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Widia Rini Hartari
Politeknik Negeri Lampung
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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K KAJIAN GULA REDUKSI MENJADI ALKOHOL DARI TANDAN KOSONG KELAPA SAWIT DENGAN SIMULTANEOUS SACCHARIFICATION AND FERMENTATION (SSF): Widia Rini Hartari; Maryanti Maryanti; Bigi Undadraja
Jurnal Penelitian Pertanian Terapan Vol 21 No 1 (2021)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v21i1.1878

Abstract

Alcohol is closely related to daily life. It is used as a solvent or additional substance in the food, industry, pharmacology, laboratory, and beauty sectors. Empty oil palm bunches waste is the potential to process into alcohol because it contains cellulose that can be transformed into sugar, and the sugar is fermented into alcohol. The objective of this research was to find out the reducing sugar and alcohol produced from empty oil palm bunches. This research was done in two stages. The first stage was the preparation of empty oil palm bunches with basal (NaOH) treatment. The second stage included fermentation with cellulose enzyme (Novozymes Yield CL) for 24 hours and then fermented with Saccharomyces cerevisiae for 72 hours. The substrate concentrations to use were 7.5% and 10% and starter concentrations were 10%, 15%, and 20%. Research data were analyzed by using a completely randomized design (CRD) and then followed with the least significant difference (LSD). The result showed that 7.5% substrate addition produced the highest reducing sugar by 3.014% and then 10% substrate produced 2.686% reducing sugar. The alcohol test result showed that 10% substrate and 20% starter were significantly different by 3.5%, and 7.5% and 10% produced the lowest alcohol by 1%.
Pola Sebaran dan Rendemen Hasil Gliserolisis Enzimatis Campuran CPO (Crude Palm Oil) dan PKO (Palm Kernel Oil) Fizzaria Khasbullah; Murhadi Murhadi; Nurleni Kurniawati; Bigi Undadraja; Widia Rini Hartari
Jurnal Penelitian Pertanian Terapan Vol 22 No 3 (2022)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v22i3.2272

Abstract

The use of oil in the food and non-food industries is increasing with the increasing number of findings on oleochemical synthesis processes that can be applied on an industrial scale. MAGs and DAGs are used as part of fat products and are often associated with other emulsifiers. MAG synthesis can be carried out chemically and enzymatically. The glycerolysis process using lipase enzymes as biocatalysts requires relatively low energy and produces products with better quality. This study uses enzymatic glycerolysis and will observe the distribution pattern of the glycerolysis product which describes the level of completeness of the reaction. The distribution pattern that describes the perfection of the reaction is a distribution pattern that has spots that spread regularly (not random/straight). The experiment was carried out with a single factor and two replications. The data are presented in the form of tables and histograms, then the results are discussed descriptively. Treatment factors, namely the ratio of the mixture of CPO and PKO consisting of 11 ratios of CPO and PKO: 0.2; 0.4; 0.6; 0.8; 1.0; 1,2; 1.4; 1.6; 1.8 and two controls. Based on the observations made, the glycerolysis of a mixture of CPO and PKO in various ratios, produces a pattern of distribution on the TLC plate which is regular and the Rf (Retardation factor) value shows that from closest to furthest are MAG, DAG, ALB, and TAG with Rf 0.01; 0.12; 0.31; 0.57, respectively. The highest MAG yield was produced by the results of glycerolysis of CPO control (83.90%) followed by PKO control (74.90%) and a mixture of CPO-PKO with a ratio of 0.8 (73.71%). The highest yield of MAG-DAG was produced by a mixture of CPO-PKO with a ratio of 1.6 (93.21%) followed by CPO control (91.88%) and a ratio of 0.8 (73.71%). Key Word: CPO, enzymatic glycerolysis, MAG, PKO, TLC.
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.
Rendemen dan Mutu Lateks Pekat dengan Kombinasi Teknologi Penggetaran dan Pendadihan Maryanti; Febrina Delvitasari; Widia Rini Hartari; Sintya Widianti
G-Tech: Jurnal Teknologi Terapan Vol 8 No 1 (2024): G-Tech, Vol. 8 No. 1 Januari 2024
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33379/gtech.v8i1.3785

