Oil-in-water nanoemulsions loaded with lycopene extracts encapsulated by spray drying:Formulation,characterization and optimization  

作　　者：Junyang Li Roberta Campardelli Giuseppe Firpo Jingtao Zhang Patrizia Perego 

机构地区：[1]Department of Civil,Chemical and Environmental Engineering(DICCA),University of Genoa,Via Opera Pia 15,Genova 16145,Italy [2]Department of Physics,University of Genoa,Via Dodecaneso 32,Genova 16146,Italy [3]School of Food and Bioengineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China

出　　处：《Chinese Journal of Chemical Engineering》2024年第6期73-81,共9页中国化学工程学报（英文版）

摘　　要：Lycopene is very susceptible to degradation once released from the protective chromoplast environment.In this study,oil-in-water(O/W)nanoemulsions coupled with spray drying technology were applied for the encapsulation and stabilization of lycopene extracted from tomato waste.Tomato extract was obtained by ultrasound-assisted extraction.Nanoemulsions were prepared by a high-speed rotor stator using isopropyl myristate as the oil phase and Pluronic F-127 as the emulsifier for the aqueous external phase.The effect of emulsification process parameters was investigated.Spray drying of the produced emulsions was attempted to obtain a stabilized dry powder after the addition of a coating agent.The effect of different coating agents(maltodextrin,inulin,gum arabic,pectin,whey and polyvinylpyrrolidone),drying temperature(120-170℃),and feed flow rate(3-9 ml·min^(-1))on the obtained particles was evaluated.Results revealed that the emulsion formulation of 20/80(O/W)with 1.5%(mass fraction)of Pluronic F-127 as stabilizer in the aqueous phase resulted in a stable nanoemulsion with droplet sizes in the range of 259-276 nm with a unimodal and sharp size distribution.The extract in the nanoemulsion was well protected at room temperature with a degradation rate of lycopene of about 50%during a month of storage time.The most stable emulsions were then processed by spray drying to obtain a dry powder.Spray drying was particularly successful when using maltodextrin as a coating agent,obtaining dried spherical particles with mean diameters of(4.87±0.17)μm with a smooth surface.The possibility of dissolving the spray dried powder in order to repristinate.The original emulsion was also successfully verified.

关 键 词：Emulsions Powders Stability Isopropyl myristate LYCOPENE SPRAY-DRYING 

分 类 号：TS264.4[轻工技术与工程—发酵工程]