title: Efficacy of mint (Mentha arvensis) leaf and citrus (Citrus aurantium) peel extracts as natural preservatives for shelf life extension of chill stored Indian mackerel.
abstract: Efficacy of mint (Mentha arvensis) leaf and citrus (Citrus aurantium) peel extracts in retarding the quality changes in Indian mackerel during chilled storage was investigated. Mint leaf extract showed higher quantity of phenolics and superior in-vitro antioxidant activities than citrus peel extract. Gutted mackerel were given a dip treatment in mint extract (0.5 %, w/v) and citrus extract (1 % w/v), packed in LDPE pouches and stored at 0-2 °C. The biochemical quality indices viz. total volatile base nitrogen (TVB-N), trimethylamine nitrogen (TMA-N), free fattyacids (FFA) were significantly (p < 0.05) lower in mint extract (ME) treated fishes compared to citrus extract (CE) treated and control fishes (C) without any treatment. Plant extract treatment significantly inhibited lipid oxidation in mackerel as indicated by peroxide value (PV) and thiobarbituric acid reactive substances (TBARS). Aerobic plate count (APC) was markedly higher in C group followed by CE group throughout the storage period. As per sensory evaluation, shelf life of Indian mackerel was determined to be 11-13 days for C group, 13-15 days for CE group and 16-17 days for ME group, during storage at 0-2 °C.
authors.affiliation: Visakhapatnam Research Centre of Central Institute of Fisheries Technology, Oceanview layout, Pandurangapuram, A.U.PO, Visakhapatnam, 530003 India.
authors.forename: Pankyamma
authors.initials: P
authors.lastname: Viji
authors.affiliation: Mumbai Research Centre of Central Institute of Fisheries Technology, Vashi, NaviMumbai, Maharashtra 400703 India.
authors.forename: Puthanpurakkal Kizhakkathil
authors.initials: PK
authors.lastname: Binsi
authors.affiliation: Mumbai Research Centre of Central Institute of Fisheries Technology, Vashi, NaviMumbai, Maharashtra 400703 India.
authors.forename: Sivam
authors.initials: S
authors.lastname: Visnuvinayagam
authors.affiliation: Central Institute of Fisheries Technology, Cochin, Kerala 629503 India.
authors.forename: Jaganath
authors.initials: J
authors.lastname: Bindu
authors.affiliation: Central Institute of Fisheries Technology, Cochin, Kerala 629503 India.
authors.forename: Chandragiri Nagarajarao
authors.initials: CN
authors.lastname: Ravishankar
authors.affiliation: Central Institute of Fisheries Technology, Cochin, Kerala 629503 India.
authors.forename: Teralandur Krishnaswamy
authors.initials: TK
authors.lastname: Srinivasa Gopal
keywords: Biochemical quality; Citrus peel; Indian mackerel; Mint leaf; Shelf life