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Soymilk treated by ultra high-pressure homogenization: Acid coagulation properties and characteristics of a soy-yogurt product
被引:73
作者:
Cruz, N. S.
[1
]
Capellas, M.
[1
]
Jaramillo, D. P.
[1
]
Trujillo, A. J.
[1
]
Guamis, B.
[1
]
Ferragut, V.
[1
]
机构:
[1] Univ Autonoma Barcelona, Fac Vet, Dept Ciencia Anim & Aliments, CERPTA, Bellaterra 08193, Spain
关键词:
Soymilk;
Coagulation;
Ultra high-pressure homogenization (UHPH);
Water retention;
Gel firmness;
FAT GLOBULE SIZE;
FERMENTED SOYMILK;
ORANGE JUICE;
ESCHERICHIA-COLI;
WHEY PROTEINS;
BOVINE-MILK;
SHELF-LIFE;
INACTIVATION;
BIFIDOBACTERIA;
CULTURES;
D O I:
10.1016/j.foodhyd.2008.03.010
中图分类号:
O69 [应用化学];
学科分类号:
081704 ;
摘要:
The effects of ultra high-pressure homogenization (UHPH) on soymilk were investigated and its suitability for soy-yogurt manufacturing was compared with conventional heat treatments (UHT and autoclaved). UHPH soymilk at 40 and 50 degrees C inlet temperature was treated at 200 and 300 MPa. Coagulation parameters and acidification curves were determined for the fermentation process. Textural parameters, water-holding capacity and microstructure were performed on soy-yogurts obtained after cold storage during 24 h. Results indicated that conventionally heat-treated soymilks and UHPH-treated samples exhibited different behaviour to coagulation. Heat-treated soymilk had a shorter onset of gelation, and higher aggregation rate and gel network density than UHPH-treated soymilk. However, physical quality parameters, specially firmness, were much better in UHPH than in conventional heat-treated soy-yogurts. (C) 2008 Elsevier Ltd. All rights reserved.
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页码:490 / 496
页数:7
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