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KMID : 1094720220270060879
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Biotechnology and Bioprocess Engineering
2022 Volume.27 No. 6 p.879 ~ p.889
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Recent Advances in the Utilization of Brown Macroalgae as Feedstock for Microbial Biorefinery
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Woo Sung-Hwa
Shin Tae-Young
Sung Jun-Yeong
Baek Dong-Yeop
Shon Yang-Jun
Jung Gyoo-Yeol
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Abstract
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A stable and economical supply of biomass is essential for meeting the increasing demand for bioproducts. In this regard, numerous studies on the utilization of macroalgal biomass as feedstock are in progress to exploit its high productivity, high carbohydrate content, low cost, and easy pretreatment. Macroalgal biomass is classified as green, red, and brown depending on the color of its photosynthetic pigments and chlorophyll. Owing to considerable differences in ecology, habitat, and carbohydrate composition, it is necessary to study each macroalgae type as a separate and distinct biomass feedstock. Among them, the utilization of brown macroalgae as a feedstock is expected to not only reduce process costs but also alleviate environmental pollution. Therefore, in this review, we provide a comprehensive and detailed summary of recent advances in the microbial bioconversion of brown macroalgae. Brown macroalgal carbohydrates primarily comprise mannitol, laminarin, alginate, and fucoidan, which require different hydrolases or catabolic enzymes for microbial bioconversion. Therefore, depending on the carbohydrate type, relevant papers were identified and summarized. Given the numerous reports on the successful and efficient utilization of alginate, which is the most abundant carbohydrate in brown macroalgae, we reasoned that the potential of brown macroalgae-based biorefinery is relatively high. Moreover, follow-up studies can contribute to enhance the economic feasibility and commercialization of brown macroalgae-based biorefinery products.
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KEYWORD
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brown macroalgae, microbial bioconversion, mannitol, laminarin, alginate, fucoidan
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