Emerging trends in the pretreatment of microalgal biomass and recovery of value-added products: A review.
Nirakar Pradhan, Sanjay Kumar, Rangabhashiyam Selvasembian, Shweta Rawat, Agendra Gangwar, R Senthamizh, Yuk Kit Yuen, Lijun Luo, Seenivasan Ayothiraman, Ganesh Dattatraya Saratale, Joyabrata Mal
Author Information
Nirakar Pradhan: Department of Biology, Faculty of Science, Hong Kong Baptist University, Hong Kong SAR, China.
Sanjay Kumar: Biofuel Research Laboratory, School of Biochemical Engineering, IIT(BHU) Varanasi, Varanasi, U.P. 221005 India.
Rangabhashiyam Selvasembian: Department of Biotechnology, School of Chemical & Biotechnology, SASTRA Deemed University, Thanjavur 613401, Tamil Nadu, India.
Shweta Rawat: Biofuel Research Laboratory, School of Biochemical Engineering, IIT(BHU) Varanasi, Varanasi, U.P. 221005 India.
Agendra Gangwar: Biofuel Research Laboratory, School of Biochemical Engineering, IIT(BHU) Varanasi, Varanasi, U.P. 221005 India.
R Senthamizh: Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, Uttar Pradesh, India.
Yuk Kit Yuen: Department of Biology, Faculty of Science, Hong Kong Baptist University, Hong Kong SAR, China.
Lijun Luo: Department of Biology, Faculty of Science, Hong Kong Baptist University, Hong Kong SAR, China.
Seenivasan Ayothiraman: Department of Biotechnology, National Institute of Technology Andhra Pradesh, Tadepalligudem - 534101, West Godavari Dist, Andhra Prdesh, India.
Ganesh Dattatraya Saratale: Department of Food Science and Biotechnology, Dongguk University, Ilsandong-gu, Goyang-si, Gyeonggido, Seoul 10326, Korea.
Joyabrata Mal: Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, Uttar Pradesh, India. Electronic address: joyabrata@mnnit.ac.in.
Microalgae are a promising source of raw material (i.e., proteins, carbohydrates, lipids, pigments, and micronutrients) for various value-added products and act as a carbon sink for atmospheric CO. The rigidity of the microalgal cell wall makes it difficult to extract different cellular components for its applications, including biofuel production, food and feed supplements, and pharmaceuticals. To improve the recovery of products from Microalgae, pretreatment strategies such as biological, physical, chemical, and combined methods have been explored to improve whole-cell disruption and product recovery efficiency. However, the diversity and uniqueness of the microalgal cell wall make the pretreatment process more species-specific and limit its large-scale application. Therefore, advancing the currently available technologies is required from an economic, technological, and environmental perspective. Thus, this paper provides a state-of-art review of the current trends, challenges, and prospects of sustainable microalgal pretreatment technologies from a Microalgae-based biorefinery concept.
