PARTNERS

Performance evaluation of the double screw conveyor in radio frequency systems

 

Non-uniform heating is a major challenge for commercial applications of radio frequency (RF) technology in the food industry. To improve the RF heating uniformity of granular foods, a double screw conveyor was designed and used by Chinese Researchers to investigate effects of conveying direction, screw rotation speed, filling ratio, and electrode gap on the heating rate and uniformity of jujubes. The results published in Innovative Food Science and Emerging Technologies journal showed that there was no significant (p> 0.05) difference between forward and backward conveying directions both in heating rate and uniformity, while the RF heating uniformity gradually improved with the increased screw rotation speed. 

RF heating rate increased gradually with the increase of filling ratio or decrease of electrode gap. Except for the significantly higher lambda value found in the filling ratio of 80%, no significant (p> 0.05) changes were observed between 20 and 60%. Furthermore, the lambda values also increased with decreasing electrode gap. Quality evaluation indicated that there were no significant (p> 0.05) differences in the color values, texture properties, ascorbic acid, and moisture content between control and samples treated by RF heating under the double screw conveying.

Overall, the results obtained from this study demonstrate that as a simultaneous mixing and moving equipment, the screw conveying can be considered as a promising approach in improving the RF heating uniformity of granular foods for industrial applications. 

LATEST NEWS

The May issue of “Industrie Alimentari” is now available

  In this issue, we publish a study to determine the presence of histamine in canned mackerel (Scomber japonicus-Scomber colias) marketed in Sardinia (Italy) by...

Effect of pulsed electric field treatment on beef cuts properties

  The effect of pulsed electric field (PEF) treatment on beef cuts was performed by Czech Researcher based on two consecutive experiments and the results...

Your challenges, our mission

  Our entire portfolio of devices, solutions and services is specifically developed to solve customers' specific problems   Production processes in the food and beverage industry have...

ASCOLTATE IL PODCAST DI "ALIMENTI FUNZIONALI"

DOVE TROVARE LE NOSTRE RIVISTE

28-29/05/2024 - MONACO, GERMANIA
28-30/05/2024 PARMA
6-7/06/2024 - PARMA
12-15/06/2024 - BANGKOK, TAILANDIA
18-21/06/2024 - SHANGHAI, CINA
8-12/09/2024, RIMINI
24-26/09/2024 - NORIMBERGA, GERMANIA
9-12/10/2024 - MILANO
16-17/10/2024 - VERONA
5-7/11/2024 - DUBAI, EAU
6-7/11/2024 LA ROCHELLE, FRANCIA
12-15/11/2024 MILANO
18-20/11/2024 - SAHANGHAI, CINA
19-21/11/2024 - FRANCOFORTE, GERMANIA
24-26/11/2024 - NORIMBERGA, GERMANIA
26-28/11/2024 BORDEAUX, FRANCIA
18-22/01/2025 - RIMINI
2-5/02/2025 - COLONIA, GERMANIA
5-7/02/2025 - BERLIN, GERMANIA
16-18/02/2025 - RIMINI
23-25/02/2025 - BOLOGNA
16-18/03/2025 - DÜSSELDORF, GERMANIA
18-22/05/2025 - DÜSSELDORF, GERMANIA
27-30/05/2025 - MILANO

CATALOGO LIBRI

CATALOGO RIVISTE