfiatun
Kumawula: Jurnal Pengabdian Kepada Masyarakat Vol 6, No 3 (2023): Kumawula: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kumawula.v6i3.43137

Abstract

Kelompok Wanita Tani (KWT) di Kecamatan Nagrak, Sukabumi memiliki kegiatan bertani komoditas tanaman obat termasuk jahe. Jahe hasil budidaya anggota KWT sejauh ini dijual sebagai jahe segar, simplisia dan minuman kesehatan. Harga jual jahe segar dan simplisia yang cenderung fluktuatif menyebabkan pendapatan petani tidak menentu. Diperlukan dukungan inovasi pengolahan jahe untuk mengoptimalkan pemanfaatan jahe dan meningkatkan pendapatan petani. Tujuan kegiatan pengabdian kepada masyarakat ini adalah memberikan edukasi pemanfaatan jahe tanpa limbah (zero waste) kepada anggota KWT di Kecamatan nagrak, Sukabumi, Jawa Barat. Metode kegiatan meliputi pengukuran pengetahuan anggota KWT mengenai pengolahan jahe melalui pengisian kuesioner, pelatihan pengolahan jahe dengan konsep zero waste untuk menghasilkan beberapa produk turunan, dan evaluasi efektivitas pelatihan melalui pengisian post-test dan lomba pembuatan produk olahan jahe.  Kegiatan ini berlangsung pada bulan Juli hingga Oktober 2022 dan diikuti oleh 29 orang anggota KWT yang berasal dari enam KWT di wilayah Kecamatan Nagrak, Kabupaten Sukabumi. Dampak dari kegiatan ini adalah meningkatnya pengetahuan anggota KWT tentang inovasi pengolahan jahe dengan konsep zero waste. Jumlah peserta yang memiliki pengetahuan mengenai pengolahan jahe dengan konsep zero waste meningkat sebanyak 93,22%. Sementara itu, jumlah peserta yang memiliki pengetahuan mengenai diversifikasi produk olahan jahe meningkat sebanyak 62,76%. Sebagai kesimpulan dari kegiatan ini, kemampuan anggota KWT dalam mengolah jahe menjadi produk yang lebih variatif telah mengalami peningkatan, ditunjukkan dengan kemampuan setiap kelompok menyajikan produk olahan jahe saat kegiatan lomba. Meningkatnya pengetahuan dan keterampilan para anggota KWT dalam pengolahan jahe diharapkan dapat menambah peluang peningkatan pendapatan anggota KWT. The group of female farmers (KWT) in Nagrak District, Sukabumi cultivates medicinal plant commodities, including ginger. Up to now, the KWT members sold ginger as fresh ginger, simplicia, and health drink. Since the price of fresh ginger and simplicia tends to fluctuate, the farmers’ income is also varied. A ginger processing innovation is required to optimize ginger utilization and increase farmers' income. The purpose of this community service activity was to provide education of zero waste ginger utilization and processing for KWT members in Nagrak District, Sukabumi, West Java. The methods included measuring the knowledge of KWT members about ginger processing through questionnaires, training in ginger processing to produce several derivative products by applying zero waste concept and evaluating the effectiveness of the training. The activity was attended by 29 KWT members from six KWTs in the Nagrak District, Sukabumi. The impact of this activity was increasing the knowledge of KWT members about zero waste concept in ginger processing. The number of participants who were aware of the zero waste concept for ginger processing was increased by 93.22%. Meanwhile, the number of participants who possess knowledge about the diversification of ginger products increased by 62.76%. As a conclusion from this activity, the ability of KWT members to process ginger into a more varied product has increased, shown by the ability of each group to present processed ginger products during competition activities. The increasing of knowledge and skills in ginger processing are expected to increase the income of KWT members.
Nonenzymatic Sensor Based on Glassy Carbon Electrode Modified by Platinum Nanoparticles Decorated Reduced Graphene Oxide for Glucose Detection in Human Urine Nisa, Ulfiatun; Iswantini, Dyah; Ahmad, Shahrul Nizam; Mahat, Mohd Muzamir; Putra, Budi Riza; Saskito, Dinda Iryawati Bedy; Wahyuni, Wulan Tri
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 10, No. 2, November 2024
Publisher : Syarif Hidayatullah State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v10i2.40035