Abstract

Concentrated latex is a processed natural rubber product with a dry rubber content of 60-64%. Making concentrated latex by centrifugation requires investment in expensive equipment, while making concentrated latex by creaming takes a long time, around 2-3 weeks. One way to speed up the production of concentrated latex is by using a simple tool, namely an orbital vibrator. This research used a Randomized Block Design with 2 factors. Factor I is Vibration Time (V) and factor II is creaming Time (T). The results of the research showed that the length of shaking and creaming time in making concentrated latex had an influence on the yield and quality of concentrated latex except for the pH value, but there was no interaction between these two factors. The quality of concentrated latex that meets ISO 2004 standards is pH (10.1-10.83) and WKM (564.33-618.17 seconds) while KKK (53.74 - 57.64%) and KJP (50.58 – 53.29 %), not yet meeting ISO 2004 standards.
Pembuatan Lateks Pekat Menggunakan Sodium Alginat dengan Mengkombinasikan Metode Pendadihan dan Sentrifugasi Febrina Delvitasari; Maryanti Maryanti; Ersan Ersan; Widia Rini Hartari
G-Tech: Jurnal Teknologi Terapan Vol 8 No 1 (2024): G-Tech, Vol. 8 No. 1 Januari 2024
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33379/gtech.v8i1.3788

Abstract

Peningkatan produksi karet di Provinsi Lampung tidak diimbangi dengan harga karet yang baik, cenderung tidak stabil bahkan menurun. Oleh karena itu, perlu dikembangkan industri pengolahan karet yang bisa diaplikasikan kepada petani, seperti lateks pekat. Tujuan dari penelitian ini adalah untuk mendapatkan kombinasi dosis larutan sodium alginat dan waktu sentrifugasi terbaik dalam pembuatan lateks pekat. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) dua faktor, faktor pertama dosis larutan sodium alginat (0,1%, 0,2%, dan 0,3%) dan faktor kedua yaitu lama waktu sentrifugasi (25 menit, 35 menit dan 45 menit). Hasil penelitian menunjukkan bahwa kombinasi dosis larutan sodium alginat 0,1% dan waktu sentrifugasi 45 menit memiliki hasil terbaik dalam pembuatan lateks pekat dengan nilai pH 11,5, kadar karet kering 63,50%, kadar jumlah padatan 64,89%, dan waktu kemantapan mekanik 620 detik. Perlakuan tersebut belum memenuhi standar mutu ISO 2004.
Karakterisasi Fisik dan Mutu (Kadar Air, Asam Lemak Bebas, dan Angka Lempeng Total) Virgin Coconut Oil (VCO) yang Diperkaya dengan Fermentasi Ragi Roti Bigi Undadraja; Widia Rini Hartari
G-Tech: Jurnal Teknologi Terapan Vol 8 No 1 (2024): G-Tech, Vol. 8 No. 1 Januari 2024
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33379/gtech.v8i1.3798

Abstract

The Virgin Coconut Oil (VCO) fermentation method with baker's yeast is a method that can maintain the quality of the oil. The aim of this research is to determine the quality characteristics of VCO. The research was carried out with three repetitions, and the data obtained was discussed descriptively. The research results showed that the VCO produced by adding 1 gram, 2 gram, and 3 gram of bread yeast still met quality standards in terms of physical characteristics and peroxide value in accordance with SNI 7381:2008, namely a maximum of 2 meq/kg. The parameters of water content and free fatty acid content are in accordance with quality standards according to the APCC (Asian Pacific Coconut Community). And analysis of the total plate number obtained is still within the standard for drinkability, namely 1.0 x 101 CFU/ml.
A Analisis Mutu dan Finansial Virgin Coconut Oil (VCO) Dengan Metode Fermentasi Saccharomyces Cerevisiae Undadraja Bigi, Bigi; Rini Hartari, Widia
Jurnal Penelitian Pertanian Terapan Vol 23 No 4 (2023)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v23i4.3040

