K. Khadijah - Department of Chemistry Education, Faculty of Teacher Training and Education, Universitas Khairun, Jalan Pertamina Kampus II Gambesi, Ternate ۹۷۷۱۹, North Maluku, Indonesia
N.H. Soekamto - Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Hasanuddin, Jl. Perintis Kemerdekaan No.KM.۱۰, Makassar ۹۰۲۴۵, South Sulawesi, Indonesia
F. Firdaus - Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Hasanuddin, Jl. Perintis Kemerdekaan No.KM.۱۰, Makassar ۹۰۲۴۵, South Sulawesi, Indonesia
S.M.T. Chalid - Department of Medical, Faculty of Medicine, Universitas Hasanuddin, Jl. Perintis Kemerdekaan No.KM.۱۰, Makassar ۹۰۲۴۵, South Sulawesi, Indonesia
Y.M. Syah - Department of Chemistry, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesa No.۱۰, Bandung ۴۰۱۳۲, West Java, Indonesia

Background: Padina sp. is an algae that has potential as a functional food. This study aimed to explore the chemical and photochemical constituent in the methanolic exract of Padina sp. Methods: Brown algae of Padina sp. from Puntondo coast, Takalar, Indonesia was prepared. The algae characterization was carried out based on the standard procedure of Association of Official Agricultural Chemists (AOAC). Toxicity of Padina sp. was determined with Brine Shrimp Lethality Test (BSLT). Results: Chemical contents were ۱۳.۴۶% water, ۳۸.۰۲% ash, ۱۲.۳۳% protein, ۱.۶۰% fat, ۲۰.۰۲% fiber, and ۴۸.۰۶% carbohydrate. The FTIR spectrum displayed the presence of hydroxyl, carboxylic acids, aldehydes, aliphatic hydrocarbons, fatty acids, and unsaturated hydrocarbons. Padina sp. extract consisted of phytol compound which had ۷۰-۹۶% similarity with steroids, fatty acids, carboxylic acids, terpenoid, and proteins. The result of toxicity was ۶۳۴۴.۵۴ ppm indicating not toxic. Conclusion: Padina sp. can be used as a raw material source for functional food and pharmaceutical industry. DOI: ۱۰.۱۸۵۰۲/jfqhc.۸.۴.۸۲۵۹ 

Phaeophyta, Nutritive Value, Phytochemicals, Toxicity, Functional Food, Indonesia