The Effect of CO2 Injection on Macroalgae Gelidium latifolium Biomass Growth Rate and Carbohydrate Content
Abstract: There are many
species of macroalga grow in marine ecosystem and potentially as raw material
for bioethanol resource. Bioethanol is a conversion result of carbohydrate, one
of macroalgae biomass content. The exploration of macroalgae require
information about growth rate ability to
determine availability in the nature. This research analyze growth rate and
carbohydrate content of marine macroalga Gelidium latifolium on cultivation
using varied injection of carbon dioxide and aeration. The treatments were
control (K), 2000 cc CO2 injection and aeration (P1), 3000 cc CO2 injection and
aeration (P2), 2000 cc CO2 injection without aeration (P3), and 3000 cc CO2
injection without aeration (P4). Samples weight were 3 gram in early
cultivation on laboratorium scale for 42 days observation. The results showed
that the daily growth rate Gelidium latifolium during the study ranged from
0.02-1.06%. The highest daily growth rate was 1.06±0.14% (P2). Carbohydrate
yield was 18.23% in early cultivation then 19.40% (K and P2), 20.40% (P1),
16.87% (K3), and 16.40% (P4) after cultivation. The high of carbohydrates value
may not guarantee the sustainable Gelidium latifolium biomass utilization as
raw material for bioethanol production because of the low growth rate, thus it
is necessary to modified and encourage cultivation method effectively.
Author: Mujizat Kawaroe,
Adriani Sunuddin, Dina Augustine, Dea Fauzia Lestari
Journal Code: jpperikanangg160024
