Quality of Banana Puree During Storage: a Comparison of High Pressure Processing and Thermal Pasteurization Methods
文献类型: 外文期刊
第一作者: Xu, Zhenzhen
作者: Xu, Zhenzhen;Wang, Yongtao;Ren, Pengyan;Ni, Yuanying;Liao, Xiaojun;Xu, Zhenzhen
作者机构:
关键词: Banana puree;High pressure processing;Quality comparison;Storage
期刊名称:FOOD AND BIOPROCESS TECHNOLOGY ( 影响因子:4.465; 五年影响因子:4.793 )
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收录情况: SCI
摘要: The quality features of banana puree after high pressure processing (HPP) at 500 MPa for 10 min and thermal pasteurization (TP) at 90 A degrees C for 2 min during 30 days of refrigerated storage were compared in this study. Initial counts in banana puree of greater than 3.80 log colony-forming units (CFU)/g of total aerobic bacteria (TAB) and 3.10 log CFU/g of molds and yeasts (M&Y) were reduced by HPP and TP. TAB were approximately 1.0 CFU/g, and M&Y were less than 0.3 log CFU/g in HPP- and TP-processed puree during storage. HPP and TP did not change pH, titratable acidity (TA), total soluble solids (TSS), lightness (L), and yellowness (b), total phenolic content (TPC), and antioxidant capacity (AC), but HPP raised redness (a) and TP reduced a and ascorbic acid (AA). During storage, L, a, and b in HPP- and TP-processed purees did not change but HPP-processed puree increased pH and decreased TA. After storage, the percentage of TPC and AA was 75.85 and 55.09 % in the HPP group and 96.30 and 68.09 % in the TP group, indicating a significant loss of TPC and a greater loss of AA in HPP-processed puree. The loss of AC agreed with the loss of AA and TPC. HPP preserved particle size distribution and viscosity of purees, whereas TP increased the number of smaller particles and viscosity after processing and in storage. Twenty-six volatiles (18 esters) and 22 volatiles (15 esters) were detected in HPP- and TP-processed purees, and the ester fraction was 69.79 and 52.36 %, respectively. HPP was found to be an effective alternative pasteurization method for preserving the quality of fresh banana puree.
分类号: TS2
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