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All Journal ASEAN Journal of Chemical Engineering
Razif Harun
Department of Chemical and Environmental Engineering, Universiti Putra Malaysia, 43400 Serdang, Malaysi
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry

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Profile of Amino Acids Production from Microalgae Nannochloropsis sp. Biomass using Subcritical Water Technology Nur Hidayah Binti Zainan; Razif Harun; Siti Mazlina Mustapa Kamal; Mohd Azan Mohammed Sapardi; Yanti Maslina Mohd Jusoh
ASEAN Journal of Chemical Engineering Vol 22, No 1 (2022)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ajche.69517

Abstract

The amino acids from microalgae could be used as a substitute for food and feed supplements in the future. This study investigates the production of amino acids from microalgae Nannochloropsis sp. biomass using subcritical water technology approaches. The yield and composition of amino acids produced from subcritical water of microalgae Nannochloropsis sp. were evaluated at different temperatures (160-350 °C), time (3-30 min), and biomass loadings (1- 15% w/v). Overall results showed that the highest yield of total amino acids (1531.98 mg/100 g algae) was obtained at subcritical water operating conditions of 280 °C, 15 min reaction time, and 1% biomass loading. The studied operating conditions produced a higher yield of non-essential amino acids compared to essential amino acids. The study demonstrated that each of the individual amino acids investigated produced the highest at different ranges of subcritical water conditions. Thus, the obtained profile of the individual amino acid showed that careful management of operating parameters (temperature, time, and biomass loading) is crucial for identifying the amino acids of interest via subcritical water technology.
Co-Authors Mohd Azan Mohammed Sapardi Nur Hidayah Binti Zainan Siti Mazlina Mustapa Kamal Yanti Maslina Mohd Jusoh