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Sarono .
Politeknik Negeri Lampung
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Pemanfaatan Limbah Delignifikasi Bioethanol dari Tandan Kosong Kelapa Sawit Menjadi Surfaktan Natrium Lignosulfonat Widia Rini Hartari; Bigi Undadraja; Febrina Delvitasari; Maryanti; Ersan; Sarono
G-Tech: Jurnal Teknologi Terapan Vol 7 No 3 (2023): G-Tech, Vol. 7 No. 3 Juli 2023
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33379/gtech.v7i3.2786

Abstract

Surfaktan (Surface active agent) merupakan senyawa yang bersifat ampipilik (hidropilik dan hidropobik dalam satu molekul), sehingga dapat diaplikasikan sebagai defoaming, emulsifier, detergency, emuliency, dan lainnya. Tujuan penelitian ini adalah mendapatkan Surfaktan Natrium Lignosulfonat dari limbah proses delignifikasi bioethanol. Metode penelitian dilakukan 2 tahap yaitu delignifikasi TKKS dengan NaOH yang memiliki konsentrasi 10, 20, dan 30%. Tahap kedua analisis rendemen lignin, TSS (total padatan), dan konsentrasi surfaktan natrium lignosulfonat menggunakan spektrofotometer UV-Vis, pH. Data yang diperoleh kemudian dianalisis secara Deskriptif. Hasil surfaktan dengan pengujian Spektrofotometer UV-Vis adalah kandungan surfaktan yang tinggi dan stabil adalah pada konsentrasi NaOH 10% baik dalam waktu 30 menit yaitu 2,480; 2,360; 2,679 dan 60 menit yaitu 2,768; 2,812; 2,878 ppm.
THE EFFECT OF PRESERVATION METHODS ON THE STORAGE OF YELLOW PUMPKIM PUREE Sarono Sarono; Yatim R. Widodo
Jurnal Pengembangan Agroindustri Terapan Vol 1 No 1 (2022)
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jupiter.v1i1.2652

Abstract

Puree is a fruit paste with a moisture content of about 60% of the process of steaming and crushing the fruit or often called a ready-to-cook (RTC) product. One of the problems of this puree is that high moisture content causes the puree to easily be damaged. The purpose of this study was to determine the effect of storage temperature, addition of sugar, the use of ammonium benzoate to shelf life of pumpkin puree. Treatment of the study were (1) Addition of sugar with level 20%; 30%; 40%; and 50%, (2) addition of sodium benzoate, with level 1,000 ppm, 2,000 ppm, 3,000 ppm, and (3) storage temperature, with room temperature level and cool box. The results showed that (1) Storage at cold temperatures (0-5oC) was more effective to increase shelf life of yellow pumpkin puree compared with addition of sugar and use of ammonium benzoate preservatives, (2), sugar addition to 30% less effective for prolonging life keep the pumpkin puree, (3) The addition of ammonium benzoate to 3,000 ppm can improve the shelf life of the yellow pumpkin puree.
The Effect of Media Composition on The Change of Bag Log Waste Composition and Production of Oyster Mushroom Sarono Sarono; Yana Sukaryana; Sri Astuti
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 13, No 1 (2024): March 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i1.92-101

Abstract

OPEFB has low biodegradability so its utilization is very limited. Oyster mushrooms are mushrooms that are capable of producing enzymes capable of degrading cellulose, hemicellulose, and lignin contained in) OPEFB. The research objective was to determine the effect of the composition of the growing media on the production of oyster mushrooms and changes in the composition of the resulting baglog waste. The study was carried out with the combination treatment of rubber wood and OPEFB, with levels: (a) 100% rubber wood powder and 0% OPEFB, (b) 75% rubber wood powder and 25% OPEFB, (c) 50% rubber wood powder and OPEFB 50%, (d) 25% rubber wood powder and 75% OPEFB, (e) 0% rubber wood powder and 100% OPEFB. Observation of raw material composition, mycelia growth, wet weight of the fungus, biological efficiency, changes in lignin content, cellulose, and hemicellulose before and after being used as a growing medium for oyster mushrooms. The results showed that the fastest mycelial growth occurred in the use of 100% OPEFB media. The highest oyster mushroom production occurred in the media 100% rubber sawdust. The higher the wet weight of the oyster mushrooms produced, the less the weight of the baglog waste produced. The oyster mushroom fermentation process for 60 days was able to reduce the content of 3.39% cellulose, 11.01% hemicellulose, and 1.98% lignin. Keywords: OPEFB, Oyster Mushroom, Cellulose, Hemicellulose, Lignin
The Effect of Media Composition on The Change of Bag Log Waste Composition and Production of Oyster Mushroom Sarono, Sarono; Sukaryana, Yana; Astuti, Sri
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 1 (2024): March 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i1.92-101

