Effect of high-humidity hot air impingement blanching (HHAIB) on drying and quality of red pepper (Capsicum annuum L.)

文献类型: 外文期刊

第一作者: Wang, Jun

作者: Wang, Jun;Qian, Jing-Ya;Liu, Yan-Hong;Gao, Zhen-Jiang;Xiao, Hong-Wei;Fang, Xiao-Ming;Mujumdar, A. S.;Zhang, Qian;Yang, Xu-Hai

作者机构:

关键词: Red pepper;High-humidity hot air impingement blanching (HHAIB);Hot air impingement drying;Polyphenol oxidase;Colour;Microstructure;Texture

期刊名称:FOOD CHEMISTRY ( 影响因子:7.514; 五年影响因子:7.516 )

ISSN:

年卷期:

页码:

收录情况: SCI

摘要: Effects of high-humidity hot air impingement blanching (HHAIB) under different times (30, 60, 90, 120, 150, 180, 210, and 240 s) on drying characteristics and quality attributes of red peppers in terms of surface colour, red pigment content, microstructure and texture were investigated. Results showed that polyphenol oxidase (PPO) residual activity of the samples decreased with increasing blanching time; it was decreased to 7% after 120 s. A first-order fraction model described PPO inactivation well. Suitable HHAIB time can reduce drying time extensively. Pepper surface colour was influenced by different treatments. In terms of red pigment content, there was no significant difference for blanching time under 120 s, whereas over blanching (blanching time >= 150 s) can significantly reduce the red pigment content. Microstructure observations indicate that superficial micro-cracks occur, which explain, why HHAIB enhances drying rate. The firmness, hardness, and gumminess of the samples decreased with increase of HHAIB time. (C) 2016 Elsevier Ltd. All rights reserved.

分类号: TS2`TS201.2

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