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All Journal International Journal of Renewable Energy Development Jurnal Penelitian Hasil Hutan Jurnal Sylva Lestari
Ina Winarni, Ina
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Agriculture, Biological Sciences & Forestry Chemistry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Energy Environmental Science Materials Science & Nanotechnology

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PEMBUATAN BIOETANOL DARI EMPULUR SAGU (Metroxylon spp.) DENGAN MENGGUNAKAN ENZIM Komarayati, Sri; Winarni, Ina; Djarwanto, Djarwanto
Jurnal Penelitian Hasil Hutan Vol 29, No 1 (2011): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3057.044 KB) | DOI: 10.20886/jphh.2011.29.1.20-32

Abstract

Sagu (Metroxylonspp.) merupakan salah satu tumbuhan asli Indonesia yang dapat dimanfaatkan sebagai bahan baku bioetanol. Penelitian pembuatan etanol berbahan dasar sagu dilaksanakan dengan menggunakan dua jenis enzim yaitu amilase dan glukoamilase dan bahan baku berupa pati, empulur dan serat pada skala laboratorium dan skala usaha kecil. Tujuan penelitian ini adalah mendapatkan jenis enzim efektif dalam produksi etanol dari pati (tepung), empulur dan serat sagu. Metode penelitian terdiri dari proses liquifikasi dengan penambahan enzim alpha amilase, sakarifikasi diikuti penambahan enzim glukoamilase, fermentasi pada suhu 28 - 30C, pH 5-5,5 berlangsung selama 3 hari dan distilasi pada suhu 78 - 80C. Hasil penelitian menunjukkan bahwa pada skala laboratorium penggunaan enzim alpha amilase 0,18 mL dan enzim glukoamilase 0,15 mL, ragi 0,48 g menghasilkan kadar etanol paling tinggi yaitu 65,55% untuk pati sagu. Kadar etanol yang paling tinggi diperoleh dari kombinasi enzim alpha amilase 0,13 mL dan glukoamilase 0,11 mL, ragi 0,33 g yaitu sebesar 44,84% untuk empulur dan kombinasi enzim alpha amilase 0,13 mL dan glukoamilase 0,11 mL, ragi 0,33 g sebesar 8,26% untuk serat. Hasil penelitian pada skala usaha kecil menunjukkan persentase perolehan etanol dari pati, empulur dan serat sagu berturut-turut 24,00%; 11,00% dan 4,00% dengan kadar etanol masing-masing 91,00%, 71,00% dan 2,68% dan dengan rendemen masing- masing 6,00%; 2,75% dan 0,25%.
APLIKASI ARANG KOMPOS BIOAKTIF PADA BUDIDAYA NILAM (Pogostemon cablin Benth) TERHADAP KUALITAS PRODUK MINYAK NILAM Winarni, Ina; Waluyo, Totok K
Jurnal Penelitian Hasil Hutan Vol 28, No 4 (2010): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2067.184 KB) | DOI: 10.20886/jphh.2010.28.4.406-414

Abstract

Nilam (Pogostemon cablin Benth) merupakan salah satu tanaman penghasil minyak atsiri yang penting karena memiliki potensi strategis di pasar dunia dimana minyak tersebut berfaedah sebagai bahan pengikat aroma wangi pada parfum, kosmetika dan bahan aromaterapi. Terkait dengan uraian tersebut tulisan ini menyajikan tentang pengaruh pemberian arang kompos bioaktif (arkoba) terhadap kualitas minyak atsiri hasil penyulingan daun nilam antara lain rendemen dan kadar patchouli alkohol. Hasil penelitian menunjukkan bahwa penambahan arkoba pada budidaya nilam memberikan pengaruh sangat baik terhadap rendemen minyak nilam, mencapai 3-4,5 %, dengan rata-rata 4 %, sedangkan rendemen minyak nilam yang ditanam tanpa menggunakan arkoba hanya berkisar 2-2,3% (rata-rata 2%). Lebih lanjut kadar patchouli alkohol minyak nilam dengan penggunaan arkoba yaitu 40,01 %, sedangkan yang tanpa diberi arkoba hanya 32,26 %.
KOMPONEN KIMIA DAN KETAHANAN EMPAT JENIS ROTAN Winarni, Ina; Jasni, Jasni
Jurnal Penelitian Hasil Hutan Vol 29, No 1 (2011): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2275.879 KB) | DOI: 10.20886/jphh.2011.29.1.1-9

