領(lǐng)學(xué)術(shù)科研之先,創(chuàng)食品科技之新
—— 中國食品雜志社
期刊集群
Effect of Glutathione and Storage Time on Rheological Properties of Per-proofed Frozen Dough
來源:食品科學(xué)網(wǎng) 閱讀量: 113 發(fā)表時間: 2017-06-07
作者: J Uriyapongson, C L Goad, P Rayas-Duarte
關(guān)鍵詞:
摘要:

The effect of reduced glutathione (GSH) on fresh and pre-proofed frozen dough rheological properties were investigated using dynamic stress rheometry and small scale extensibility with the addition of three levels (80×10-6, 160× 10-6 and 240×10-6 GSH) and six storage times (0 and 1 day, 2, 4, 6 and 8 weeks). Three relaxation times (1, 13 and 26min) after loading the dough in the rheometer were used to determine storage (G’) and loss (G”) moduli. Correlations for G’ (r=0.678 and 0.622 at 0.05, and 10Hz, respectively) and G” (r=0.699, and 0.690 at 0.05, and 10Hz, respectively) were observed with the area under the extension curve at 26 min relaxation time. The addition of GSH to fresh dough reduced G’ (16.4% to 55.9%) and G” (13.7% to 52.2%). Freezing and frozen storage caused increase in G’ and G”. The addition of GSH reduced dough strength indicated by the reduction in maximum resistance to extension (Rmax) and the ratio of maximum resistance to extensibility (Rmax/E). The reduction in Rmax across all relaxation times ranged from 16.2% to 59.4%. An increase in dough extension (E) was observed with 240×10-6 GSH at all frozen storage and rest period times. Addition of GSH caused an increase of liquid phase (30.6% to 35.3%) in fresh dough and frozen dough (10.3% to 20.7%) after one day frozen storage. Negative correlations of water content in the solid phase with dough extensibility and area under the extensibility curve were found (r=-0.594 and-0.563, respectively, p<0.001). This suggests a loss of dough extensibility and strength as the water holding capacity of the dough components changes during frozen storage.

電話: 010-87293157 地址: 北京市豐臺區(qū)洋橋70號

版權(quán)所有 @ 2023 中國食品雜志社 京公網(wǎng)安備11010602060050號 京ICP備14033398號-2

大安市| 鹤峰县| 镇沅| 留坝县| 佛冈县| 吉木乃县| 阳曲县| 凤台县| 盐边县| 腾冲县| 浮山县| 嘉峪关市| 华坪县| 沈阳市| 昌乐县| 大宁县| 都安| 赤壁市| 浮梁县| 阿克苏市| 兴文县| 淮滨县| 泗阳县| 滦平县| 兴仁县| 泗洪县| 崇阳县| 峨眉山市| 金平| 台北县| 卓尼县| 德兴市| 武胜县| 克什克腾旗| 绥阳县| 连江县| 西充县| 齐齐哈尔市| 杭锦旗| 虞城县| 环江|