Physics

Biology

Horticulture

Food science

Nannochloropsis sp. LMC merupakan jenis fitoplankton yang ditemukan di perairanLampung Mangrove Center. Dalam pembudidayaan perikanan, Nannochloropsis sp.sering digunakan sebagai pakan hidup. Hal ini dikarenakan Nannochloropsis sp.mengandung nilai gizi tinggi, terutama pada kandungan lemaknya. Penelitian inibertujuan untuk mengetahui pertumbuhan, jumlah pasta, dan kandungan lemakNannochloropsis sp. isolat LMC berdasar pemberian pupuk dan dosis NaOH yangberbeda. Penelitian dilaksanakan pada bulan Agustus - November 2018 diLaboratorium Zooplankton, Balai Besar Perikanan Budidaya Laut (BBPBL)Lampung. Penelitian ini menggunakan Rancangan Acak Lengkap Faktorial (RALF)yang terdiri dari dua perlakuan dengan masing-masing tiga kali ulangan. Perlakuanpertama perbedaan pemberian pupuk yaitu pupuk pertanian (P) (Urea 40 ppm, ZA 20ppm, dan TSP 5 ppm) dan pupuk Conwy (C) 1 ppm. Perlakuan kedua pembuatanpasta dengan dosis NaOH berbeda (100 ppm, 125 ppm, 150 ppm, dan 175 ppm).Parameter yang diamati yaitu kepadatan populasi, laju pertumbuhan, waktu generasi,berat pasta, kandungan lemak pasta Nannochloropsis sp. LMC, dan kualitas air. Datapertumbuhan dianalisis menggunakan analisis uji T, serta berat pasta dan kandunganlemak dianalisis menggunakan varian satu arah (ANOVA), bila terdapat hasil berbedanyata maka dilanjutkan dengan uji Beda Nyata Terkecil (BNT) dengan taraf α = 0,05.Hasil penelitian menunjukan bahwa pertumbuhan Nannochloropsis sp. LMC tertinggiterjadi pada perlakuan pemberian pupuk pertanian, jumlah pasta tertinggi dengandosis NaOH 175 ppm C, dan kandungan lemak Nannochloropsis sp. LMC tertinggipada perlakuan 100 ppm P.Kata kunci : Nannochloropsis sp. LMC, pupuk, dosis NaOH, pertumbuhan, dankandungan lemak.abstractNannochloropsis sp. LMC is a type of phytoplankton found in LampungMangrove Center. In the field of aquaculture, Nannochloropsis sp. often used aslive food. This is because Nannochloropsis sp. contains high nutritional value,especially in the fat content. The purpose of this study was to determine thegrowth, weight of pasta, and fat content of Nannochloropsis sp. LMC isolatesbased on fertilizer application and different NaOH doses. The study wasconducted in August - November 2018 at the Zooplankton Laboratory, the Centerfor Marine Aquaculture (BBPBL) Lampung. This study used a FactorialCompletely Randomized Design (CRD) consisting of two treatments with threereplications. The first treatment was the difference in fertilizer application, namelyagricultural fertilizer (P) (Urea 40 ppm, ZA 20 ppm, and TSP 5 ppm) andfertilizer Conwy (C) 1 ppm. The second treatment of making pasta with differentdosages of NaOH (100 ppm, 125 ppm, 150 ppm and 175 ppm). The parametersobserved were population density, growth rate, generation time, weight of pasta,fat content of pasta Nannochloropsis sp. LMC, and water quality. Growth datawere analyzed using T-test analysis, and weight of pasta and fat content wereanalyzed using one-way variants (ANOVA), if there were significantly differentresults followed by the Least Significant Difference (LSD) test with a level of α =0.05.Based on the results of the study, the highest growth of Nannochloropsis sp. LMCoccurred in the treatment of agricultural fertilizers, the highest weight of pastawith a dose of NaOH 175 ppm C, the highest fat content of Nannochloropsis sp.LMC at 100 ppm P.Keywords: Nannochloropsis sp. LMC, fertilizer, NaOH dose, growth, and fatcontent.

KUALITAS PASTA Nannochloropsis sp. ISOLAT LAMPUNG MANGROVECENTER (LMC) BERDASARKAN UJI KANDUNGAN LEMAK