Abstract

Coconut meat is the part that is mostly processed into coconut milk, occult oil, and copra. Downstream processing, such as VCO, is an opportunity to increase the economic value of coconut farmers. VCO contains lots of unsaturated fatty acids and antioxidants, which are good for body health. This study aims to determine the quality and antioxidant activity of VCO and its economic feasibility as a business. This research was carried out in two stages, namely the manufacture of VCO by fermentation using the addition of starter Saccharomyces cerevisiae in amounts of 1 gram, 2 grams, and 3 grams. Then the yield was calculated and tested for antioxidant activity, organoleptic color, taste, and aroma. Then the second stage is calculated financially for the VCO business. The data obtained were then analyzed descriptively. The results of the research conducted show that the production of virgin coconut oil (VCO) is enough to be used as a business; it will reach the BEP when it has sold 13 bottles or earned as much as IDR 312,918. For every rupiah spent, a sales profit of 4.79 will be obtained, with a profit per unit of production of IDR 1,187,082, so this VCO business is feasible to develop. The VCO fermentation, according to SNI 7381:2008, is the addition of 1, 2, and 3 grams of baker's yeast. But the high yield and aroma are found in the addition of 2 grams of yeast.
IDENTIFIKASI KOMPONEN DALAM HIDROSOL LIMBAH AGROINDUSTRI MINYAK ATSIRI PALA DI PROVINSI LAMPUNG Utomo, Tanto Pratondo; Hartari, Widia Rini; Hidayati, Sri; Sartika, Dewi; Suharyono, Suharyono
Journal of Agricultural and Biosystem Engineering Research Vol 4 No 2 (2023): Journal of Agricultural and Biosystem Engineering Research: Regular Issue
Publisher : Program Studi Teknik Pertanian, Fakultas Pertanian, Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jaber.2023.4.2.10014

Abstract

Agroindustri minyak atsiri pala selain menghasilkan produk minyak atsiri dalam proses penyulingannya, juga menghasilkan limbah cair berupa hidrosol hasil pemisahan minyak atsiri. Hidrosol yang dihasilkan dari proses penyulingan minyak atsiri pala terdapat dalam jumlah yang besar proses penyulingan membutuhkan air sekitar 30 persen dari berat bahan baku dengan rendemen minyak atsiri pala yang dihasilkan hanya sekitar 10 persen sedangkan hidrosol, yang belum dapat dimanfaatkan sehingga hanya dibuang ke lingkungan, sekitar 20 persen dari berat bahan baku. Agroindustri minyak atsiri pala harus berproduksi secara efektif dan efisien sehingga hidrosol yang dihasilkan harus dapat dimanfaatkan sehingga menghasilkan nilai tambah. Penelitian ini bertujuan untuk mengidentifikasi komponen hidrosol sisa penyulingan minyak atsiri yang diduga masih mengandung komponen aromatik dan lainnya karena masih berbau harum khas pala. Penelitian ini dilaksanakan di salah satu agroindustriminyak atsiri pala di Kabupaten Pesawaran Provinsi Lampung. Hidrosol sisa penyulingan minyak atsiri pala diidentifikasi menggunakan GC-MS yang dilakukan perlakuan pendahuluan SPME dengan mengambil senyawa pada hidrosol dengan fibre. Hasil penelitian menunjukkan bahwa terdapat 15 senyawa yang teridentifikasi dengan persentase area tertinggi adalah Di(2-ethylhexyl)adipate 90,845 % yang berpotensi dapat dimanfaatkan sebagai bahan plasticizer, bahan pelarut kosmetik, dan tekstil. Senyawa-senyawa lain yang teridentifikasi antara lain adalah senyawa yang bersifat antioksidan dan antimikroba seperti asam karboksilat. Pada pengujian aktifitas antioksidan diperoleh % inhibisi mencapai 95,63%, yang artinya sangat tinggi dalam menangkal radikal bebas. Pada pengujian total saponindiperoleh rata-rata 0,05%.
TEKNOLOGI PENGOLAHAN NATA DE COCO DARI LIMBAH AIR KELAPA SEBAGAI UPAYA PENINGKATAN NILAI EKONOMI PADA KWT MENTARI DI DESA WIYONO Maryanti, Maryanti; Delvitasari, Fabrina; Hartari, Widia Rini; Zaqyah, Irene
Jurnal Pengabdian Nasional Vol 5 No 2 (2024)
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jpn.v5i2.3769

