MODEL FOR TRANSIENT MOISTURE PROFILES OF A DRYING APPLE SLAB USING THE DATA OBTAINED WITH MAGNETIC-RESONANCE-IMAGING

被引：36

作者：

MCCARTHY, MJ

PEREZ, E

OZILGEN, M

机构：

[1] UNIV CALIF DAVIS,DEPT AGR ENGN,DAVIS,CA 95616

[2] MIDDLE E TECH UNIV,DEPT FOOD ENGN,ANKARA 06531,TURKEY

来源：

BIOTECHNOLOGY PROGRESS | 1991年 / 7卷 / 06期

关键词：

D O I：

10.1021/bp00012a009

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The use of magnetic resonance imaging (MRI) spectroscopy as a real time probe to noninvasively obtain transient moisture profiles during food dehydration is demonstrated. A laboratory-scale wind tunnel drier was constructed. A 2 x 5 x 5 cm3 apple slab was inserted in the probative zone and one-dimensional drying was effected at quasiisothermal conditions. Spatial resolution of 0.60 mm was obtained. The transient moisture profiles were simulated with a simple mass transfer model. Effective diffusivity of water in the apple was calculated as 8.3 x 10(-5) cm2/s.

引用

页码：540 / 543

页数：4

共 21 条

[1]

ALZAMORA SM, 1970, THESIS U BUENOS AIRE

[2] MAGNETIC-RESONANCE AS A PROBE OF PERMEABILITY IN POROUS-MEDIA [J].

BANAVAR, JR ;

SCHWARTZ, LM .

PHYSICAL REVIEW LETTERS, 1987, 58 (14) :1411-1414

[3] DIFFUSION IN LIQUID SOLID SYSTEMS BY NMR IMAGING [J].

BLACKBAND, S ;

MANSFIELD, P .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1986, 19 (02) :L49-L52

[4]

CHIANG WC, 1986, DRYING 86

[5]

CHIRIFE J, 1981, ADV DRYING

[6]

CUNNINGHAM RM, 1980, DRYING 80, V1, P40

[7]

GADIAN DG, 1982, NUCLEAR MAGNETIC RES

[8] T2 DECONVOLUTION IN MR IMAGING AND NMR-SPECTROSCOPY [J].

HAACKE, EM ;

LIANG, ZP ;

TKACH, JA .

JOURNAL OF MAGNETIC RESONANCE, 1988, 76 (03) :440-457

[9]

IGBEKA JC, 1982, J FOOD TECHNOL, V17, P28

[10]

Labuza T. P., 1970, Food Technology, V24, P712

← 1 2 3 →