Abstract

This research aims to develop a sensitive and selective nonenzymatic electrochemical sensor for glucose detection using a glassy carbon electrode modified with platinum nanoparticles (PtNPs) decorated on reduced graphene oxide (RGO). The structural properties and surface morphology of PtNPs/RGO composite were characterized using Raman spectroscopy and scanning electron microscopy (SEM). In addition, cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques were employed to investigate glucose measurements in human urine samples. The developed sensor shows an increasing anodic peak of glucose with a linear response at a concentration range from 10 to 1000 µM, with a detection limit of 5 µM. The proposed sensor also demonstrated good reproducibility, indicated by the value of relative standard deviation (%RSD) of 3.9%, and maintained its current response over seven consecutive measurements. Moreover, the proposed sensor exhibited high selectivity for glucose detection against several potential interferences, such as potassium (K+), chloride (Cl−), magnesium (Mg2+), ascorbic acid, dopamine, and urea, with recovery values of 96-102%, which are acceptable within the analytical range. Furthermore, this proposed sensor successfully detected glucose in human urine samples, and their concentrations were not significantly different when measured with a commercial glucose sensor.
Nonenzymatic Sensor Based on Glassy Carbon Electrode Modified by Platinum Nanoparticles Decorated Reduced Graphene Oxide for Glucose Detection in Human Urine Nisa, Ulfiatun; Iswantini, Dyah; Ahmad, Shahrul Nizam; Mahat, Mohd Muzamir; Putra, Budi Riza; Saskito, Dinda Iryawati Bedy; Wahyuni, Wulan Tri
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 10, No. 2, November 2024
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v10i2.40035

Abstract

This research aims to develop a sensitive and selective nonenzymatic electrochemical sensor for glucose detection using a glassy carbon electrode modified with platinum nanoparticles (PtNPs) decorated on reduced graphene oxide (RGO). The structural properties and surface morphology of PtNPs/RGO composite were characterized using Raman spectroscopy and scanning electron microscopy (SEM). In addition, cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques were employed to investigate glucose measurements in human urine samples. The developed sensor shows an increasing anodic peak of glucose with a linear response at a concentration range from 10 to 1000 µM, with a detection limit of 5 µM. The proposed sensor also demonstrated good reproducibility, indicated by the value of relative standard deviation (%RSD) of 3.9%, and maintained its current response over seven consecutive measurements. Moreover, the proposed sensor exhibited high selectivity for glucose detection against several potential interferences, such as potassium (K+), chloride (Cl−), magnesium (Mg2+), ascorbic acid, dopamine, and urea, with recovery values of 96-102%, which are acceptable within the analytical range. Furthermore, this proposed sensor successfully detected glucose in human urine samples, and their concentrations were not significantly different when measured with a commercial glucose sensor.
Electrochemical Detection of Thiamine using Differential Pulse Voltammetry at PEDOT:PSS modified Glassy Carbon Electrode Nisa, Ulfiatun; Kuswanto, Aninda Naszwa; Zamilah, Nur; Putra, Budi Riza; Wahyuni, Wulan Tri
Analit : Analytical and Environmental Chemistry Vol. 7, No. 02 October (2022) Analit : Analytical and Enviromental Chemistry
Publisher : Jurusan Kimia FMIPA Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aec.v7i02.2022.p132-144

Abstract

Penelitian ini bertujuan untuk mendeteksi kandungan vitamin B1 (tiamina) pada suplemen vitamin komersial dengan teknik differential pulse voltammetry menggunakan elektrode karbon kaca yang termodifikasi PEDOT:PSS dan membandingkan hasilnya dengan metode spektrofotometri sinar tampak. Investigasi elektrokimia dievaluasi terhadap elektrode karbon kaca termodifikasi PEDOT:PSS dalam parameter kinerja analitik meliputi linearitas, presisi, limit deteksi, dan limit kuantitasi. Berdasarkan hasil studi, puncak oksidasi tiamina terlihat pada potensial sekitar 250 mV vs Ag/AgCl dan intensitas arusnya terukur 2,5 kali lipat lebih besar dibandingkan ketika diukur menggunakan elektrode karbon kaca taktermodifikasi. Selain itu, pengukuran tiamina pada kisaran konsentrasi 1–10 mM menggunakan elektrode karbon kaca termodifikasi PEDOT:PSS menunjukkan nilai yang baik untuk linearitas (R2=0,9913), ketelitian (%SBR 3,9%), batas deteksi dan  kuantitasi berturut-turut adalah 2,5×10-5 M dan 7×10-5M. Berdasarkan hasil pengukuran tiamina pada sampel suplemen vitamin komersial menggunakan elektrode karbon kaca termodifikasi PEDOT:PSS, nilai ketepatan dapat dihitung sebesar 95,86%. Hasil tersebut dibandingkan dengan nilai sebenarnya dan menunjukkan tidak berbeda signifikan ketika diuji dengan t-student pada selang kepercayaan 95%. Kata kunci: Differential pulse voltammetry, PEDOT:PSS, tiamina