文献类型: 外文期刊
作者: Nassar, KS; Lu, J; Pang, XY; Ragab, ES; Yue, YC; Zhang, SW; Lv, JP
作者机构:
关键词: High-Pressure; Caprine Milk; Rennet; Rheology; Texture; Water-Holding Capacity
期刊名称: JOURNAL OF FOOD ENGINEERING
ISSN: 0260-8774
年卷期: 2020 年 267 卷
页码:
收录情况: JCR(2021版) ; EI(2021版)
摘要: Caprine milk has poor rheological properties, which usually result in low cheese yield, as well as economic loss to cheesemakers. Several methods had been used to improve its coagulation properties. However, high pressure (HP) had been rarely used. With the aim of improving the milk coagulation properties, this study therefore assessed the effects of HP treatment on caprine milk before rennet-induced coagulation. Additionally, the rheological, textural, microstructural characteristics and water-holding capacity of the curds were evaluated as a function of pressure (300, 400 and 500 MPa), holding time (20, 40 and 60 min), and temperature (20, 40 and 60 degrees C) using a response surface methodology. The Box-Behnken design was used to investigate the effect of process variables. The results showed that with an increase in pressure level or holding time, or a decrease in temperature, the rennet coagulation time showed a decreasing trend while curd firming rate and coagulum strength showed the opposite. Also, an increased pressure level, temperature and time resulted in an increase in water-holding capacity and a subsequent decrease in the gel-firmness of the curds. The trend of the results was confirmed by Scanning electron micrographs of the curds. HP could therefore be an alternative technology for improving the coagulation properties of caprine milk.
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