Abstract

OPEFB has low biodegradability so its utilization is very limited. Oyster mushrooms are mushrooms that are capable of producing enzymes capable of degrading cellulose, hemicellulose, and lignin contained in) OPEFB. The research objective was to determine the effect of the composition of the growing media on the production of oyster mushrooms and changes in the composition of the resulting baglog waste. The study was carried out with the combination treatment of rubber wood and OPEFB, with levels: (a) 100% rubber wood powder and 0% OPEFB, (b) 75% rubber wood powder and 25% OPEFB, (c) 50% rubber wood powder and OPEFB 50%, (d) 25% rubber wood powder and 75% OPEFB, (e) 0% rubber wood powder and 100% OPEFB. Observation of raw material composition, mycelia growth, wet weight of the fungus, biological efficiency, changes in lignin content, cellulose, and hemicellulose before and after being used as a growing medium for oyster mushrooms. The results showed that the fastest mycelial growth occurred in the use of 100% OPEFB media. The highest oyster mushroom production occurred in the media 100% rubber sawdust. The higher the wet weight of the oyster mushrooms produced, the less the weight of the baglog waste produced. The oyster mushroom fermentation process for 60 days was able to reduce the content of 3.39% cellulose, 11.01% hemicellulose, and 1.98% lignin. Keywords: OPEFB, Oyster Mushroom, Cellulose, Hemicellulose, Lignin
Uji Akurasi GNSS TGS EQ1 : Perangkat GNSS dalam Negeri Akurasi Tinggi sebagai Upaya Percepatan Pemetaan Desa secara Mandiri (TGS EQ1 GNSS Accuracy Test: High Accuracy Domestic GNSS Device as an Effort to Accelerate Village Mapping Independently) Sari, Ema Fitria; Atmanto, Adrian Dwi; Panuntun, Hidayat; Indrawati, Like; Purwanto, Taufik Hery; Hardjo, Karen Slamet; Sarono, Sarono; Prasetyo, Anton; Yudhatama, Dilla
Jurnal Geospasial Indonesia Vol 8, No 2 (2025): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jgise.102396

Abstract

Perkembangan teknologi pada bidang survei dan pemetaan mengakibatkan munculnya perangkat GNSS geodetik yang menawarkan akurasi dan efisiensi dalam pengukuran salah satunya yaitu GNSS TGS EQ1. Produk ini merupakan hasil karya dalam negeri yang diproduksi untuk pengukuran batas desa dengan harga lebih terjangkau. Penelitian ini bertujuan untuk melakukan uji akurasi TGS EQ1 dengan membandingkan hasil ukuran jarak GNSS dengan pita ukur dan total station yang dianggap sebagai data definitif. Pengukuran GNSS dilakukan menggunakan metode RTK dengan 10 kali akuisisi data per titik. Sedangkan pengukuran pita ukur dan total station dilakukan menggunakan metode pulang-pergi dengan 10 data jarak setiap sisinya. Pengukuran dilakukan terhadap 3 geometri pengujian dengan variasi ukuran dan bentuk untuk memastikan konsistensi dan keakuratan hasil. Selanjutnya, dilakukan perhitungan data hasil pengukuran sehingga didapatkan rerata jarak dan simpangan baku setiap sisi serta nilai selisih jarak dari GNSS dengan data definitif. Kemudian dilakukan uji statistik untuk mengetahui signifikansi perbedaan jarak hasil ukuran GNSS dengan pita ukur dan total station. Hasil penelitian menunjukkan bahwa simpangan baku pengukuran GNSS berkisar pada 4.2 sampai dengan 19.2 mm. Selisih jarak  hasil pengukuran GNSS dengan pita ukur dan total station ≤ 3 cm. Berdasarkan uji statistik yang telah dilakukan, Ho diterima yang berarti tidak ada perbedaan yang signifikan antara jarak hasil pengukuran menggunakan GNSS dengan pita ukur dan total station. Dengan demikian, GNSS TGS EQ 1 telah memenuhi persyaratan sesuai dengan Peraturan Menteri Dalam Negeri Republik Indonesia Nomor 45 Tahun 2016 untuk dapat digunakan dalam pengukuran batas desa dengan nilai ketelitian horizontal ≤ 5 cm.
PEMBERDAYAAN MASYARAKAT BERBASIS TEKNOLOGI TEPAT GUNA MELALUI PENGOLAHAN TEH DAUN GAHARU DI LAMPUNG SELATAN Sarono Sarono; Yeni Variyana; Hafiz Luthfi; Subandi Subandi; Amelia Sri Rezki
SWADIMAS: JURNAL PENGABDIAN KEPADA MASYARAKAT Vol 4, No 2 (2026): SWADIMAS EDISI JULI 2026
Publisher : Institut Teknologi dan Bisnis Swadharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56486/swadimas.vol4no2.1275

