Effect of Swell-Drying on Mango (Mangifera indica) Drying Kinetics.
Foods
; 11(15)2022 Jul 26.
Article
in English
| MEDLINE | ID: covidwho-1993969
ABSTRACT
Swell-Drying operation (SD) was applied on mangoes to evaluate its effect on drying kinetics starting accessibility (δW), apparent drying coefficient (Dapp), and time to obtain a final moisture content of 20% d.b (tf = 20% d.b). Swell-drying consisted of (1) submitting fresh mangoes to a first pre-drying stage under Convective Air Drying (CAD) until a moisture content of 37% d.b; (2) applying Instant Controlled Pressure Drop (DIC) treatments on pre-dried mangoes by following a central composite rotatable design (steam pressure 0.2-0.6 MPa and treatment time 5 and 55 s); and (3) apply post-drying of mangoes under CAD. In both cases, CAD was performed at 60 °C and airflow of 1 m/s. Results showed that both the treatment time and the steam pressure impacted the Dapp and the δW. By comparing to the control, SD (0.54 MPa and 48 s) increased the Dapp and δW to 12.2 and 2.7 times, respectively. Moreover, SD triggers a significant reduction in post-drying time (tf = 20% d.b), being this of 2.4 h vs. 30.8 h. These results could be linked to the expansion of the internal pores of mangoes generated by the instant autovaporization of residual water triggered by DIC treatment.
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International databases
Database:
MEDLINE
Type of study:
Experimental Studies
/
Observational study
Language:
English
Year:
2022
Document Type:
Article
Affiliation country:
Foods11152220
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