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Wijihastuti, Risa Swandari
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OPTIMIZATION OF HARVEST TIME FOR BIOMASS AND PHYCOBILIPROTEIN PRODUCTION OF Spirulina sp. CULTIVATED IN GANYONG (Canna edulis) SHOOT WASTE–BASED LIQUID ORGANIC FERTILIZER Wijihastuti, Risa Swandari; Noriko, Nita; Saffana, Nadhira; Lutfiah, Akifah; Maryanto, Botista Agung
Jurnal Perikanan Unram Vol 16 No 1 (2026): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v16i1.2039

Abstract

Spirulina sp. is a microalga with high economic value and strong potential as a source of protein and bioactive pigments for functional food, cosmetic and pharmaceutical applications. This study aimed to evaluate the growth performance, protein and pigment contents, and to determine the optimal harvest time of Spirulina sp. cultured using liquid organic fertilizer (LOF) produced from fermented ganyong shoot waste (Canna edulis). The culture was conducted for 16 days using LOF media at concentrations of 14 and 18 ml/L. The observed parameters included dry biomass weight, specific growth rate, biomass productivity, protein content, chlorophyll-a and phycobiliprotein pigments throughout the cultivation period. The results showed that Spirulina sp. biomass increased by approximately fivefold compared to the initial biomass in both treatments. Specific growth rate, biomass productivity, and protein content did not differ significantly between the two LOF concentrations (p > 0.05), with protein content ranging from 42% to 55% of dry biomass weight. Chlorophyll-a and phycobiliprotein contents varied according to the growth phase of the culture. The highest phycobiliprotein content was obtained in cultures grown with 14 mL/L LOF and harvested on day 8 of cultivation. These findings indicate that liquid organic fertilizer derived from ganyong shoot waste has strong potential as a sustainable alternative nutrient source for biomass and pigment production of Spirulina sp., with the exponential growth phase representing the optimal harvest time.
Co-Authors Agustono, Rachmad Arief Pambudi Choirunnisa, Nadiyah Isna Dianita, Adinda Citra Fauzia, Nurul Firman Alamsyah Hidayat Yorianta Sasaerila Iskandar, S Jaceyntha Sarah Kintoko, Wendy Almira Liana Mailani Lubis, Syakira Kiyasa Lutfiah, Akifah Mandjusri, Alma Maryanto, Botista Agung Muh Asrul Irawan, Andi Nicola, Flavia De Nita Noriko Novani, Elya NURUL HIDAYAH Perdana, Analekta Tiara primasari, alina Puspitasari, Riris Lindiawati Saffana, Nadhira Syafitri Jumianto, Syafitri Yunus Effendi Zakia Umami Zalfa, Dinda