Aquaculture water as a source of sustainable growth medium for diatom cultivation and its nutritive suitability as a potential aqua feed

Bhattacharjya, Raya; Singh, Pankaj Kumar; Tiwari, Archana

doi:10.1016/j.eti.2021.101987

Cited by 11 publications

(5 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In a recent study by Saxena et al 103 it has been demonstrated that diatoms Chaetoceros gracilis and Thalassiosira weissflogii cultured in different proportions of fish pond wastewater and f/2 nano‐silicate showed a considerable removal of nitrate (50.6%–60%), phosphate (47.8%–79%) and ammonia (42%–52.6%) in the 50% experimental setup. Since contaminations usually affects the health of smaller aquatic organisms and water purity, in another study it was reported that diatoms could reduce the overall content of nitrate and phosphate of different pond waters by utilizing it as a sustainable source of growth media (Bhattacharjya et al, 2021a) 104 …”

Section: Suitability Of Diatoms As Feedmentioning

confidence: 99%

“…Incorporating genetically transformed or synthetically manipulated algal strains with validated parts can be assembled to produce range of recombinant bioactive, with altered immune activity, growth promoters, and antimicrobial properties 166 . Besides this, modelling of auxotrophic mutants or insertion of targeted transgenes in diatoms via TALEN, CRISPR/Cas9, or RNAi‐mediated techniques in order to stimulate both growth and lipid production also has pertinent scope in biotechnology‐assisted aquaculture 104,167 . Besides these, nuclear chromosome, chloroplast, and episomal‐mediated engineering of strains have also paved the way for optimizing better feed formulations 92 …”

Section: New Avenues Towards Developing Sustainable Feedsmentioning

confidence: 99%

“…Since contaminations usually affects the health of smaller aquatic organisms and water purity, in another study it was reported that diatoms could reduce the overall content of nitrate and phosphate of different pond waters by utilizing it as a sustainable source of growth media (Bhattacharjya et al, 2021a). 104 Besides this, the overuse of antibiotics or medicine may negatively impact the meat quality of aquatic animals and cause food safety problems. The accumulation of residual antibiotics or medicine in the water body may also become a trigger of antibiotics-resistance and even some ecological disasters.…”

Section: Water Quality Controlmentioning

confidence: 99%

“…166 Besides this, modelling of auxotrophic mutants or insertion of targeted transgenes in diatoms via TALEN, CRISPR/Cas9, or RNAi-mediated techniques in order to stimulate both growth and lipid production also has pertinent scope in biotechnology-assisted aquaculture. 104,167 Besides these, nuclear chromosome, chloroplast, and episomal-mediated engineering of strains have also paved the way for optimizing better feed formulations. 92 In addition, the use of non-photosynthetic diatom species for heterotrophic cultivation is gaining increased interest due to its potential to produce high-density biomass with reduced cultivation times for food and feed industry.…”

Section: New Avenues Towards Developing Sustainable Feedsmentioning

confidence: 99%

See 3 more Smart Citations

Diatom‐assisted aquaculture: Paving the way towards sustainable economy

Bhattacharjya,

Marella,

Kumar

et al. 2023

Reviews in Aquaculture

Self Cite

View full text Add to dashboard Cite

With decreasing world oceans fish stock there is rapid increase in aquaculture production. To meet this demand, there is an urgent need to improve existing aquaculture technologies and make the system more sustainable and economically feasible. Diatoms are unicellular protists that are present ubiquitously in freshwater and marine habitats and are responsible for 40% of marine and 20% of net global primary productivity. They are the most preferred microalgae for production of live feeds in mariculture due to their suitable size, easy digestibility, and optimum nutritional content. Diatoms biosynthesize a range of bioactive compounds like lipids, polysaccharides, proteins, pigments, and vitamins which can both promote the health and survival of aquatic species like fishes, bivalves, and shrimps. As the main prerequisite to attain sustainability is to reduce pollutants from aquaculture wastewater, diatoms have long been employed for remediating and utilizing the eutrophic nutrients as a growth supplement which otherwise might be detrimental to aquaculture species. Though many recent studies have highlighted the significance of diatoms in aquaculture, its dual contribution in maintaining the nutritional content of the feed as well as in improving the water quality should be coupled with its unique mechanisms and adaptability. Thus, the current review addresses the bottlenecks in aquaculture industry and the prospects of implementing diatom‐based bioremediation and biomass valorization for the production of live feeds with the hindsight of establishing circular bioeconomy.

show abstract

Section: Suitability Of Diatoms As Feedmentioning

confidence: 99%

Section: New Avenues Towards Developing Sustainable Feedsmentioning

confidence: 99%

Section: Water Quality Controlmentioning

confidence: 99%

Section: New Avenues Towards Developing Sustainable Feedsmentioning

confidence: 99%

See 2 more Smart Citations

Diatom‐assisted aquaculture: Paving the way towards sustainable economy

Bhattacharjya,

Marella,

Kumar

et al. 2023

Reviews in Aquaculture

Self Cite

View full text Add to dashboard Cite

show abstract

“…With the increased global aquaculture production and the high competition for feed ingredients for marine aquaculture production, new local ingredients and additives are required to fulfll the nutrient requirement [1]. Terefore, research on new species of microalgae, yeast, and insects, among others, is needed to identify other potential ingredient sources [2][3][4][5]. Among these novel ingredients, the by-products obtained from marine polychaetes could be of interest if some species can be successfully cultured [6].…”

Section: Introductionmentioning

confidence: 99%

Seasonal Variation in Fatty Acid and Amino Acid Composition of the Patagonian Marine Polychaete Abarenicola pusilla and Its By-Products

Farı́as

Valenzuela

Hernández

et al. 2023

Aquaculture Research

View full text Add to dashboard Cite

This study aims to provide a quantitative analysis of the amino acids (AAs) and fatty acids (FAs) found in by-products of the Patagonian marine polychaete Abarenicola pusilla. Samples of polychaetes were taken in different seasons and processed to generate three by-products: eviscerated whole body, press cake, and press liquid. The results showed a clear seasonal difference, with essential nutrients decreasing significantly in winter. For example, from eviscerated whole body specimens, essential fatty acids, eicosapentaenoic acid (EPA), and arachidonic acid (ARA) maintained a relationship of 1 in summer, 1.24 in winter, and 1.5 in spring and autumn. In comparison, docosahexaenoic acid (DHA) was undetected in some extracts in winter. However, the fatty acid content in press liquid resulted in high variation, with the lowest content during the autumn. In contrast, the press liquid and press cake responded similarly. DHA decreased from spring to winter (from 0.1 to 0.08), whereas EPA resulted in high variation along the seasons (from 0.57 to 0.03) from summer to autumn. The highest protein values were observed in the spring and summer. In contrast, lipid values remained under 10% constant throughout all seasons, unless in the eviscerated carcass, where 5 to 3% higher lipids were found, indicating that A. pusilla uses protein more efficiently than lipids as an energy source. The most abundant EAAs were lysine (LYS) and leucine (LEU), while glycine (GLY), glutamic acid (GLU), and alanine (ALA) were the most abundant NEAAs. Finally, A. pusilla harvest conditions and the type of extract recommended to produce a valuable ingredient for marine aquafeeds are discussed.

show abstract