Optimization of fish gelatin drying processes and characterization of its properties

被引:5
作者
da Silva Araujo, Cleidiane [1 ]
Pino-Hernandez, Enrique [2 ,5 ]
Souza Batista, Jaira Thayse [1 ]
Sarkis Peixoto Joele, Maria Regina [3 ]
de Arimateia Rodrigues do Rego, Jose [4 ]
Henriques Lourenco, Lucia de Fatima [1 ]
机构
[1] Fed Univ Para, Grad Program Food Sci & Technol, Belem, Para, Brazil
[2] Univ Minho, Ctr Biol Engn, Campus Gualtar, Braga, Portugal
[3] Fed Inst Educ Sci & Technol, Campus Castanhal, Castanhal, Para, Brazil
[4] State Univ Para, Dept Nat Sci, Belem, Para, Brazil
[5] INYCIA Res Grp, Cartagena 130015, Colombia
关键词
SKIN GELATIN; FUNCTIONAL-PROPERTIES; SEA-BASS; PHYSICOCHEMICAL PROPERTIES; EXTRACTION; PRETREATMENTS;
D O I
10.1038/s41598-021-99085-3
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Fish skin is a raw material used for gelatin production. It can satisfy consumers with specific socio-cultural and religious needs. Different technologies have been studied for drying gelatin. Therefore, it is relevant to understand the influence of drying conditions on the final product. This study aims to optimize drying methods such as convection hot air alone and combined with infrared radiation to obtain gelatin from acoupa weakfish skin by using composite central rotational designs 2(2) and 2(3) and response surface methodology. The gelatin obtained from the optimized conditions were characterized based on their physical, chemical, technological, and functional properties. The desirability function results show the convection hot air as the most effective method when conducted at 59.14 degrees C for 12.35 h. Infrared radiation at 70 degrees C for 2.0 h and convective drying at 70 degrees C for 3.5 h were the best condition of the combined process. The gelatins obtained had gel strength of 298.00 and 507.33 g and emulsion activity index of 82.46 and 62.77 m(2)/g in the combined and convective methods, respectively, and protein content above 90%. These results indicate that the processes studied can be used to produce gelatin with suitable technological and functional properties for several applications.
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页数:14
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