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  • Analysis and modeling of innovations in the global microalgae lipids market
    Publication . Carvalho, Natália Santana; Pessôa, Luiggi Cavalcanti; Deamici, Kricelle; da Silva, Jania Betânia Alves; de Souza Parga, Fernanda Aleluia; de Souza, Carolina Oliveira; Tavares, Pedro Paulo Lordelo Guimarães; de Jesus Assis, Denilson
    Microalgae lipids offer numerous advantages over those of plants and animals, enabling the sustainable commercialization of high value-added products in different markets. Although these markets are in a vertiginous annual expansion, technological life cycle modeling is a tool that has been rarely used for microalgae. Life cycle modeling is capable of assisting with decision-making based on data and is considered as a versatile model, usable in multiple software analyzing and diagnostic tasks. Modeling technological trends makes it possible to categorize the development level of the market and predict phase changes, reducing uncertainties and increasing investments. This study aims to fill this gap by performing a global analysis and modeling of microalgal lipid innovations. The Espacenet and Orbit platforms were used by crossing the keywords "microalgae", "lipid*", and the IPC code C12 (biochemistry and microbiology). Different sigmoid growth models were used in the present study. A successive repetition of the Chlorella genus category was found in the keyword clusters regarding extraction and separation of lipids. The life cycle S curve indicates a market starting at the maturity phase, where the BiDoseResp model stands out. The main countries and institutions at the technological forefront are shown, as well as potential technological domains for opening new markets.
  • Microalgae cultivated under magnetic field action: insights of aneEnvironmentally sustainable approach
    Publication . Deamici, Kricelle; Dziergowska, Katarzyna; Silva, Pedro Garcia Pereira; Michalak, Izabela; Santos, Lucielen Oliveira; Detyna, Jerzy; Kataria, Sunita; Brestic, Marian; Sarraf, Mohammad; Islam, Monirul
    Microalgae and cyanobacteria include procaryotic and eucaryotic photosynthetic micro-organisms that produce biomass rich in biomolecules with a high value. Some examples of these biomolecules are proteins, lipids, carbohydrates, pigments, antioxidants, and vitamins. Currently, microalgae are also considered a good source of biofuel feedstock. The microalga-based biorefinery approach should be used to promote the sustainability of biomass generation since microalga biomass production can be performed and integrated into a circular bioeconomy structure. To include an environmentally sustainable approach with microalga cultures, it is necessary to develop alternative ways to produce biomass at a low cost, reducing pollution and improving biomass development. Different strategies are being used to achieve more productivity in cultivation, such as magnets in cultures. Magnetic forces can alter microalga metabolism, and this field of study is promising and innovative, yet remains an unexplored area. This review presents the current trends in the magnetic biostimulation of microalgae for the application of cultivated biomass in different areas of biotechnology, biofuel, and bioenergy production, as well as environmental protection.
  • Enhancing microalgal cultures in desalinized wastewater from semiarid regions: an assessment of growth dynamics and biomass accumulation
    Publication . Deamici, Kricelle; Pessôa, Luiggi Cavalcanti; Mata, Saulo Nascimento; Moreira, Ícaro Thiago Andrade; de Jesus Assis, Denilson; de Souza, Carolina Oliveira
    This study aimed to evaluate the novel valorization of wastewater through the desalination process of concentrated saline water (CSW) originating from the semiarid regions of Brazil using the growth of two microalgae and modeling their growth using a kinetic model. Chlorella vulgaris and Ankistrodesmus fusiformis were cultured for 15 days in BG 11 medium that was partially replaced with wastewater, and the data from the best growing conditions were fitted to the model of Gompertz. The CSW had a low heavy metal concentration and both algae grew under all conditions studied. However, each microalga exhibited a different behavior under the same conditions. C. vulgaris remained only in the adaptation phase when it was cultured in 100% CSW. In contrast, A. fusiformis was only 3 days in the lag phase and had 67% more biomass than C. vulgaris. 75% CSW was best for both microalgae. This study demonstrates a circular bioeconomy model that can be applied to semiarid regions to provide water and food security for the local population. The potential of A. fusiformis has also been highlighted; however, it has not yet been explored in the field of microalgae culture.