{"id":35526,"date":"2018-10-21T22:56:09","date_gmt":"2018-10-21T15:56:09","guid":{"rendered":"https:\/\/www.its.ac.id\/news\/?p=35526"},"modified":"2018-10-21T22:56:09","modified_gmt":"2018-10-21T15:56:09","slug":"manfaatkan-ragi-dosen-its-produksi-biodiesel","status":"publish","type":"post","link":"https:\/\/www.its.ac.id\/news\/manfaatkan-ragi-dosen-its-produksi-biodiesel\/","title":{"rendered":"Manfaatkan Ragi, Dosen ITS Produksi Biodiesel"},"content":{"rendered":"<figure id=\"attachment_35527\" aria-describedby=\"caption-attachment-35527\" style=\"width: 717px\" class=\"wp-caption alignnone\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-35527 size-full\" src=\"https:\/\/www.its.ac.id\/news\/wp-content\/uploads\/sites\/2\/2018\/10\/WhatsApp-Image-2018-10-20-at-18.43.09-e1540137226682.jpeg\" alt=\"\" width=\"717\" height=\"540\" srcset=\"https:\/\/www.its.ac.id\/news\/wp-content\/uploads\/sites\/2\/2018\/10\/WhatsApp-Image-2018-10-20-at-18.43.09-e1540137226682.jpeg 717w, https:\/\/www.its.ac.id\/news\/wp-content\/uploads\/sites\/2\/2018\/10\/WhatsApp-Image-2018-10-20-at-18.43.09-e1540137226682-300x226.jpeg 300w, https:\/\/www.its.ac.id\/news\/wp-content\/uploads\/sites\/2\/2018\/10\/WhatsApp-Image-2018-10-20-at-18.43.09-e1540137226682-355x267.jpeg 355w\" sizes=\"(max-width: 717px) 100vw, 717px\" \/><figcaption id=\"caption-attachment-35527\" class=\"wp-caption-text\">Siti Zullaikah ST MT PhD saat menjadi keynote speaker di Chulalongkorn University, Bnagkok, Thailand<\/figcaption><\/figure>\n<blockquote><p><strong>Kampus ITS,ITS News \u2013<\/strong> Krisis bahan bakar yang melanda dunia juga berimbas pada Indonesia. Hal ini diakibatkan oleh menurunnya persediaan bahan bakar fosil dan harganya yang cenderung tidak stabil. Selain itu, dunia juga dihadapkan pada permasalahan pemanasan global yang timbul akibat penggunaan bahan bakar fosil. Latar belakang inilah yang mendorong dosen Institut Teknologi Sepuluh Nopember (ITS) Surabaya, Siti Zullaikah ST. MT. PhD untuk memanfaatkan ragi <em>L. starkeyi<\/em> sebagai jalan keluar dari permasalahan energi lewat biodiesel yang ramah lingkungan.<\/p><\/blockquote>\n<p>Dikatakan Zulle, sapaannya, ada banyak energi alternatif yang kemudian ditawarkan guna menghadapi situasi tersebut. Tenaga matahari, angin, air, reaksi kimia, dan lainnya tentu memiliki kelebihan masing-masing. \u201cNamun, tidak banyak energi alternatif yang mudah penerapannya pada alat transportasi.<\/p>\n<p>Oleh karena itu, perlu dicari energy alternatif yang lebih ramah lingkungan, dan salah satu energi alternatif \u00a0yang sudah diproduksi secara komersial serta pemanfaatannya tidak perlu modifikasi mesin kendaraan adalah biodiesel,\u201d ujar dosen Teknik Kimia ini.<\/p>\n<p>Zulle juga menambahkan, setidaknya ada dua sumber yang dapat dimanfaatkan dalam pembuatan biodiesel yakni bahan baku yang dapat dikonsumsi (edible) dan bahan baku yang tidak dapat dikonsumsi (inedible).\u00a0 Kebanyakan industri sebenarnya telah memproduksi biodiesel dari bahan baku yang dapat dikonsumsi.<br \/>\n\u201cSeperti pemerintah Indonesia yang memproduksi biodiesel dari minyak kelapa sawit. Namun, biaya produksi yang dapat mencapai 70 persen dari total biaya produksi menjadi masalah utama komersialisasi biodiesel tersebut,\u201d ungkapnya.<\/p>\n<p>Maka, menurut beliau, pemanfaatan bahan baku non konsumsi adalah pilihan utama dalam produksi biodiesel.\u00a0 Pilihan jatuh pada microbial oil (minyak yang dihasilkan mikroba) yang dihasilkan ragi jenis oleaginous, secara spesifik menggunakan L.starkeyi sebagai objek penelitiannya sejak 2004.