Phycoprospecting the nutraceutical potential of Isochrysis sp as a source of aquafeed and other high‐value products

Abstract

Microalgae, besides possessing more efficient photosynthetic machinery than terrestrial plants (Chisti, 2013), have also been recognized as potential source of plethora of novel compounds ranging from proteins to polar and neutral lipids, carotenoids to phenolic compounds and various long-chain polyunsaturated fatty acids amongst others (Marella et al., 2020;De Oliveira et al., 2020). Isochrysis sp., a marine prymnesiophyte, has long been one of the most widely experimented microalgae owing to both its exceptional nutritional value, fast growth rate as well as wide range of tolerance to different environmental cues (Fabregas et al., 1985;Matos et al., 2019). Studies have revealed that since this haptophyte can synthesize range of ω-3 fatty acids like EPA and DHA, vitamins and complex polysaccharides, carotenoids like fucoxanthin, sterols and secondary metabolites, it can serve as an eminent source for mainly nutraceuticals and pharmaceutical sectors (Bandarra et al., 2003;Matos et al., 2017).With a storehouse of metabolites, this microalga has also been explored as an alternative source of natural antioxidant besides its antimicrobial, anti-inflammatory, anti-cancerous and antihypercholesterolaemic properties (Nuño et al., 2013;Sun et al., 2014). Isochrysis, because of its unparalleled nutritional value besides other microalgae like Skeletonema, Chaetoceros, Pavlova, Nannochloropsis, Tetraselmis and Thalassiosira, has been preferred both as a direct natural feed for molluscs, shrimps and as an indirect food source for fish larvae (Dineshbabu et al., 2019). Being crucial for the growth and development rotifers like Brachionus plicatilis and crustaceans like oysters, shellfish and mussels; for rearing of bivalve hatcheries and for conditioning of the brood stock, it plays a pivotal role in aquaculture industries (Zhu et al.,

Synergistic Impact of Lactobacillus plantarum and Bacillus coagulans on Solid-State Fermentation of Astragalus and Effects of Fermentation Products on Disease Resistance of Crucian Carp (Carassius auratus)

“…Furthermore, feeding B. coagulans to aquatic animals has been found to improve their growth, immune response, and antioxidant capability [10,13]. Using the combination of probiotics and traditional Chinese medicines to achieve intestinal microecological balance has received much attention from the aquaculture industry [14][15][16]. Microorganisms with strong decomposition and transformation abilities ferment traditional Chinese medicines, resulting in the abundant production of secondary metabolites.…”