Abstract

Desa Wiyono merupakan salah satu desa yang terletak di Kecamatan Gedong Tataan, Kabupaten Pesawaran. Mayoritas penduduk desa Wiyono (70% dari seluruh tenaga kerja) memiliki mata pencaharian sebagai petani. Menurut BPS Pesawaran (2022), produksi kelapa di Kabupaten Pasawaran mencapai 8.121 ton/tahun dengan luas areal 11.238 ha. Tanaman kelapa (Cocos nucifera L) adalah tanaman multifungsi yang seluruh bagiannya memiliki manfaat untuk manusia. Nata de coco adalah suatu produk hasil fermentasi oleh bakteri acetobacter xylinum. Produk ini berbentuk padat, kokoh, kuat, putih, transparan, kenyal dan banyak digunakan sebagai salah satu pangan fungsional karena mengandung serat pangan. Saat ini petani mengalami kesulitan dalam mengolah air kelapa menjadi nata de coco karena ketidaktahuan ilmu pengetahuan dan teknologi yang digunakan, sehingga air kelapa yang dihasilkan hanya dibuang begitu saja sebagai limbah. Kondisi seperti ini tentunya membutuhkan transfer ilmu pengetahuan dan bimbingan dari berbagai pihak. Tim pengusul kegiatan telah merancang metode kegiatan yang diterapkan melalui penyuluhan, demonstrasi, pelatihan, konsultasi, dan bimbingan, serta evaluasi. Setelah program dilakukan diperoleh hasil bahwa pemahaman dan pengembangan teknis teknologi masyarakat meningkat dari 0% menjadi 100% dan penerapan hasil di lapangan sebesar 15%. Dengan dilakukannya transfer ilmu pengetahuan dan teknologi kepada masyarakat khususnya kelompok wanita tani Desa Wiyono, diharapkan air kelapa yang sebelumnya tidak bernilai menjadi memiliki nilai ekonomi yang cukup tinggi.
Pengaruh Limbah Ampas Kopi sebagai Pupuk Organik Cair (POC) pada Pertumbuhan Bibit Kopi Robusta Propelegetim BP 42 X BP 358 di Main Nursery Hartari, Widia Rini; Same, Made; Rahmawati, Dewi; Kusumastuty, Any
JURNAL AGROTROPIKA Vol 23, No 2 (2024): Jurnal Agrotropika Vol 23 No 2, Oktober 2024
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v23i2.9094

Abstract

Coffee drink is a drink extracted from coffee beans that produces spent coffee grounds, which have macro chemical compounds for plants in terms of growth and development, namely Ca, Mg and N, P, K. The purpose of this study was to obtain the best dose of liquid organic fertilizer (LOF) from spent coffee grounds for the growth of coffee seedlings. The study was conducted from January to June 2023 at the Lampung State Polytechnic Practice Park, Bandar Lampung. This study used a Randomized Block Design, consisting of 4 doses of liquid organic fertilizer treatment (P0 = 0, P1 = 50 ml, P2 = 100 ml and P3 = 150 ml per polybag) with the observed variables being plant height, number of leaves, stem diameter and dry root weight at 14 to 84 days after planting (DAF). The results of this study are that the application of LOF from spent coffee grounds affects the height of coffee seedlings at 14 and 28 DAF, the number of leaves at 84 DAF, and the diameter of the stem at the age of 56, 70, 84 DAF, but does not affect the dry root weight. The best treatment is the application of LOF with a dose of 100 ml/polybag which has a major effect on plant height, number of leaves and stem diameter. Keywords: dregs, dose, spent coffee, liquid fertilizer
Co-Authors Any Kusumastuty Cerly Pramuditha, Anjeli Deksono, Giannis Aji Delvitasari, Fabrina Delvitasari, Febrina DEWI RAHMAWATI DEWI SARTIKA DEWI SARTIKA Ersan Ersan Ersan Fahmi, Putri Mariska Febrina Delvitasari Fizzaria Khasbullah Hasbullah, Fizzaria Jakty Kusuma, Jakty Made Same Maryanti Maryanti Maryanti Maryanti maryanti, Maryanti Murhadi Murhadi Nurleni Kurniawati Permana, Hafid Andre Sarono . Sintya Widianti Sri Hidayati Suharyono Suharyono Suharyono, Suharyono Tanto Pratondo Utomo Undadraja Bigi, Bigi Undadraja, Bigi Zaqyah, Irene