<\/p>\n<p>L.starkeyi mempunyai kandungan minyak yang tinggi hingga 60 persen. Ia juga memiliki komposisi asam lemak yang \u00a0sesuai untuk bahan baku biodiesel. Selain itu, mikroba ini mempunyai siklus produksi yang pendek dan tidak bergantung pada musim dan cuaca, serta mudah untuk dikembangbiakan. \u201cMinyak yang dihasilkan pun lebih mudah diekstraksi dibandingkan dengan minyak yang dihasilkan alga,\u201d bebernya.<\/p>\n<p>Dijelaskan Zulle, rata-rata, ragi ini mengakumulasi minyak dalam proses metabolismenya hingga 40 persen dari biomassanya. Namun, dalam kondisi keterbatasan nutrisi, mereka dapat mengakumulasi minyak melebihi 70 persen dari biomassa. \u201cRagi oleaginous adalah mikroorganisme bersel satu (uniseluler), tanpa endotoksin, \u00a0dan bisa direkayasa genetik serta cocok untuk fermentasi dalam skala besar,\u201d jelas doktor lulusan National Taiwan University of Science and Technology (NTUST) ini.<\/p>\n<p>Dari penelitian ini, Zulle berharap, Indonesia memiliki sistem produksi biomassa dan produk berbasis bio yang terintegrasi menggunakan konsep biorefinery. Biorefinery adalah proses eksplorasi biomassa menjadi berbagai produk yang dapat dipasarkan, seperti energi.<\/p>\n<p>\u201cDan penggerak utama untuk pendirian biorefinery adalah pada aspek keberlanjutan (ketersediaan bahan baku). Konsep ini sangat sesuai dengan negara kita, Indonesia, yang kaya akan berbagai macam biomassa, makroalga, mikroalga dan microorganism,\u201d tutupnya. (ion12\/owi)<\/p>\n<figure id=\"attachment_35528\" aria-describedby=\"caption-attachment-35528\" style=\"width: 960px\" class=\"wp-caption alignnone\"><img decoding=\"async\" class=\"size-full wp-image-35528\" src=\"https:\/\/www.its.ac.id\/news\/wp-content\/uploads\/sites\/2\/2018\/10\/WhatsApp-Image-2018-10-20-at-18.43.42-e1540137348661.jpeg\" alt=\"\" width=\"960\" height=\"854\" srcset=\"https:\/\/www.its.ac.id\/news\/wp-content\/uploads\/sites\/2\/2018\/10\/WhatsApp-Image-2018-10-20-at-18.43.42-e1540137348661.jpeg 960w, https:\/\/www.its.ac.id\/news\/wp-content\/uploads\/sites\/2\/2018\/10\/WhatsApp-Image-2018-10-20-at-18.43.42-e1540137348661-300x267.jpeg 300w, https:\/\/www.its.ac.id\/news\/wp-content\/uploads\/sites\/2\/2018\/10\/WhatsApp-Image-2018-10-20-at-18.43.42-e1540137348661-768x683.jpeg 768w, https:\/\/www.its.ac.id\/news\/wp-content\/uploads\/sites\/2\/2018\/10\/WhatsApp-Image-2018-10-20-at-18.43.42-e1540137348661-355x316.jpeg 355w\" sizes=\"(max-width: 960px) 100vw, 960px\" \/><figcaption id=\"caption-attachment-35528\" class=\"wp-caption-text\">Siti Zullaikah ST MT PhD, dosen Teknik Kimia ITS saat menjadi pembicara diacara Women in Science di Kumamoto Jepang<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Kampus ITS,ITS News \u2013 Krisis bahan bakar yang melanda dunia juga berimbas pada Indonesia. Hal ini diakibatkan oleh menurunnya persediaan bahan bakar fosil dan harganya yang cenderung tidak stabil. Selain itu, dunia juga dihadapkan pada permasalahan pemanasan global yang timbul akibat penggunaan bahan bakar fosil. Latar belakang inilah yang mendorong dosen Institut Teknologi Sepuluh Nopember [&hellip;]<\/p>\n","protected":false},"author":33,"featured_media":35527,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[14,1],"tags":[],"class_list":["post-35526","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-berita-utama","category-riset-dan-teknologi"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Manfaatkan Ragi, Dosen ITS Produksi Biodiesel - ITS News<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.its.ac.id\/news\/manfaatkan-ragi-dosen-its-produksi-biodiesel\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Manfaatkan Ragi, Dosen ITS Produksi Biodiesel - ITS News\" \/>\n<meta property=\"og:description\" content=\"Kampus ITS,ITS News \u2013 Krisis bahan bakar yang melanda dunia juga berimbas pada Indonesia. 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