期刊
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
卷 46, 期 5, 页码 386-392出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cep.2006.06.020
关键词
spray drying; watermelon; maltodextrin; lycopene; beta-carotene; powder quality
A study was conducted using Buchi mini spray dryer B-191 to produce spray-dried watermelon powders using two different maltodextrin concentrations (3% and 5%) as the encapsulating agent and four different inlet temperatures (145 degrees C, 155 degrees C, 165 C degrees and 175 degrees C). The spray-dried watermelon powders were analysed for moisture content, dissolution, water activity, colour, lycopene and P-carotene. Results demonstrated that as inlet temperature increased, the moisture content and dissolution decreased. However, there were no significant changes in the water activities of the spray-dried powders for all the inlet temperatures investigated. Colormetric analyses showed that the L*, a*, b*, hue and chroma values changed with the inlet temperatures. The results were well correlated to the lycopene and P-carotene contents of the spray-dried powders. (c) 2006 Elsevier B.V. All rights reserved.
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