Effect of enzymatic treatment on rheological properties, glass temperature transition and microstructure of date syrup

被引:21
作者
Abbes, Fatma [1 ]
Masmoudi, Manel [1 ]
Kchaou, Wissal [1 ]
Danthine, Sabine [2 ]
Blecker, Christophe [2 ]
Attia, Hamadi [1 ]
Besbes, Souhail [1 ]
机构
[1] Univ Sfax, Lab Anal Alimentaires, Ecole Natl Ingenieurs Sfax, Sfax 3038, Tunisia
[2] Univ Liege, Gembloux Agro Bio Tech, Unite Technol Ind Agroalimentaires, B-5030 Gembloux, Belgium
关键词
Date syrup; Pectinase; Cellulase; Rheological behaviour; Glass transition temperature; CLARIFIED FRUIT JUICES; SENSORY CHARACTERISTICS; FOOD; PECTINASE;
D O I
10.1016/j.lwt.2014.08.027
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
A knowledge of rheological properties is of importance in processing, handling, process design, product development and quality control. This study investigates the effect of commercial hydrolytic enzymes (pectinase and cellulase) on rheological properties and glass temperature transition of date syrup. Date syrups obtained by enzymatic extraction exhibited a quasi Newtonian behaviour. The enzyme-treated date syrups showed the highest values of activation energy (E-a). Therefore, these syrups showed the most temperature dependency. Dynamic shear results revealed viscous behaviour for date syrups indicating that both syrups displayed liquid-like behaviour. Temperature significantly affected both (G') and (G ''). The glass transition temperature (Tg) of date syrups varied between -39.56 and -45.74 degrees C depending on their composition. Glass transition temperature of date syrups decreased linearly with an increase in water content. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:339 / 345
页数:7
相关论文
共 37 条
[1]   Date syrup: Effect of hydrolytic enzymes (pectinase/cellulase) on physico-chemical characteristics, sensory and functional properties [J].
Abbes, Fatma ;
Bouaziz, Mohamed Ali ;
Blecker, Christophe ;
Masmoudi, Mane ;
Attia, Hamadi ;
Besbes, Souhail .
LWT-FOOD SCIENCE AND TECHNOLOGY, 2011, 44 (08) :1827-1834
[2]   Colour kinetics and rheology of coriander leaf puree and storage characteristics of the paste [J].
Ahmed, J ;
Shivhare, US ;
Singh, P .
FOOD CHEMISTRY, 2004, 84 (04) :605-611
[3]   Physico-chemical, rheological, calorimetric and dielectric behavior of selected Indian honey [J].
Ahmed, Jasim ;
Prabhu, S. T. ;
Raghavan, G. S. V. ;
Ngadi, M. .
JOURNAL OF FOOD ENGINEERING, 2007, 79 (04) :1207-1213
[4]   ULTRAFILTRATION WITH A MICROFILTRATION MEMBRANE OF ACID SKIMMED AND FAT-ENRICHED MILK COAGULA - HYDRODYNAMIC, MICROSCOPIC AND RHEOLOGICAL APPROACHES [J].
ATTIA, H ;
BENNASAR, M ;
LAGAUDE, A ;
HUGODOT, B ;
ROUVIERE, J ;
DELAFUENTE, BT .
JOURNAL OF DAIRY RESEARCH, 1993, 60 (02) :161-174
[5]  
Barreveld W. H., 1993, B SERVICES FAO
[6]   Compositional, Physical, Antioxidant and Sensory Characteristics of Novel Syrup from Date Palm (Phoenix dactylifera L.) [J].
Ben Thabet, I. ;
Besbes, S. ;
Masmoudi, M. ;
Attia, H. ;
Deroanne, C. ;
Blecker, C. .
FOOD SCIENCE AND TECHNOLOGY INTERNATIONAL, 2009, 15 (06) :583-590
[7]  
Besbes S., 2006, MICROBIOL HYG ALIM, V18, P3
[8]   Adding value to hard date (Phoenix dactylifera L.): Compositional, functional and sensory characteristics of date jam [J].
Besbes, Souhail ;
Drira, Lobna ;
Blecker, Christophe ;
Deroanne, Claude ;
Attia, Hamadi .
FOOD CHEMISTRY, 2009, 112 (02) :406-411
[9]   Effect of enzyme-aided pressing on anthocyanin yield and profiles in bilberry and blackcurrant juices [J].
Buchert, J ;
Koponen, JM ;
Suutarinen, M ;
Mustranta, A ;
Lille, M ;
Törrönen, R ;
Poutanen, K .
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE, 2005, 85 (15) :2548-2556
[10]   CAKING AND STICKINESS OF DAIRY-BASED FOOD POWDERS AS RELATED TO GLASS-TRANSITION [J].
CHUY, LE ;
LABUZA, TP .
JOURNAL OF FOOD SCIENCE, 1994, 59 (01) :43-46