Interaction of Biotin and Cobalamin on Biomass, Storage Products (Protein, Carbohydrate, Hydrocarbon Content) and Biodiesel Properties of Botryococcus braunii KMITL 2

Main Article Content

Suneerat Ruangsomboon
Jantra Dimak
Buppha Jongput

Abstract

          The optimal ratio of biotin (B) and cobalamin (C) and the interaction of both vitamins on the biomass and stored feed product content (protein, carbohydrate, hydrocarbon) of Botryococcus braunii KMITL 2 in laboratory were investigated. The vitamins were supplied to the alga in axenic Chlorella medium in a factorial 4x4 experimental setup of combinations at the following concentrations of biotin: 0, 1, 2 and 3 µg/l (B0, B1, B2, B3) and cobalamin: 0, 2, 4 and 6 µg/l (C0, C2, C4, C6). The control group was not supplemented with any vitamins. Among the various vitamin ratios tested, B1C6 produced the highest biomass (1.89±0.23 g/l). The highest specific growth rate (0.39±0.10 /d), protein content (23.29±1.15 %), carbohydrate content (31.48±1.68%), and hydrocarbon content (62.17±1.31%) were produced by use of the supplements B1C0, B3C6, B1C4, and B3C0, respectively. The resulted indicated that biotin and cobalamin had synergistic effects on the specific growth rate, and the protein, carbohydrate and hydrocarbon contents of the KMITL 2 strain. The cetane values (45.75-60.37) of the alga from most treatments was higher than the standard. The alga that was cultivated in B0C2 treatment showed better biodiesel properties, with the lowest iodine values (30.09 g I2/100) and degrees of unsaturation (32.78oC), and the highest cetane numbers (60.37). The results show that combinations of the optimized levels of biotin and cobalamin are promising medium supplements for
this strain. They are able to increase the alga’s specific growth rate and can facilitate its use as a feedstock in biodiesel production.

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How to Cite
Ruangsomboon, S. ., Dimak, J. ., & Jongput, B. . (2020). Interaction of Biotin and Cobalamin on Biomass, Storage Products (Protein, Carbohydrate, Hydrocarbon Content) and Biodiesel Properties of Botryococcus braunii KMITL 2. King Mongkut’s Agricultural Journal, 38(4), 545–554. retrieved from https://li01.tci-thaijo.org/index.php/agritechjournal/article/view/248351
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Research Articles

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