Pengaruh perbedaan intensitas cahaya terhadap pertumbuhan dan kadar lipid mikroalga Scenedesmus sp. yang dibudidayakan pada limbah cair tapioka

Hasanudin, Muhammad (2012) Pengaruh perbedaan intensitas cahaya terhadap pertumbuhan dan kadar lipid mikroalga Scenedesmus sp. yang dibudidayakan pada limbah cair tapioka. Undergraduate thesis, Universitas Islam Negeri Maulana Malik Ibrahim.

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Abstract

INDONESIA:

Mikroalga dikenal sebagai tumbuhan yang kaya akan nutrisi dan dapat dijadikan sebagai sumber bahan baku biodiesel. Salah satu mikroalga yang berpotensi untuk dikembangkan sebagai penghasil biodiesel adalah Scenedesmus sp. karena memiliki kandungan lipid yang cukup tinggi sekitar 1-40% dari berat kering. Scenedesmus sp. dapat tumbuh dengan cepat meskipun ditumbuhkan dalam medium yang berasal dari limbah pembuatan produk tertentu seperti halnya limbah cair tapioka. Salah satu faktor yang dapat mempengaruhi pertumbuhan dan kadar lipid Scenedesmus sp. adalah intensitas cahaya karena intensitas cahaya memiliki peranan yang penting dalam proses fotosintesis. Optimalisasi intensitas cahaya diharapkan mampu meningkatkan pertumbuhan dan produksi kadar lipid Scenedesmus sp.

Penelitian ini bertujuan untuk mengetahui pengaruh pemberian intensitas cahaya yang berbeda terhadap pertumbuhan dan kadar lipid mikroalga Scenedesmus sp. yang dibudidayakan pada limbah cair tapioka. Perlakuan berupa pemberian intensitas cahaya yang berbeda yaitu 1.000 luks, 2.000 luks, 3.000 luks, 4.000 luks, dan 5.000 luks. Parameter yang diamati adalah jumlah sel dan kadar lipid yang dihasilkan oleh Scenedesmus sp.

Hasil penelitian menunjukkan bahwa semakin tinggi pemberian intensitas cahaya pada batas kisaran optimum, mampu mempercepat pertumbuhan sel serta meningkatkan produksi kadar lipid Scenedesmus sp. yang dibudidayakan pada limbah cair tapioka. Pertumbuhan dan produksi kadar lipid tertinggi dihasilkan pada pemberian intensitas cahaya 5.000 luks dengan nilai rata-rata pertumbuhan 5.375.000 sel/ml dan nilai rata-rata kadar lipid 35,077%. Sedangkan pertumbuhan dan produksi kadar lipid terendah dihasilkan pada pemberian intensitas cahaya 1.000 luks dengan nilai rata-rata pertumbuhan 1.965.000 sel/ml dan nilai rata-rata kadar lipid 1,141 %.

ENGLISH:

Microalgae is known as a plant with full of nutrition and used as a source of biodiesel raw material. One of microalgae potentially developed as a biodiesel production is Scenedesmus sp. because it has very high lipid content of about 1-40% from the dry weight. Scenedesmus sp. can grow fast even grown in a medium from waste of certain product as liquid waste of tapioca. One of the factors influencing growth and lipid level of Scenedesmus sp. is light intensity because having important role in the process of photosynthesis. Optimization of the light intensity is expected to increase the growth and production of lipid level on Scenedesmus sp.

This research aims at finding an influence of giving different light intensity to the growth and lipid level of microalgae Scenedesmus sp. cultivated on the liquid waste of tapioca. The treatment is done by giving the different light intensity, they are 1.000 lux, 2.000 lux, 3.000 lux, 4.000 lux, dan 5.000 lux. The observed parameter is the amount of cell and lipid level produced by Scenedesmus sp.

The finding shows that the higher of giving the light intensity on the optimum turn limit is able to accelerate cell growth as well as increase lipid level production of Scenedesmus sp. cultivated on the liquid waste of tapioca. The growth and the production of the highest lipid level is resulted on giving light intensity of 5.000 luks by the growth average value is 5.375.000 cell/ml and lipid level average percentage is 35,077%. While the growth and the production of the lowest lipid level is resulted on giving light intensity of 1.000 luks with the growth average value is 1.965.000 cell/ml and the lipid level average percentage is 1,141 %.

Item Type: Thesis (Undergraduate)
Supervisor: Romaidi, Romaidi and Nashichuddin, Achmad
Keywords: Intensitas Cahaya; Pertumbuhan; Kadar Lipid; Scenedesmus sp; Light Intensity; Growth; Lipid Level; Scenedesmus sp
Subjects: 06 BIOLOGICAL SCIENCES > 0607 Plant Biology > 060703 Plant Developmental and Reproductive Biology
Departement: Fakultas Sains dan Teknologi > Jurusan Biologi
Depositing User: Dian Anesti
Date Deposited: 03 Aug 2015 04:37
Last Modified: 03 Aug 2015 04:37
URI: http://etheses.uin-malang.ac.id/id/eprint/872

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