Abstract

This community service program aims to enhance the economic resilience of agarwood farmers (Aquilaria malaccensis) through the utilization of agarwood leaves into herbal tea products in Sabah Balau Village, South Lampung Regency. The main problem faced by the community is their dependence on resin (gubal) production, which requires a long harvesting period and results in unstable income. In addition, the potential of agarwood leaves as a value-added product has not been optimally utilized due to limitations in knowledge, technology, and processing equipment. The method used is a participatory approach through Focus Group Discussions (FGD), training, technology transfer, and mentoring. This program focuses on processing agarwood leaves into herbal tea, supported by appropriate technology in the form of a tea grinding machine provided to the partners. Evaluation was conducted through pre-tests and post-tests, direct observation, and analysis of community participation levels. The results show a significant improvement in participants’s knowledge and skills, with a participation rate reaching 85% in training and mentoring activities. The provision of a tea grinding machine has demonstrably improved production efficiency and consistency. The resulting agarwood tea product exhibits antioxidant activity with an IC50 value of 0.584 mg/mL based on laboratory testing. In addition, there has been an increase in the partners’ basic understanding of business management. Overall, this program has successfully strengthened community capacity, created new economic opportunities, and supported the sustainability of agroindustry based on local potential.Program pengabdian kepada masyarakat ini bertujuan untuk meningkatkan ketahanan ekonomi petani gaharu (Aquilaria malaccensis) melalui pemanfaatan daun gaharu menjadi produk teh herbal di Desa Sabah Balau, Kabupaten Lampung Selatan. Permasalahan utama yang dihadapi masyarakat adalah ketergantungan pada hasil gubal yang membutuhkan waktu panen lama sehingga menyebabkan ketidakstabilan pendapatan. Selain itu, potensi daun gaharu sebagai produk bernilai tambah belum dimanfaatkan secara optimal akibat keterbatasan pengetahuan, teknologi, dan peralatan pengolahan. Metode yang digunakan adalah pendekatan partisipatif melalui Focus Group Discussion (FGD), pelatihan, transfer teknologi, serta pendampingan. Program ini difokuskan pada pengolahan daun gaharu menjadi teh herbal dengan dukungan teknologi tepat guna berupa mesin penggiling teh yang diserahkan kepada mitra. Evaluasi dilakukan melalui pre-test dan post-test, observasi langsung, serta analisis tingkat partisipasi masyarakat. Hasil kegiatan menunjukkan peningkatan signifikan dalam pengetahuan dan keterampilan peserta, dengan tingkat keterlibatan mencapai 85% dalam kegiatan pelatihan dan pendampingan. Penyerahan alat penggiling teh dapat meningkatkan efisiensi dan konsistensi produksi secara nyata. Produk teh gaharu yang dihasilkan memiliki aktivitas antioksidan dengan nilai IC50 sebesar 0,584 mg/mL setelah dilakukan uji laboratorium. Selain itu, terjadi peningkatan pemahaman dasar manajemen usaha pada mitra. Selanjutnya, program ini berhasil meningkatkan kapasitas masyarakat, menciptakan peluang ekonomi baru, serta mendukung keberlanjutan agroindustri berbasis potensi lokal
Co-Authors Amelia Sri Rezki Annisa Fitri Anton Prasetyo Atmanto, Adrian Dwi Bastaman Syah Chandra Utami Wirawati Devy cendikia Eko Win Kenali Ersan Febrina Delvitasari Hafiz Luthfi Hardjo, Karen Slamet Imam Asrowardi Indrawati, Like maryanti, Maryanti Panuntun, Hidayat Sari, Ema Fitria Sri Astuti Sri Astuti Sri Astuti Sri Handayani Subandi Subandi Sukamto Sukamto Supriyanto Supriyanto Taufik Hery Purwanto Undadraja, Bigi Variyana, Yeni Widia Rini Hartari Yana Sukaryana Yana Sukaryana Yatim R. Widodo Yudhatama, Dilla