Antimicrobial activity of chitosan against vibrios from freshwater prawn Macrobrachium rosenbergii larval rearing systems

Anas, Abdulaziz; Paul, Sylvianne; Jayaprakash, N.S.; Philip, Rosamma; Singh, I. S. Bright

doi:10.3354/dao067177

Cited by 19 publications

(5 citation statements)

References 17 publications

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“…T2 caused reductions of 1.4 and 0.7 Log UFC/g (44 and 31%) of V. parahaemolyticus and cholerae, respectively. Similar results were reported by Anas et al (2005), who applied 1% chitosan to shrimp and found reductions of 85, 69 and 50% in V. cholerae, V. parahaemolyticus, and V. alginolyticus, respectively. Likewise, Chaiyakosa et al (2007) obtained reductions of 81 and 96% while applying 0.25% chitosan solutions for 10 and 30 min, respectively, on shrimp infected with V. parahaemolyticus.…”

Section: Microbiological Analysessupporting

confidence: 77%

Effect of chitosan-carvacrol edible coatings on the quality and shelf life of tilapia (Oreochromis niloticus) fillets stored in ice

et al. 2015

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Fish consumption has increased in recent years. However, fish meat is highly perishable, which demonstrates the need for technologies to preserve its quality. Edible coatings (EC) might provide an alternative to extend the shelf life of fish. The goal of this study was to evaluate the effect of EC of chitosan (C) in combination with carvacrol (CAR) on the physical and microbiological changes of tilapia fillets. Fillets were submerged for two minutes in different treatments (T1: control; T2: C 2%; T3: C 2% + 0.125% CAR; T 4: C 2% + 0.25% CAR). At the end of storage, T1 and T2 showed the lowest values of total volatile bases (TVB). The color parameters L*, a* and b* varied from each treatment. The texture decreased and the different treatments reduced the microbial population in relation to the control; T3 and T4 were the most effective. These results show that the use of C with CAR might be an alternative method to preserve the quality and safety of tilapia fillets.Keywords: chitosan; essential oils; edible coating; tilapia fillets. Practical Application:The use edible coatings of chitosan-carvacrol could be an alternative to preserve the quality and increase the shelf-life of tilapia fillets.

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Section: Microbiological Analysessupporting

confidence: 77%

Effect of chitosan-carvacrol edible coatings on the quality and shelf life of tilapia (Oreochromis niloticus) fillets stored in ice

et al. 2015

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“…We presume that this could be due to the saturation limit of digestion of chitin particles by M. rosenbergii. This is supported by the similar observations of Anas et al (2005), where M. rosenbergii were fed with 0.75% and 1% chitosan supplemented diet and showed high antimicrobial activity against 48 isolates of Vibrio species. Similarly, M. rosenbergii fed a diet containing bovine lactoferrin had shown enhanced resistance against Aeromonas hydrophila infection (Chand et al, 2006).…”

Section: Discussionsupporting

confidence: 85%

Enhanced immune response and resistance to white tail disease in chitin-diet fed freshwater prawn, Macrobrachium rosenbergii

Kumar

Murthy

Patil

et al. 2015

Aquaculture Reports

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a b s t r a c tChitin is one of the natural biopolymer found abundantly in the shells of crustaceans, insects and in cell walls of fungi. In this study, we determined the effect of dietary administration of 0.5, 0.75 and 1% chitin on the immune response and disease resistance in freshwater prawn, challenged against Macrobrachium rosenbergii nodavirus (MrNV) and extra small virus (XSV). We observed a significantly enhanced immune response, indicated as higher prophenoloxidase activity and respiratory burst of hemocytes, in 0.75% chitin-diet fed prawns compared to the chitin-free-diet fed prawns. Importantly, the relative percent survival (RPS) following challenge with white muscle disease (WTD) viruses was found relatively high in M. rosenbergii fed with diet containing 0.75% chitin (63.16%), suggesting an increased resistance to disease susceptibility. These results indicate that the incorporation of chitin in prawn diet would be beneficial in stimulating the immune response and thereby developing resistance against diseases.

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“…The main advantages of chitosan compared with the cross-linked protein wall materials are its non-toxicity, formation of ¢lms soluble in acidic pH and well-documented antibacterial property (Allan & Hadwiger 1979;Kendra & Hadwiger 1984;Sudarshan, Hoover & Knorr 1992;Wang 1992;Roller & Covill 1999;Zheng & Zhu 2003). Our previous studies have demonstrated the same against vibrios associated with M. rosenbergii larval rearing systems (Anas, Paul, Jayaprakash, Philip & Singh 2005). These properties further substantiate the potential of using chitosan as a wall material for preparing a microencapsulated drug delivery system for crustacean larvae.…”

Section: Resultssupporting

confidence: 65%

Chitosan as a wall material for a microencapsulated delivery system for Macrobrachium rosenbergii (de Man) larvae

2008

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Chitosan has been widely accepted as a wall material for preparing microcapsules of various purposes in human medicine. The possibility of using chitosan as a wall material for microencapsulating nutrients and drugs for aquaculture purposes, specifically to Macrobrachium rosenbergii larvae was evaluated in this study. Two types of chitosan‐coated microcapsules were prepared using either acetone (MEC‐A) or NaOH (MEC‐N) as the cross‐linking agents. They were compared with a microbound diet relative to total leaching of nutrients and free amino acids (FAA). Among the microcapsules, MEC‐N showed the lowest level of total leaching of nutrients (23.3%) during 5 h of immersion in seawater and released 65% FAA after 60 min. During laboratory trials, 75% larvae had accepted the MEC‐N capsule. The results of the study suggest that chitosan can be used as a wall material for preparing microcapsules to deliver drugs and nutrients to M. rosenbergii larvae.

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Antimicrobial activity of chitosan against vibrios from freshwater prawn Macrobrachium rosenbergii larval rearing systems

Cited by 19 publications

References 17 publications

Effect of chitosan-carvacrol edible coatings on the quality and shelf life of tilapia (Oreochromis niloticus) fillets stored in ice

Effect of chitosan-carvacrol edible coatings on the quality and shelf life of tilapia (Oreochromis niloticus) fillets stored in ice

Enhanced immune response and resistance to white tail disease in chitin-diet fed freshwater prawn, Macrobrachium rosenbergii

Chitosan as a wall material for a microencapsulated delivery system for Macrobrachium rosenbergii (de Man) larvae

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