creators_name: PUSPA , NURHANAN
creators_id: 1914231016
type: other
datestamp: 2023-09-07 07:47:19
lastmod: 2023-09-07 07:47:19
metadata_visibility: show
title: PENINGKATAN BIODEGRADABILITY AMPAS TAHU
MENGGUNAKAN RAGI ONCOM (Neurospora sitophila)
ispublished: pub
subjects: 630
full_text_status: restricted
abstract: Kandungan bahan organik yang tinggi dalam limbah cair dan limbah padat
(ampas tahu) berpotensi untuk dikonversi menjadi biogas. Namun, serat kasar
lignoselulosa pada ampas tahu dapat mengurangi efisiensi degradasi oleh enzim
hidrolisis. Perlakuan awal (pretreatment) menggunakan ragi oncom dilakukan
untuk membantu proses hidrolisis serat kasar. Ragi oncom mengandung kapang
Neurospora sitophila yang mampu menghasilkan enzim lignoselulotik untuk
membantu menguraikan senyawa lignoselulosa. Penelitian ini bertujuan untuk
mengetahui peningkatan biodegradability ampas tahu dengan pemberian ragi
oncom. Penelitian yang dilakukan menggunakan metode deskriptif dengan dua
faktor yaitu konsentrasi ragi (0%, 2%, 4%, 6%) dan lama waktu pretreatment (0
jam, 24 jam, 48 jam, 72 jam, 96 jam). Pengamatan yang dilakukan meliputi
derajat keasaman (pH), Total Solid (TS), Total Volatile Acid (TVA), Soluble
Chemical Oxygen Demand (S-COD), dan konsentrasi lignoselulosa. Hasil
penelitian yang diperoleh adalah terjadinya peningkaan biodegradability dengan
meningkatnya nilai S-COD mencapai 28.098 mg/L dan nilai TVA sebesar 8.840
mg/L. Selain itu, terjadi penurunan kondisi pH mencapai 5,25, nilai TS sebesar
8,03%, konsentrasi selulosa, hemiselulosa, dan lignin berturut-turut sebesar
14,51%, 35,42%, dan 7,73%.
Kata kunci : Pretreatment, ampas tahu, lignoselulosa, senyawa organik, ragi
oncom

The high content of organic matter in liquid waste and solid waste (tofu dregs) has
the potential to be converted into biogas. However, lignocellulosic crude fiber in
tofu dreg can reduce the efficiency of degradation by hydrolytic enzymes. Initial
treatment (pretreatment) using oncom yeast was carried out to help the hydrolysis
process of crude fiber. Oncom yeast contains the mold Neurospora sitophila
which is capable of producing lignocellulotic enzymes to help decompose
lignocellulosic compounds. This study aims to improve the biodegradability of
tofu dreg by administering oncom yeast. The research was conducted using a
descriptive method with two factors, namely yeast concentration (0%, 2%, 4%,
6%) and length of pretreatment time (0 hour, 24 hours, 48 hours, 72 hours, 96
hours). Observations made included the degree of acidity (pH), Total Solid (TS),
Total Volatile Acid (TVA), Soluble Chemical Oxygen Demand (S-COD), and
concentration of lignocellulose. The research results obtained were an increase in
biodegradability with an increase in the S-COD value reaching 28.098 mg/L and
the TVA value of 8.840 mg/L. In addition, there was a decrease in pH conditions
reaching 5,25, TS value of 8,03%, concentrations of cellulose, hemicellulose, and
lignin respectively 14,51%, 35,42%, and 7,73%.
Keywords : Pretreatment, tofu dreg, lignocellulose, organic compounds, oncom
yeast
date: 2023-08-09
date_type: published
publisher: FAKULTAS PERTANIAN
place_of_pub: UNIVERSITAS LAMPUNG
id_number: 1914231016
citation:   PUSPA , NURHANAN  (2023) PENINGKATAN BIODEGRADABILITY AMPAS TAHU MENGGUNAKAN RAGI ONCOM (Neurospora sitophila).  FAKULTAS PERTANIAN, UNIVERSITAS LAMPUNG.     
document_url: http://digilib.unila.ac.id/75521/1/ABSTRAK.pdf
document_url: http://digilib.unila.ac.id/75521/2/SKRIPSI%20FULL.pdf
document_url: http://digilib.unila.ac.id/75521/3/SKRIPSI%20TANPA%20BAB%20PEMBAHASAN.pdf