title: Effect of novel bioactive edible coatings based on jujube gum and nettle oil-loaded nanoemulsions on the shelf-life of Beluga sturgeon fillets.
abstract: Effect of jujube gum (JG; 4, 8 and 12% wt)-based nanoemulsions (NEs) containing nettle essential oil (NEO; 2, 3.5 and 5% wt) as new edible coatings was investigated to preserve Beluga sturgeon fillets (BSFs) during 15 day-refrigerated storage at 4°C. Physical (weight loss, cooking loss, color and texture), chemical (pH, FFA, PV, TBARS and TVB-N), microbiological (total and psychrotrophic bacterial counts), and sensorial characteristics of BSFs were kinetically analyzed. Preliminary studies showed that the NEs formulated with NEO lower than 5% at all JG concentrations were able to form stable coating solutions owing to the highest short-term stability (>90%) and entrapment efficiency (94.4-98.3%). Edible NE coating formulated with 12% JG and 3.5% NEO as a novel antimicrobial and antioxidant biomaterial exhibited the lowest weight and cooking losses, pH changes, textural and color deterioration, lipid oxidation and microbial growth in BSFs refrigerated over a period of 15days (P<0.05).
authors.affiliation: Young Researchers and Elites Club, Science and Research Branch, Islamic Azad University, Tehran 14778-93855, Iran. Electronic address: smt.gharibzahedi@gmail.com.
authors.forename: Seyed Mohammad Taghi
authors.initials: SM
authors.lastname: Gharibzahedi
authors.affiliation: Osteoporosis Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Sara
authors.initials: S
authors.lastname: Mohammadnabi
mesh_terms: D000818:Animals; D003116:Color; D004655:Emulsions; D005399:Fishes / Q000382:microbiology; D005519:Food Preservation / Q000379:methods*; D061353:Food Storage; D049329:Nanostructures / Q000737:chemistry*; D009822:Oils, Volatile / Q000737:chemistry*; D053149:Plant Gums / Q000737:chemistry*; D010938:Plant Oils / Q000737:chemistry; D013649:Taste; D013997:Time Factors; D031957:Ziziphus / Q000737:chemistry*
chemical_list: D004655:Emulsions; D009822:Oils, Volatile; D053149:Plant Gums; D010938:Plant Oils
keywords: Edible coating; Fish fillet; Jujube mucilage; Nanoemulsion; Quality maintenance; Ziziphus jujuba Mill.