title: Effect of additives in the shelflife extension of chilled and frozen stored Indian octopus (Cistopus indicus).
abstract: In this study, the effect of commercial additives viz. cafodos and altesa employed to treat Indian octopus (Cistopus indicus) was examined during chilled and frozen storage. Shelf lives of treated and untreated octopus in ice were 6 and 8 days, respectively in ice. Treated and untreated frozen octopus had a shelf life of 40 days. Autolytic and microbiological changes were not controlled by the additives, as evidenced through rapid reduction in non-protein nitrogen (NPN) and α-amino nitrogen (α-AN) compounds; as well as accumulation of water soluble ammoniacal nitrogen and total volatile base- nitrogen (TVB-N) compounds. Loss of texture and colour were the major quality defects noticed in treated octopus as a result of enhanced protein solubility. Therefore, the additives approved for use in octopus neither enhanced the shelf life nor improved the sensory quality.
authors.affiliation: Department of Fish Quality Assurance and Management, Fish Quality Monitoring and Certification Centre, Fisheries College and Research Institute, Tamil Nadu Fisheries University, Tuticorin, 628 008 India.
authors.forename: Uthaman
authors.initials: U
authors.lastname: Manimaran
authors.affiliation: Department of Fish Quality Assurance and Management, Fish Quality Monitoring and Certification Centre, Fisheries College and Research Institute, Tamil Nadu Fisheries University, Tuticorin, 628 008 India.
authors.forename: Robinson Jeya
authors.initials: RJ
authors.lastname: Shakila
authors.affiliation: Department of Fish Quality Assurance and Management, Fish Quality Monitoring and Certification Centre, Fisheries College and Research Institute, Tamil Nadu Fisheries University, Tuticorin, 628 008 India.
authors.forename: Rajendran
authors.initials: R
authors.lastname: Shalini
authors.affiliation: Department of Fish Quality Assurance and Management, Fish Quality Monitoring and Certification Centre, Fisheries College and Research Institute, Tamil Nadu Fisheries University, Tuticorin, 628 008 India.
authors.forename: Balasubramanian
authors.initials: B
authors.lastname: Sivaraman
authors.affiliation: Department of Fish Quality Assurance and Management, Fish Quality Monitoring and Certification Centre, Fisheries College and Research Institute, Tamil Nadu Fisheries University, Tuticorin, 628 008 India.
authors.forename: Ganesan
authors.initials: G
authors.lastname: Sumathi
authors.affiliation: Department of Fish Quality Assurance and Management, Fish Quality Monitoring and Certification Centre, Fisheries College and Research Institute, Tamil Nadu Fisheries University, Tuticorin, 628 008 India.
authors.forename: Rajendran
authors.initials: R
authors.lastname: Selvaganapathi
authors.affiliation: Department of Fish Quality Assurance and Management, Fish Quality Monitoring and Certification Centre, Fisheries College and Research Institute, Tamil Nadu Fisheries University, Tuticorin, 628 008 India.
authors.forename: Geevarathnam
authors.initials: G
authors.lastname: Jeyasekaran
keywords: Additives; Chilled storage; Frozen storage; Indian octopus; Shelf life