Open AccessCarotenoid Content and Weight Gain of Caulerpa racemosa (Chlorophyta, Caulerpaceae) at Several Light Intensities
Author(s) -
Rajuddin Syamsuddin,
Rustam Na,
Abustang Na,
Idil Fitra
Publication year - 2019
Publication title -
international journal of scientific research in science and technology
Language(s) - English
Resource type - Journals
eISSN - 2395-602X
pISSN - 2395-6011
DOI - 10.32628/ijsrst196252
Subject(s) - light intensity , salinity , carotenoid , chlorophyta , saturation (graph theory) , compensation point , seawater , botany , photosynthesis , nitrate , food science , zoology , chemistry , horticulture , biology , algae , ecology , transpiration , mathematics , physics , combinatorics , optics
An experiment was conducted done outdoors in the area of the Wet Laboratory of Faculty of Marine Science and Fisheries, HasanuddinUniversity to examine the influence of several light intensity ranges on carotenoid content and weight gain of the seaweed Caulerparacemosa. Filtered seawater and styrofoam boxes were the cultivation medium and container, used respectvely. Carotenoid content and the weight gain was analyzed in the Water Productivity and Quality Laboratory of FIKP, UNHAS. Carotenoid content was determined spectrometrically, the weight gain, carotenoids content and water quality parameters were statistically and descriptively analyzed, respectively. Low light intensity of 200 – 300 lux was lower than the saturation point resultedlow weight gain due to photoinhibitionand decreased chlorophyll synthesis, greater respiration activity than photosynthesis.Light intensity range of 500 – 600 lux was exceed the saturation point causecarotenoid damage, low weight gain due to photorespiration, decreased nitrate reductase activity, cell damage and death, reducephotosyntheisi and reduce cell size. Light intensity range of 400 – 500 lux was the optimum and saturation point light intensityresultedhigh weight gain. The range of temperature, salinity, pH, ammonium concentration, and magnesium water media during the study was suitable the growth of C.racemosa.