Three dimensional optimisation for the enhancement of astaxanthin recovery from shrimp shell wastes by Aeromonas hydrophila

• Published in: Biocatalysis and agricultural biotechnology 2020-08, Vol.27, p.101649, Article 101649
• Main Authors: Cheong, Jee Yin, Muskhazli, Mustafa, Nor Azwady, Abd Aziz, Ahmad, Siti Aqlima, Adli, Azleen Ahmad
• Format: Article
• Language: English
• Subjects: Aerobic microbial fermentation; Carotenoid; Central composite design; Crustacean shell; Single factor optimisation
• ISSN: 1878-8181; 1878-8181
• DOI: 10.1016/j.bcab.2020.101649

Shrimp shells generally contain natural astaxanthin which is lost to the environment industrial food processing as the shrimp shells are discarded as wastes. An approach to recover astaxanthin was developed utilising Aeromonas hydrophila in single factor optimisation method to screen several physio-chemical sources using response surface methodology. The central composite design determined the optimised culture media-conditions to be pH 7.0, monosodium glutamate 3% (w/v), glucose (1% w/v) and 30 °C. In addition, the optimised media increased astaxanthin recovery by 38% in comparison to the unoptimised media as under optimal conditions, A.hydrophila degraded shrimp shell waste more efficiently to recover more astaxanthin. This study contributes to the application of A. hydrophila and provides an alternative route for the recovery of astaxanthin from shrimp shell wastes. •Aeromonas hydrophila is capable of recovering astaxanthin from shrimp shell waste.•Optimisation of culture media enhances the recovery of astaxanthin.•This study shows the utilisation of application of Aeromonas hydrophila.•Providing an alternative method in aerobic fermentation and astaxanthin recovery.•Enhancing the management of shrimp shell wastes using a common pathogen on shrimps.