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Novel microwave-assisted vacuum drying for heat sensitive foods

Objective

"Heat sensitive foods and products that possess excellent quality in terms of taste, aroma, texture, and appearance, such as herbs, spices, seafood, etc., pose a major challenge to food driers. Products such as garlic, ginger, spring onions and shrimps are cellular tissues containing gas-filled pores that tend to collapse when subjected to dehydration. This collapse is more noticeable with prolonged exposure to elevated drying temperatures, such as those used in convective drying. For this reason, hot air drying results in substantial degradation in quality attributes such as colour, nutrients and flavour, sever shrinkage also reduces bulk density and dehydration capacity. Also, chemical changes causing loss of flavour and nutrients occur during convective drying so the properties of dehydrated products are poor. A number of drying techniques have been developed over the years, among them atmospheric forced-air dehydration, a very common method. The major disadvantage of the hot air convective drying of food is the low energy efficiency and lengthy drying time during the falling rate period.

MILD-DRY will build on the positive results of laboratory trails using microwave-assisted vacuum drying (MAVD) for the successful dehydration of selected foods, whereby the drying time for carrots for example was reduced to 2 h compared with 4.5-8.5 h in convectional hot air drying. Moreover, dried carrots showed higher rehydration potential, higher beta-carotene and vitamin C contents, lower density, and softer texture than those prepared by air drying. Further research effort will be performed in order to optimise the approach through the intermittent as opposed to continuous application of MW in order to achieve higher energy savings and product quality enhancement. To bridge the gap between laboratory research and industrial application, a prototype system will be developed for its validation in commercial food drying facilities."

Call for proposal

FP7-SME-2012
See other projects for this call

Coordinator

IRIS TECHNOLOGY SOLUTIONS, SOCIEDAD LIMITADA
Address
Calle Velazquez, No 94 Primera Planta
28006 Madrid
Spain
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
EU contribution
€ 41 876
Administrative Contact
Digby Colm (Mr.)

Participants (8)

FULLWELL MILL LIMITED
United Kingdom
EU contribution
€ 350 070
Address
North Hylton Road - Southwick Ind Estate Unit 5D
SR5 3TX Sunderland
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Richard Friend (Mr.)
TUERKIYE SUET ET GIDA SANAYICILERI VE UERETICILERI BIRLIGI DERNEGI
Turkey
EU contribution
€ 37 435
Address
Mustafa Kemal Mahallesi 2125 Sok A Blok 6/8
06510 Ankara
Activity type
Other
Administrative Contact
Melek Us (Mrs.)
FRESHSEAL LIMITED
United Kingdom
EU contribution
€ 183 439
Address
St George S Road Unit 1 Industrial
TF2 7QZ Telford
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Georgios Vanezi (Mr.)
GOKSER MAKINA SANAYI VE TICARET LIMITED SIRKETI
Turkey
EU contribution
€ 78 771
Address
Yil Bulvari 57 Sokak 96 96
06370 Ankara
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Unal Hilal (Mr.)
E.T.I.A. - EVALUATION TECHNOLOGIQUE INGENIEURIE ET APPLICATIONS SA
France
EU contribution
€ 220 288
Address
Carrefour Jean Monnet
60201 Compiegne
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Olivier Lepez (Mr.)
THE FOOD MACHINERY COMPANY LIMITED
United Kingdom
EU contribution
€ 199 385
Address
Fenn Corner St Mary Hoo
ME3 8RF Rochester
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Lee Gapper (Mr.)
UNIVERSITY COLLEGE DUBLIN, NATIONAL UNIVERSITY OF IRELAND, DUBLIN
Ireland
EU contribution
€ 24 320
Address
Belfield
4 Dublin
Activity type
Higher or Secondary Education Establishments
Administrative Contact
Donal Doolan (Mr.)
LEBENSMITTELVERSUCHSANSTALT
Austria
EU contribution
€ 14 400
Address
Zaunergasse 1 3
1030 Wien
Activity type
Research Organisations
Administrative Contact
Christine Grabler (Ms.)