Abstract

Tujuan penelitian ini adalah untuk mengetahui komponen kimia dan ketahanan empat jenis rotan terhadap serangan bubuk kering sebagai dasar pemanfaatan untuk pembuatan mebel dan peralatan rumah tangga. Jenis rotan yang diteliti yaitu wira (Daemonorops fissa (Miq.) Bl., dahanan (Korthalsia flagellaris Miq.), ahas (Korthalsia angustifolia Bl.) dan kertas (Calamus unifarius H. Wendl.), Kalimantan Tengah dan Sumatera Selatan. Penentuan komponen kimia menggunakan standar TAPPI dan ASTM, sedangkan ketahanan terhadap bubuk Dinoderus minutus Fabr digunakan contoh uji berupa rotan berukuran panjang 2 cm. Hasil penelitian menunjukkan kadar selulosa rotan wira (48,00%), dahanan (53,03%), ahas (46,49%) dan kertas (44,50%). Kadar lignin rotan wira (28,28%), ahas (22,90%), dahanan (25,46%), dan kertas (27,10%). Pengujian terhadap serangga/bubuk rotan, dahanan dan wira termasuk kelas ketahanan II sedangkan rotan ahas dan kertas termasuk kelas ketahanan III. Keempat jenis rotan tersebut, ternyata sesuai sebagai bahan baku untuk perakitan mebelair dan bahan aksesori guna menciptakan nilai tambah produk.
Optimizing the Synthesis of Lignin Derivatives from Acacia mangium to Improve the Enzymatic Hydrolysis of Kraft Pulp Sorghum Bagasse Fatriasari, Widya; Hamzah, Fajar Nur; Pratomo, Bagas Ikhasan; Fajriutami, Triyani; Ermawar, Riksfardini Annisa; Falah, Faizatul; Laksana, Raden Permana Budi; Ghozali, Muhammad; Iswanto, Apri Heri; Hermiati, Euis; Winarni, Ina
International Journal of Renewable Energy Development Vol 9, No 2 (2020): July 2020
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.9.2.227-235

Abstract

The present study is aimed at optimizing the synthesis of Amphipilic lignin derivatives (A-LD) from the isolated lignin of A.mangium black liquor (BL), using the one and two step acid isolation method, and commercial lignin (LS) was used as comparison. The experimental design was conducted using Taguchi method, which consisted of four parameters and two level factors, with reference to the matrix orthogonal array, L8, including temperature, reaction time, amount of polyethylene glycol diglycidylethers (PEGDE) and Kraft lignin (KL). Furthermore, the kraft pulp of sweet sorghum bagasse (SSB) was used as substrate in the enzymatic hydrolysis (NREL method), with addition of A-LD, whose functional group and surface tension were then characterised using ATR-FTIR and surface tension equipment. Conversely, an improvement in the reducing sugar yield (RSY) compared to the control was observed after adding various A-LDs to the substrate during enzymatic hydrolysis. This product was more prospective for L2S than others products under milder circumstances, due to the fact that it possesses the lowest surface tension. Also, Taguchi analysis demonstrated the treatment at 60 °C for 1 h with 3.0 g and 1.0 g of PEDGE and lignin, respectively as the optimum condition, while the amount of lignin present was included as a factor with the propensity to significantly affect A-LD L1S and LS. Therefore, it was established that the A-LDs from A. mangium kraft lignin require milder synthesis conditions, compared to other existing methods and despite the differences in optimum experimental condition for L2S and LS, the functional groups in the IR spectra possessed very identical characteristics. 
Hydrolytic Stability of Sengon-Oriented Strand Board Bonded with Hybrid Phenol-Formaldehyde/Polymeric Methylene Diphenyl Diisocyanate Adhesives Sari, Rita Kartika; Fitrianum, Fadilah; Maulana, Muhammad Iqbal; Hidayat, Wahyu; Winarni, Ina; Iswanto, Apri Heri; Lubis, Muhammad Adly Rahandi
Jurnal Sylva Lestari Vol. 12 No. 3 (2024): September
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v12i3.987

Abstract

The hydrolytic stability of oriented strand board (OSB) is critical to guarantee good performance in humid conditions over the long term. The adhesive system impacts hydrolytic stability in addition to the wood strands. This study aims to investigate the hydrolytic stability of OSB bonded with a hybrid adhesive based on phenol-formaldehyde (PF) and polymeric methylene diphenyl diisocyanate (pMDI) modified with NaOH and CaCO3 catalyst. PF was mixed with each catalyst at approximately 1% of the PF solids content. The pMDI was added to the mixture at 2.5% and 5% of the PF solid content. The hybrid PF/pMDI adhesives were then used for OSB production. The hydrolytic stability of OSB samples was tested at 25°C and 100°C and compared with OSB using unmodified PF as a control. After hydrolysis, OSBs with hybrid PF/pMDI adhesives had lower weight loss than control adhesives at both temperatures. The pH indicates no significant polymer dissolution from the board into the hydrolysis solution. Hybrid PF/pMDI adhesives with a CaCO3 catalyst obtain significantly lower thickness swelling values. The findings of this study have significant implications for developing high-performance, environmentally-friendly OSB products. Keywords: eco-friendly composite, hydrolytic stability, oriented strand board, Paraserianthes falcataria, phenol-formaldehyde
Co-Authors Apri Heri Iswanto Djarwanto Djarwanto Euis HERMIATI Faizatul FALAH Fajriutami, Triyani Fitrianum, Fadilah hamzah, fajar nur Jasni Jasni Laksana, Raden Permana Budi Lubis, Muhammad Adly Rahandi Maulana, Muhammad Iqbal Muhammad Ghozali Pratomo, Bagas Ikhasan Riksfardini Annisa ERMAWAR Rita Kartika Sari Sri Komarayati Totok K Waluyo Wahyu Hidayat Widya FATRIASARI